diff --git a/core/java/android/app/Notification.java b/core/java/android/app/Notification.java
index 8edf03d033f8a..af027837ec917 100644
--- a/core/java/android/app/Notification.java
+++ b/core/java/android/app/Notification.java
@@ -2301,11 +2301,11 @@ public class Notification implements Parcelable
 
         priority = parcel.readInt();
 
-        category = parcel.readString();
+        category = parcel.readString8();
 
-        mGroupKey = parcel.readString();
+        mGroupKey = parcel.readString8();
 
-        mSortKey = parcel.readString();
+        mSortKey = parcel.readString8();
 
         extras = Bundle.setDefusable(parcel.readBundle(), true); // may be null
         fixDuplicateExtras();
@@ -2329,12 +2329,12 @@ public class Notification implements Parcelable
         color = parcel.readInt();
 
         if (parcel.readInt() != 0) {
-            mChannelId = parcel.readString();
+            mChannelId = parcel.readString8();
         }
         mTimeout = parcel.readLong();
 
         if (parcel.readInt() != 0) {
-            mShortcutId = parcel.readString();
+            mShortcutId = parcel.readString8();
         }
 
         if (parcel.readInt() != 0) {
@@ -2766,11 +2766,11 @@ public class Notification implements Parcelable
 
         parcel.writeInt(priority);
 
-        parcel.writeString(category);
+        parcel.writeString8(category);
 
-        parcel.writeString(mGroupKey);
+        parcel.writeString8(mGroupKey);
 
-        parcel.writeString(mSortKey);
+        parcel.writeString8(mSortKey);
 
         parcel.writeBundle(extras); // null ok
 
@@ -2803,7 +2803,7 @@ public class Notification implements Parcelable
 
         if (mChannelId != null) {
             parcel.writeInt(1);
-            parcel.writeString(mChannelId);
+            parcel.writeString8(mChannelId);
         } else {
             parcel.writeInt(0);
         }
@@ -2811,7 +2811,7 @@ public class Notification implements Parcelable
 
         if (mShortcutId != null) {
             parcel.writeInt(1);
-            parcel.writeString(mShortcutId);
+            parcel.writeString8(mShortcutId);
         } else {
             parcel.writeInt(0);
         }
@@ -8873,7 +8873,7 @@ public class Notification implements Parcelable
             }
             mDesiredHeightResId = in.readInt();
             if (in.readInt() != 0) {
-                mShortcutId = in.readString();
+                mShortcutId = in.readString8();
             }
         }
 
@@ -9029,7 +9029,7 @@ public class Notification implements Parcelable
             out.writeInt(mDesiredHeightResId);
             out.writeInt(TextUtils.isEmpty(mShortcutId) ? 0 : 1);
             if (!TextUtils.isEmpty(mShortcutId)) {
-                out.writeString(mShortcutId);
+                out.writeString8(mShortcutId);
             }
         }
 
diff --git a/core/java/android/content/ClipData.java b/core/java/android/content/ClipData.java
index 9c806fa286bc3..1923bf3c5a23c 100644
--- a/core/java/android/content/ClipData.java
+++ b/core/java/android/content/ClipData.java
@@ -1206,7 +1206,7 @@ public class ClipData implements Parcelable {
             }
         } else {
             dest.writeInt(PARCEL_TYPE_STRING);
-            dest.writeString(text);
+            dest.writeString8(text);
         }
     }
 
@@ -1215,7 +1215,7 @@ public class ClipData implements Parcelable {
      */
     private static String readHtmlTextFromParcel(Parcel in) {
         if (in.readInt() == PARCEL_TYPE_STRING) {
-            return in.readString();
+            return in.readString8();
         }
         ParcelFileDescriptor pfd =
                 in.readParcelable(ParcelFileDescriptor.class.getClassLoader());
diff --git a/core/java/android/content/ContentProviderOperation.java b/core/java/android/content/ContentProviderOperation.java
index 494d2aeaf42a2..1fb426eb3cfc8 100644
--- a/core/java/android/content/ContentProviderOperation.java
+++ b/core/java/android/content/ContentProviderOperation.java
@@ -91,8 +91,8 @@ public class ContentProviderOperation implements Parcelable {
     private ContentProviderOperation(Parcel source) {
         mType = source.readInt();
         mUri = Uri.CREATOR.createFromParcel(source);
-        mMethod = source.readInt() != 0 ? source.readString() : null;
-        mArg = source.readInt() != 0 ? source.readString() : null;
+        mMethod = source.readInt() != 0 ? source.readString8() : null;
+        mArg = source.readInt() != 0 ? source.readString8() : null;
         final int valuesSize = source.readInt();
         if (valuesSize != -1) {
             mValues = new ArrayMap<>(valuesSize);
@@ -107,7 +107,7 @@ public class ContentProviderOperation implements Parcelable {
         } else {
             mExtras = null;
         }
-        mSelection = source.readInt() != 0 ? source.readString() : null;
+        mSelection = source.readInt() != 0 ? source.readString8() : null;
         mSelectionArgs = source.readSparseArray(null);
         mExpectedCount = source.readInt() != 0 ? source.readInt() : null;
         mYieldAllowed = source.readInt() != 0;
@@ -135,13 +135,13 @@ public class ContentProviderOperation implements Parcelable {
         Uri.writeToParcel(dest, mUri);
         if (mMethod != null) {
             dest.writeInt(1);
-            dest.writeString(mMethod);
+            dest.writeString8(mMethod);
         } else {
             dest.writeInt(0);
         }
         if (mArg != null) {
             dest.writeInt(1);
-            dest.writeString(mArg);
+            dest.writeString8(mArg);
         } else {
             dest.writeInt(0);
         }
@@ -159,7 +159,7 @@ public class ContentProviderOperation implements Parcelable {
         }
         if (mSelection != null) {
             dest.writeInt(1);
-            dest.writeString(mSelection);
+            dest.writeString8(mSelection);
         } else {
             dest.writeInt(0);
         }
@@ -591,7 +591,7 @@ public class ContentProviderOperation implements Parcelable {
         public BackReference(Parcel src) {
             this.fromIndex = src.readInt();
             if (src.readInt() != 0) {
-                this.fromKey = src.readString();
+                this.fromKey = src.readString8();
             } else {
                 this.fromKey = null;
             }
@@ -620,7 +620,7 @@ public class ContentProviderOperation implements Parcelable {
             dest.writeInt(fromIndex);
             if (fromKey != null) {
                 dest.writeInt(1);
-                dest.writeString(fromKey);
+                dest.writeString8(fromKey);
             } else {
                 dest.writeInt(0);
             }
diff --git a/core/java/android/content/Intent.java b/core/java/android/content/Intent.java
index b1d6c830d3b72..def150ab49e51 100644
--- a/core/java/android/content/Intent.java
+++ b/core/java/android/content/Intent.java
@@ -888,8 +888,8 @@ public class Intent implements Parcelable, Cloneable {
 
                 public ShortcutIconResource createFromParcel(Parcel source) {
                     ShortcutIconResource icon = new ShortcutIconResource();
-                    icon.packageName = source.readString();
-                    icon.resourceName = source.readString();
+                    icon.packageName = source.readString8();
+                    icon.resourceName = source.readString8();
                     return icon;
                 }
 
@@ -906,8 +906,8 @@ public class Intent implements Parcelable, Cloneable {
         }
 
         public void writeToParcel(Parcel dest, int flags) {
-            dest.writeString(packageName);
-            dest.writeString(resourceName);
+            dest.writeString8(packageName);
+            dest.writeString8(resourceName);
         }
 
         @Override
@@ -10807,12 +10807,12 @@ public class Intent implements Parcelable, Cloneable {
     }
 
     public void writeToParcel(Parcel out, int flags) {
-        out.writeString(mAction);
+        out.writeString8(mAction);
         Uri.writeToParcel(out, mData);
-        out.writeString(mType);
-        out.writeString(mIdentifier);
+        out.writeString8(mType);
+        out.writeString8(mIdentifier);
         out.writeInt(mFlags);
-        out.writeString(mPackage);
+        out.writeString8(mPackage);
         ComponentName.writeToParcel(mComponent, out);
 
         if (mSourceBounds != null) {
@@ -10826,7 +10826,7 @@ public class Intent implements Parcelable, Cloneable {
             final int N = mCategories.size();
             out.writeInt(N);
             for (int i=0; i<N; i++) {
-                out.writeString(mCategories.valueAt(i));
+                out.writeString8(mCategories.valueAt(i));
             }
         } else {
             out.writeInt(0);
@@ -10865,12 +10865,12 @@ public class Intent implements Parcelable, Cloneable {
     }
 
     public void readFromParcel(Parcel in) {
-        setAction(in.readString());
+        setAction(in.readString8());
         mData = Uri.CREATOR.createFromParcel(in);
-        mType = in.readString();
-        mIdentifier = in.readString();
+        mType = in.readString8();
+        mIdentifier = in.readString8();
         mFlags = in.readInt();
-        mPackage = in.readString();
+        mPackage = in.readString8();
         mComponent = ComponentName.readFromParcel(in);
 
         if (in.readInt() != 0) {
@@ -10882,7 +10882,7 @@ public class Intent implements Parcelable, Cloneable {
             mCategories = new ArraySet<String>();
             int i;
             for (i=0; i<N; i++) {
-                mCategories.add(in.readString().intern());
+                mCategories.add(in.readString8().intern());
             }
         } else {
             mCategories = null;
diff --git a/core/java/android/content/pm/ActivityInfo.java b/core/java/android/content/pm/ActivityInfo.java
index f25ce76d93655..b1f88693d9c00 100644
--- a/core/java/android/content/pm/ActivityInfo.java
+++ b/core/java/android/content/pm/ActivityInfo.java
@@ -1206,17 +1206,17 @@ public class ActivityInfo extends ComponentInfo implements Parcelable {
         dest.writeInt(theme);
         dest.writeInt(launchMode);
         dest.writeInt(documentLaunchMode);
-        dest.writeString(permission);
-        dest.writeString(taskAffinity);
-        dest.writeString(targetActivity);
-        dest.writeString(launchToken);
+        dest.writeString8(permission);
+        dest.writeString8(taskAffinity);
+        dest.writeString8(targetActivity);
+        dest.writeString8(launchToken);
         dest.writeInt(flags);
         dest.writeInt(privateFlags);
         dest.writeInt(screenOrientation);
         dest.writeInt(configChanges);
         dest.writeInt(softInputMode);
         dest.writeInt(uiOptions);
-        dest.writeString(parentActivityName);
+        dest.writeString8(parentActivityName);
         dest.writeInt(persistableMode);
         dest.writeInt(maxRecents);
         dest.writeInt(lockTaskLaunchMode);
@@ -1227,7 +1227,7 @@ public class ActivityInfo extends ComponentInfo implements Parcelable {
             dest.writeInt(0);
         }
         dest.writeInt(resizeMode);
-        dest.writeString(requestedVrComponent);
+        dest.writeString8(requestedVrComponent);
         dest.writeInt(rotationAnimation);
         dest.writeInt(colorMode);
         dest.writeFloat(maxAspectRatio);
@@ -1327,17 +1327,17 @@ public class ActivityInfo extends ComponentInfo implements Parcelable {
         theme = source.readInt();
         launchMode = source.readInt();
         documentLaunchMode = source.readInt();
-        permission = source.readString();
-        taskAffinity = source.readString();
-        targetActivity = source.readString();
-        launchToken = source.readString();
+        permission = source.readString8();
+        taskAffinity = source.readString8();
+        targetActivity = source.readString8();
+        launchToken = source.readString8();
         flags = source.readInt();
         privateFlags = source.readInt();
         screenOrientation = source.readInt();
         configChanges = source.readInt();
         softInputMode = source.readInt();
         uiOptions = source.readInt();
-        parentActivityName = source.readString();
+        parentActivityName = source.readString8();
         persistableMode = source.readInt();
         maxRecents = source.readInt();
         lockTaskLaunchMode = source.readInt();
@@ -1345,7 +1345,7 @@ public class ActivityInfo extends ComponentInfo implements Parcelable {
             windowLayout = new WindowLayout(source);
         }
         resizeMode = source.readInt();
-        requestedVrComponent = source.readString();
+        requestedVrComponent = source.readString8();
         rotationAnimation = source.readInt();
         colorMode = source.readInt();
         maxAspectRatio = source.readFloat();
@@ -1386,7 +1386,7 @@ public class ActivityInfo extends ComponentInfo implements Parcelable {
             gravity = source.readInt();
             minWidth = source.readInt();
             minHeight = source.readInt();
-            windowLayoutAffinity = source.readString();
+            windowLayoutAffinity = source.readString8();
         }
 
         /**
@@ -1476,7 +1476,7 @@ public class ActivityInfo extends ComponentInfo implements Parcelable {
             dest.writeInt(gravity);
             dest.writeInt(minWidth);
             dest.writeInt(minHeight);
-            dest.writeString(windowLayoutAffinity);
+            dest.writeString8(windowLayoutAffinity);
         }
     }
 }
diff --git a/core/java/android/content/pm/ApplicationInfo.java b/core/java/android/content/pm/ApplicationInfo.java
index b67060111785a..b37521b1189b7 100644
--- a/core/java/android/content/pm/ApplicationInfo.java
+++ b/core/java/android/content/pm/ApplicationInfo.java
@@ -1704,10 +1704,10 @@ public class ApplicationInfo extends PackageItemInfo implements Parcelable {
             return;
         }
         super.writeToParcel(dest, parcelableFlags);
-        dest.writeString(taskAffinity);
-        dest.writeString(permission);
-        dest.writeString(processName);
-        dest.writeString(className);
+        dest.writeString8(taskAffinity);
+        dest.writeString8(permission);
+        dest.writeString8(processName);
+        dest.writeString8(className);
         dest.writeInt(theme);
         dest.writeInt(flags);
         dest.writeInt(privateFlags);
@@ -1721,28 +1721,28 @@ public class ApplicationInfo extends PackageItemInfo implements Parcelable {
         } else {
             dest.writeInt(0);
         }
-        dest.writeString(scanSourceDir);
-        dest.writeString(scanPublicSourceDir);
-        dest.writeString(sourceDir);
-        dest.writeString(publicSourceDir);
+        dest.writeString8(scanSourceDir);
+        dest.writeString8(scanPublicSourceDir);
+        dest.writeString8(sourceDir);
+        dest.writeString8(publicSourceDir);
         dest.writeStringArray(splitNames);
         dest.writeStringArray(splitSourceDirs);
         dest.writeStringArray(splitPublicSourceDirs);
         dest.writeSparseArray((SparseArray) splitDependencies);
-        dest.writeString(nativeLibraryDir);
-        dest.writeString(secondaryNativeLibraryDir);
-        dest.writeString(nativeLibraryRootDir);
+        dest.writeString8(nativeLibraryDir);
+        dest.writeString8(secondaryNativeLibraryDir);
+        dest.writeString8(nativeLibraryRootDir);
         dest.writeInt(nativeLibraryRootRequiresIsa ? 1 : 0);
-        dest.writeString(primaryCpuAbi);
-        dest.writeString(secondaryCpuAbi);
+        dest.writeString8(primaryCpuAbi);
+        dest.writeString8(secondaryCpuAbi);
         dest.writeStringArray(resourceDirs);
-        dest.writeString(seInfo);
-        dest.writeString(seInfoUser);
+        dest.writeString8(seInfo);
+        dest.writeString8(seInfoUser);
         dest.writeStringArray(sharedLibraryFiles);
         dest.writeTypedList(sharedLibraryInfos);
-        dest.writeString(dataDir);
-        dest.writeString(deviceProtectedDataDir);
-        dest.writeString(credentialProtectedDataDir);
+        dest.writeString8(dataDir);
+        dest.writeString8(deviceProtectedDataDir);
+        dest.writeString8(credentialProtectedDataDir);
         dest.writeInt(uid);
         dest.writeInt(minSdkVersion);
         dest.writeInt(targetSdkVersion);
@@ -1750,8 +1750,8 @@ public class ApplicationInfo extends PackageItemInfo implements Parcelable {
         dest.writeInt(enabled ? 1 : 0);
         dest.writeInt(enabledSetting);
         dest.writeInt(installLocation);
-        dest.writeString(manageSpaceActivityName);
-        dest.writeString(backupAgentName);
+        dest.writeString8(manageSpaceActivityName);
+        dest.writeString8(backupAgentName);
         dest.writeInt(descriptionRes);
         dest.writeInt(uiOptions);
         dest.writeInt(fullBackupContent);
@@ -1759,16 +1759,16 @@ public class ApplicationInfo extends PackageItemInfo implements Parcelable {
         dest.writeInt(networkSecurityConfigRes);
         dest.writeInt(category);
         dest.writeInt(targetSandboxVersion);
-        dest.writeString(classLoaderName);
+        dest.writeString8(classLoaderName);
         dest.writeStringArray(splitClassLoaderNames);
         dest.writeInt(compileSdkVersion);
-        dest.writeString(compileSdkVersionCodename);
-        dest.writeString(appComponentFactory);
+        dest.writeString8(compileSdkVersionCodename);
+        dest.writeString8(appComponentFactory);
         dest.writeInt(iconRes);
         dest.writeInt(roundIconRes);
         dest.writeInt(mHiddenApiPolicy);
         dest.writeInt(hiddenUntilInstalled ? 1 : 0);
-        dest.writeString(zygotePreloadName);
+        dest.writeString8(zygotePreloadName);
         dest.writeInt(gwpAsanMode);
     }
 
@@ -1788,10 +1788,10 @@ public class ApplicationInfo extends PackageItemInfo implements Parcelable {
     @SuppressWarnings("unchecked")
     private ApplicationInfo(Parcel source) {
         super(source);
-        taskAffinity = source.readString();
-        permission = source.readString();
-        processName = source.readString();
-        className = source.readString();
+        taskAffinity = source.readString8();
+        permission = source.readString8();
+        processName = source.readString8();
+        className = source.readString8();
         theme = source.readInt();
         flags = source.readInt();
         privateFlags = source.readInt();
@@ -1802,28 +1802,28 @@ public class ApplicationInfo extends PackageItemInfo implements Parcelable {
             storageUuid = new UUID(source.readLong(), source.readLong());
             volumeUuid = StorageManager.convert(storageUuid);
         }
-        scanSourceDir = source.readString();
-        scanPublicSourceDir = source.readString();
-        sourceDir = source.readString();
-        publicSourceDir = source.readString();
+        scanSourceDir = source.readString8();
+        scanPublicSourceDir = source.readString8();
+        sourceDir = source.readString8();
+        publicSourceDir = source.readString8();
         splitNames = source.readStringArray();
         splitSourceDirs = source.readStringArray();
         splitPublicSourceDirs = source.readStringArray();
         splitDependencies = source.readSparseArray(null);
-        nativeLibraryDir = source.readString();
-        secondaryNativeLibraryDir = source.readString();
-        nativeLibraryRootDir = source.readString();
+        nativeLibraryDir = source.readString8();
+        secondaryNativeLibraryDir = source.readString8();
+        nativeLibraryRootDir = source.readString8();
         nativeLibraryRootRequiresIsa = source.readInt() != 0;
-        primaryCpuAbi = source.readString();
-        secondaryCpuAbi = source.readString();
+        primaryCpuAbi = source.readString8();
+        secondaryCpuAbi = source.readString8();
         resourceDirs = source.readStringArray();
-        seInfo = source.readString();
-        seInfoUser = source.readString();
+        seInfo = source.readString8();
+        seInfoUser = source.readString8();
         sharedLibraryFiles = source.readStringArray();
         sharedLibraryInfos = source.createTypedArrayList(SharedLibraryInfo.CREATOR);
-        dataDir = source.readString();
-        deviceProtectedDataDir = source.readString();
-        credentialProtectedDataDir = source.readString();
+        dataDir = source.readString8();
+        deviceProtectedDataDir = source.readString8();
+        credentialProtectedDataDir = source.readString8();
         uid = source.readInt();
         minSdkVersion = source.readInt();
         targetSdkVersion = source.readInt();
@@ -1831,8 +1831,8 @@ public class ApplicationInfo extends PackageItemInfo implements Parcelable {
         enabled = source.readInt() != 0;
         enabledSetting = source.readInt();
         installLocation = source.readInt();
-        manageSpaceActivityName = source.readString();
-        backupAgentName = source.readString();
+        manageSpaceActivityName = source.readString8();
+        backupAgentName = source.readString8();
         descriptionRes = source.readInt();
         uiOptions = source.readInt();
         fullBackupContent = source.readInt();
@@ -1840,16 +1840,16 @@ public class ApplicationInfo extends PackageItemInfo implements Parcelable {
         networkSecurityConfigRes = source.readInt();
         category = source.readInt();
         targetSandboxVersion = source.readInt();
-        classLoaderName = source.readString();
+        classLoaderName = source.readString8();
         splitClassLoaderNames = source.readStringArray();
         compileSdkVersion = source.readInt();
-        compileSdkVersionCodename = source.readString();
-        appComponentFactory = source.readString();
+        compileSdkVersionCodename = source.readString8();
+        appComponentFactory = source.readString8();
         iconRes = source.readInt();
         roundIconRes = source.readInt();
         mHiddenApiPolicy = source.readInt();
         hiddenUntilInstalled = source.readInt() != 0;
-        zygotePreloadName = source.readString();
+        zygotePreloadName = source.readString8();
         gwpAsanMode = source.readInt();
     }
 
diff --git a/core/java/android/content/pm/ComponentInfo.java b/core/java/android/content/pm/ComponentInfo.java
index 362098c447cea..628bcd70cdf64 100644
--- a/core/java/android/content/pm/ComponentInfo.java
+++ b/core/java/android/content/pm/ComponentInfo.java
@@ -197,8 +197,8 @@ public class ComponentInfo extends PackageItemInfo {
     public void writeToParcel(Parcel dest, int parcelableFlags) {
         super.writeToParcel(dest, parcelableFlags);
         applicationInfo.writeToParcel(dest, parcelableFlags);
-        dest.writeString(processName);
-        dest.writeString(splitName);
+        dest.writeString8(processName);
+        dest.writeString8(splitName);
         dest.writeInt(descriptionRes);
         dest.writeInt(enabled ? 1 : 0);
         dest.writeInt(exported ? 1 : 0);
@@ -208,8 +208,8 @@ public class ComponentInfo extends PackageItemInfo {
     protected ComponentInfo(Parcel source) {
         super(source);
         applicationInfo = ApplicationInfo.CREATOR.createFromParcel(source);
-        processName = source.readString();
-        splitName = source.readString();
+        processName = source.readString8();
+        splitName = source.readString8();
         descriptionRes = source.readInt();
         enabled = (source.readInt() != 0);
         exported = (source.readInt() != 0);
diff --git a/core/java/android/content/pm/FeatureInfo.java b/core/java/android/content/pm/FeatureInfo.java
index 9f3ab77062ef1..89269e0d7aa5d 100644
--- a/core/java/android/content/pm/FeatureInfo.java
+++ b/core/java/android/content/pm/FeatureInfo.java
@@ -108,7 +108,7 @@ public class FeatureInfo implements Parcelable {
 
     @Override
     public void writeToParcel(Parcel dest, int parcelableFlags) {
-        dest.writeString(name);
+        dest.writeString8(name);
         dest.writeInt(version);
         dest.writeInt(reqGlEsVersion);
         dest.writeInt(flags);
@@ -138,7 +138,7 @@ public class FeatureInfo implements Parcelable {
     };
 
     private FeatureInfo(Parcel source) {
-        name = source.readString();
+        name = source.readString8();
         version = source.readInt();
         reqGlEsVersion = source.readInt();
         flags = source.readInt();
diff --git a/core/java/android/content/pm/InstrumentationInfo.java b/core/java/android/content/pm/InstrumentationInfo.java
index 574a1ee2d0cea..745a6c1a0dffb 100644
--- a/core/java/android/content/pm/InstrumentationInfo.java
+++ b/core/java/android/content/pm/InstrumentationInfo.java
@@ -157,21 +157,21 @@ public class InstrumentationInfo extends PackageItemInfo implements Parcelable {
 
     public void writeToParcel(Parcel dest, int parcelableFlags) {
         super.writeToParcel(dest, parcelableFlags);
-        dest.writeString(targetPackage);
-        dest.writeString(targetProcesses);
-        dest.writeString(sourceDir);
-        dest.writeString(publicSourceDir);
+        dest.writeString8(targetPackage);
+        dest.writeString8(targetProcesses);
+        dest.writeString8(sourceDir);
+        dest.writeString8(publicSourceDir);
         dest.writeStringArray(splitNames);
         dest.writeStringArray(splitSourceDirs);
         dest.writeStringArray(splitPublicSourceDirs);
         dest.writeSparseArray((SparseArray) splitDependencies);
-        dest.writeString(dataDir);
-        dest.writeString(deviceProtectedDataDir);
-        dest.writeString(credentialProtectedDataDir);
-        dest.writeString(primaryCpuAbi);
-        dest.writeString(secondaryCpuAbi);
-        dest.writeString(nativeLibraryDir);
-        dest.writeString(secondaryNativeLibraryDir);
+        dest.writeString8(dataDir);
+        dest.writeString8(deviceProtectedDataDir);
+        dest.writeString8(credentialProtectedDataDir);
+        dest.writeString8(primaryCpuAbi);
+        dest.writeString8(secondaryCpuAbi);
+        dest.writeString8(nativeLibraryDir);
+        dest.writeString8(secondaryNativeLibraryDir);
         dest.writeInt((handleProfiling == false) ? 0 : 1);
         dest.writeInt((functionalTest == false) ? 0 : 1);
     }
@@ -189,21 +189,21 @@ public class InstrumentationInfo extends PackageItemInfo implements Parcelable {
     @SuppressWarnings("unchecked")
     private InstrumentationInfo(Parcel source) {
         super(source);
-        targetPackage = source.readString();
-        targetProcesses = source.readString();
-        sourceDir = source.readString();
-        publicSourceDir = source.readString();
+        targetPackage = source.readString8();
+        targetProcesses = source.readString8();
+        sourceDir = source.readString8();
+        publicSourceDir = source.readString8();
         splitNames = source.readStringArray();
         splitSourceDirs = source.readStringArray();
         splitPublicSourceDirs = source.readStringArray();
         splitDependencies = source.readSparseArray(null);
-        dataDir = source.readString();
-        deviceProtectedDataDir = source.readString();
-        credentialProtectedDataDir = source.readString();
-        primaryCpuAbi = source.readString();
-        secondaryCpuAbi = source.readString();
-        nativeLibraryDir = source.readString();
-        secondaryNativeLibraryDir = source.readString();
+        dataDir = source.readString8();
+        deviceProtectedDataDir = source.readString8();
+        credentialProtectedDataDir = source.readString8();
+        primaryCpuAbi = source.readString8();
+        secondaryCpuAbi = source.readString8();
+        nativeLibraryDir = source.readString8();
+        secondaryNativeLibraryDir = source.readString8();
         handleProfiling = source.readInt() != 0;
         functionalTest = source.readInt() != 0;
     }
diff --git a/core/java/android/content/pm/PackageInfo.java b/core/java/android/content/pm/PackageInfo.java
index 85c698f3fb0c4..bb56ef7fd3a0b 100644
--- a/core/java/android/content/pm/PackageInfo.java
+++ b/core/java/android/content/pm/PackageInfo.java
@@ -441,14 +441,14 @@ public class PackageInfo implements Parcelable {
     public void writeToParcel(Parcel dest, int parcelableFlags) {
         // Allow ApplicationInfo to be squashed.
         final boolean prevAllowSquashing = dest.allowSquashing();
-        dest.writeString(packageName);
+        dest.writeString8(packageName);
         dest.writeStringArray(splitNames);
         dest.writeInt(versionCode);
         dest.writeInt(versionCodeMajor);
-        dest.writeString(versionName);
+        dest.writeString8(versionName);
         dest.writeInt(baseRevisionCode);
         dest.writeIntArray(splitRevisionCodes);
-        dest.writeString(sharedUserId);
+        dest.writeString8(sharedUserId);
         dest.writeInt(sharedUserLabel);
         if (applicationInfo != null) {
             dest.writeInt(1);
@@ -475,14 +475,14 @@ public class PackageInfo implements Parcelable {
         dest.writeInt(isStub ? 1 : 0);
         dest.writeInt(coreApp ? 1 : 0);
         dest.writeInt(requiredForAllUsers ? 1 : 0);
-        dest.writeString(restrictedAccountType);
-        dest.writeString(requiredAccountType);
-        dest.writeString(overlayTarget);
-        dest.writeString(overlayCategory);
+        dest.writeString8(restrictedAccountType);
+        dest.writeString8(requiredAccountType);
+        dest.writeString8(overlayTarget);
+        dest.writeString8(overlayCategory);
         dest.writeInt(overlayPriority);
         dest.writeBoolean(mOverlayIsStatic);
         dest.writeInt(compileSdkVersion);
-        dest.writeString(compileSdkVersionCodename);
+        dest.writeString8(compileSdkVersionCodename);
         if (signingInfo != null) {
             dest.writeInt(1);
             signingInfo.writeToParcel(dest, parcelableFlags);
@@ -508,14 +508,14 @@ public class PackageInfo implements Parcelable {
 
     @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P, trackingBug = 115609023)
     private PackageInfo(Parcel source) {
-        packageName = source.readString();
+        packageName = source.readString8();
         splitNames = source.createStringArray();
         versionCode = source.readInt();
         versionCodeMajor = source.readInt();
-        versionName = source.readString();
+        versionName = source.readString8();
         baseRevisionCode = source.readInt();
         splitRevisionCodes = source.createIntArray();
-        sharedUserId = source.readString();
+        sharedUserId = source.readString8();
         sharedUserLabel = source.readInt();
         int hasApp = source.readInt();
         if (hasApp != 0) {
@@ -540,14 +540,14 @@ public class PackageInfo implements Parcelable {
         isStub = source.readInt() != 0;
         coreApp = source.readInt() != 0;
         requiredForAllUsers = source.readInt() != 0;
-        restrictedAccountType = source.readString();
-        requiredAccountType = source.readString();
-        overlayTarget = source.readString();
-        overlayCategory = source.readString();
+        restrictedAccountType = source.readString8();
+        requiredAccountType = source.readString8();
+        overlayTarget = source.readString8();
+        overlayCategory = source.readString8();
         overlayPriority = source.readInt();
         mOverlayIsStatic = source.readBoolean();
         compileSdkVersion = source.readInt();
-        compileSdkVersionCodename = source.readString();
+        compileSdkVersionCodename = source.readString8();
         int hasSigningInfo = source.readInt();
         if (hasSigningInfo != 0) {
             signingInfo = SigningInfo.CREATOR.createFromParcel(source);
diff --git a/core/java/android/content/pm/PackageItemInfo.java b/core/java/android/content/pm/PackageItemInfo.java
index 7fd5531bf20d2..d41ace5bcf620 100644
--- a/core/java/android/content/pm/PackageItemInfo.java
+++ b/core/java/android/content/pm/PackageItemInfo.java
@@ -422,8 +422,8 @@ public class PackageItemInfo {
     }
 
     public void writeToParcel(Parcel dest, int parcelableFlags) {
-        dest.writeString(name);
-        dest.writeString(packageName);
+        dest.writeString8(name);
+        dest.writeString8(packageName);
         dest.writeInt(labelRes);
         TextUtils.writeToParcel(nonLocalizedLabel, dest, parcelableFlags);
         dest.writeInt(icon);
@@ -452,8 +452,8 @@ public class PackageItemInfo {
     }
 
     protected PackageItemInfo(Parcel source) {
-        name = source.readString();
-        packageName = source.readString();
+        name = source.readString8();
+        packageName = source.readString8();
         labelRes = source.readInt();
         nonLocalizedLabel
                 = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(source);
diff --git a/core/java/android/content/pm/PackageParserCacheHelper.java b/core/java/android/content/pm/PackageParserCacheHelper.java
index 44def3321c341..8212224e114c9 100644
--- a/core/java/android/content/pm/PackageParserCacheHelper.java
+++ b/core/java/android/content/pm/PackageParserCacheHelper.java
@@ -78,10 +78,19 @@ public class PackageParserCacheHelper {
         /**
          * Read an string index from a parcel, and returns the corresponding string from the pool.
          */
-        @Override
         public String readString(Parcel p) {
             return mStrings.get(p.readInt());
         }
+
+        @Override
+        public String readString8(Parcel p) {
+            return readString(p);
+        }
+
+        @Override
+        public String readString16(Parcel p) {
+            return readString(p);
+        }
     }
 
     /**
@@ -110,7 +119,6 @@ public class PackageParserCacheHelper {
          * Instead of writing a string directly to a parcel, this method adds it to the pool,
          * and write the index in the pool to the parcel.
          */
-        @Override
         public void writeString(Parcel p, String s) {
             final Integer cur = mIndexes.get(s);
             if (cur != null) {
@@ -133,6 +141,16 @@ public class PackageParserCacheHelper {
             }
         }
 
+        @Override
+        public void writeString8(Parcel p, String s) {
+            writeString(p, s);
+        }
+
+        @Override
+        public void writeString16(Parcel p, String s) {
+            writeString(p, s);
+        }
+
         /**
          * Closes a parcel by appending the string pool at the end and updating the pool offset,
          * which it assumes is at the first byte.  It also uninstalls itself as a read-write helper.
diff --git a/core/java/android/content/pm/ProviderInfo.java b/core/java/android/content/pm/ProviderInfo.java
index 07d42dc823c4e..3984ade73d6ca 100644
--- a/core/java/android/content/pm/ProviderInfo.java
+++ b/core/java/android/content/pm/ProviderInfo.java
@@ -145,9 +145,9 @@ public final class ProviderInfo extends ComponentInfo
 
     @Override public void writeToParcel(Parcel out, int parcelableFlags) {
         super.writeToParcel(out, parcelableFlags);
-        out.writeString(authority);
-        out.writeString(readPermission);
-        out.writeString(writePermission);
+        out.writeString8(authority);
+        out.writeString8(readPermission);
+        out.writeString8(writePermission);
         out.writeInt(grantUriPermissions ? 1 : 0);
         out.writeInt(forceUriPermissions ? 1 : 0);
         out.writeTypedArray(uriPermissionPatterns, parcelableFlags);
@@ -175,9 +175,9 @@ public final class ProviderInfo extends ComponentInfo
 
     private ProviderInfo(Parcel in) {
         super(in);
-        authority = in.readString();
-        readPermission = in.readString();
-        writePermission = in.readString();
+        authority = in.readString8();
+        readPermission = in.readString8();
+        writePermission = in.readString8();
         grantUriPermissions = in.readInt() != 0;
         forceUriPermissions = in.readInt() != 0;
         uriPermissionPatterns = in.createTypedArray(PatternMatcher.CREATOR);
diff --git a/core/java/android/content/pm/ServiceInfo.java b/core/java/android/content/pm/ServiceInfo.java
index 5f90b6c43c609..d3f9e2486a643 100644
--- a/core/java/android/content/pm/ServiceInfo.java
+++ b/core/java/android/content/pm/ServiceInfo.java
@@ -244,7 +244,7 @@ public class ServiceInfo extends ComponentInfo
 
     public void writeToParcel(Parcel dest, int parcelableFlags) {
         super.writeToParcel(dest, parcelableFlags);
-        dest.writeString(permission);
+        dest.writeString8(permission);
         dest.writeInt(flags);
         dest.writeInt(mForegroundServiceType);
     }
@@ -261,7 +261,7 @@ public class ServiceInfo extends ComponentInfo
 
     private ServiceInfo(Parcel source) {
         super(source);
-        permission = source.readString();
+        permission = source.readString8();
         flags = source.readInt();
         mForegroundServiceType = source.readInt();
     }
diff --git a/core/java/android/net/Uri.java b/core/java/android/net/Uri.java
index 525bbfdbb06d7..1cb4fe8cf4e74 100644
--- a/core/java/android/net/Uri.java
+++ b/core/java/android/net/Uri.java
@@ -500,7 +500,7 @@ public abstract class Uri implements Parcelable, Comparable<Uri> {
         }
 
         static Uri readFrom(Parcel parcel) {
-            return new StringUri(parcel.readString());
+            return new StringUri(parcel.readString8());
         }
 
         public int describeContents() {
@@ -509,7 +509,7 @@ public abstract class Uri implements Parcelable, Comparable<Uri> {
 
         public void writeToParcel(Parcel parcel, int flags) {
             parcel.writeInt(TYPE_ID);
-            parcel.writeString(uriString);
+            parcel.writeString8(uriString);
         }
 
         /** Cached scheme separator index. */
@@ -875,7 +875,7 @@ public abstract class Uri implements Parcelable, Comparable<Uri> {
 
         static Uri readFrom(Parcel parcel) {
             return new OpaqueUri(
-                parcel.readString(),
+                parcel.readString8(),
                 Part.readFrom(parcel),
                 Part.readFrom(parcel)
             );
@@ -887,7 +887,7 @@ public abstract class Uri implements Parcelable, Comparable<Uri> {
 
         public void writeToParcel(Parcel parcel, int flags) {
             parcel.writeInt(TYPE_ID);
-            parcel.writeString(scheme);
+            parcel.writeString8(scheme);
             ssp.writeTo(parcel);
             fragment.writeTo(parcel);
         }
@@ -1195,7 +1195,7 @@ public abstract class Uri implements Parcelable, Comparable<Uri> {
 
         static Uri readFrom(Parcel parcel) {
             return new HierarchicalUri(
-                parcel.readString(),
+                parcel.readString8(),
                 Part.readFrom(parcel),
                 PathPart.readFrom(parcel),
                 Part.readFrom(parcel),
@@ -1209,7 +1209,7 @@ public abstract class Uri implements Parcelable, Comparable<Uri> {
 
         public void writeToParcel(Parcel parcel, int flags) {
             parcel.writeInt(TYPE_ID);
-            parcel.writeString(scheme);
+            parcel.writeString8(scheme);
             authority.writeTo(parcel);
             path.writeTo(parcel);
             query.writeTo(parcel);
@@ -2028,7 +2028,7 @@ public abstract class Uri implements Parcelable, Comparable<Uri> {
                     + mCanonicalRepresentation + ")");
             }
             parcel.writeInt(mCanonicalRepresentation);
-            parcel.writeString(canonicalValue);
+            parcel.writeString8(canonicalValue);
         }
     }
 
@@ -2060,7 +2060,7 @@ public abstract class Uri implements Parcelable, Comparable<Uri> {
 
         static Part readFrom(Parcel parcel) {
             int representation = parcel.readInt();
-            String value = parcel.readString();
+            String value = parcel.readString8();
             switch (representation) {
                 case REPRESENTATION_ENCODED:
                     return fromEncoded(value);
@@ -2251,9 +2251,9 @@ public abstract class Uri implements Parcelable, Comparable<Uri> {
             int representation = parcel.readInt();
             switch (representation) {
                 case REPRESENTATION_ENCODED:
-                    return fromEncoded(parcel.readString());
+                    return fromEncoded(parcel.readString8());
                 case REPRESENTATION_DECODED:
-                    return fromDecoded(parcel.readString());
+                    return fromDecoded(parcel.readString8());
                 default:
                     throw new IllegalArgumentException("Unknown representation: " + representation);
             }
diff --git a/core/java/android/os/Parcel.java b/core/java/android/os/Parcel.java
index f0b7b5fa5a1a2..93f6607ff9d46 100644
--- a/core/java/android/os/Parcel.java
+++ b/core/java/android/os/Parcel.java
@@ -307,7 +307,9 @@ public final class Parcel {
     @FastNative
     private static native void nativeWriteDouble(long nativePtr, double val);
     @FastNative
-    static native void nativeWriteString(long nativePtr, String val);
+    private static native void nativeWriteString8(long nativePtr, String val);
+    @FastNative
+    private static native void nativeWriteString16(long nativePtr, String val);
     @FastNative
     private static native void nativeWriteStrongBinder(long nativePtr, IBinder val);
     @FastNative
@@ -325,7 +327,9 @@ public final class Parcel {
     @CriticalNative
     private static native double nativeReadDouble(long nativePtr);
     @FastNative
-    static native String nativeReadString(long nativePtr);
+    private static native String nativeReadString8(long nativePtr);
+    @FastNative
+    private static native String nativeReadString16(long nativePtr);
     @FastNative
     private static native IBinder nativeReadStrongBinder(long nativePtr);
     @FastNative
@@ -386,8 +390,12 @@ public final class Parcel {
          * must use {@link #writeStringNoHelper(String)} to avoid
          * infinity recursive calls.
          */
-        public void writeString(Parcel p, String s) {
-            nativeWriteString(p.mNativePtr, s);
+        public void writeString8(Parcel p, String s) {
+            p.writeString8NoHelper(s);
+        }
+
+        public void writeString16(Parcel p, String s) {
+            p.writeString16NoHelper(s);
         }
 
         /**
@@ -395,8 +403,12 @@ public final class Parcel {
          * must use {@link #readStringNoHelper()} to avoid
          * infinity recursive calls.
          */
-        public String readString(Parcel p) {
-            return nativeReadString(p.mNativePtr);
+        public String readString8(Parcel p) {
+            return p.readString8NoHelper();
+        }
+
+        public String readString16(Parcel p) {
+            return p.readString16NoHelper();
         }
     }
 
@@ -759,7 +771,17 @@ public final class Parcel {
      * growing dataCapacity() if needed.
      */
     public final void writeString(@Nullable String val) {
-        mReadWriteHelper.writeString(this, val);
+        writeString16(val);
+    }
+
+    /** {@hide} */
+    public final void writeString8(@Nullable String val) {
+        mReadWriteHelper.writeString8(this, val);
+    }
+
+    /** {@hide} */
+    public final void writeString16(@Nullable String val) {
+        mReadWriteHelper.writeString16(this, val);
     }
 
     /**
@@ -770,7 +792,17 @@ public final class Parcel {
      * @hide
      */
     public void writeStringNoHelper(@Nullable String val) {
-        nativeWriteString(mNativePtr, val);
+        writeString16NoHelper(val);
+    }
+
+    /** {@hide} */
+    public void writeString8NoHelper(@Nullable String val) {
+        nativeWriteString8(mNativePtr, val);
+    }
+
+    /** {@hide} */
+    public void writeString16NoHelper(@Nullable String val) {
+        nativeWriteString16(mNativePtr, val);
     }
 
     /**
@@ -2337,7 +2369,17 @@ public final class Parcel {
      */
     @Nullable
     public final String readString() {
-        return mReadWriteHelper.readString(this);
+        return readString16();
+    }
+
+    /** {@hide} */
+    public final @Nullable String readString8() {
+        return mReadWriteHelper.readString8(this);
+    }
+
+    /** {@hide} */
+    public final @Nullable String readString16() {
+        return mReadWriteHelper.readString16(this);
     }
 
     /**
@@ -2347,9 +2389,18 @@ public final class Parcel {
      *
      * @hide
      */
-    @Nullable
-    public String readStringNoHelper() {
-        return nativeReadString(mNativePtr);
+    public @Nullable String readStringNoHelper() {
+        return readString16NoHelper();
+    }
+
+    /** {@hide} */
+    public @Nullable String readString8NoHelper() {
+        return nativeReadString8(mNativePtr);
+    }
+
+    /** {@hide} */
+    public @Nullable String readString16NoHelper() {
+        return nativeReadString16(mNativePtr);
     }
 
     /**
diff --git a/core/java/android/text/TextUtils.java b/core/java/android/text/TextUtils.java
index df4ead13d5cb5..28639b3ea2f7f 100644
--- a/core/java/android/text/TextUtils.java
+++ b/core/java/android/text/TextUtils.java
@@ -748,7 +748,7 @@ public class TextUtils {
             int parcelableFlags) {
         if (cs instanceof Spanned) {
             p.writeInt(0);
-            p.writeString(cs.toString());
+            p.writeString8(cs.toString());
 
             Spanned sp = (Spanned) cs;
             Object[] os = sp.getSpans(0, cs.length(), Object.class);
@@ -785,9 +785,9 @@ public class TextUtils {
         } else {
             p.writeInt(1);
             if (cs != null) {
-                p.writeString(cs.toString());
+                p.writeString8(cs.toString());
             } else {
-                p.writeString(null);
+                p.writeString8(null);
             }
         }
     }
@@ -807,7 +807,7 @@ public class TextUtils {
         public CharSequence createFromParcel(Parcel p) {
             int kind = p.readInt();
 
-            String string = p.readString();
+            String string = p.readString8();
             if (string == null) {
                 return null;
             }
diff --git a/core/java/android/widget/RemoteViews.java b/core/java/android/widget/RemoteViews.java
index 7f6c0d2077f1b..7016c5cf0de6f 100644
--- a/core/java/android/widget/RemoteViews.java
+++ b/core/java/android/widget/RemoteViews.java
@@ -1213,7 +1213,7 @@ public class RemoteViews implements Parcelable, Filter {
 
         BitmapReflectionAction(Parcel in) {
             viewId = in.readInt();
-            methodName = in.readString();
+            methodName = in.readString8();
             bitmapId = in.readInt();
             bitmap = mBitmapCache.getBitmapForId(bitmapId);
         }
@@ -1221,7 +1221,7 @@ public class RemoteViews implements Parcelable, Filter {
         @Override
         public void writeToParcel(Parcel dest, int flags) {
             dest.writeInt(viewId);
-            dest.writeString(methodName);
+            dest.writeString8(methodName);
             dest.writeInt(bitmapId);
         }
 
@@ -1282,7 +1282,7 @@ public class RemoteViews implements Parcelable, Filter {
 
         ReflectionAction(Parcel in) {
             this.viewId = in.readInt();
-            this.methodName = in.readString();
+            this.methodName = in.readString8();
             this.type = in.readInt();
             //noinspection ConstantIfStatement
             if (false) {
@@ -1318,7 +1318,7 @@ public class RemoteViews implements Parcelable, Filter {
                     this.value = (char)in.readInt();
                     break;
                 case STRING:
-                    this.value = in.readString();
+                    this.value = in.readString8();
                     break;
                 case CHAR_SEQUENCE:
                     this.value = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
@@ -1347,7 +1347,7 @@ public class RemoteViews implements Parcelable, Filter {
 
         public void writeToParcel(Parcel out, int flags) {
             out.writeInt(this.viewId);
-            out.writeString(this.methodName);
+            out.writeString8(this.methodName);
             out.writeInt(this.type);
             //noinspection ConstantIfStatement
             if (false) {
@@ -1383,7 +1383,7 @@ public class RemoteViews implements Parcelable, Filter {
                     out.writeInt((int)((Character)this.value).charValue());
                     break;
                 case STRING:
-                    out.writeString((String)this.value);
+                    out.writeString8((String)this.value);
                     break;
                 case CHAR_SEQUENCE:
                     TextUtils.writeToParcel((CharSequence)this.value, out, flags);
diff --git a/core/jni/android_os_Parcel.cpp b/core/jni/android_os_Parcel.cpp
index 483b455965f79..e7a2fb428b508 100644
--- a/core/jni/android_os_Parcel.cpp
+++ b/core/jni/android_os_Parcel.cpp
@@ -273,7 +273,28 @@ static void android_os_Parcel_writeDouble(JNIEnv* env, jclass clazz, jlong nativ
     }
 }
 
-static void android_os_Parcel_writeString(JNIEnv* env, jclass clazz, jlong nativePtr, jstring val)
+static void android_os_Parcel_writeString8(JNIEnv* env, jclass clazz, jlong nativePtr, jstring val)
+{
+    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
+    if (parcel != NULL) {
+        status_t err = NO_MEMORY;
+        if (val) {
+            const size_t len = env->GetStringUTFLength(val);
+            const char* str = env->GetStringUTFChars(val, 0);
+            if (str) {
+                err = parcel->writeString8(str, len);
+                env->ReleaseStringUTFChars(val, str);
+            }
+        } else {
+            err = parcel->writeString8(NULL, 0);
+        }
+        if (err != NO_ERROR) {
+            signalExceptionForError(env, clazz, err);
+        }
+    }
+}
+
+static void android_os_Parcel_writeString16(JNIEnv* env, jclass clazz, jlong nativePtr, jstring val)
 {
     Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
     if (parcel != NULL) {
@@ -444,7 +465,21 @@ static jdouble android_os_Parcel_readDouble(jlong nativePtr)
     return 0;
 }
 
-static jstring android_os_Parcel_readString(JNIEnv* env, jclass clazz, jlong nativePtr)
+static jstring android_os_Parcel_readString8(JNIEnv* env, jclass clazz, jlong nativePtr)
+{
+    Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
+    if (parcel != NULL) {
+        size_t len;
+        const char* str = parcel->readString8Inplace(&len);
+        if (str) {
+            return env->NewStringUTF(str);
+        }
+        return NULL;
+    }
+    return NULL;
+}
+
+static jstring android_os_Parcel_readString16(JNIEnv* env, jclass clazz, jlong nativePtr)
 {
     Parcel* parcel = reinterpret_cast<Parcel*>(nativePtr);
     if (parcel != NULL) {
@@ -722,7 +757,9 @@ static const JNINativeMethod gParcelMethods[] = {
     // @FastNative
     {"nativeWriteDouble",         "(JD)V", (void*)android_os_Parcel_writeDouble},
     // @FastNative
-    {"nativeWriteString",         "(JLjava/lang/String;)V", (void*)android_os_Parcel_writeString},
+    {"nativeWriteString8",        "(JLjava/lang/String;)V", (void*)android_os_Parcel_writeString8},
+    // @FastNative
+    {"nativeWriteString16",       "(JLjava/lang/String;)V", (void*)android_os_Parcel_writeString16},
     // @FastNative
     {"nativeWriteStrongBinder",   "(JLandroid/os/IBinder;)V", (void*)android_os_Parcel_writeStrongBinder},
     // @FastNative
@@ -740,7 +777,9 @@ static const JNINativeMethod gParcelMethods[] = {
     // @CriticalNative
     {"nativeReadDouble",          "(J)D", (void*)android_os_Parcel_readDouble},
     // @FastNative
-    {"nativeReadString",          "(J)Ljava/lang/String;", (void*)android_os_Parcel_readString},
+    {"nativeReadString8",         "(J)Ljava/lang/String;", (void*)android_os_Parcel_readString8},
+    // @FastNative
+    {"nativeReadString16",        "(J)Ljava/lang/String;", (void*)android_os_Parcel_readString16},
     // @FastNative
     {"nativeReadStrongBinder",    "(J)Landroid/os/IBinder;", (void*)android_os_Parcel_readStrongBinder},
     // @FastNative
diff --git a/core/tests/benchmarks/src/android/os/ParcelStringBenchmark.java b/core/tests/benchmarks/src/android/os/ParcelStringBenchmark.java
new file mode 100644
index 0000000000000..daa90c28e0c42
--- /dev/null
+++ b/core/tests/benchmarks/src/android/os/ParcelStringBenchmark.java
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.os;
+
+import com.google.caliper.AfterExperiment;
+import com.google.caliper.BeforeExperiment;
+import com.google.caliper.Param;
+
+public class ParcelStringBenchmark {
+
+    @Param({"com.example.typical_package_name", "從不喜歡孤單一個 - 蘇永康／吳雨霏"})
+    String mValue;
+
+    private Parcel mParcel;
+
+    @BeforeExperiment
+    protected void setUp() {
+        mParcel = Parcel.obtain();
+    }
+
+    @AfterExperiment
+    protected void tearDown() {
+        mParcel.recycle();
+        mParcel = null;
+    }
+
+    public void timeWriteString8(int reps) {
+        for (int i = 0; i < reps; i++) {
+            mParcel.setDataPosition(0);
+            mParcel.writeString8(mValue);
+        }
+    }
+
+    public void timeReadString8(int reps) {
+        mParcel.writeString8(mValue);
+
+        for (int i = 0; i < reps; i++) {
+            mParcel.setDataPosition(0);
+            mParcel.readString8();
+        }
+    }
+
+    public void timeWriteString16(int reps) {
+        for (int i = 0; i < reps; i++) {
+            mParcel.setDataPosition(0);
+            mParcel.writeString16(mValue);
+        }
+    }
+
+    public void timeReadString16(int reps) {
+        mParcel.writeString16(mValue);
+
+        for (int i = 0; i < reps; i++) {
+            mParcel.setDataPosition(0);
+            mParcel.readString16();
+        }
+    }
+}
diff --git a/core/tests/coretests/src/android/os/ParcelTest.java b/core/tests/coretests/src/android/os/ParcelTest.java
index 46873b9eb70bd..dcb3e2f23da8b 100644
--- a/core/tests/coretests/src/android/os/ParcelTest.java
+++ b/core/tests/coretests/src/android/os/ParcelTest.java
@@ -87,4 +87,27 @@ public class ParcelTest {
 
         p.recycle();
     }
+
+    /**
+     * Verify that writing/reading UTF-8 and UTF-16 strings works well.
+     */
+    @Test
+    public void testStrings() {
+        final String[] strings = {
+                null, "", "abc\0def", "com.example.typical_package_name",
+                "從不喜歡孤單一個 - 蘇永康／吳雨霏", "example"
+        };
+
+        final Parcel p = Parcel.obtain();
+        for (String string : strings) {
+            p.writeString8(string);
+            p.writeString16(string);
+        }
+
+        p.setDataPosition(0);
+        for (String string : strings) {
+            assertEquals(string, p.readString8());
+            assertEquals(string, p.readString16());
+        }
+    }
 }