am c6e570db: Merge "Fix camera disambiguation in secure keyguard" into jb-mr1-dev

* commit 'c6e570dbadc3689bc80c0516492a3209d5f6742b':
  Fix camera disambiguation in secure keyguard

core/java/com/android/internal/widget/LockPatternUtils.java

@@ -125,7 +125,9 @@ public class LockPatternUtils {
     private final ContentResolver mContentResolver;
     private DevicePolicyManager mDevicePolicyManager;
     private ILockSettings mLockSettingsService;
-    private int mCurrentUserId = UserHandle.USER_NULL;
+
+    // The current user is set by KeyguardViewMediator and shared by all LockPatternUtils.
+    private static volatile int sCurrentUserId = UserHandle.USER_NULL;
 
     public DevicePolicyManager getDevicePolicyManager() {
         if (mDevicePolicyManager == null) {
@@ -215,13 +217,13 @@ public class LockPatternUtils {
     }
 
     public void setCurrentUser(int userId) {
-        mCurrentUserId = userId;
+        sCurrentUserId = userId;
     }
 
     public int getCurrentUser() {
-        if (mCurrentUserId != UserHandle.USER_NULL) {
+        if (sCurrentUserId != UserHandle.USER_NULL) {
             // Someone is regularly updating using setCurrentUser() use that value.
-            return mCurrentUserId;
+            return sCurrentUserId;
         }
         try {
             return ActivityManagerNative.getDefault().getCurrentUser().id;

policy/src/com/android/internal/policy/impl/keyguard/KeyguardFaceUnlockView.java

@@ -153,7 +153,8 @@ public class KeyguardFaceUnlockView extends LinearLayout implements KeyguardSecu
             if (mBiometricUnlock != null) {
                 mBiometricUnlock.stop();
             }
-            mLockPatternUtils.setCurrentUser(userId);
+            // No longer required; static value set by KeyguardViewMediator
+            // mLockPatternUtils.setCurrentUser(userId);
         }
     };
 

policy/src/com/android/internal/policy/impl/keyguard/KeyguardSelectorView.java

@@ -23,6 +23,8 @@ import android.content.ActivityNotFoundException;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
 import android.os.RemoteException;
 import android.os.UserHandle;
 import android.provider.MediaStore;
@@ -38,6 +40,8 @@ import com.android.internal.widget.multiwaveview.GlowPadView;
 import com.android.internal.widget.multiwaveview.GlowPadView.OnTriggerListener;
 import com.android.internal.R;
 
+import java.util.List;
+
 public class KeyguardSelectorView extends LinearLayout implements KeyguardSecurityView {
     private static final boolean DEBUG = KeyguardHostView.DEBUG;
     private static final String TAG = "SecuritySelectorView";
@@ -118,12 +122,39 @@ public class KeyguardSelectorView extends LinearLayout implements KeyguardSecuri
         this(context, null);
     }
 
+    private boolean wouldLaunchResolverActivity(Intent intent) {
+        PackageManager packageManager = mContext.getPackageManager();
+        ResolveInfo resolved = packageManager.resolveActivityAsUser(intent,
+                PackageManager.MATCH_DEFAULT_ONLY, mLockPatternUtils.getCurrentUser());
+        final List<ResolveInfo> appList = packageManager.queryIntentActivitiesAsUser(
+                intent, PackageManager.MATCH_DEFAULT_ONLY, mLockPatternUtils.getCurrentUser());
+        // If the list contains the above resolved activity, then it can't be
+        // ResolverActivity itself.
+        for (int i = 0; i < appList.size(); i++) {
+            ResolveInfo tmp = appList.get(i);
+            if (tmp.activityInfo.name.equals(resolved.activityInfo.name)
+                    && tmp.activityInfo.packageName.equals(resolved.activityInfo.packageName)) {
+                return false;
+            }
+        }
+        return true;
+    }
+
     protected void launchCamera() {
         if (mLockPatternUtils.isSecure()) {
             // Launch the secure version of the camera
-            Intent intent = new Intent(MediaStore.INTENT_ACTION_STILL_IMAGE_CAMERA_SECURE);
+            final Intent intent = new Intent(MediaStore.INTENT_ACTION_STILL_IMAGE_CAMERA_SECURE);
             intent.addFlags(Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
-            launchActivity(intent, true);
+
+            if (wouldLaunchResolverActivity(intent)) {
+                // TODO: Show disambiguation dialog instead.
+                // For now, we'll treat this like launching any other app from secure keyguard.
+                // When they do, user sees the system's ResolverActivity which lets them choose
+                // which secure camera to use.
+                launchActivity(intent, false);
+            } else {
+                launchActivity(intent, true);
+            }
         } else {
             // Launch the normal camera
             launchActivity(new Intent(MediaStore.INTENT_ACTION_STILL_IMAGE_CAMERA), false);

policy/src/com/android/internal/policy/impl/keyguard/KeyguardViewMediator.java

@@ -894,6 +894,8 @@ public class KeyguardViewMediator {
 
     /**
      * Update the newUserId. Call while holding WindowManagerService lock.
+     * NOTE: Should only be called by KeyguardViewMediator in response to the user id changing.
+     *
      * @param newUserId The id of the incoming user.
      */
     public void setCurrentUser(int newUserId) {