Move lock task check to shared lib.

Bug: 70294936
Test: Ensure that launcher can check screen pinning state
Change-Id: I2951fb3605525c5cdb7b27b099c95a762322971c

packages/SystemUI/shared/src/com/android/systemui/shared/system/ActivityManagerWrapper.java

@@ -16,6 +16,8 @@
 
 package com.android.systemui.shared.system;
 
+import static android.app.ActivityManager.LOCK_TASK_MODE_NONE;
+import static android.app.ActivityManager.LOCK_TASK_MODE_PINNED;
 import static android.app.ActivityManager.RECENT_IGNORE_UNAVAILABLE;
 import static android.app.WindowConfiguration.ACTIVITY_TYPE_RECENTS;
 import static android.app.WindowConfiguration.ACTIVITY_TYPE_UNDEFINED;
@@ -31,6 +33,7 @@ import android.app.ActivityOptions;
 import android.app.AppGlobals;
 import android.app.IAssistDataReceiver;
 import android.app.WindowConfiguration.ActivityType;
+import android.content.ContentResolver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.ActivityInfo;
@@ -47,6 +50,7 @@ import android.os.Handler;
 import android.os.Looper;
 import android.os.RemoteException;
 import android.os.UserHandle;
+import android.provider.Settings;
 import android.util.IconDrawableFactory;
 import android.util.Log;
 import android.view.IRecentsAnimationController;
@@ -436,4 +440,23 @@ public class ActivityManagerWrapper {
             Log.w(TAG, "Failed to cancel window transition for task=" + taskId, e);
         }
     }
+
+    /**
+     * @return whether there is currently a locked task (ie. in screen pinning).
+     */
+    public boolean isLockToAppActive() {
+        try {
+            return ActivityManager.getService().getLockTaskModeState() != LOCK_TASK_MODE_NONE;
+        } catch (RemoteException e) {
+            return false;
+        }
+    }
+
+    /**
+     * @return whether screen pinning is enabled.
+     */
+    public boolean isLockToAppEnabled() {
+        final ContentResolver cr = AppGlobals.getInitialApplication().getContentResolver();
+        return Settings.System.getInt(cr, Settings.System.LOCK_TO_APP_ENABLED, 0) != 0;
+    }
 }

packages/SystemUI/src/com/android/systemui/recents/Recents.java

@@ -415,7 +415,7 @@ public class Recents extends SystemUI
         final int activityType = runningTask != null
                 ? runningTask.configuration.windowConfiguration.getActivityType()
                 : ACTIVITY_TYPE_UNDEFINED;
-        boolean screenPinningActive = sSystemServicesProxy.isScreenPinningActive();
+        boolean screenPinningActive = ActivityManagerWrapper.getInstance().isLockToAppActive();
         boolean isRunningTaskInHomeOrRecentsStack =
                 activityType == ACTIVITY_TYPE_HOME || activityType == ACTIVITY_TYPE_RECENTS;
         if (runningTask != null && !isRunningTaskInHomeOrRecentsStack && !screenPinningActive) {

packages/SystemUI/src/com/android/systemui/recents/RecentsImpl.java

@@ -386,8 +386,7 @@ public class RecentsImpl implements ActivityOptions.OnAnimationFinishedListener
 
     public void toggleRecents(int growTarget) {
         // Skip preloading if the task is locked
-        SystemServicesProxy ssp = Recents.getSystemServices();
-        if (ssp.isScreenPinningActive()) {
+        if (ActivityManagerWrapper.getInstance().isLockToAppActive()) {
             return;
         }
 
@@ -409,8 +408,8 @@ public class RecentsImpl implements ActivityOptions.OnAnimationFinishedListener
             MutableBoolean isHomeStackVisible = new MutableBoolean(true);
             long elapsedTime = SystemClock.elapsedRealtime() - mLastToggleTime;
 
+            SystemServicesProxy ssp = Recents.getSystemServices();
             if (ssp.isRecentsActivityVisible(isHomeStackVisible)) {
-                RecentsDebugFlags debugFlags = Recents.getDebugFlags();
                 RecentsConfiguration config = Recents.getConfiguration();
                 RecentsActivityLaunchState launchState = config.getLaunchState();
                 if (!launchState.launchedWithAltTab) {
@@ -466,8 +465,7 @@ public class RecentsImpl implements ActivityOptions.OnAnimationFinishedListener
 
     public void preloadRecents() {
         // Skip preloading if the task is locked
-        SystemServicesProxy ssp = Recents.getSystemServices();
-        if (ssp.isScreenPinningActive()) {
+        if (ActivityManagerWrapper.getInstance().isLockToAppActive()) {
             return;
         }
 
@@ -481,6 +479,7 @@ public class RecentsImpl implements ActivityOptions.OnAnimationFinishedListener
         // RecentsActivity) only if there is a task to animate to.  Post this to ensure that we
         // don't block the touch feedback on the nav bar button which triggers this.
         mHandler.post(() -> {
+            SystemServicesProxy ssp = Recents.getSystemServices();
             if (!ssp.isRecentsActivityVisible(null)) {
                 ActivityManager.RunningTaskInfo runningTask =
                         ActivityManagerWrapper.getInstance().getRunningTask();

packages/SystemUI/src/com/android/systemui/recents/misc/SystemServicesProxy.java

@@ -378,29 +378,6 @@ public class SystemServicesProxy {
         }
     }
 
-    /**
-     * Returns a global setting.
-     */
-    public int getGlobalSetting(Context context, String setting) {
-        ContentResolver cr = context.getContentResolver();
-        return Settings.Global.getInt(cr, setting, 0);
-    }
-
-    /**
-     * Returns a system setting.
-     */
-    public int getSystemSetting(Context context, String setting) {
-        ContentResolver cr = context.getContentResolver();
-        return Settings.System.getInt(cr, setting, 0);
-    }
-
-    /**
-     * Returns a system property.
-     */
-    public String getSystemProperty(String key) {
-        return SystemProperties.get(key);
-    }
-
     /**
      * Returns the smallest width/height.
      */

packages/SystemUI/src/com/android/systemui/recents/views/TaskStackView.java

@@ -95,6 +95,7 @@ import com.android.systemui.recents.views.grid.GridTaskView;
 import com.android.systemui.recents.views.grid.TaskGridLayoutAlgorithm;
 import com.android.systemui.recents.views.grid.TaskViewFocusFrame;
 
+import com.android.systemui.shared.system.ActivityManagerWrapper;
 import java.io.PrintWriter;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
@@ -2187,8 +2188,7 @@ public class TaskStackView extends FrameLayout implements TaskStack.TaskStackCal
     private void readSystemFlags() {
         SystemServicesProxy ssp = Recents.getSystemServices();
         mTouchExplorationEnabled = ssp.isTouchExplorationEnabled();
-        mScreenPinningEnabled = ssp.getSystemSetting(getContext(),
-                Settings.System.LOCK_TO_APP_ENABLED) != 0;
+        mScreenPinningEnabled = ActivityManagerWrapper.getInstance().isLockToAppEnabled();
     }
 
     private void updateStackActionButtonVisibility() {