Cancel camera launch on screen off.

Bug: 7452793
Change-Id: Ic043a0076154d2ce4dcb0b26bae3958c35a6cd67

Author: John Spurlock

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

@@ -64,7 +64,10 @@ interface Callbacks {
     private final Runnable mLaunchCameraRunnable = new Runnable() {
         @Override
         public void run() {
+            if (!mTransitioning)
+                return;
             mLaunchCameraStart = SystemClock.uptimeMillis();
+            if (DEBUG) Log.d(TAG, "Launching camera at " + mLaunchCameraStart);
             mActivityLauncher.launchCamera();
         }};
 
@@ -274,7 +277,7 @@ public boolean onUserInteraction(int action) {
 
     @Override
     protected void onFocusLost() {
-        Log.d(TAG, "onFocusLost");
+        if (DEBUG) Log.d(TAG, "onFocusLost");
         cancelTransitionToCamera();
         super.onFocusLost();
     }
@@ -293,6 +296,11 @@ public void onChallengeActive(boolean challengeActive) {
         }
     }
 
+    public void onScreenTurnedOff() {
+        if (DEBUG) Log.d(TAG, "onScreenTurnedOff");
+        reset();
+    }
+
     private void rescheduleTransitionToCamera() {
         if (DEBUG) Log.d(TAG, "rescheduleTransitionToCamera at " + SystemClock.uptimeMillis());
         mHandler.removeCallbacks(mTransitionToCameraRunnable);

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

@@ -25,6 +25,7 @@
 import android.content.pm.ResolveInfo;
 import android.os.Bundle;
 import android.os.RemoteException;
+import android.os.SystemClock;
 import android.os.UserHandle;
 import android.provider.MediaStore;
 import android.util.Log;
@@ -132,6 +133,8 @@ public void launchActivity(final Intent intent, boolean showsWhileLocked, boolea
                 Log.w(TAG, "can't dismiss keyguard on launch");
             }
             try {
+                if (DEBUG) Log.d(TAG, String.format("Starting activity for intent %s at %s",
+                        intent, SystemClock.uptimeMillis()));
                 context.startActivityAsUser(intent, animation,
                         new UserHandle(UserHandle.USER_CURRENT));
             } catch (ActivityNotFoundException e) {

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

@@ -39,6 +39,7 @@
 import android.os.Looper;
 import android.os.Parcel;
 import android.os.Parcelable;
+import android.os.SystemClock;
 import android.os.UserHandle;
 import android.os.UserManager;
 import android.util.AttributeSet;
@@ -708,13 +709,18 @@ public void onScreenTurnedOn() {
 
     @Override
     public void onScreenTurnedOff() {
-        if (DEBUG) Log.d(TAG, "screen off, instance " + Integer.toHexString(hashCode()));
+        if (DEBUG) Log.d(TAG, String.format("screen off, instance %s at %s",
+                Integer.toHexString(hashCode()), SystemClock.uptimeMillis()));
         // Once the screen turns off, we no longer consider this to be first boot and we want the
         // biometric unlock to start next time keyguard is shown.
         KeyguardUpdateMonitor.getInstance(mContext).setAlternateUnlockEnabled(true);
         saveStickyWidgetIndex();
         showPrimarySecurityScreen(true);
         getSecurityView(mCurrentSecuritySelection).onPause();
+        CameraWidgetFrame cameraPage = findCameraPage();
+        if (cameraPage != null) {
+            cameraPage.onScreenTurnedOff();
+        }
     }
 
     @Override
@@ -1140,6 +1146,15 @@ private void showAppropriateWidgetPage() {
         mAppWidgetContainer.setCurrentPage(pageToShow);
     }
 
+    private CameraWidgetFrame findCameraPage() {
+        for (int i = mAppWidgetContainer.getChildCount() - 1; i >= 0; i--) {
+            if (isCameraPage(i)) {
+                return (CameraWidgetFrame) mAppWidgetContainer.getChildAt(i);
+            }
+        }
+        return null;
+    }
+
     private boolean isCameraPage(int pageIndex) {
         View v = mAppWidgetContainer.getChildAt(pageIndex);
         return v != null && v instanceof CameraWidgetFrame;