Fix BiometricDialog onConfigChange crash

BiometricDialog was crashing during orientation changes due to
incorrectly tracked window state.

Test: With BiometricPromptDemo, orientation changes work again
Test: Unplub USB, enable battery saver, start authentication,
      plug in USB. Changes from dark theme to light theme
Test: BiometricDialog width is correct before/after rotation

Change-Id: Id6021f3defded1bfd71c008b4ebdab2e13f9f515
Fixes: 118835751

packages/SystemUI/src/com/android/systemui/biometrics/BiometricDialogImpl.java

@@ -66,7 +66,7 @@ public class BiometricDialogImpl extends SystemUI implements CommandQueue.Callba
         public void handleMessage(Message msg) {
             switch(msg.what) {
                 case MSG_SHOW_DIALOG:
-                    handleShowDialog((SomeArgs) msg.obj);
+                    handleShowDialog((SomeArgs) msg.obj, false /* skipAnimation */);
                     break;
                 case MSG_BIOMETRIC_AUTHENTICATED:
                     handleBiometricAuthenticated();
@@ -178,7 +178,7 @@ public class BiometricDialogImpl extends SystemUI implements CommandQueue.Callba
         mHandler.obtainMessage(MSG_HIDE_DIALOG, false /* userCanceled */).sendToTarget();
     }
 
-    private void handleShowDialog(SomeArgs args) {
+    private void handleShowDialog(SomeArgs args, boolean skipAnimation) {
         mCurrentDialogArgs = args;
         final int type = args.argi1;
         mCurrentDialog = mDialogs.get(type);
@@ -195,6 +195,7 @@ public class BiometricDialogImpl extends SystemUI implements CommandQueue.Callba
         mReceiver = (IBiometricPromptReceiver) args.arg2;
         mCurrentDialog.setBundle((Bundle)args.arg1);
         mCurrentDialog.setRequireConfirmation((boolean)args.arg3);
+        mCurrentDialog.setSkipIntro(skipAnimation);
         mWindowManager.addView(mCurrentDialog, mCurrentDialog.getLayoutParams());
         mDialogShowing = true;
     }
@@ -278,15 +279,15 @@ public class BiometricDialogImpl extends SystemUI implements CommandQueue.Callba
 
     @Override
     protected void onConfigurationChanged(Configuration newConfig) {
+        super.onConfigurationChanged(newConfig);
+        final boolean wasShowing = mDialogShowing;
         if (mDialogShowing) {
             mCurrentDialog.forceRemove();
+            mDialogShowing = false;
         }
         createDialogs();
-        if (mDialogShowing) {
-            mCurrentDialog = mDialogs.get(mCurrentDialogArgs.argi1);
-            mCurrentDialog.forceRemove();  // Prevents intro animation when reattaching.
-            mDialogShowing = false;
-            handleShowDialog(mCurrentDialogArgs);
+        if (wasShowing) {
+            handleShowDialog(mCurrentDialogArgs, true /* skipAnimation */);
         }
     }
 }

packages/SystemUI/src/com/android/systemui/biometrics/BiometricDialogView.java

@@ -66,7 +66,7 @@ public abstract class BiometricDialogView extends LinearLayout {
     private final float mAnimationTranslationOffset;
     private final int mErrorColor;
     private final int mTextColor;
-    private final float mDisplayWidth;
+    private final float mDialogWidth;
     private final DialogViewCallback mCallback;
 
     private ViewGroup mLayout;
@@ -76,6 +76,7 @@ public abstract class BiometricDialogView extends LinearLayout {
     private int mLastState;
     private boolean mAnimatingAway;
     private boolean mWasForceRemoved;
+    private boolean mSkipIntro;
     protected boolean mRequireConfirmation;
 
     protected abstract void updateIcon(int lastState, int newState);
@@ -131,7 +132,7 @@ public abstract class BiometricDialogView extends LinearLayout {
 
         DisplayMetrics metrics = new DisplayMetrics();
         mWindowManager.getDefaultDisplay().getMetrics(metrics);
-        mDisplayWidth = metrics.widthPixels;
+        mDialogWidth = Math.min(metrics.widthPixels, metrics.heightPixels);
 
         // Create the dialog
         LayoutInflater factory = LayoutInflater.from(getContext());
@@ -198,8 +199,7 @@ public abstract class BiometricDialogView extends LinearLayout {
         final Button negative = mLayout.findViewById(R.id.button2);
         final Button positive = mLayout.findViewById(R.id.button1);
 
-        mDialog.getLayoutParams().width = (int) mDisplayWidth;
-
+        mDialog.getLayoutParams().width = (int) mDialogWidth;
         mLastState = STATE_NONE;
         updateState(STATE_AUTHENTICATING);
 
@@ -228,20 +228,21 @@ public abstract class BiometricDialogView extends LinearLayout {
 
         negative.setText(mBundle.getCharSequence(BiometricPrompt.KEY_NEGATIVE_TEXT));
 
-        if (!mWasForceRemoved) {
-            // Dim the background and slide the dialog up
-            mDialog.setTranslationY(mAnimationTranslationOffset);
-            mLayout.setAlpha(0f);
-            postOnAnimation(mShowAnimationRunnable);
-        } else {
+        if (mWasForceRemoved || mSkipIntro) {
             // Show the dialog immediately
             mLayout.animate().cancel();
             mDialog.animate().cancel();
             mDialog.setAlpha(1.0f);
             mDialog.setTranslationY(0);
             mLayout.setAlpha(1.0f);
+        } else {
+            // Dim the background and slide the dialog up
+            mDialog.setTranslationY(mAnimationTranslationOffset);
+            mLayout.setAlpha(0f);
+            postOnAnimation(mShowAnimationRunnable);
         }
         mWasForceRemoved = false;
+        mSkipIntro = false;
     }
 
     private void setDismissesDialog(View v) {
@@ -296,6 +297,13 @@ public abstract class BiometricDialogView extends LinearLayout {
         mWasForceRemoved = true;
     }
 
+    /**
+     * Skip the intro animation
+     */
+    public void setSkipIntro(boolean skip) {
+        mSkipIntro = skip;
+    }
+
     public boolean isAnimatingAway() {
         return mAnimatingAway;
     }