Dismiss BiometricPrompt if window focus is lost

Bug: 233820283
Bug: 216743197
Test: atest AuthContainerViewTest
Change-Id: I73a87a364a752154e0f96c018b5e5ee8eb505c03

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

@@ -435,6 +435,15 @@ public class AuthContainerView extends LinearLayout
         maybeUpdatePositionForUdfps(true /* invalidate */);
     }
 
+    @Override
+    public void onWindowFocusChanged(boolean hasWindowFocus) {
+        super.onWindowFocusChanged(hasWindowFocus);
+        if (!hasWindowFocus) {
+            Log.v(TAG, "Lost window focus, dismissing the dialog");
+            animateAway(AuthDialogCallback.DISMISSED_USER_CANCELED);
+        }
+    }
+
     @Override
     public void onAttachedToWindow() {
         super.onAttachedToWindow();
@@ -795,7 +804,7 @@ public class AuthContainerView extends LinearLayout
         final WindowManager.LayoutParams lp = new WindowManager.LayoutParams(
                 ViewGroup.LayoutParams.MATCH_PARENT,
                 ViewGroup.LayoutParams.MATCH_PARENT,
-                WindowManager.LayoutParams.TYPE_STATUS_BAR_SUB_PANEL,
+                WindowManager.LayoutParams.TYPE_STATUS_BAR_ADDITIONAL,
                 windowFlags,
                 PixelFormat.TRANSLUCENT);
         lp.privateFlags |= WindowManager.LayoutParams.SYSTEM_FLAG_SHOW_FOR_ALL_USERS;

packages/SystemUI/tests/src/com/android/systemui/biometrics/AuthContainerViewTest.kt

@@ -105,6 +105,23 @@ class AuthContainerViewTest : SysuiTestCase() {
         verify(callback).onDialogAnimatedIn()
     }
 
+    @Test
+    fun testDismissesOnFocusLoss() {
+        val container = initializeFingerprintContainer()
+        waitForIdleSync()
+
+        verify(callback).onDialogAnimatedIn()
+
+        container.onWindowFocusChanged(false)
+        waitForIdleSync()
+
+        verify(callback).onDismissed(
+            eq(AuthDialogCallback.DISMISSED_USER_CANCELED),
+            eq<ByteArray?>(null) /* credentialAttestation */
+        )
+        assertThat(container.parent).isNull()
+    }
+
     @Test
     fun testActionAuthenticated_sendsDismissedAuthenticated() {
         val container = initializeFingerprintContainer()