Request hiding IME before starting dismiss biometric UI animation

As recents animation will invoke hideSoftInputFromWindow when the
Biometric UI lost focus during quick-switch.

Since IME hiding animation will be scheduled on the focus app's UI
thread, so if Biometric UI has running the animation on UI thread, the
IME hiding animation will be delayed until the animation finish.

Make sure calling WindowInsetsController#hide(ime()) before starting
dismiss biometric UI to fix this issue.

Fix: 247705580
Test: manual by issue steps:
   1. Unlock the device
   2. Go to Settings -> Network and internet -> Hotspot and tethering
        -> WIFI hotspot
   3. Enable use Wi-Fi hotspot
   4. Tap on Biometric to show keyboard
   5. From password screen go to home screen
   6. Expect keyboard will be hidden without being delayed
Test: atest AuthContainerViewTest#\
        testDismissesOnFocusLoss_hidesKeyboardWhenVisible
Merged-In: I541f41832753ea1f4f48f6c4745649606b37d207
Change-Id: I541f41832753ea1f4f48f6c4745649606b37d207

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

@@ -775,6 +775,12 @@ public class AuthContainerView extends LinearLayout
         }
         mContainerState = STATE_ANIMATING_OUT;
 
+        // Request hiding soft-keyboard before animating away credential UI, in case IME insets
+        // animation get delayed by dismissing animation.
+        if (isAttachedToWindow() && getRootWindowInsets().isVisible(WindowInsets.Type.ime())) {
+            getWindowInsetsController().hide(WindowInsets.Type.ime());
+        }
+
         if (sendReason) {
             mPendingCallbackReason = reason;
         } else {

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

@@ -35,6 +35,8 @@ import android.view.WindowInsets
 import android.view.WindowManager
 import android.widget.ScrollView
 import androidx.test.filters.SmallTest
+import com.android.dx.mockito.inline.extended.ExtendedMockito.doReturn
+import com.android.dx.mockito.inline.extended.ExtendedMockito.spyOn
 import com.android.internal.jank.InteractionJankMonitor
 import com.android.internal.widget.LockPatternUtils
 import com.android.systemui.R
@@ -142,6 +144,35 @@ class AuthContainerViewTest : SysuiTestCase() {
         assertThat(container.parent).isNull()
     }
 
+    @Test
+    fun testDismissesOnFocusLoss_hidesKeyboardWhenVisible() {
+        val container = initializeFingerprintContainer(
+            authenticators = BiometricManager.Authenticators.DEVICE_CREDENTIAL
+        )
+        waitForIdleSync()
+
+        val requestID = authContainer?.requestId ?: 0L
+
+        // Simulate keyboard was shown on the credential view
+        val windowInsetsController = container.windowInsetsController
+        spyOn(windowInsetsController)
+        spyOn(container.rootWindowInsets)
+        doReturn(true).`when`(container.rootWindowInsets).isVisible(WindowInsets.Type.ime())
+
+        container.onWindowFocusChanged(false)
+        waitForIdleSync()
+
+        // Expect hiding IME request will be invoked when dismissing the view
+        verify(windowInsetsController)?.hide(WindowInsets.Type.ime())
+
+        verify(callback).onDismissed(
+            eq(AuthDialogCallback.DISMISSED_USER_CANCELED),
+            eq<ByteArray?>(null), /* credentialAttestation */
+            eq(requestID)
+        )
+        assertThat(container.parent).isNull()
+    }
+
     @Test
     fun testActionAuthenticated_sendsDismissedAuthenticated() {
         val container = initializeFingerprintContainer()