| /* |
| * Copyright 2020 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package androidx.camera.previewview.utils; |
| |
| import android.app.Activity; |
| import android.os.Bundle; |
| |
| import androidx.annotation.NonNull; |
| import androidx.annotation.Nullable; |
| import androidx.annotation.RequiresApi; |
| import androidx.test.espresso.idling.CountingIdlingResource; |
| |
| /** An empty activity that checks the activity's <em>main</em> window currently has window focus. */ |
| @RequiresApi(21) // TODO(b/200306659): Remove and replace with annotation on package-info.java |
| public class ForegroundTestActivity extends Activity { |
| |
| final CountingIdlingResource mViewReady = new CountingIdlingResource("ViewReady"); |
| |
| @NonNull |
| public CountingIdlingResource getViewReadyIdlingResource() { |
| return mViewReady; |
| } |
| |
| @Override |
| protected void onCreate(@Nullable Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| mViewReady.increment(); |
| } |
| |
| @Override |
| public void onWindowFocusChanged(boolean hasFocus) { |
| super.onWindowFocusChanged(hasFocus); |
| if (hasFocus && !mViewReady.isIdleNow()) { |
| mViewReady.decrement(); |
| } |
| } |
| } |
