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      1 /*
      2  * Copyright (C) 2017 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
      5  * except in compliance with the License. You may obtain a copy of the License at
      6  *
      7  *      http://www.apache.org/licenses/LICENSE-2.0
      8  *
      9  * Unless required by applicable law or agreed to in writing, software distributed under the
     10  * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
     11  * KIND, either express or implied. See the License for the specific language governing
     12  * permissions and limitations under the License.
     13  */
     14 
     15 package android.testing;
     16 
     17 import android.content.pm.ApplicationInfo;
     18 import android.graphics.PixelFormat;
     19 import android.support.test.InstrumentationRegistry;
     20 import android.view.View;
     21 import android.view.WindowManager;
     22 import android.view.WindowManager.LayoutParams;
     23 
     24 public class ViewUtils {
     25 
     26     public static void attachView(View view) {
     27         // Make sure hardware acceleration isn't turned on.
     28         view.getContext().getApplicationInfo().flags &=
     29                 ~(ApplicationInfo.FLAG_HARDWARE_ACCELERATED);
     30         WindowManager.LayoutParams lp = new WindowManager.LayoutParams(
     31                 LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT,
     32                 LayoutParams.TYPE_APPLICATION_OVERLAY,
     33                 0, PixelFormat.TRANSLUCENT);
     34         view.getContext().getSystemService(WindowManager.class).addView(view, lp);
     35     }
     36 
     37     public static void detachView(View view) {
     38         view.getContext().getSystemService(WindowManager.class).removeViewImmediate(view);
     39     }
     40 }
     41