1 /*
2  * Copyright (C) 2014 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package androidx.test.uiautomator.testapp;
18 
19 import android.app.Activity;
20 import android.os.Bundle;
21 import android.view.MotionEvent;
22 import android.view.ScaleGestureDetector;
23 import android.view.ScaleGestureDetector.SimpleOnScaleGestureListener;
24 import android.widget.TextView;
25 
26 import org.jspecify.annotations.Nullable;
27 
28 public class PinchTestActivity extends Activity {
29 
30     private ScaleGestureDetector mScaleDetector;
31 
32     @Override
onCreate(@ullable Bundle savedInstanceState)33     public void onCreate(@Nullable Bundle savedInstanceState) {
34         super.onCreate(savedInstanceState);
35 
36         setContentView(R.layout.pinch_test_activity);
37 
38         final TextView scaleFactor = findViewById(R.id.scale_factor);
39 
40         mScaleDetector = new ScaleGestureDetector(this, new SimpleOnScaleGestureListener() {
41             @Override
42             public void onScaleEnd(ScaleGestureDetector detector) {
43                 float scale = detector.getScaleFactor();
44                 scaleFactor.setText(Float.toString(scale));
45             }
46         });
47     }
48 
49     @Override
onTouchEvent(MotionEvent event)50     public boolean onTouchEvent(MotionEvent event) {
51         return mScaleDetector.onTouchEvent(event);
52     }
53 }
54