1 /*
2  * Copyright (C) 2011 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 com.android.test.hwui;
18 
19 import android.app.Activity;
20 import android.graphics.Bitmap;
21 import android.graphics.SurfaceTexture;
22 import android.hardware.Camera;
23 import android.os.Bundle;
24 import android.os.Environment;
25 import android.view.Gravity;
26 import android.view.TextureView;
27 import android.view.View;
28 import android.widget.Button;
29 import android.widget.FrameLayout;
30 
31 import java.io.FileNotFoundException;
32 import java.io.FileOutputStream;
33 import java.io.IOException;
34 
35 @SuppressWarnings({"UnusedDeclaration"})
36 public class GetBitmapActivity extends Activity implements TextureView.SurfaceTextureListener {
37     private Camera mCamera;
38     private TextureView mTextureView;
39 
40     @Override
onCreate(Bundle savedInstanceState)41     protected void onCreate(Bundle savedInstanceState) {
42         super.onCreate(savedInstanceState);
43 
44         FrameLayout content = new FrameLayout(this);
45 
46         mTextureView = new TextureView(this);
47         mTextureView.setSurfaceTextureListener(this);
48 
49         Button button = new Button(this);
50         button.setText("Copy bitmap to /sdcard/textureview.png");
51         button.setOnClickListener(new View.OnClickListener() {
52             @Override
53             public void onClick(View v) {
54                 Bitmap b = mTextureView.getBitmap();
55                 try {
56                     FileOutputStream out = new FileOutputStream(
57                             Environment.getExternalStorageDirectory() + "/textureview.png");
58                     try {
59                         b.compress(Bitmap.CompressFormat.PNG, 100, out);
60                     } finally {
61                         try {
62                             out.close();
63                         } catch (IOException e) {
64                             // Ignore
65                         }
66                     }
67                 } catch (FileNotFoundException e) {
68                     // Ignore
69                 }
70             }
71         });
72 
73         content.addView(mTextureView, new FrameLayout.LayoutParams(500, 400, Gravity.CENTER));
74         content.addView(button, new FrameLayout.LayoutParams(
75                 FrameLayout.LayoutParams.WRAP_CONTENT, FrameLayout.LayoutParams.WRAP_CONTENT,
76                 Gravity.CENTER_HORIZONTAL | Gravity.BOTTOM));
77         setContentView(content);
78     }
79 
80     @Override
onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height)81     public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) {
82         mCamera = Camera.open();
83 
84         try {
85             mCamera.setPreviewTexture(surface);
86         } catch (IOException t) {
87             android.util.Log.e("TextureView", "Cannot set preview texture target!", t);
88         }
89 
90         mCamera.startPreview();
91     }
92 
93     @Override
onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height)94     public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {
95         // Ignored, the Camera does all the work for us
96     }
97 
98     @Override
onSurfaceTextureDestroyed(SurfaceTexture surface)99     public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {
100         mCamera.stopPreview();
101         mCamera.release();
102         return true;
103     }
104 
105     @Override
onSurfaceTextureUpdated(SurfaceTexture surface)106     public void onSurfaceTextureUpdated(SurfaceTexture surface) {
107         // Ignored
108     }
109 }
110