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
