Android Camera照相机

java代码：

[java] view plaincopy

1. package com.Aina.Android;  
2.   
3. import java.io.BufferedOutputStream;  
4. import java.io.File;  
5. import java.io.FileNotFoundException;  
6. import java.io.FileOutputStream;  
7. import java.io.IOException;  
8.   
9. import android.content.Context;  
10. import android.graphics.Bitmap;  
11. import android.graphics.BitmapFactory;  
12. import android.graphics.Canvas;  
13. import android.graphics.PixelFormat;  
14. import android.hardware.Camera;  
15. import android.util.Log;  
16. import android.view.KeyEvent;  
17. import android.view.SurfaceHolder;  
18. import android.view.SurfaceView;  
19.   
20. /** 
21.  * com.Aina.Android Pro_Camera 
22.  *  
23.  * @author Aina.huang E-mail: [e-mail] 
24.  * @version 创建时间：2010 Jul 7, 2010 2:50:15 PM 类说明 
25.  */  
26. public class PreView extends SurfaceView implements SurfaceHolder.Callback {  
27.   
28.     private SurfaceHolder holder = null;  
29.     private Camera mCamera = null;  
30.     private Bitmap mBitmap = null;  
31.   
32.     public PreView(Context context) {  
33.         super(context);  
34.         Log.i("TAG", "PreView()");  
35.         // TODO Auto-generated constructor stub  
36.         holder = this.getHolder();  
37.         holder.addCallback(this);  
38.         holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);  
39.     }  
40.   
41.     public void surfaceChanged(SurfaceHolder holder, int format, int width,  
42.             int height) {  
43.         Log.i("TAG", "surfaceChanged");  
44.         // TODO Auto-generated method stub  
45.         Camera.Parameters parameters = mCamera.getParameters();  
46.         parameters.setPictureFormat(PixelFormat.JPEG);//设置图片格式  
47.         parameters.setPreviewSize(320, 480);//设置尺寸  
48. //      parameters.setPictureSize(320, 480);//设置分辨率  
49.         mCamera.setParameters(parameters);  
50.         mCamera.startPreview();//开始预览  
51.     }  
52.   
53.     public void surfaceCreated(SurfaceHolder holder) {  
54.         Log.i("TAG", "surfaceCreated");  
55.         // TODO Auto-generated method stub  
56.         mCamera = Camera.open();//启动服务  
57.         try {  
58.             mCamera.setPreviewDisplay(holder);//设置预览  
59.         } catch (IOException e) {  
60.             mCamera.release();//释放  
61.             mCamera = null;  
62.         }  
63.     }  
64.   
65.     public void surfaceDestroyed(SurfaceHolder holder) {  
66.         Log.i("TAG", "surfaceDestroyed");  
67.         // TODO Auto-generated method stub  
68.         mCamera.stopPreview();//停止预览  
69.         mCamera = null;  
70.     }  
71.   
72.     public boolean onKeyDown(int keyCode, KeyEvent event) {  
73.         if(keyCode==KeyEvent.KEYCODE_DPAD_CENTER){  
74.             if(mCamera !=null){  
75.                 mCamera.takePicture(null, null,pic);  
76.             }  
77.         }  
78.         return super.onKeyDown(keyCode, event);  
79.     }  
80.     //拍照后输出图片  
81.     public Camera.PictureCallback pic = new Camera.PictureCallback(){  
82.   
83.         public void onPictureTaken(byte[] data, Camera camera) {  
84.             // TODO Auto-generated method stub  
85.             mBitmap = BitmapFactory.decodeByteArray(data, 0, data.length);  
86.             File f = new File(android.os.Environment.getExternalStorageDirectory()+"/camera1.jpg");  
87.             try {  
88.                 BufferedOutputStream os = new BufferedOutputStream(new FileOutputStream(f));  
89.                 mBitmap.compress(Bitmap.CompressFormat.JPEG, 80, os);  
90.                 os.flush();  
91.                 os.close();  
92.                 Canvas canvas = holder.lockCanvas();  
93.                 canvas.drawBitmap(mBitmap, 0, 0, null);  
94.                 holder.unlockCanvasAndPost(canvas);  
95.             } catch (FileNotFoundException e) {  
96.                 // TODO Auto-generated catch block  
97.                 e.printStackTrace();  
98.             } catch (IOException e) {  
99.                 // TODO Auto-generated catch block  
100.                 e.printStackTrace();  
101.             }  
102.         }  
103.           
104.     };  
105. }  

[java] view plaincopy

1. package com.Aina.Android;  
2.   
3. import android.app.Activity;  
4. import android.os.Bundle;  
5. import android.view.KeyEvent;  
6. import android.view.Window;  
7.   
8. public class Test extends Activity {  
9.     /** Called when the activity is first created. */  
10.     private PreView pv = null;  
11.     @Override  
12.     public void onCreate(Bundle savedInstanceState) {  
13.         super.onCreate(savedInstanceState);  
14.         this.requestWindowFeature(Window.FEATURE_NO_TITLE);  
15.         pv = new PreView(this);  
16.         setContentView(pv);  
17.     }  
18.   
19.     @Override  
20.     public boolean onKeyDown(int keyCode, KeyEvent event) {  
21.         // TODO Auto-generated method stub  
22.         return pv.onKeyDown(keyCode, event);  
23.     }  
24.       
25. }  

[java] view plaincopy

1. <?xml version="1.0" encoding="utf-8"?>  
2. <manifest xmlns:android="http://schemas.android.com/apk/res/android"  
3.       package="com.Aina.Android"  
4.       android:versionCode="1"  
5.       android:versionName="1.0">  
6.     <application android:icon="@drawable/icon" android:label="@string/app_name">  
7.         <activity android:name=".Test"  
8.                   android:label="@string/app_name">  
9.             <intent-filter>  
10.                 <action android:name="android.intent.action.MAIN" />  
11.                 <category android:name="android.intent.category.LAUNCHER" />  
12.             </intent-filter>  
13.         </activity>  
14.   
15.     </application>  
16.  <uses-permission android:name="android.permission.CAMERA" />   
17.  <uses-feature android:name="android.hardware.camera" />   
18.  <uses-feature android:name="android.hardware.camera.autofocus" />  
19.   
20. </manifest>  

转自：http://blog.csdn.net/tzqncwu/article/details/6682820