java代码：
[java] view plain copy
  1. packagecom.Aina.Android;
  3. importjava.io.BufferedOutputStream;
  4. importjava.io.File;
  5. importjava.io.FileNotFoundException;
  6. importjava.io.FileOutputStream;
  7. importjava.io.IOException;
  9. importandroid.content.Context;
  10. importandroid.graphics.Bitmap;
  11. importandroid.graphics.BitmapFactory;
  12. importandroid.graphics.Canvas;
  13. importandroid.graphics.PixelFormat;
  14. importandroid.hardware.Camera;
  15. importandroid.util.Log;
  16. importandroid.view.KeyEvent;
  17. importandroid.view.SurfaceHolder;
  18. importandroid.view.SurfaceView;
  20. /**
  21. *com.Aina.AndroidPro_Camera
  22. *
  23. *@authorAina.huangE-mail:674023920@qq.com
  24. *@version创建时间：2010Jul7,20102:50:15PM类说明
  25. */
  26. publicclassPreViewextendsSurfaceViewimplementsSurfaceHolder.Callback{
  28. privateSurfaceHolderholder=null;
  29. privateCameramCamera=null;
  30. privateBitmapmBitmap=null;
  32. publicPreView(Contextcontext){
  33. super(context);
  34. Log.i("TAG","PreView()");
  35. //TODOAuto-generatedconstructorstub
  36. holder=this.getHolder();
  37. holder.addCallback(this);
  38. holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
  39. }
  41. publicvoidsurfaceChanged(SurfaceHolderholder,intformat,intwidth,
  42. intheight){
  43. Log.i("TAG","surfaceChanged");
  44. //TODOAuto-generatedmethodstub
  45. Camera.Parametersparameters=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. }
  53. publicvoidsurfaceCreated(SurfaceHolderholder){
  54. Log.i("TAG","surfaceCreated");
  55. //TODOAuto-generatedmethodstub
  56. mCamera=Camera.open();//启动服务
  57. try{
  58. mCamera.setPreviewDisplay(holder);//设置预览
  59. }catch(IOExceptione){
  60. mCamera.release();//释放
  61. mCamera=null;
  62. }
  63. }
  65. publicvoidsurfaceDestroyed(SurfaceHolderholder){
  66. Log.i("TAG","surfaceDestroyed");
  67. //TODOAuto-generatedmethodstub
  68. mCamera.stopPreview();//停止预览
  69. mCamera=null;
  70. }
  72. publicbooleanonKeyDown(intkeyCode,KeyEventevent){
  73. if(keyCode==KeyEvent.KEYCODE_DPAD_CENTER){
  74. if(mCamera!=null){
  75. mCamera.takePicture(null,null,pic);
  76. }
  77. }
  78. returnsuper.onKeyDown(keyCode,event);
  79. }
  80. //拍照后输出图片
  81. publicCamera.PictureCallbackpic=newCamera.PictureCallback(){
  83. publicvoidonPictureTaken(byte[]data,Cameracamera){
  84. //TODOAuto-generatedmethodstub
  85. mBitmap=BitmapFactory.decodeByteArray(data,0,data.length);
  86. Filef=newFile(android.os.Environment.getExternalStorageDirectory()+"/camera1.jpg");
  87. try{
  88. BufferedOutputStreamos=newBufferedOutputStream(newFileOutputStream(f));
  89. mBitmap.compress(Bitmap.CompressFormat.JPEG,80,os);
  90. os.flush();
  91. os.close();
  92. Canvascanvas=holder.lockCanvas();
  93. canvas.drawBitmap(mBitmap,0,0,null);
  94. holder.unlockCanvasAndPost(canvas);
  95. }catch(FileNotFoundExceptione){
  96. //TODOAuto-generatedcatchblock
  97. e.printStackTrace();
  98. }catch(IOExceptione){
  99. //TODOAuto-generatedcatchblock
  100. e.printStackTrace();
  101. }
  102. }
  104. };
  105. }


[java] view plain copy
  1. packagecom.Aina.Android;
  3. importandroid.app.Activity;
  4. importandroid.os.Bundle;
  5. importandroid.view.KeyEvent;
  6. importandroid.view.Window;
  8. publicclassTestextendsActivity{
  9. /**Calledwhentheactivityisfirstcreated.*/
  10. privatePreViewpv=null;
  11. @Override
  12. publicvoidonCreate(BundlesavedInstanceState){
  13. super.onCreate(savedInstanceState);
  14. this.requestWindowFeature(Window.FEATURE_NO_TITLE);
  15. pv=newPreView(this);
  16. setContentView(pv);
  17. }
  19. @Override
  20. publicbooleanonKeyDown(intkeyCode,KeyEventevent){
  21. //TODOAuto-generatedmethodstub
  22. returnpv.onKeyDown(keyCode,event);
  23. }
  25. }


[java] view plain copy
  1. <?xmlversion="1.0"encoding="utf-8"?>
  2. <manifestxmlns:android="http://schemas.android.com/apk/res/android"
  3. package="com.Aina.Android"
  4. android:versionCode="1"
  5. android:versionName="1.0">
  6. <applicationandroid:icon="@drawable/icon"android:label="@string/app_name">
  7. <activityandroid:name=".Test"
  8. android:label="@string/app_name">
  9. <intent-filter>
  10. <actionandroid:name="android.intent.action.MAIN"/>
  11. <categoryandroid:name="android.intent.category.LAUNCHER"/>
  12. </intent-filter>
  13. </activity>
  15. </application>
  16. <uses-permissionandroid:name="android.permission.CAMERA"/>
  17. <uses-featureandroid:name="android.hardware.camera"/>
  18. <uses-featureandroid:name="android.hardware.camera.autofocus"/>
  20. </manifest>


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

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