Android手机拍照功能源码

001public class CameraActivity extends Activity
002 implements Callback, OnClickListener {
003
004 private static final int MENU_START = 1;
005 private static final int MENU_UP=2;
006 private static final int MENU_CANCEL=2;
007 private SurfaceView mSurfaceView;
008 private SurfaceHolder mSurfaceHolder;
009 private Camera mCamera;
010 private boolean mPreviewRunning;
011 private ImageView mImageView;
012
013 /**
014 * 拍照的回调接口
015 */
016 PictureCallback mPictureCallback = new PictureCallback() { 017
018 public void onPictureTaken(byte[] data, Camera camera) { 019 Log.d("PictureCallback", "...onPictureTaken..."); 020 if(data != null) {
021 try{
022 DataOutputStream dataOutputStream = new DataOutputStream(new FileOutputStream("/sdcard/camera.jpg"));
02 3 dataOutputStream.write(da ta);
02
4
dataOutputStream.flush(); 025 } catch(Exception e) {
026 Log.e("PictureCallback", e.toString());
027 }
028 Bitmap bitmap = BitmapFactory.decodeByteArray(data, 0,
029 data.length);
030 mImageView.setImageBitmap(bitmap);
031 mImageView.setVisibility(View.VISIBLE); 032 mSurfaceView.setVisibility(View.GONE); 033 if(mPreviewRunning) {
034 mCamera.stopPreview();
035 mPreviewRunning = false;
036 }
037
038
}
039 }
040
041 };
042 /**
043 * 例如：使设备震动
044 */
045 ShutterCallback mShutterCallback = new ShutterCallback() { 046
047 public void onShutter() {
048 //just log ,do nothing
049 Log.d("ShutterCallback", "...onShutter...");
050 }
051
052 };
053
054 /** Called when the activity is first created. */
055 @Override
056 public void onCreate(Bundle savedInstanceState) {
057 super.onCreate(savedInstanceState);
058
059 requestWindowFeature(Window.FEATURE_NO_TITLE);
060 getWindow().setFormat(PixelFormat.TRANSLUCENT);
06 1 getWindow().setFlags(youtParams.FLAG_FULLS CREEN,
062 youtParams.FLAG_FULLSCREEN);
063 setContentView(yout.camera);
064 mSurfaceView = (SurfaceView) findViewById(R.id.camera); 065 mImageView = (ImageView) findViewById(R.id.image);
066 mImageView.setVisibility(View.GONE);
067
068 mSurfaceView.setOnClickListener(this);
069 mSurfaceHolder = mSurfaceView.getHolder();
070 mSurfaceHolder.addCallback(this);
07 1 mSurfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUF FERS);
072
073 }
074
075 @Override
076 public boolean onCreateOptionsMenu(Menu menu) {
077 super.onCreateOptionsMenu(menu);
078 menu.add(0, MENU_START, 0, R.string.camera_start); 079 menu.add(1, MENU_UP, 0, R.string.camera_UP);
080 menu.add(2, MENU_CANCEL, 0, R.string.camera_cancel); 081 return true;
082 }
083
084 @Override
085 public boolean onOptionsItemSelected(MenuItem item) { 086 if(item.getItemId() == MENU_START) { //拍照
087 mImageView.setVisibility(View.GONE);
088 mSurfaceView.setVisibility(View.VISIBLE);
089 if(mPreviewRunning) {
090 mCamera.stopPreview();
091 }
092 mCamera.startPreview();
093
094 mPreviewRunning = true;
095 return true;
096 }
097 if(item.getItemId() ==MENU_UP){ //上传照片
098
099
100 }
101 if(item.getItemId() ==MENU_CANCEL){ //取消操作
102
103 CameraActivity.this.finish();
104 }
105 return super.onOptionsItemSelected(item);
106 }
107
108 public void surfaceChanged(SurfaceHolder holder, int format, int width,
109 int height) {
110 if(mPreviewRunning) {
111 mCamera.stopPreview(); 112 }
113 Parameters params = mCamera.getParameters();
114 params.setPreviewSize(120, 120); //直接规定照片大小115 mCamera.setParameters(params);
116
117 try{
118 mCamera.setPreviewDisplay(holder);
119 } catch(IOException e) {
120
e.printStackTrace();
121 }
122 mCamera.startPreview();
123 mPreviewRunning = true;
124 }
125
126 public void surfaceCreated(SurfaceHolder holder) {
127 mCamera = Camera.open();
128 }
129
130 public void surfaceDestroyed(SurfaceHolder holder) { 131 mCamera.stopPreview();
132 mPreviewRunning = false;
133 mCamera.release();
134 mCamera = null;
135 }
136
137 public void onClick(View v) {
138 mCamera.takePicture(mShutterCallback, null, mPictureCallback);
139 } 140}。