Android 开发随手笔记之使用摄像头拍照

} @Override

public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { }

@Override public void surfaceDestroyed(SurfaceHolder holder) {

stopCamera(); }

}; surfaceView.getHolder().addCallback(callback);

button.setOnClickListener(new View.OnClickListener() { @Override

public void onClick(View v) { camera.takePicture(null, null, new Camera.PictureCallback() {

@Override public void onPictureTaken(byte[] data, Camera camera) {

try { File filePath = new File(Environment.getExternalStorageDirectory(), "myCamera");

if(!filePath.exists()) { filePath.mkdirs();

} File fileName = new File(filePath, System.currentTimeMillis() + ".jpg");

fileName.createNewFile(); FileOutputStream fos = new FileOutputStream(fileName);

fos.write(data); fos.flush();

fos.close(); } catch (IOException e) {

e.printStackTrace(); }

} });

} public void startCamera(){

camera = Camera.open(); try {

camera.setPreviewDisplay(surfaceView.getHolder()); camera.setDisplayOrientation(90);

camera.startPreview(); } catch (IOException e) {

e.printStackTrace(); }

} public void stopCamera(){

camera.stopPreview(); camera.release();

camera = null; }

}