在开发android 应用的时候我们经常需要用到摄像头来进行拍照或者是录制视频，这里介绍一种最简单的方法：调用系统摄像头来拍照，并将照片保存起来
启动摄像头的方法： 

startActivityForResult(new Intent("android.media.action.IMAGE_CAPTURE"), TAKE_PICTURE);



拍摄成功后接收参数的接收方法我们只需要重写


protected void onActivityResult(int requestCode, int resultCode, Intent data)方法即可

如：

final int TAKE_PICTURE = 1;
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
  if (requestCode == TAKE_PICTURE) {
    if (resultCode == RESULT_OK) {
      Bitmap bm = (Bitmap) data.getExtras().get("data");
      imgPhoto.setImageBitmap(bm);
      sdCardExit = Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED);

      if (sdCardExit) {
        myRecAudioDir = new File(Environment.getExternalStorageDirectory().getAbsolutePath()+ "/custom_picture");

        if (!myRecAudioDir.exists()) {
          myRecAudioDir.mkdir();
        }
      } else {
        mMakeTextToast("", true);
      }

      try {
        File f = File.createTempFile(strTempFile, ".jpg",myRecAudioDir);
        BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(f));

        photoPath=f.getPath();

        bm.compress(Bitmap.CompressFormat.JPEG, 80, bos);

        bos.flush();
        bos.close();

      } catch (FileNotFoundException e) {                                        
        e.printStackTrace();
      } catch (IOException e) {                                        
        e.printStackTrace();
      }
    }
  }
}