Camera.takePicture() 没有回调

Question

已解决，查看评论 --- 我从来没有收到来自 Camera.takePicture() 的回调，我在 logcat 中看到了这一点。 什么不见​​了？如何让 takePicture()... 拍照？！ 其中大部分是直接来自 Android 开发者相机指南。我想以编程方式拍照，无需任何预览或用户操作。使用内置的相机应用程序可以正常工作。 SDK 16.

在清单中我确实添加了：

<uses-permission android:name="android.permission.CAMERA" />
<uses-feature android:name="android.hardware.camera"
android:required="true" />

代码：

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Button bTake =  (Button)findViewById(R.id.b_take);
    boolean boo = safeCameraOpen(camId);
    Camera.Parameters parameters = mCamera.getParameters();
    mCamera.setParameters(parameters);
    bTake.setOnClickListener(new View.OnClickListener() {
         public void onClick(View v) {

             mCamera.takePicture(shutter, null, null, picture);

             Log.e(getString(R.string.app_name), "After takePicture");               
         }
     });

}// END onCreate 


/* Camera operations */

private ShutterCallback shutter = new ShutterCallback() {
    @Override
    public void onShutter() {
        Log.e(getString(R.string.app_name), "onShutter");
    }
};

private PictureCallback picture = new PictureCallback() {
    @Override
    public void onPictureTaken(byte[] arg0, Camera arg1) {
        Log.e(getString(R.string.app_name), "onPicTaken");
    }
};


/* Starting up and closing down*/

private boolean safeCameraOpen(int id) {
    boolean qOpened = false;
    try {
        releaseCamera();
        mCamera = Camera.open(id);
        qOpened = (mCamera != null);
    } catch (Exception e) {
        Log.e(getString(R.string.app_name), "failed to open Camera");
        e.printStackTrace();
    }
    return qOpened;    
}

private void releaseCamera() {
    if (mCamera != null) {
        ((Camera) mCamera).release();
        mCamera = null;
        Log.e(getString(R.string.app_name), "cam released");
    }
}}

Answer 1

试试：

mCamera.takePicture(shutter, picture, picture);