Question

我正试图用Google Glass App拍照。因此我使用SurfaceView在后台显示相机预览。这张照片是故意拍摄的。问题是永远不会调用属于intent的onActivityResult方法。我已经读过这个问题是Google Glass上的一个错误，但应该使用较新版本的Google Glass来关闭。

onCreate方法：

private CameraSurfaceView cameraView;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // Initiate CameraView
    cameraView = new CameraSurfaceView(this);

    // Set the view
    this.setContentView(cameraView);

}

意图召唤：

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
        case R.id.action_camera:
            take picture

            Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
            if (intent != null)
            {

                Toast.makeText(getApplicationContext(), "Taking Picture",
                        Toast.LENGTH_SHORT).show();
                startActivityForResult(intent, TAKE_PICTURE_REQUEST);
            }

            return true;

        default:
            return super.onOptionsItemSelected(item);
    }
}

一切正常。用户看到相机预览，并且当调用意图时，将拍摄并存储图片。之后，用户会看到提示“点击接受”。点击应用程序结束后，永远不会调用onActivityResult方法。

onActivityResult方法。

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
    Log.i("Camera", "Hello from onActivityResult");
    // Handle photos
    if (requestCode == TAKE_PICTURE_REQUEST && resultCode == RESULT_OK)
    {


        String picturePath = data.getStringExtra(Intents.EXTRA_PICTURE_FILE_PATH);

        processPictureWhenReady(picturePath);
    }


    super.onActivityResult(requestCode, resultCode, data);

}

释放相机：

@Override
protected void onResume() {
    super.onResume();

    // Do not hold the camera during onResume
    if (cameraView != null) {
        cameraView.releaseCamera();
    }
}

@Override
protected void onPause() {
    super.onPause();

    // Do not hold the camera during onPause
    if (cameraView != null) {
        cameraView.releaseCamera();
    }
}

Logcat记录日志级别为“Info”的应用程序

 05-03 08:45:02.328  29785-29785/com.dhbw.charadect I/dalvikvm-heap﹕ Grow heap (frag case) to 5.955MB for 921616-byte allocation
 05-03 08:45:03.305  29785-29785/com.dhbw.charadect I/Choreographer﹕ Skipped 51 frames!  The application may be doing too much work on its main thread.
 05-03 08:45:03.313  29785-29785/com.dhbw.charadect W/Resources﹕ Converting to boolean: TypedValue{t=0x3/d=0x210 "res/anim/decelerate_interpolator.xml" a=1 r=0x10a0006}
 05-03 08:45:04.008  29785-29785/com.dhbw.charadect I/Choreographer﹕ Skipped 30 frames!  The application may be doing too much work on its main thread.
 05-03 08:45:14.414  29785-29797/com.dhbw.charadect I/Camera﹕ Received CAMERA_MSG_RELEASE

提前感谢所有答案和评论！

谷歌眼镜拍照意图

0 个答案: