MediaRecorder.stop() 在三星Galaxy相机上卡住了

Question

在三星Galaxy相机上调用stop()会无限期地挂起。将此调用放在单独的线程中也无法解决问题。

Logcat没有显示任何错误消息。然而，在三星Galaxy Nexus上运行此应用程序不会出现任何问题。

这是我调用stop的代码：

View.OnClickListener captureListener = new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        if (isRecording) {
            // stop recording and release camera
            mMediaRecorder.stop();
            releaseMediaRecorder(); // release the MediaRecorder object
            mCamera.lock();         // take camera access back from MediaRecorder
            // inform the user that recording has stopped
            captureButton.setText("Capture");
            isRecording = false;
        } else {
            // initialize video camera
            if (prepareVideoRecorder()) {
                // Camera is available and unlocked, MediaRecorder is prepared,
                // now you can start recording
                mMediaRecorder.start();
                // inform the user that recording has started
                captureButton.setText("Stop");
                isRecording = true;
            } else {
                // prepare didn't work, release the camera
                releaseMediaRecorder();
                // inform user
            }
        }
    }
};

- lwander

Answer 1

我看到的一件事是，对于某些设备，如果没有预览附加（即在调用Camera.stopPreview()之前或者可能从未调用startPreview()），MediaRecorder.stop()会挂起。

- Roi Addi