WAITING_LOCK 中的三星 CameraCaptureSession - 需要解决方法

Question

更新：请将此标记为重复Front Camera in Camera2 not capturing image三星 S7 前置摄像头不支持自动对焦，并且 lockfocus() 不会返回任何内容。

它适用于具有 API24 的其他设备，不适用于 GalaxyS7。

private CaptureRequest.Builder mPreviewRequestBuilder;
/**
 * Initiate a still image capture.
 */
private void takePicture() {
    Log.e("timer", "entered takepicture()");
    lockFocus();
    Log.e("timer", "exited lockfocus()");
}

/**
 * Lock the focus as the first step for a still image capture.
 */
private void lockFocus() {
    try {
        // This is how to tell the camera to lock focus.
        Log.e("timer", "entered lockfocus()");
        mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AF_TRIGGER,
                CameraMetadata.CONTROL_AF_TRIGGER_START);
        // Tell #mCaptureCallback to wait for the lock.
        mState = STATE_WAITING_LOCK;
        mCaptureSession.capture(mPreviewRequestBuilder.build(), mCaptureCallback,
                mBackgroundHandler);
    } catch (CameraAccessException e) {
        e.printStackTrace();
    }
}

logcat 中没有错误/警告。

02-10 17:52:26.626 11402-11402/xxx E/timer: entered takepicture()
02-10 17:52:26.626 11402-11402/xxx E/timer: entered lockfocus()
02-10 17:52:26.634 11402-11402/xxx E/timer: exited lockfocus()
02-10 17:52:28.652 11402-11529/xxx V/FA: Inactivity, disconnecting from the service

如果您需要其他代码，请告诉我。

Answer 1

请将此标记为重复 Camera2 中的前置摄像头未捕获图像三星 S7 前置摄像头不支持自动对焦，并且 lockfocus() 不会返回任何内容。