警告：相机失败

Question

我使用下面的代码来调用已有的相机：

// New intent to Camera feature
Intent intent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
Uri fileUri = Uri.fromFile((new File((new Date()).toString())));  // create a file to save the video

intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);  // set the image file name
intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1); // set the video image quality to high

// start the Video Capture Intent
startActivityForResult(intent, CAPTURE_VIDEO_ACTIVITY_REQUEST_CODE);

我可以拍照，但不能录视频，我收到了错误Warning : Camera failed

我尝试做一些与some solutions 相关的事情，但收不到好结果。 （虽然重置了手机）

请告诉我如何解决这个问题，

谢谢，

P/s : 设备 - 三星 Galaxy Tab 7 2.2.1

编辑： 我使用以下代码接收响应，并响应结果resultCode == RESULT_CANCELED

if (resultCode == RESULT_OK) {
    // Video captured and saved to fileUri specified in the Intent
    Toast.makeText(this, "Video saved to:\n" +
                    data.getData(), Toast.LENGTH_SHORT).show();
} else if (resultCode == RESULT_CANCELED) {
    // User cancelled the video capture
    Toast.makeText(this, "User cancelled the video capture", Toast.LENGTH_SHORT).show();
} else {
    // Video capture failed, advise user
    Toast.makeText(this, "Warning : Camera failed", Toast.LENGTH_SHORT).show();
}

Answer 1

我将您的代码与Android Guide 进行了比较。唯一的区别是文件 uri。你可以试试谷歌的示例代码来获取文件uri：

public static final int MEDIA_TYPE_IMAGE = 1;
public static final int MEDIA_TYPE_VIDEO = 2;

/** Create a file Uri for saving an image or video */
private static Uri getOutputMediaFileUri(int type){
      return Uri.fromFile(getOutputMediaFile(type));
}

/** Create a File for saving an image or video */
private static File getOutputMediaFile(int type){
    // To be safe, you should check that the SDCard is mounted
    // using Environment.getExternalStorageState() before doing this.

    File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(
              Environment.DIRECTORY_PICTURES), "MyCameraApp");
    // This location works best if you want the created images to be shared
    // between applications and persist after your app has been uninstalled.

    // Create the storage directory if it does not exist
    if (! mediaStorageDir.exists()){
        if (! mediaStorageDir.mkdirs()){
            Log.d("MyCameraApp", "failed to create directory");
            return null;
        }
    }

    // Create a media file name
    String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
    File mediaFile;
    if (type == MEDIA_TYPE_IMAGE){
        mediaFile = new File(mediaStorageDir.getPath() + File.separator +
        "IMG_"+ timeStamp + ".jpg");
    } else if(type == MEDIA_TYPE_VIDEO) {
        mediaFile = new File(mediaStorageDir.getPath() + File.separator +
        "VID_"+ timeStamp + ".mp4");
    } else {
        return null;
    }

    return mediaFile;
}