android调用系统相机录制视频并保存本地

public class VideoActivity extends AppCompatActivity {
    public static Handler handler;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_video2);
        Intent intent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
        Uri fileUri = null;
        try {
            fileUri = Uri.fromFile(createMediaFile()); // create a file to save the video
        } catch (IOException e) {
            e.printStackTrace();
        }
        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, 1);

    }
    private File createMediaFile() throws IOException {
        File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MOVIES), "CameraDemo");
        if (!mediaStorageDir.exists()) {
            if (!mediaStorageDir.mkdirs()) {
                return null;
            }
        }
        String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
        String imageFileName = "VID_" + timeStamp;
        String suffix = ".mp4";
        File mediaFile = new File(mediaStorageDir + File.separator + imageFileName + suffix);
        return mediaFile;
    }
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (requestCode == 1) {
            if (resultCode == RESULT_OK) {
                // Video captured and saved to fileUri specified in the Intent
                Uri data1 = data.getData();
                //拿到视频保存地址
                String s = data1.toString();
                String[] split = s.split(":");
                Message msg = Message.obtain();
                msg.obj = split[1];
                if (handler != null) {
                    handler.sendMessage(msg);
                }
            } else if (resultCode == RESULT_CANCELED) {
                // User cancelled the video capture
            } else {
                // Video capture failed, advise user
            }
        }
        finish();
    }


}