Android 打开新活动时倒计时onFinish（）崩溃（视频循环完成后）

我正在开发这个非常简单的应用程序，它可以循环播放视频，并附带一个倒计时。 基本上，我有以下几点：

我实例化了视频视图

如果用户检查了视频循环（1x或2x）

然后在倒计时的

onFinish（）

中，我等待几秒钟，然后启动一个新的活动，如下所示：

    public void openCompletedWorkout() {

     handler = new Handler();

    handler.postDelayed(new Runnable() {

        @Override
        public void run() {

            final Intent mainIntent = new Intent(getActivity(), CompletedWorkoutActivity.class);
            getActivity().startActivity(mainIntent);
            getActivity().finish();
        }

    }, 5000);

}

上述方法在

onFinish（）

方法（属于

conaddowntimer

的）内部调用

问题是，如果用户不想让videoPlayer循环，则一切正常，这意味着

onFinish（）

函数调用

OpenCompletedWorkout（）

方法而不会崩溃（活动打开时没有问题）。但是，当用户表示希望视频循环1x或2x时，当需要调用

onFinish（）

时，应用程序崩溃

10-14 13:15:29.273: E/MediaPlayer(18712): [MediaPlayer.java:767:setDataSource()] setDataSource() uri: android.resource://com.pocketworkouts.armsworkout/2130968576

我不知道怎么了。在过去的4小时里，我一直在努力解决这个问题，但仍然有很多问题

下面是我的活动片段，所有的事情都发生在这里：

public class PlayVideoFragment extends Fragment implements View.OnClickListener {

private static final String VIDEO_PATH = "android.resource://";

TextView screenTitle;
TextView textTitle;
String myTime;
String myPlan;
private ImageButton pauseButton;
private ImageButton playButton;
private VideoView videoPlayer;
private MediaController mc;
private TextView counter;
private MediaPlayer soundPlayer;

private int mRepeats;

String output;
MyCounter downCounter;

int length;
long leftTime;
long seconds;

Handler handler;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedStateInstance) {

    View v = inflater.inflate(R.layout.play_video_container, container,
            false);

    pauseButton = (ImageButton) v.findViewById(R.id.pauseButton);
    pauseButton.setOnClickListener(this);

    playButton = (ImageButton) v.findViewById(R.id.playButton);
    playButton.setOnClickListener(this);

    counter = (TextView) v.findViewById(R.id.counter);

    Bundle bundle = getArguments();
    if (bundle != null) {
        myTime = bundle.getString("time");
        myPlan = bundle.getString("plan");
    }

    videoPlayer = (VideoView) v.findViewById(R.id.videoPlayer);

    if (myPlan.equals("intense")) {

        if (myTime.equals("fiveMin")) {
            playVideoTimed(R.raw.abs_workout_one, myTime.toString(), 0);

        } else if (myTime.equals("tenMin")) {
            playVideoTimed(R.raw.abs_workout_one, myTime.toString(), 1);
            // Toast.makeText(getActivity(), "LOOOP ONCE!!",
            // Toast.LENGTH_LONG).show();

        } else if (myTime.equals("fifteenMin")) {
            playVideoTimed(R.raw.abs_workout_one, myTime.toString(), 2);
        }

        // playVideo(R.raw.abs_workout_one, myTime.toString());

    } else if (myPlan.equals("extreme")) {

        if (myTime.equals("fiveMin")) {
            playVideoTimed(R.raw.abs_workout_two, myTime.toString(), 0);

        } else if (myTime.equals("tenMin")) {

            playVideoTimed(R.raw.abs_workout_two, myTime.toString(), 1);

        } else if (myTime.equals("fifteenMin")) {
            playVideoTimed(R.raw.abs_workout_two, myTime.toString(), 2);
        }

        // playVideo(R.raw.abs_workout_two, myTime.toString());

    } else if (myPlan.equals("insane")) {

        if (myTime.equals("fiveMin")) {
            playVideoTimed(R.raw.abs_workout_three, myTime.toString(), 0);

        } else if (myTime.equals("tenMin")) {

            playVideoTimed(R.raw.abs_workout_three, myTime.toString(), 1);

        } else if (myTime.equals("fifteenMin")) {

            playVideoTimed(R.raw.abs_workout_three, myTime.toString(), 2);
        }

        // playVideo(R.raw.abs_workout_three, myTime.toString());

    }

    return v;

}

public void playVideoTimed(int videoPath, String mins, int repeats) {

    long timeElapsed = 0;

    if (mins.equals("fiveMin")) {
        repeats = 0;
        mRepeats = 0;
        timeElapsed = 300000;

    } else if (mins.equals("tenMin")) {
        repeats = 1;
        mRepeats = 1;
        timeElapsed = 600000;

    } else if (mins.equals("fifteenMin")) {
        repeats = 2;
        mRepeats = 2;
        timeElapsed = 900000;
    }
    downCounter = new MyCounter(timeElapsed, 1000);
    downCounter.start();

    Uri uri = Uri.parse(VIDEO_PATH + getActivity().getPackageName() + "/"
            + videoPath);

    mc = new MediaController(getActivity());
    videoPlayer.setMediaController(null); // used to be mc being passed to
                                            // show controls
    videoPlayer.setVideoURI(uri);
    videoPlayer.requestFocus();
    videoPlayer.start();

    videoPlayer.setOnCompletionListener(new OnCompletionListener() {

        @Override
        public void onCompletion(MediaPlayer mp) {

            if (mRepeats == 1) {

                mp.setLooping(false);
                mp.seekTo(0);
                mp.start();

                mp.setOnCompletionListener(new OnCompletionListener() {

                    @Override
                    public void onCompletion(MediaPlayer mp) {
                        mp.setLooping(false);
                        //mp.seekTo(0);
                        //mp.stop();
                        try{

                            mp.stop();
                            mp.reset();
                            mp.release();
                            mp = null;


                        }catch(IllegalStateException e) {
                            e.printStackTrace();
                        }

                    }

                });

            } // end if
            else if (mRepeats == 2) {

                mp.seekTo(0);
                mp.start();

                mp.setOnCompletionListener(new OnCompletionListener() {

                    @Override
                    public void onCompletion(MediaPlayer mp) {

                        try{

                            mp.setLooping(false);
                            mp.seekTo(0);
                            mp.start();

                        }catch (IllegalStateException e) {
                            e.printStackTrace();
                        }

                        mp.setOnCompletionListener(new OnCompletionListener() {

                            @Override
                            public void onCompletion(MediaPlayer mp) {

                                try{
                                    mp.setLooping(false);
                                    mp.stop();
                                    mp.reset();
                                    mp.release();
                                    mp = null;


                                }catch (IllegalStateException e) {
                                    e.printStackTrace();
                                }


                            }

                        });

                    }

                });
            }// end final IF

        } // END FUNCTION

    });

}

public void playVideo(int videoPath, String mins) {
    long timeElapsed = 0;

    if (mins.equals("fiveMin")) {
        timeElapsed = 300000;

    } else if (mins.equals("tenMin")) {
        timeElapsed = 600000;

    } else if (mins.equals("fifteenMin")) {
        timeElapsed = 900000;
    }
    downCounter = new MyCounter(timeElapsed, 1000);
    downCounter.start();

    Uri uri = Uri.parse(VIDEO_PATH + getActivity().getPackageName() + "/"
            + videoPath);

    mc = new MediaController(getActivity());
    videoPlayer.setMediaController(null); // used to be mc being passed to
                                            // show controls
    videoPlayer.setVideoURI(uri);
    videoPlayer.requestFocus();
    videoPlayer.start();

}

public void playDoneSound() {
    soundPlayer = MediaPlayer.create(getActivity(),
            R.raw.well_done_workout_completed);
    soundPlayer.start();
}

public void killSounds() {
    if (soundPlayer != null) {
        soundPlayer.stop();
        soundPlayer.release();
    }
}

@Override
public void onClick(View v) {
    switch (v.getId()) {
    case R.id.pauseButton:
        videoPlayer.pause();
        playButton.setVisibility(View.VISIBLE);
        pauseButton.setVisibility(View.INVISIBLE);
        downCounter.cancel();

        break;

    case R.id.playButton:
        videoPlayer.seekTo(videoPlayer.getCurrentPosition());
        videoPlayer.start(); // little hack to get the video to play from
                                // where it stopped

        pauseButton.setVisibility(View.VISIBLE);
        playButton.setVisibility(View.INVISIBLE);
        downCounter = new MyCounter(leftTime, 1000);
        downCounter.start();
        // downCounter
        break;

    }

}

// inner class for our timer
/**
 * 
 * @author http://stackoverflow.com/questions/16584328/track-each-minute-in-
 *         countdown-timer
 * 
 */

public String formatTime(long millis) {

    output = "";
    seconds = millis / 1000;
    long minutes = seconds / 60;
    long hours = minutes / 60;

    seconds = seconds % 60;
    minutes = minutes % 60;
    hours = hours % 60;

    String secondsD = String.valueOf(seconds);
    String minutesD = String.valueOf(minutes);
    String hoursD = String.valueOf(hours);

    if (hours > 10)
        secondsD = "0" + seconds;
    if (minutes < 10)
        minutesD = "0" + minutes;

    if (hours < 10)
        hoursD = "0" + hours;

    if (seconds < 10)
        secondsD = "0" + seconds;

    // output = hoursD+" : " +minutesD + " : " + secondsD;
    output = minutesD + " : " + secondsD;
    return output;

}

public class MyCounter extends CountDownTimer {

    Context mContext;

    public MyCounter(long millisInFuture, long countDownInterval) {
        super(millisInFuture, countDownInterval);

    }

    @Override
    public void onFinish() {

        counter.setText("Done!");
        playDoneSound();
        downCounter.cancel();
        downCounter = null;

        //if (mRepeats == 0) {
            openCompletedWorkout();
        //}

    }

    @Override
    public void onTick(long millisUntilFinished) {

        leftTime = millisUntilFinished;

        counter.setText(formatTime(millisUntilFinished));

    }


    public void openCompletedWorkout() {

         handler = new Handler();

        handler.postDelayed(new Runnable() {

            @Override
            public void run() {

                final Intent mainIntent = new Intent(getActivity(), CompletedWorkoutActivity.class);
                getActivity().startActivity(mainIntent);
                getActivity().finish();
            }

        }, 5000);

    }

}

10-1413:25:29.669:E/MediaPlayer（18712）：[MediaPlayer.java:1198:release（）]release（）
10-14 13:25:34.874:W/dalvikvm（18712）：threadid=1：线程以未捕获异常退出（组=0x4001d560）
10-1413:25:34.904:E/AndroidRuntime（18712）：致命异常：main
10-1413:25:34.904:E/AndroidRuntime（18712）：java.lang.IllegalStateException
10-1413:25:34.904:E/AndroidRuntime（18712）：在android.media.MediaPlayer上重置（本机方法）
10-1413:25:34.904:E/AndroidRuntime（18712）：在android.media.MediaPlayer.reset（MediaPlayer.java:1228）
10-1413:25:34.904:E/AndroidRuntime（18712）：在android.widget.VideoView.release（VideoView.java:505）
10-1413:25:34.904:E/AndroidRuntime（18712）：在android.widget.VideoView.access$2100（VideoView.java:49）
10-1413:25:34.904:E/AndroidRuntime（18712）：在android.widget.VideoView$6.surfaceDestroyed（VideoView.java:495）
10-14 13:25:34.904:E/AndroidRuntime（18712）：在android.view.SurfaceView.reportSurfaceDestroyed（SurfaceView.java:596）
10-1413:25:34.904:E/AndroidRuntime（18712）：在android.view.SurfaceView.updateWidow（SurfaceView.java:490）
10-14 13:25:34.904:E/AndroidRuntime（18712）：在android.view.SurfaceView.onWindowVisibilityChanged（SurfaceView.java:215）
10-14 13:25:34.904:E/AndroidRuntime（18712）：在android.view.view.dispatchWindowVisibilityChanged（view.java:4098）
10-14 13:25:34.904:E/AndroidRuntime（18712）：在android.view.ViewGroup.dispatchWindowVisibilityChanged（ViewGroup.java:720）
10-14 13:25:34.904:E/AndroidRuntime（18712）：在android.view.ViewGroup.dispatchWindowVisibilityChanged（ViewGroup.java:720）
10-14 13:25:34.904:E/AndroidRuntime（18712）：在android.view.ViewGroup.dispatchWindowVisibilityChanged（ViewGroup.java:720）
10-14 13:25:34.904:E/AndroidRuntime（18712）：在android.view.ViewGroup.dispatchWindowVisibilityChanged（ViewGroup.java:720）
10-14 13:25:34.904:E/AndroidRuntime（18712）：在android.view.ViewGroup.dispatchWindowVisibilityChanged（ViewGroup.java:720）
10-1413:25:34.904:E/AndroidRuntime（18712）：在android.view.ViewRoot.performTraversals（ViewRoot.java:786）
10-1413:25:34.904:E/AndroidRuntime（18712）：在android.view.ViewRoot.handleMessage（ViewRoot.java:1863）
10-1413:25:34.904:E/AndroidRuntime（18712）：在android.os.Handler.dispatchMessage（Handler.java:99）上
10-1413:25:34.904:E/AndroidRuntime（18712）：在android.os.Looper.loop（Looper.java:130）
10-1413:25:34.904:E/AndroidRuntime（18712）：在android.app.ActivityThread.main（ActivityThread.java:3683）
10-14 13:25:34.904:E/AndroidRuntime（18712）：位于java.lang.reflect.Method.Invokenactive（本机方法）
10-1413:25:34.904:E/AndroidRuntime（18712）：在java.lang.reflect.Method.invoke（Method.java:507）
10-14 13:25:34.904:E/AndroidRuntime（18712）：在com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run（ZygoteInit.java:889）
10-1413:25:34.904:E/AndroidRuntime（18712）：在com.android.internal.os.ZygoteInit.main（ZygoteInit.java:647）
10-14 13:25:34.904:E/AndroidRuntime（18712）：在dalvik.system.NativeStart.main（本机方法）


我们将非常感谢您的帮助

谢谢。
LogCat打印输出，即使它们没有说太多，也非常有用，可以包含在您的问题中。只是添加了LogCat。谢谢