Question

这个方法在某些情况下有Nullpointer Exception，我使用throws来捕获这个异常，但它没有捕获，我在做错了什么???

方法： -

void soundAtPlayOneForssahAnimation() throws NullPointerException{
        new Handler().postDelayed(new Runnable() {
            @Override
            public void run() {
                releaseResource();
                mp_button_Click = (MediaPlayer.create(getActivity(), R.raw.forssah_button_clicked_sound_points));
                mp_button_Click.start();
                mp_button_Click.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
                    @Override
                    public void onCompletion(MediaPlayer mp) {
                        mp.stop();
                        mp.reset();
                        mp.release();
                        mp_button_Click = null;
                    }
                });
            }
        }, 100);

        //wait for .7s to match the duration
        new Handler().postDelayed(new Runnable() {
            @Override
            public void run() {
                releaseResource();
                mp_button_Click = MediaPlayer.create(getActivity(), R.raw.coupon_rotation_sound_thick_tope_five_seconds);
                mp_button_Click.start();
            }
        }, 700);

        //wait for the coupon rotation finished
        couponRotationFinishedMusicHandler = new Handler();
        couponRotationFinishedMusicHandler.postDelayed(new Runnable() {
            @Override
            public void run() {
                releaseResource();
                mp_button_Click = MediaPlayer.create(getActivity(), R.raw.coupon_rotation_finished_sound_arcade_reveal);
                mp_button_Click.start();
                couponRotationFinishedMusicHandler = null;

            }
        }, 6500);

        //wait for the timer start

        timerCountMusicHandler = new Handler();
        timerCountMusicHandler.postDelayed(new Runnable() {
            @Override
            public void run() {
                releaseResource();
                mp_button_Click = MediaPlayer.create(getActivity(), R.raw.timer_count_sound_quiz_thinking);
                mp_button_Click.start();
                timerCountMusicHandler = null;
            }
        }, 7300);


        //wait for the timer till 5sec remaining
        warningTimerCountMusicHandler = new Handler();
        warningTimerCountMusicHandler.postDelayed(new Runnable() {
            @Override
            public void run() {
                warningTimerCountMusic = MediaPlayer.create(getActivity(), R.raw.warning_timer_sound_second_countdown);
                warningTimerCountMusic.start();
                new Handler().postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        //releaseResource();
                        if (warningTimerCountMusic != null) {
                            warningTimerCountMusic.release();
                            warningTimerCountMusic = null;
                            if (mp_button_Click != null) {
                                mp_button_Click.release();
                                mp_button_Click = null;
                                warningTimerCountMusicHandler = null;
                            }
                        }
                    }
                }, 5900);
            }
        }, (sessionTimeOut + 2) * 1000);
    }

这就是我所说的： -

try {
        soundAtPlayOneForssahAnimation();
    } catch (NullPointerException e) {
        e.printStackTrace();
    }

我的问题是它没有陷入阻挡

日志： -

03-09 15：18：36.180 26446-26446 / com.awicompany.forssah E / UncaughtException：java.lang.NullPointerException：尝试调用虚方法＆＃39; android.content.res.Resources android.content.Context.getResources（）＆＃39;在null对象引用上在android.media.MediaPlayer.create（MediaPlayer.java:1007）在android.media.MediaPlayer.create（MediaPlayer.java:990）在 com.awicompany.forssah.ui.fragments.GetDiscount_Tutorial $ 22.run（GetDiscount_Tutorial.java:2799）在android.os.Handler.handleCallback（Handler.java:739）在android.os.Handler.dispatchMessage（Handler.java:95）在android.os.Looper.loop（Looper.java:158）在android.app.ActivityThread.main（ActivityThread.java:7229） at java.lang.reflect.Method.invoke（Native Method）在 com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit.java:1230）在com.android.internal.os.ZygoteInit.main（ZygoteInit.java:1120)03-09 15：18：36.180 26446-26822 / com.awicompany.forssah I / System.out：（HTTPLog）-Static：isSBSettingEnabled false 03-09 15：18：36.180 26446-26822 / com.awicompany.forssah I / System.out：（HTTPLog）-Static： isSBSettingEnabled false 03-09 15：18：36.180 26446-26780 / com.awicompany.forssah D / FA：记录事件（FE）：_ ae，捆绑[{_ o = crash，_sc = HomeActivity，_si = -7309909218007751274， timestamp = 1489061916190，fatal = 1}] 03-09 15：18：36.200 26446-26780 / com.awicompany.forssah V / FA：使用测量服务 03-09 15：18：36.200 26446-26780 / com.awicompany.forssah V / FA：正在连接远程服务03-09 15：18：36.430 26446-26446 / com.awicompany.forssah E / AndroidRuntime：FATAL EXCEPTION：主要过程：com.awicompany.forssah，PID：26446 java.lang.NullPointerException：尝试调用虚方法＆＃39; android.content.res.Resources android.content.Context.getResources（）＆＃39; 在null对象引用上在android.media.MediaPlayer.create（MediaPlayer.java:1007）在android.media.MediaPlayer.create（MediaPlayer.java:990）在 com.awicompany.forssah.ui.fragments.GetDiscount_Tutorial $ 22.run（GetDiscount_Tutorial.java:2799）在android.os.Handler.handleCallback（Handler.java:739）在android.os.Handler.dispatchMessage（Handler.java:95）在android.os.Looper.loop（Looper.java:158）在android.app.ActivityThread.main（ActivityThread.java:7229） at java.lang.reflect.Method.invoke（Native Method）在 com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit.java:1230）在com.android.internal.os.ZygoteInit.main（ZygoteInit.java:1120）

使用throws

0 个答案: