アンドロイド音声メディアプレーヤのIllegalStateExceptionが無音声

Question

java.lang.RuntimeException：}活性MainActivityを再開することができません： java.lang.IllegalStateExceptionに起因：android.media.MediaPlayer.prepareで java.lang.IllegalStateException（ com.example.caneraydin.androidwithlogin.MainActivity.onResume（MainActivity.java:138）

でネイティブメソッド） このコード

@Override 
    public void onResume() { 
     super.onResume(); 
     MediaPlayer mMediaPlayer = new MediaPlayer(); 
     mMediaPlayer = MediaPlayer.create(this,R.raw.mainactivitymp3); 
     mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC); 
     mMediaPlayer.setLooping(true); 
     try { 
      mMediaPlayer.prepare(); 
      Log.d(TAG,"mainonresumemediaplayer"); 
     } catch (IOException e) { 
      Log.d(TAG,"mainonresume mediaplayer error"); 
      e.printStackTrace(); 
     } 
     mMediaPlayer.start();//.release();// STOPSHIP: 6/2/2016 

私はここにいるだけで、他には何もありません。 だから私はすべてのonCreateにコードが、

prepare 

ラインのまだ同じエラーを動かしました。

私は準備を削除し、

MediaPlayer mMediaPlayer = new MediaPlayer(); 
    mMediaPlayer = MediaPlayer.create(this, R.raw.mainactivitymp3); 
    mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC); 
    mMediaPlayer.setLooping(true); 
    mMediaPlayer.start();//.release();// STOPSHIP: 6/2/2016 

音が出ない。私はmainactivityを起動したときには、E/MediaPlayerの

（smethingクリックするまでmainactivityは永久にアクティブなまま）書き込み：字幕コントローラが既にリリースされずに確定

のMediaPlayerを設定しておく必要があります（私はまだ、 mainactivityを終了しませんでしたアクティブ）

.493 760-769/? V/MediaPlayer-JNI: native_finalize 
.493 760-769/? V/MediaPlayer-JNI: release 
.543 760-769/? V/MediaPlayer-JNI: native_finalize 
.543 760-769/? V/MediaPlayer-JNI: release 
.543 24067-24067/com.example W/ApplicationPackageManager: getCSCPackageItemText() 
.543 760-769/? V/MediaPlayer-JNI: native_finalize 
.543 760-769/? V/MediaPlayer-JNI: release 
.733 24067-24067/com.example V/MediaPlayer-JNI: native_setup 
.733 24067-24067/com.example V/MediaPlayer: constructor 
.743 24067-24067/com.example V/MediaPlayer: setListener 
.753 24067-24067/com.example V/MediaPlayer-JNI: native_setup 
.753 24067-24067/com.example V/MediaPlayer: constructor 
.753 24067-24067/com.example V/MediaPlayer: setListener 
.753 24067-24067/com.example V/MediaPlayer-JNI: setDataSourceFD: fd 49 
.753 24067-24067/com.example V/MediaPlayer: setDataSource(49, 597544, 1376079) 
.763 168-556/? V/MediaPlayerService: Create new client(312) from pid 24067, uid 10177, 
.763 168-430/? V/MediaPlayerService: setDataSource fd=39, offset=597544, length=1376079 
.763 168-430/? V/MediaPlayerService: st_dev = 45849 
.763 168-430/? V/MediaPlayerService: st_mode = 33188 
.763 168-430/? V/MediaPlayerService: st_uid = 1000 
.763 168-430/? V/MediaPlayerService: st_gid = 1000 
.763 168-430/? V/MediaPlayerService: st_size = 3186530 
.763 168-430/? V/MediaPlayerService: player type = 3 
.773 168-430/? V/AudioSink: AudioOutput(1947) 
.773 168-430/? V/MediaPlayerService: [312] notify (0xb7d93b78, 8, 0, 0) 
.773 24067-24079/com.example V/MediaPlayer: message received msg=8, ext1=0, ext2=0 
.773 24067-24079/com.example V/MediaPlayer: notify(8, 0, 0) callback on disconnected mediaplayer 
.833 167-19415/? D/WVMDrmPlugIn: WVMDrmPlugin::onInitialize : 6449 
.833 167-19415/? D/WVMDrmPlugIn: WVMDrmPlugin::onSetOnInfoListener : add 6449 
.843 167-167/? D/WVMDrmPlugIn: WVMDrmPlugin::onTerminate : 6449 
.843 168-430/? V/MediaExtractor: Autodetected media content as 'audio/mpeg' with confidence 0.20 
.843 168-30639/? V/MediaPlayerService: [312] getParameter(1700) 
.843 24067-24067/com.example V/MediaPlayer: setVideoSurfaceTexture 
.843 168-868/? V/MediaPlayerService: [312] setVideoSurfaceTexture(0x0) 
.843 24067-24067/com.example V/MediaPlayer: prepare 
.843 168-168/? V/MediaPlayerService: [312] setAudioStreamType(3) 
.843 168-20316/? V/MediaPlayerService: [312] prepareAsync 
.873 168-24099/? V/MediaPlayerService: [312] notify (0xb7d93b78, 5, 0, 0) 
.873 168-24099/? V/MediaPlayerService: [312] notify (0xb7d93b78, 1, 0, 0) 
.873 24067-24078/com.example V/MediaPlayer: message received msg=5, ext1=0, ext2=0 
.873 24067-24078/com.example V/MediaPlayer: New video size 0 x 0 
.873 24067-24078/com.example V/MediaPlayer: callback application 
.873 24067-24078/com.example V/MediaPlayer: back from callback 
.873 24067-24078/com.example V/MediaPlayer: message received msg=1, ext1=0, ext2=0 
.873 24067-24078/com.example V/MediaPlayer: prepared 
.873 24067-24078/com.example V/MediaPlayer: signal application thread 
.873 24067-24078/com.example V/MediaPlayer: callback application 
.873 24067-24067/com.example V/MediaPlayer: prepare complete - status=0 
.873 24067-24067/com.example V/MediaPlayer-JNI: setAudioStreamType: 3 
.873 24067-24078/com.example V/MediaPlayer: back from callback 
.873 24067-24067/com.example V/MediaPlayer: MediaPlayer::setAudioStreamType 
.873 24067-24067/com.example V/MediaPlayer-JNI: setLooping: 1 
.873 24067-24067/com.example V/MediaPlayer: MediaPlayer::setLooping 
.873 168-556/? V/MediaPlayerService: [312] setLooping(1) 
.873 24067-24067/com.example V/MediaPlayer-JNI: start 
.873 24067-24067/com.example V/MediaPlayer: start 
.873 168-430/? V/MediaPlayerService: [312] setLooping(1) 
.873 168-30639/? V/MediaPlayerService: [312] setVolume(1.000000, 1.000000) 
.873 168-30639/? V/AudioSink: setVolume(1.000000, 1.000000) 
.873 168-30639/? V/MediaPlayerService: [312] setAuxEffectSendLevel(0.000000) 
.873 168-30639/? V/AudioSink: setAuxEffectSendLevel(0.000000) 
.873 168-168/? V/MediaPlayerService: [312] start 
.883 168-168/? V/MediaPlayerService: [312] notify (0xb7d93b78, 6, 0, 0) 
.883 24067-24079/com.example V/MediaPlayer: message received msg=6, ext1=0, ext2=0 
.883 24067-24067/com.example D/Chic: MAINACTIVITY OnCreate************* 
.883 24067-24079/com.example V/MediaPlayer: Received MEDIA_STARTED 
.883 24067-24079/com.example V/MediaPlayer: callback application 
.883 24067-24079/com.example V/MediaPlayer: back from callback 
06-02 09:25:27.324 24067-24067/com.example I/MediaPlayer: Don't send intent. msg.arg1 = 0, msg.arg2 = 0 
06-02 09:25:27.324 24067-24067/com.example E/MediaPlayer: Should have subtitle controller already set 
06-02 09:25:27.424 24067-24067/com.example D/OpenGLRenderer: Enabling debug mode 0 
06-02 09:25:27.494 24067-24067/com.example V/MediaPlayer-JNI: getCurrentPosition: 720 (msec) 
06-02 09:25:27.494 24067-24067/com.example V/MediaPlayer-JNI: isPlaying: 1 
06-02 09:25:27.534 24067-24146/com.example I/dalvikvm-heap: Grow heap (frag case) to 13.910MB for 3112976-byte allocation 
06-02 09:25:27.624 24067-24076/com.example V/MediaPlayer-JNI: native_finalize 
06-02 09:25:27.624 24067-24146/com.example D/dalvikvm: GC_FOR_ALLOC freed 3480K, 32% free 9389K/13768K, paused 25ms, total 35ms 
06-02 09:25:27.624 24067-24076/com.example W/MediaPlayer-JNI: MediaPlayer finalized without being released 
06-02 09:25:27.624 24067-24076/com.example V/MediaPlayer-JNI: release 
06-02 09:25:27.624 24067-24076/com.example V/MediaPlayer: setListener 
06-02 09:25:27.624 24067-24076/com.example V/MediaPlayer: disconnect 
06-02 09:25:27.624 24067-24076/com.example V/MediaPlayer: destructor 
06-02 09:25:27.624 24067-24076/com.example V/MediaPlayer: disconnect 
06-02 09:25:27.624 24067-24076/com.example V/MediaPlayer-JNI: native_finalize 
06-02 09:25:27.624 24067-24076/com.example W/MediaPlayer-JNI: MediaPlayer finalized without being released 
06-02 09:25:27.624 24067-24076/com.example V/MediaPlayer-JNI: release 
06-02 09:25:27.624 24067-24076/com.example V/MediaPlayer: setListener 
06-02 09:25:27.624 24067-24076/com.example V/MediaPlayer: disconnect 
06-02 09:25:27.624 168-430/? V/MediaPlayerService: disconnect(312) from pid 24067 
06-02 09:25:27.644 168-430/? I/AudioPlayer: reset out 
06-02 09:25:27.644 168-430/? I/SecMediaClock: SecMediaClock destructor 
06-02 09:25:27.644 24067-24076/com.example V/MediaPlayer: destructor 
06-02 09:25:27.644 24067-24076/com.example V/MediaPlayer: disconnect 
06-02 09:25:27.644 168-30639/? V/MediaPlayerService: Client(312) destructor pid = 24067 
06-02 09:25:27.644 168-30639/? V/AudioSink: +++ close 
06-02 09:25:27.644 168-30639/? V/AudioSink: --- close 
06-02 09:25:27.644 168-30639/? V/MediaPlayerService: disconnect(312) from pid 24067 

私はすべての許可を追加しませんでした。 MY現在のもの：

<uses-permission android:name="android.permission.INTERNET" /> 
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission> 
    <uses-permission android:name="android.permission.READ_PHONE_STATE"></uses-permission> 
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> 

Android rebuild project, package org.junit does not exist error

は、これが理由することができますか？

私は0.5秒しか聞こえませんでした。私はたくさんの回をやり直し、私はここで一人しかできませんでした。

Answer 1

は、この方法を試してください -

try{ 
     MediaPlayer mediaPlayer = MediaPlayer.create(this, R.raw.kalimba); 
     mediaPlayer.start();   
    } catch(Exception e) { 
     e.printStackTrace(); 
    }