Исключение Nullpointer на медиаплеере в другом классе

У меня проблема с этим приложением. Я думаю, что это вопрос контекста, но я не могу определить проблему, а затем решить ее либо ... Я уже разместил вопрос с подобным, но человек в комментариях (единственный, кто комментировал, сказал мне повторите вопрос, добавив более подробную информацию ... Дело в том, что у меня действительно нет других деталей! Я мог бы называть эту функцию из основного, но из-за этой трудности я НЕВИДИМО, и предпочитаю обрабатывать ее в упорядоченном дивиденде в разных классах ..Исключение Nullpointer на медиаплеере в другом классе

package org.altervista.xsparter.www.app01; 

    import android.app.Activity; 
    import android.content.Context; 
    import android.content.res.Resources; 
    import android.media.MediaPlayer; 
    import android.os.Bundle; 

    /** 
    * Created by Domenico on 03/08/2015. 
    */ 

    public class actionview extends Activity { 
     public boolean[] isplaying = {false,false,false,false,false,false,false,false}; 
     public boolean[] ditofound = {false,false,false,false,false,false,false,false}; 
     public int[] numerazioniastiera = new int[8]; 
     public boolean generalplay = false; 
     boolean ditoscreen = false; 
     public int action; 
     int x; 
     int y; 


      public void getSound(String nota){ 
       Main Main = new Main(); 
       //Se la nota è docentrale 
       Resources res = this.getResources(); 
       int soundId = res.getIdentifier(nota, "raw", this.getPackageName()); 
       MediaPlayer mp1 = MediaPlayer.create(this,soundId); 
      } 

    }

вызывающий метода:

public class MyTouchListener implements View.OnTouchListener { 

@Override 
public boolean onTouch(View v, MotionEvent event) { 
    actionview actionview = new actionview(); 

    onTouchEvent(event); 
    if (event.getAction() == MotionEvent.ACTION_DOWN){ 
    switch(v.getId()){ 
     case R.id.nota1: 
      System.err.println("Nota1"); 
      actionview.getSound("c3"); 
      //do stuff for button 1 
      break; 
     case R.id.nota2: 
      System.err.println("Nota2"); 
      //do stuff for button 
      break; 
     case R.id.nota3: 
      System.err.println("Nota3"); 
      //do stuff for button 1 


     break; 
    case R.id.nota4: 
     System.err.println("Nota4"); 
     //do stuff for button 1 
     break; 
    case R.id.nota5: 
     System.err.println("Nota5"); 
     //do stuff for button 1 
     break; 
    case R.id.nota6: 
     System.err.println("Nota6"); 
     //do stuff for button 1 
     break; 
    case R.id.nota7: 
     System.err.println("Nota7"); 


     //do stuff for button 1 
      break; 
     case R.id.nota8: 
      System.err.println("Nota8"); 
      //do stuff for button 1 
      break; 

    }} 
    return true; 
}

}

Logcat:

08-08 20:48:16.533 5056-5056/org.altervista.xsparter.www.app01 E/InputEventReceiver﹕ Exception dispatching input event. 
08-08 20:48:16.534 5056-5056/org.altervista.xsparter.www.app01 E/MessageQueue-JNI﹕ Exception in MessageQueue callback: handleReceiveCallback 
08-08 20:48:16.572 5056-5056/org.altervista.xsparter.www.app01 E/MessageQueue-JNI﹕ java.lang.NullPointerException 
      at android.content.ContextWrapper.getResources(ContextWrapper.java:89) 
      at android.view.ContextThemeWrapper.getResources(ContextThemeWrapper.java:78) 
      at org.altervista.xsparter.www.app01.actionview.getSound(actionview.java:27) 
      at org.altervista.xsparter.www.app01.Main$MyTouchListener.onTouch(Main.java:97) 
      at android.view.View.dispatchTouchEvent(View.java:7701) 
      at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216) 
      at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
      at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216) 
      at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
      at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216) 
      at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
      at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216) 
      at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
      at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216) 
      at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
      at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216) 
      at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
      at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216) 
      at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
      at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216) 
      at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
      at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216) 
      at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
      at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2068) 
      at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1515) 
      at android.app.Activity.dispatchTouchEvent(Activity.java:2458) 
      at android.support.v7.internal.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:59) 
      at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:2016) 
      at android.view.View.dispatchPointerEvent(View.java:7886) 
      at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:3982) 
      at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:3861) 
      at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3425) 
      at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3475) 
      at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3444) 
      at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:3551) 
      at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3452) 
      at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:3608) 
      at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3425) 
      at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3475) 
      at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3444) 
      at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3452) 
      at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3425) 
      at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:5630) 
      at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:5610) 
      at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:5581) 
      at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:5710) 
      at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:185) 
      at android.os.MessageQueue.nativePollOnce(Native Method) 
      at android.os.MessageQueue.next(MessageQueue.java:138) 
      at android.os.Looper.loop(Looper.java:123) 
      at android.app.ActivityThread.main(ActivityThread.java:5017) 
      at java.lang.reflect.Method.invokeNative(Native Method) 
      at java.lang.reflect.Method.invoke(Method.java:515) 
      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785) 
      at c 
08-08 20:48:16.579 5056-5056/org.altervista.xsparter.www.app01 D/AndroidRuntime﹕ Shutting down VM 
08-08 20:48:16.579 5056-5056/org.altervista.xsparter.www.app01 W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0x41694ba8) 
08-08 20:48:16.583 5056-5056/org.altervista.xsparter.www.app01 E/AndroidRuntime﹕ FATAL EXCEPTION: main 
    Process: org.altervista.xsparter.www.app01, PID: 5056 
    java.lang.NullPointerException 
      at android.content.ContextWrapper.getResources(ContextWrapper.java:89) 
      at android.view.ContextThemeWrapper.getResources(ContextThemeWrapper.java:78) 
      at org.altervista.xsparter.www.app01.actionview.getSound(actionview.java:27) 
      at org.altervista.xsparter.www.app01.Main$MyTouchListener.onTouch(Main.java:97) 
      at android.view.View.dispatchTouchEvent(View.java:7701) 
      at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216) 
      at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
      at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216) 
      at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
      at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216) 
      at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
      at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216) 
      at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
      at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216) 
      at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
      at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216) 
      at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
      at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216) 
      at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
      at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216) 
      at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
      at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216) 
      at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
      at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2068) 
      at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1515) 
      at android.app.Activity.dispatchTouchEvent(Activity.java:2458) 
      at android.support.v7.internal.view.WindowCallbackWrapper.dispatchTouchEvent(WindowCallbackWrapper.java:59) 
      at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:2016) 
      at android.view.View.dispatchPointerEvent(View.java:7886) 
      at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:3982) 
      at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:3861) 
      at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3425) 
      at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3475) 
      at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3444) 
      at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:3551) 
      at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3452) 
      at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:3608) 
      at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3425) 
      at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3475) 
      at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3444) 
      at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3452) 
      at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3425) 
      at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:5630) 
      at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:5610) 
      at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:5581) 
      at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:5710) 
      at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:185) 
      at android.os.MessageQueue.nativePollOnce(Native Method) 
      at android.os.MessageQueue.next(MessageQueue.java:138) 
      at android.os.Looper.loop(Looper.java:123) 
      at android.app.ActivityThread.main(ActivityThread.java:5017) 
      at java.lang.reflect.Method.invokeNative(Native Method) 
      at java.lang.reflect.Method.invoke(Method.java:515) 
      at com.android

источник

2015-08-08 Animal

Будет ли эта помощь: Http: //stackoverflow.com/questions/8238588/how-to- call-getresources-from-a-class-which-has-no-context –

использует отладчик в вашей среде IDE. – MWiesner

Если бы та же проблема Добавьте это в OnDestroy

@Override 
protected void onDestroy() { 
    super.onDestroy(); 
    if (mMediaPlayer != null) { 
     mMediaPlayer.stop(); 
     mMediaPlayer.release(); 
     mMediaPlayer = null; 
    }

источник

2015-08-08 20:37:23

скажите, если это сработало –

Исключение Nullpointer на медиаплеере в другом классе

ответ

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