与一些机器人在音板上的Forceclose问题？

好吧，我的问题是，当我打开应用程序时，我试图点击某些歌曲时强制关闭。这是奇怪的BC它的工作好上的Galaxy Tab，但不是银河S，Droid 2的，充满活力的，等等。这是我使用的东西代码：与一些机器人在音板上的Forceclose问题？

import android.app.Activity; 
import android.media.MediaPlayer; 
import android.os.Bundle; 
import android.view.View; 
import android.widget.Button; 



public class MyMain extends Activity { 


    /** Called when the activity is first created. */ 
    MediaPlayer mpButtonClick; 
    MediaPlayer pButtonClick; 
    MediaPlayer oButtonClick; 
    MediaPlayer tButtonClick; 
    MediaPlayer sButtonClick; 
    MediaPlayer aButtonClick; 
    MediaPlayer dButtonClick; 
    MediaPlayer cButtonClick; 
    MediaPlayer lButtonClick; 
    MediaPlayer himButtonClick; 
    MediaPlayer herButtonClick; 
    MediaPlayer hellButtonClick; 
    MediaPlayer mocButtonClick; 
    MediaPlayer rasButtonClick; 
    MediaPlayer raseButtonClick; 
    MediaPlayer dalekButtonClick; 
    MediaPlayer sharButtonClick; 
    MediaPlayer godButtonClick; 


    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 

     //set up the button sounds 
    mpButtonClick = MediaPlayer.create(this, R.raw.money); 

     Button bmoney = (Button) findViewById(R.id.money); 
     bmoney.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       // TODO Auto-generated method stub 
       mpButtonClick.start(); 

      } 
     }); 


     pButtonClick = MediaPlayer.create(this, R.raw.pants); 

     Button bpants = (Button) findViewById(R.id.pants); 
     bpants.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       // TODO Auto-generated method stub 
       pButtonClick.start(); 

      }  


     }); 

    oButtonClick = MediaPlayer.create(this, R.raw.oath); 

     Button oath = (Button) findViewById(R.id.oath); 
     oath.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       // TODO Auto-generated method stub 
       oButtonClick.start(); 

      }  


     }); 

    tButtonClick = MediaPlayer.create(this, R.raw.tardis); 

     Button tardis = (Button) findViewById(R.id.tardis); 
     tardis.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       // TODO Auto-generated method stub 
       tButtonClick.start(); 

      }  


     }); 

    sButtonClick = MediaPlayer.create(this, R.raw.screwdriver); 

     Button screwdriver = (Button) findViewById(R.id.screwdriver); 
     screwdriver.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       // TODO Auto-generated method stub 
       sButtonClick.start(); 

      }  


     }); 

     aButtonClick = MediaPlayer.create(this, R.raw.alarm); 

     Button alarm = (Button) findViewById(R.id.alarm); 
     alarm.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       // TODO Auto-generated method stub 
       aButtonClick.start(); 

      }  


     }); 

    dButtonClick = MediaPlayer.create(this, R.raw.kame); 

     Button kame = (Button) findViewById(R.id.kame); 
     kame.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       // TODO Auto-generated method stub 
       dButtonClick.start(); 

      }  

      }); 

    cButtonClick = MediaPlayer.create(this, R.raw.card); 

     Button card = (Button) findViewById(R.id.card); 
     card.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       // TODO Auto-generated method stub 
       cButtonClick.start(); 

      }  

      }); 

    lButtonClick = MediaPlayer.create(this, R.raw.laugh); 

     Button laugh = (Button) findViewById(R.id.laugh); 
     laugh.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       // TODO Auto-generated method stub 
       lButtonClick.start(); 

      }  

      }); 

himButtonClick = MediaPlayer.create(this, R.raw.him); 

     Button him = (Button) findViewById(R.id.him); 
     him.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       // TODO Auto-generated method stub 
       himButtonClick.start(); 

      }  

      }); 

herButtonClick = MediaPlayer.create(this, R.raw.her); 

     Button her = (Button) findViewById(R.id.her); 
     her.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       // TODO Auto-generated method stub 
       herButtonClick.start(); 

      }  

      }); 

hellButtonClick = MediaPlayer.create(this, R.raw.hell); 

     Button hell = (Button) findViewById(R.id.hell); 
     hell.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       // TODO Auto-generated method stub 
       hellButtonClick.start(); 

      }  

      }); 

mocButtonClick = MediaPlayer.create(this, R.raw.mocking); 

     Button mocking = (Button) findViewById(R.id.mocking); 
     mocking.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       // TODO Auto-generated method stub 
       mocButtonClick.start(); 

      }  

      }); 

godButtonClick = MediaPlayer.create(this, R.raw.god); 

     Button god = (Button) findViewById(R.id.god); 
     god.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       // TODO Auto-generated method stub 
       godButtonClick.start(); 

      }  

      }); 

rasButtonClick = MediaPlayer.create(this, R.raw.rasengan); 

     Button rasengan = (Button) findViewById(R.id.rasengan); 
     rasengan.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       // TODO Auto-generated method stub 
       rasButtonClick.start(); 

      }  

      }); 

raseButtonClick = MediaPlayer.create(this, R.raw.rasen); 

     Button rasen = (Button) findViewById(R.id.rasen); 
     rasen.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       // TODO Auto-generated method stub 
       raseButtonClick.start(); 

      }  

      }); 

dalekButtonClick = MediaPlayer.create(this, R.raw.dalek); 

     Button dalek = (Button) findViewById(R.id.dalek); 
     dalek.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       // TODO Auto-generated method stub 
       dalekButtonClick.start(); 

      }  

      }); 

sharButtonClick = MediaPlayer.create(this, R.raw.sharingan); 

     Button sharingan = (Button) findViewById(R.id.sharingan); 
     sharingan.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       // TODO Auto-generated method stub 
       sharButtonClick.start(); 

      }  

      }); 




    } 


}

很抱歉的长码我真的很需要帮助

编辑：如果它帮助我总是得到：

显示java.lang.NullPointerException MyMain $ 8.onClick（）

来源

2011-02-10 vamp6x6x6x

请发布完整的fc错误的stacktrace。使用logcat：在eclipse中打开DDMS透视图，或者从命令行运行`adb logcat`。 – 2011-02-10 19:37:24

这不是完整的堆栈跟踪，这只是它的第一行。请发布完整的堆栈跟踪，并告诉我们它指向的代码中的哪一行。该行上的某些内容为空。 – 2011-02-10 20:18:17

巡航能力没有一个logcat的输出或堆栈跟踪，从工作，我的猜测是，你正在通过加载t使大多数设备尖叫怜悯一次性将多个MediaPlayer个实例存入内存！调用MediaPlayer.create()不仅会创建另一个实例，还会调用其上的prepare()并使其准备就绪。也许尝试一个更精简的方法：

public class MyMain extends Activity implements MediaPlayer.OnCompletionListener { 

@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 

    //Set up the buttons 
    Button bmoney = (Button) findViewById(R.id.money); 
    bmoney.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      playSound(R.raw.money); 
     } 
    }); 

    Button bpants = (Button) findViewById(R.id.pants); 
    bpants.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      playSound(R.raw.pants); 
     }  
    }); 

    Button oath = (Button) findViewById(R.id.oath); 
    oath.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      playSound(R.raw.oath); 
     }  
    }); 

    Button tardis = (Button) findViewById(R.id.tardis); 
    tardis.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      playSound(R.raw.tardis); 
     }  
    }); 

    Button screwdriver = (Button) findViewById(R.id.screwdriver); 
    screwdriver.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      playSound(R.raw.screwdriver); 
     }  
    }); 

    Button alarm = (Button) findViewById(R.id.alarm); 
    alarm.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      playSound(R.raw.alarm); 
     }  
    }); 

    Button kame = (Button) findViewById(R.id.kame); 
    kame.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      playSound(R.raw.kame); 
     }  
    }); 

    Button card = (Button) findViewById(R.id.card); 
    card.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      playSound(R.raw.card); 
     }  

    }); 

    Button laugh = (Button) findViewById(R.id.laugh); 
    laugh.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      playSound(R.raw.laugh); 
     }  
    }); 

    Button him = (Button) findViewById(R.id.him); 
    him.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      playSound(R.raw.him); 
     }  
    }); 

    Button her = (Button) findViewById(R.id.her); 
    her.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      playSound(R.raw.her); 
     }  
    }); 

    Button hell = (Button) findViewById(R.id.hell); 
    hell.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      playSound(R.raw.hell); 
     }  
    }); 

    Button mocking = (Button) findViewById(R.id.mocking); 
    mocking.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      playSound(R.raw.mocking); 
     }  
    }); 

    Button god = (Button) findViewById(R.id.god); 
    god.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      playSound(R.raw.god); 
     }  
    }); 

    Button rasengan = (Button) findViewById(R.id.rasengan); 
    rasengan.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      playSound(R.raw.rasengan); 
     }  
    }); 

    Button rasen = (Button) findViewById(R.id.rasen); 
    rasen.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      playSound(R.raw.rasen); 
     }  
    }); 

    Button dalek = (Button) findViewById(R.id.dalek); 
    dalek.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      playSound(R.raw.dalek); 
     }  
    }); 

    Button sharingan = (Button) findViewById(R.id.sharingan); 
    sharingan.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      playSound(R.raw.sharingan); 
     }  
    }); 
} 

//Consolidate media playing to one location 
private void playSound(int resId) { 
    MediaPlayer mp = MediaPlayer.create(this, resId); 
    mp.setOnCompletionListener(this); 
    mp.start(); 
} 

//Completion listener method 
public void onCompletion(MediaPlayer mp) { 
    mp.release(); 
} 

}

这种方法将创建MediaPlayer实例，只在你需要它的时候播放声音。一旦完成，监听器可以释放资源以保持合理的内存占用。

您还可以通过在您的XML中使用android：onClick使所有按钮调用一个方法，然后使用基于按钮ID的正确ID调用playSound()来进一步简化此代码（除非您的定位1.5，课程）。

希望有帮助！

来源

2011-02-10 20:19:52 Devunwired

与一些机器人在音板上的Forceclose问题？

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