在播放音頻文件

Question

我已經從服務器下載音頻文件的Android問題並保存它使用

/data/data/packagename/sounds/filename.mp3 

然後，如果我發揮使用

.MediaPlayer mp= new MediaPlayer(); 
      try { 
       mp.setDataSource(PATH+"/"+fileName); 
      } catch (IllegalArgumentException e) { 
       // TODO Auto-generated catch block 
       e.printStackTrace(); 
      } catch (IllegalStateException e) { 
       // TODO Auto-generated catch block 
       e.printStackTrace(); 
      } catch (IOException e) { 
       // TODO Auto-generated catch block 
       e.printStackTrace(); 
      } 

      mp.start(); 

音頻但它顯示了一個錯誤

MediaPlayer:start called in state 2 
MediaPlayer:Error(-38,0) 
MediaPlayer:Error(-38,0) 

它有什麼問題我搜索了很多關於這個，但沒有解決方案，請提出任何解決方案

Answer 1

與此代碼嘗試，

public void audioPlayer(String path, String fileName){ 
    //set up MediaPlayer  
    MediaPlayer mp = new MediaPlayer(); 

    try { 
     mp.setDataSource(path+"/"+filename.mp3); 
    } catch (IllegalArgumentException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } catch (IllegalStateException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } catch (IOException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } 
    try { 
     mp.prepare(); 
    } catch (IllegalStateException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } catch (IOException e) { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } 
    mp.start(); 
}