相关疑难解决方法(0)

我目前正在尝试设计一个简单的应用程序,流媒体互联网广播电台.我有电台的URL,我正在设置媒体播放器

    MediaPlayer mediaPlayer = new MediaPlayer();
    try {
        mediaPlayer.setDataSource(URL);
    } catch (IllegalArgumentException e) {
        e.printStackTrace();
    } catch (SecurityException e) {
        e.printStackTrace();
    } catch (IllegalStateException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
    try {
        mediaPlayer.prepare();
    } catch (IllegalStateException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
    mediaPlayer.start();

模拟时程序没有崩溃,但没有播放,我收到以下错误:

start called in state 0

就在它下面

Error (-38,0)

有谁知道这意味着什么？

我已经阅读了一些有关这些状态错误的内容,但找不到任何适用于我的项目的内容.

即使是模拟器,我的设备也没有声音.

实际上,在"mMediaPlayer.create(this,musicIds [0]);"这一行中,eclipse告诉我两个选择:"使用'MediaPlayer'(声明类型)改变对静态的访问"或"添加@SuppressWarnings'静态访问' to on Create()".顺便说一句,我采取了eclipse的建议........但仍然无法正常工作.

PS我从其他项目(寻呼机)调用了一个包.

public void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setTitle(R.string.diff_title);
    setContentView(R.layout.title_layout);    


    viewFlow = (ViewFlow) findViewById(R.id.viewflow);
    DiffAdapter adapter = new DiffAdapter(this);
    viewFlow.setAdapter(adapter);  
    TitleFlowIndicator indicator = (TitleFlowIndicator) findViewById(R.id.viewflowindic);
    indicator.setTitleProvider(adapter);
    viewFlow.setFlowIndicator(indicator);


    //Set all views
    listView = (ListView) findViewById(R.id.listView1);
    listView.setAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1, listeStrings));
    final ImageView imv=(ImageView)findViewById(R.id.imv);
    imv.setImageResource(imageIds[0]);
    final ImageView pic = (ImageView)findViewById(R.id.Picture);
    pic.setImageResource(imageIds[0]);

    btnPlay = (ImageButton)findViewById(R.id.btnplay);
    btnPlay.setOnClickListener(this);

    btnNext = (ImageView)findViewById(R.id.imvnext);
    btnLast = (ImageView)findViewById(R.id.imvlast);        
    final TextView textview = (TextView)findViewById(R.id.textView2);
    textview.setText(listeStrings[0]);  
    seekBar = (SeekBar)findViewById(R.id.seekbar);
    //seekBar.setMax(mMediaPlayer.getDuration()); …