Question

我在程序中访问run（）方法时遇到问题。朗姆酒方法根本没有得到关注。循环外部显示的日志消息正在显示，我得到一个带预设背景的空白屏幕。这是代码......

public class MusicListActivity extends Activity {
List<HashMap<String, String>> songNodeDet = new ArrayList<HashMap<String,String>>();
HashMap<?,?>[] songNodeWeb; 
XMLRPCClient client;
String logInSess;
ArrayList<String> paths=new ArrayList<String>();
public ListAdapter adapter ;
Object[] websongListObject;
List<SongsList> SongsList=new ArrayList<SongsList>();
Runnable r;
ProgressDialog p;
ListView lv;

@Override
public void onCreate(Bundle si){
    super.onCreate(si);

    setContentView(R.layout.openadiuofile);
    lv=(ListView)findViewById(R.id.list1);
    r=new Runnable(){

        public void run(){
            try{

                getSongs();
                list();
                Log.d("handler","handler");  
                removeDialog(0);
                p.dismiss();


            } catch (MalformedURLException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (XMLRPCException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    };      
        Log.e("***","process over");
}

@Override
protected void onResume() {
    // TODO Auto-generated method stub
      super.onResume();

}

    public void webObjectList(Object[] songListObj) throws XMLRPCException{
    songNodeWeb = new HashMap<?,?>[songListObj.length];


    for(int i=0;i<songListObj.length;i++){ 
        songNodeWeb[i]=(HashMap<?,?>)songListObj[i];
        String nodeid=(String) songNodeWeb[i].get("nid");

        Log.e("Song",i+"completed");
        HashMap<String,String> nData=new HashMap<String,String>();
        nData.put("nid",nodeid);        
        Object nodeget=client.call("node.get",nodeid);
        HashMap<?,?> songNode=(HashMap<?,?>)nodeget;
        String title=(String) songNode.get("title");
        String album=(String) songNode.get("album");    
        String artist=(String) songNode.get("artist");

        nData.put("title", title);
        nData.put("album", album);
        nData.put("artist", artist);

        Object[]  songObject=(Object[])songNode.get("title_format");
        HashMap<?,?>[] songDetails=new HashMap<?,?>[songObject.length];
        songDetails[0]=(HashMap<?, ?>)songObject[0];
        String path=(String) songDetails[0].get("filepath");


        if(path.contains(" ")){
            path=path.replace(" ", "%20");
        }

        String songPath="http://www.gorinka.com/"+path;
        paths.add(songPath);
        nData.put("path", songPath);
        Log.e("my path",path);
        SongsList songsList=new SongsList(title, album, artist,songPath,songPath);
        SongsList.add(i,songsList);
        songNodeDet.add(i,nData);
    }

    Log.e("paths values",paths.toString());     
    handler.sendEmptyMessage(0);
}

public void list()
  {      Log.d("#####","#####");
     LayoutInflater inflater=getLayoutInflater();
        String[] from={};
        int[] n={};
     adapter=new SongsAdapter(getApplicationContext(),songNodeDet,R.layout.row,from,n,inflater);
     lv.setAdapter(adapter);
  }

public void getSongs() throws MalformedURLException, XMLRPCException
{  
    String ur="http://www.gorinka.com/";
    URL u=new URL(ur);
     client = new XMLRPCClient(u);      
     websongListObject =(Object[]) client.call("nodetype.get","titles");
     webObjectList(websongListObject);
     Log.d("webObjectList","webObjectList");
     runOnUiThread(r);
}
private Handler handler = new Handler() {
    public void handleMessage(Message msg){
       Log.d("handler","handler");        
      removeDialog(0);
      p.dismiss();
     }

}; }

我试图通过简单的适配器访问字符串......这是适配器的代码......

public class SongsAdapter extends SimpleAdapter{
static List<HashMap<String,String>> songsList;
Context context;
LayoutInflater inflater;
public SongsAdapter(Context context,List<HashMap<String,String>> imgListWeb,int layout,String[] from,int[] to,LayoutInflater inflater) {
    super(context,songsList,layout,from,to);
    this.songsList=songsList;
    this.context=context;
    this.inflater=inflater;
    // TODO Auto-generated constructor stub
}
@Override
public View getView(int postition,View convertView,ViewGroup parent)throws java.lang.OutOfMemoryError{
    try {
    View v = ((LayoutInflater) inflater).inflate(R.layout.row,null);
    ImageView images=(ImageView)v.findViewById(R.id.image);
    TextView tvTitle=(TextView)v.findViewById(R.id.text1);
    TextView tvAlbum=(TextView)v.findViewById(R.id.text2);
    TextView tvArtist=(TextView)v.findViewById(R.id.text3);
    HashMap<String,String> songsHash=songsList.get(postition);
    String path=songsHash.get("path");
    String title=songsHash.get("title");
    String album=songsHash.get("album");
    String artist=songsHash.get("artist");
    String imgPath=path;    
    final ImageView imageView = (ImageView) v.findViewById(R.id.image);
    AsyncImageLoaderv asyncImageLoader=new AsyncImageLoaderv();
    Bitmap cachedImage = asyncImageLoader.loadDrawable(imgPath, new AsyncImageLoaderv.ImageCallback() {
        public void imageLoaded(Bitmap imageDrawable, String imageUrl) {
            imageView.setImageBitmap(imageDrawable);
        }
        });
    imageView.setImageBitmap(cachedImage);
    tvTitle.setText(title);
    tvAlbum.setText(album);
    tvArtist.setText(artist);
    return v;
    }
    catch(Exception e){
        Log.e("error",e.toString());
    }
    return null;
}
public static Bitmap loadImageFromUrl(String url) {
    InputStream inputStream;Bitmap b;
try {
    inputStream = (InputStream) new URL(url).getContent();
    BitmapFactory.Options bpo=  new BitmapFactory.Options();
    bpo.inSampleSize=2;
     b=BitmapFactory.decodeStream(inputStream, null,bpo );
     return b;
} catch (IOException e) {
        throw new RuntimeException(e);
    }
}

}

Plz帮助我确定我的问题的问题和解决方案......非常需要......

Answer 1

首先，我建议你使用AsyncTask。

这里的错误是您正在创建Runnable但未将其传递给new Thread() 你错过了这样的东西：

Thread heavyLoader = new Thread(r);
heavyLoader.start();

在android中访问run（）的问题

1 个答案: