爲什麼發生此錯誤？ java.lang.RuntimeException：ImageLoader必須在使用前初始化配置

我已經從gitHub下載了一個ImageDownloader代碼（from Here）現在，當我嘗試從我的web服務下載圖像時，出現此運行時異常「ImageLoader must be init在使用前配置「。爲什麼發生此錯誤？ java.lang.RuntimeException：ImageLoader必須在使用前初始化配置

我無法弄清楚。

這我的適配器：

public class CustomAdapter extends BaseAdapter 
{ 
    private Context context; 
    private ArrayList<String> logo_URL; 

    private ListContent listContent; 
    private ArrayList< TeamDataClass> teamdata = null; 
    private ArrayList<EventDataClass> eventdata = null; 
    private DisplayImageOptions options; 
    private ImageLoader imageLoader; 

    public CustomAdapter(Context context,ArrayList<String> logo_URL,ArrayList<TeamDataClass> teamdata, ArrayList<EventDataClass> eventdata) 
    { 
     this.context = context; 
     this.logo_URL = logo_URL; 
     this.teamdata = teamdata; 
     this.eventdata = eventdata; 
     options = new DisplayImageOptions.Builder() 
     .showImageForEmptyUri(R.drawable.image_for_empty_url) 
     .cacheOnDisc() 
     .imageScaleType(ImageScaleType.EXACT) 
     .build(); 
     imageLoader= ImageLoader.getInstance(); 
    } 

    //@Override 
    public int getCount() 
    { 
     return teamdata.size()/2; 
    } 

    //@Override 
    public Object getItem(int arg0) 
    { 
     return arg0; 
    } 

    //@Override 
    public long getItemId(int arg0) 
    { 
     return arg0; 
    } 

    //@Override 
    public View getView(int arg0, View convertview, ViewGroup arg2) 
    { 
     LayoutInflater inflater = ((Activity) context).getLayoutInflater(); 
     if (convertview == null) 
     { 
      convertview = inflater.inflate(R.layout.custom_list_score, null); 
      listContent = new ListContent(); 
      listContent.team_logo2 = (ImageView) convertview.findViewById(R.id.team_logo2); 
      listContent.team_logo1 = (ImageView) convertview.findViewById(R.id.team_logo1); 
      listContent.progress_team1=(ProgressBar)convertview.findViewById(R.id.progress_team_logo1); 
      listContent.progress_team2=(ProgressBar)convertview.findViewById(R.id.progress_team_logo2); 

      convertview.setTag(listContent); 
     } 
     else 
     { 
      listContent = (ListContent) convertview.getTag(); 
     } 
     listContent.status.setText(eventdata.get(arg0).status); 
     int pos=arg0*2; 
     imageLoader.displayImage(logo_URL.get(pos),listContent.team_logo1, options,new ImageLoadingListener() 
     { 
      //@Override 
      public void onLoadingStarted() 
      { 
       listContent.progress_team1.setVisibility(View.VISIBLE); 
      } 

      //@Override 
      public void onLoadingFailed(FailReason failReason) 
      { 
       String message = null; 
       switch (failReason) 
       { 
        case IO_ERROR: 
         message = "Input/Output error"; 
         break; 
        case OUT_OF_MEMORY: 
         message = "Out Of Memory error"; 
         break; 
        case UNKNOWN: 
         message = "Unknown error"; 
         break; 
       } 
       Toast.makeText(context, message, Toast.LENGTH_SHORT).show(); 

       listContent.progress_team1.setVisibility(View.GONE); 
       listContent.team_logo1.setImageResource(android.R.drawable.ic_delete); 
      } 

      //@Override 
      public void onLoadingComplete(Bitmap loadedImage) 
      { 
       listContent.progress_team1.setVisibility(View.GONE); 
       Animation anim = AnimationUtils.loadAnimation(context, R.anim.fade_in); 
       listContent.team_logo1.setAnimation(anim); 
       anim.start(); 
      } 

      //@Override 
      public void onLoadingCancelled() 
      { 
       // Do nothing 
      } 

      public void onLoadingComplete() { 

      } 
     }); 
     imageLoader.displayImage(logo_URL.get(pos+1),listContent.team_logo2, options,new ImageLoadingListener() 
     { 
      //@Override 
      public void onLoadingStarted() 
      { 
       listContent.progress_team2.setVisibility(View.VISIBLE); 
      } 

      //@Override 
      public void onLoadingFailed(FailReason failReason) 
      { 
       String message = null; 
       switch (failReason) 
       { 
        case IO_ERROR: 
         message = "Input/Output error"; 
         break; 
        case OUT_OF_MEMORY: 
         message = "Out Of Memory error"; 
         break; 
        case UNKNOWN: 
         message = "Unknown error"; 
         break; 
       } 
       Toast.makeText(context, message, Toast.LENGTH_SHORT).show(); 

       listContent.progress_team2.setVisibility(View.GONE); 
       listContent.team_logo2.setImageResource(android.R.drawable.ic_delete); 
      } 

      //@Override 
      public void onLoadingComplete(Bitmap loadedImage) 
      { 
       listContent.progress_team2.setVisibility(View.GONE); 
       Animation anim = AnimationUtils.loadAnimation(context, R.anim.fade_in); 
       listContent.team_logo2.setAnimation(anim); 
       anim.start(); 
      } 

      //@Override 
      public void onLoadingCancelled() 
      { 
       // Do nothing 
      } 

      public void onLoadingComplete() { 

      } 
     }); 

     return convertview; 
    } 
    private class ListContent 
    { 
     ImageView team_logo1, team_logo2; 
     ProgressBar progress_team1,progress_team2; 
    } 
}

這是我的logcat：

FATAL EXCEPTION: main 
java.lang.RuntimeException: ImageLoader must be init with configuration before using 
at com.nostra13.universalimageloader.core.ImageLoader.displayImage(ImageLoader.java:164) 
at com.huskerit.score.CustomAdapter.getView(CustomAdapter.java:100) 
at android.widget.HeaderViewListAdapter.getView(HeaderViewListAdapter.java:220) 
at android.widget.AbsListView.obtainView(AbsListView.java:1554) 
at android.widget.ListView.measureHeightOfChildren(ListView.java:1288) 
at android.widget.ListView.onMeasure(ListView.java:1199) 
at android.view.View.measure(View.java:8313) 
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138) 
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1017) 
at android.widget.LinearLayout.measureHorizontal(LinearLayout.java:701) 
at android.widget.LinearLayout.onMeasure(LinearLayout.java:311) 
at android.view.View.measure(View.java:8313) 
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138) 
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1017) 
at android.widget.LinearLayout.measureVertical(LinearLayout.java:386) 
at android.widget.LinearLayout.onMeasure(LinearLayout.java:309) 
at android.view.View.measure(View.java:8313) 
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138) 
at android.widget.FrameLayout.onMeasure(FrameLayout.java:250) 
at android.view.View.measure(View.java:8313) 
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138) 
at android.widget.FrameLayout.onMeasure(FrameLayout.java:250) 
at android.view.View.measure(View.java:8313) 
at android.view.ViewRoot.performTraversals(ViewRoot.java:844) 
at android.view.ViewRoot.handleMessage(ViewRoot.java:1865) 
at android.os.Handler.dispatchMessage(Handler.java:99) 
at android.os.Looper.loop(Looper.java:123) 
at android.app.ActivityThread.main(ActivityThread.java:3687) 
at java.lang.reflect.Method.invokeNative(Native Method) 
at java.lang.reflect.Method.invoke(Method.java:507) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:842) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600) 
at dalvik.system.NativeStart.main(Native Method)

來源

2012-09-15 AndroidLearner

[Android - ImageLoader必須是初始配置在使用UIL之前]（http://stackoverflow.com/questions/17737858/android-imageloader-must-be-init-with-configuration-before-using-in-uil） – bummi

我在構造函數中添加這條線和工作對我來說...

imageLoader.init(ImageLoaderConfiguration.createDefault(context));

來源

2012-09-15 06:51:57 AndroidLearner

是的。這是對的。我沒有包含在我的構造函數中。 – rajeshlawrance

Cool Buddy它的工作 –

protected ImageLoader imageLoader; 

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

imageLoader = ImageLoader.getInstance(); 
imageLoader.init(ImageLoaderConfiguration.createDefault(this));

來源

2013-01-25 14:11:53 Quick123

完美....解決方案... !!! –

工作完美。老闆 –

爲什麼發生此錯誤？ java.lang.RuntimeException：ImageLoader必須在使用前初始化配置

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