列表在BaseAdapter上显示错误的基址

Question

MyAdapter是BaseAdapter。它如下 部分：

@Override 
public View getView(int position, View convertView, ViewGroup parent) { 
ViewTag viewTag; 
if(convertView == null) { 
convertView = myInflater.inflate(R.layout.myrow, null); 
viewTag = new ViewTag((ImageView)convertView.findViewById(R.id.myicon), (TextView)convertView.findViewById(R.id.mytext)); 
convertView.setTag(viewTag); 
} 
else { 
viewTag = (ViewTag) convertView.getTag(); 
} 
viewTag.mytext.setText(MyTitle[position]); 
if(Icon[position].equals("Yes")) { 
viewTag.myicon.setVisibility(View.VISIBLE); 
} 
else { 
viewTag.myicon.setVisibility(View.INVISIBLE); 
} 
} 
class ViewTag { 
ImageView myicon; 
TextView mytext; 
public ViewTag(ImageView iv1, TextView tv1) { 
this.myicon = iv1; 
this.mytext = tv1; 
} 
} 

而且在活动如下呼吁：

private Runnable updateRunnable = new Runnable() { 
public void run() { 
MyAdapter.notifyDataSetChanged(); 
handler.postDelayed(updateRunnable, 1000); 
} 
}; 

为什么图标显示错误？与Icon数组不同。 Icon arrar始终只是“是”。 所以列表一次只能显示一个图标。 但有时会显示多个。 如何修改它？

Answer 1

您可以执行此以下方式： -

package com.CommonMethod.Activity; 

import android.app.Activity; 
import android.content.Context; 
import android.os.Bundle; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.BaseAdapter; 
import android.widget.ImageView; 
import android.widget.LinearLayout; 
import android.widget.ListView; 

public class ListViewDemo extends Activity { 
    ListView LS; 
    LayoutInflater Linflater; 
    String _StrError[] = new String[] { "Yes", "No", "Yes", "No", "No", "Yes", 
      "Yes", "No", "Yes", "No" }; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.listviewdemo); 
     LS = (ListView) findViewById(R.id.LSOne); 

     Linflater = (LayoutInflater) this 
       .getSystemService(Context.LAYOUT_INFLATER_SERVICE); 

     LS.setAdapter(new ListAdapter(this)); 
    } 

    public class ListAdapter extends BaseAdapter { 

     public ListAdapter(Context con) { 

     } 

     @Override 
     public int getCount() { 
      // TODO Auto-generated method stub 
      return 10; 
     } 

     @Override 
     public Object getItem(int position) { 
      // TODO Auto-generated method stub 
      return null; 
     } 

     @Override 
     public long getItemId(int position) { 
      // TODO Auto-generated method stub 
      return 0; 
     } 

     @Override 
     public int getViewTypeCount() { 
      // TODO Auto-generated method stub 
      return 10; 
     } 

     @Override 
     public int getItemViewType(int position) { 
      // TODO Auto-generated method stub 
      return position; 
     } 

     @Override 
     public View getView(int position, View convertView, ViewGroup parent) { 
      View ReturnView = convertView; 
      int _intPostion = getItemViewType(position); 
      ViewHolder Holder = Holder = new ViewHolder(); 
      if (ReturnView == null) { 
       ReturnView = Linflater.inflate(R.layout.rawlistview, null); 
       Holder.LL = (LinearLayout) ReturnView.findViewById(R.id.LLOne); 
       Holder.IV = (ImageView) ReturnView 
         .findViewById(R.id.imageView1); 
       if (_StrError[_intPostion].equalsIgnoreCase("Yes")) { 

        Holder.IV.setBackgroundResource(R.drawable.ic_launcher); 
       } else { 

        Holder.IV.setBackgroundResource(R.drawable.logo); 
       } 

       ReturnView.setTag(Holder); 

      } else { 
       Holder = (ViewHolder) ReturnView.getTag(); 
       ReturnView.setTag(Holder); 
      } 
      return ReturnView; 
     } 

     public class ViewHolder { 

      LinearLayout LL; 
      ImageView IV; 
     } 

    } 
}