Gridview自定义适配器按钮onclick

Question

我的gridview自定义项目是一个图像按钮。我想单击图像按钮时更改图像按钮图像。您可以在我的自定义适配器类getView方法下面看到。但图像按钮图像不会更改。

ImageButton btn1; 

@Override 
public View getView(int position, View convertView, ViewGroup parent) { 

    View view = convertView; 

    if (view == null) { 

     LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 

view = inflater.inflate(R.layout.myItem, null); 


     btn1 = (ImageButton) view.findViewById(R.id.btn1); 

    } 


    btn1.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View v) { 
      // TODO Auto-generated method stub 

      btn1.setImageResource(R.id.image1); 

     } 
    }); 

    return view; 
} 

Answer 1

试试这种方式，希望这会帮助你解决你的问题。

public class CustomGridAdapter extends BaseAdapter { 

    private Context context; 
    private ArrayList<HashMap<String,Integer>> imagesList; 

    public CustomGridAdapter(Context context,ArrayList<HashMap<String,Integer>> imagesLis) { 
     this.context =context; 
     this.imagesList =imagesLis; 

    } 

    @Override 
    public int getCount() { 
     return imagesList.size(); 
    } 

    @Override 
    public Object getItem(int position) { 
     return imagesList.get(position); 
    } 

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

    @Override 
    public View getView(final int position, View convertView, ViewGroup parent) { 
     final ViewHolder holder; 

     if (convertView == null) { 
      holder  = new ViewHolder(); 
      convertView = LayoutInflater.from(context).inflate(R.layout.myItem, null); 
      holder.btn1 = (TextView) convertView.findViewById(R.id.btn1); 
      convertView.setTag(holder); 
     } else { 
      holder = (ViewHolder) convertView.getTag(); 
     } 

     holder.btn1.setImageResource(imagesList.get(position).get("normalImage")); 
     holder.btn1.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       ((ImageButton)v).setImageResource(imagesList.get(position).get("selectedImage")); 
      } 
     }); 
     return convertView; 
    } 

    static class ViewHolder { 
     ImageButton btn1; 
    } 
}