我有一个图像按钮和一个图像视图。我试图获得悬停主题,就像用户单击某个项目时,会在项目上悬停图像,这意味着他检查了该项目。我的XML:当视图重新加载到适配器时,图像变得不见了
布局1:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal" >
<ImageButton
android:id="@+id/fetchedImageObj"
android:layout_width="wrap_content"
android:layout_height="200dp"
android:layout_weight="1"
android:scaleType="centerInside"
android:src="@drawable/test"
android:background="@drawable/image_selector"
android:clickable="true"
android:padding="0dp"
/>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="@+id/hoverImage"
android:layout_width="fill_parent"
android:layout_height="200dp"
android:scaleType="centerInside"
android:src="@drawable/correct"
android:visibility="gone"/>
</RelativeLayout>
这是我的适配器上我试图做任务。但whenerver我选择一个项目,向下滚动消失或切换到其他对象的问题
适配器:
public class FetchItemAdapter extends BaseAdapter {
private Activity myContext;
private LayoutInflater inflater;
public FetchModel fetchModel;
private boolean check_click=false;
public FetchItemAdapter(Activity context,FetchModel fetchModel)
{
this.myContext=context;
inflater = context.getLayoutInflater();
this.fetchModel = fetchModel;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return this.fetchModel.images.size();
}
@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;
}
private static class ViewHolder {
ImageButton fetchedImageObj;
ImageView selection;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
System.out.println("get View");
final ViewHolder viewHolder = new ViewHolder();
convertView = inflater.inflate(com.yolove.R.layout.fetched_images_row,null);
//viewHolder = new ViewHolder();
viewHolder.fetchedImageObj = (ImageButton) convertView.findViewById(com.yolove.R.id.fetchedImageObj);
viewHolder.selection=(ImageView)convertView.findViewById(com.yolove.R.id.hoverImage);
convertView.setTag(viewHolder);
ImageLoader.getInstance().displayImage(fetchModel.images.get(position).imageurl,viewHolder.fetchedImageObj);
viewHolder.fetchedImageObj.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(check_click==false)
{
viewHolder.selection.setVisibility(View.VISIBLE);
check_click=true;
}
else
{
viewHolder.selection.setVisibility(View.GONE);
check_click=false;
}
}
});
return convertView;
}
}
我已经作出了最终的持有人得到viewholder.selection对象。
为什么投票? – Fay007 2015-02-09 08:56:24
你应该使用查看持有人模式获取视图 – 2015-02-09 09:19:01
什么是模式? – Fay007 2015-02-09 09:20:47