ViewHolder简洁写法,避免适配器中重复定义ViewHolder:
import android.util.SparseArray;
import android.view.View;
@SuppressWarnings({"unchecked"})
public class ViewFindUtils {
/**
* ViewHolder简洁写法,避免适配器中重复定义ViewHolder,减少代码量用法:
* <p/>
* <pre>
* if (convertView == null)
* {
* convertView = View.inflate(context, R.layout.ad_demo, null);
* }
* TextView tv_demo = ViewHolderUtils.get(convertView, R.id.tv_demo);
* ImageView iv_demo = ViewHolderUtils.get(convertView, R.id.iv_demo);
* </pre>
*/
public static <T extends View> T hold(View view, int id) {
SparseArray<View> viewHolder = (SparseArray<View>) view.getTag();
if (viewHolder == null) {
viewHolder = new SparseArray<View>();
view.setTag(viewHolder);
}
View childView = viewHolder.get(id);
if (childView == null) {
childView = view.findViewById(id);
viewHolder.put(id, childView);
}
return (T) childView;
}
/**
* 替代findviewById方法
*/
public static <T extends View> T find(View view, int id) {
return (T) view.findViewById(id);
}
}
来源:oschina
链接:https://my.oschina.net/u/2320057/blog/617581