对于我的 android 应用程序,我正在使用 ViewHolder 模式。每当我单击列表视图中的图像视图时,该行都会更新,但其他行也会更新。
每当我单击“喜欢”按钮时,其他图像也会收到用户喜欢的图像。这怎么可能?
这是我的查看器代码:
public class MyAdapter extends ArrayAdapter<MyModel> {
Context context;
int layoutResourceId;
List<MyModel> data = null;
public MyAdapter(Context context, int layoutResourceId,
List<MyModel> data) {
super(context, layoutResourceId, data);
this.layoutResourceId = layoutResourceId;
this.context = context;
this.data = data;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View row = convertView;
final BlockHolder holder;
if (row == null) {
LayoutInflater inflater = ((Activity) context).getLayoutInflater();
row = inflater.inflate(layoutResourceId, parent, false);
holder = new BlockHolder();
holder.imgIcon = (ImageView) row.findViewById(R.id.imgIcon);
holder.totalVotes = (TextView) row.findViewById(R.id.totalVotes);
holder.likeIcon = (ImageView) row.findViewById(R.id.likeIcon);
holder.dislikeIcon = (ImageView) row.findViewById(R.id.dislikeIcon);
holder.saveIcon = (ImageView) row.findViewById(R.id.saveIcon);
row.setTag(holder);
} else {
holder = (BlockHolder) row.getTag();
}
MyModel myBlock = data.get(position);
ImageLoader.getInstance().displayImage(myBlock.getImage(),
holder.imgIcon);
final int totalLikes = myBlock.getLikes() - myBlock.getDislikes();
holder.totalVotes.setText(totalLikes + " likes");
final ImageView like = holder.likeIcon;
holder.likeIcon.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// ALSO UPDATES OTHER VIEWS...
holder.likeIcon.setBackgroundResource(R.drawable.thumbs_up_mouse);
}
});
return row;
}
private static class BlockHolder{
ImageView imgIcon;
TextView totalVotes;
ImageView dislikeIcon;
ImageView likeIcon;
ImageView saveIcon;
}