Android Listview增加所选索引的大小
您好,我对listview有问题。我想在listview中扩展所选图像的大小,例如,我有一个listview,当我单击一个项目时,它的大小会比listview中的其他行大,我的onitemclick listner示例代码是Android Listview增加所选索引的大小,android,android-listview,Android,Android Listview,您好,我对listview有问题。我想在listview中扩展所选图像的大小,例如,我有一个listview,当我单击一个项目时,它的大小会比listview中的其他行大,我的onitemclick listner示例代码是 @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { if(civ!=null){
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
if(civ!=null){
civ.setVisibility(View.VISIBLE);
}
civ = (CustomImageView)view.findViewById(R.id.civ_shelfBook_BookImage);
LayoutParams params = (LayoutParams) civ.getLayoutParams();
params.height = 0;
params.width = 0;
civ.setLayoutParams(params);
updateView(position);
DetailActivity.shelfID = civ.getShelfID();
DetailActivity.currentlySelected =position;
}
@覆盖
public void onItemClick(AdapterView父视图、视图、整型位置、,
长id){
如果(civ!=null){
civ.setVisibility(视图可见);
}
civ=(CustomImageView)view.findViewById(R.id.civ\u shelfBook\u BookImage);
LayoutParams params=(LayoutParams)civ.getLayoutParams();
参数高度=0;
参数宽度=0;
civ.setLayoutParams(参数);
更新视图(位置);
DetailActivity.shelfID=civ.getShelfID();
DetailActivity.currentlySelected=位置;
}
创建自定义listview适配器,并在getView
方法中执行以下操作:
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if(convertView == null) {
holder = new ViewHolder();
convertView = mLayoutInflater.inflate(R.layout.my_layout, parent, false);
holder.image = (ImageView)convertView.findViewById(R.id.image);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.image.setImageResource(R.drawable.image));
if(position == selectedPosition) {
convertView.setLayoutParams(MATCH_PARENT);// Set value as required
// Change row and image size here
} else {
convertView.setLayoutParams(WRAP_CONTENT);
}
return convertView;
}
private static class ViewHolder {
ImageView image;
}
尝试此操作使用未找到此ViewHolder类型此操作不全面不足以在适配器中从何处获取selectedPosition变量?