在我的自定义适配器 getView
方法中“缓存”我的 convertView
时遇到问题。当使用像
if (convertView == null) ...
我的 verifiedView
有时会显示,即使用户未经过验证。当删除 if 结构并仅使用 row = convertView;
时,一切都按预期工作。知道如何解决这个问题吗?
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View row;
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) context.getSystemService( Context.LAYOUT_INFLATER_SERVICE);
row = inflater.inflate(resource, parent, false);
} else {
row = convertView;
}
UserProfile user = users.get(position);
// get views
TextView usernameView = (TextView) row.findViewById(R.id.username);
ImageView avatarView = (ImageView) row.findViewById(R.id.avatar);
ImageView verifiedView = (ImageView) row.findViewById(R.id.verified);
// check if user has an custom avatar
if (!user.getAvatar().isEmpty()) {
// now check if we already downloaded the avatar
InputStream is = AvatarHandler.getAvatar(this.context, user.getID());
if (is != null) {
Bitmap bmp = BitmapFactory.decodeStream(is);
System.out.println("Avatar already downloaded.");
avatarView.setImageBitmap(bmp);
}
}
else {
// set default avatar
avatarView.setImageResource(R.drawable.avatar);
}
// set username
usernameView.setText(user.getName());
// set verified
if (user.isVerified())
verifiedView.setVisibility(View.VISIBLE);
return row;
}
最佳答案
当用户未验证时,您应该隐藏verifiedView
:
// set verified
if (user.isVerified()) {
verifiedView.setVisibility(View.VISIBLE);
} else {
verifiedView.setVisibility(View.GONE);
}
关于android - ArrayAdater getView "caching"转换 View ,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/23520218/