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當我點擊第一個按鈕只點擊一個按鈕它設置按鈕背景確定。但當我向下滾動時發現問題,我發現更多的按鈕被隨機地改變看起來像圖片。Android:列表視圖更改按鈕文本上clilck
查看圖片 here。代碼
部分: - ContactSug_Adapter
public class ContactSug_Adapter extends ArrayAdapter {
List list = new ArrayList();
ImageLoader imgLoader = new ImageLoader(getContext());
private Context context;
public ContactSug_Adapter(Context context, int resource) {
super(context, resource);
}
@Override
public void add(Object object) {
super.add(object);
list.add(object);
}
@Override
public int getCount() {
return super.getCount();
}
@Override
public Object getItem(int position) {
return this.list.get(position);
}
@Override
public View getView(final int position, View convertView, final ViewGroup parent) {
View row;
row = convertView;
final ContactHolder contactHolder;
if (row == null) {
LayoutInflater layoutInflater = (LayoutInflater) this.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
row = layoutInflater.inflate(R.layout.row, parent, false);
contactHolder = new ContactHolder();
contactHolder.tx_id = (TextView) row.findViewById(R.id.usersName2);
contactHolder.tx_name = (TextView) row.findViewById(R.id.usersName);
contactHolder.sug_add = (Button) row.findViewById(R.id.sug_id);
row.setTag(contactHolder);
} else {
contactHolder = (ContactHolder) row.getTag();
}
final Contacts_Sug contacts = (Contacts_Sug) this.getItem(position);
contactHolder.image_tx.setImageResource(R.mipmap.ic_launcher);
contactHolder.tx_id.setText(contacts.getId());
contactHolder.tx_name.setText(contacts.getName());
contactHolder.sug_add.setTag(position);
contactHolder.sug_add.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
contactHolder.sug_add.setText("Selected");
}
});
return row;
}
public class ContactHolder {
TextView tx_id, tx_name,loadId;
ImageView image_tx;
public Button sug_add;
}/********* act
列表視圖,回收他們的意見,有時當你向下滾動,在'row'不會是空的,因爲它是被重用。在這種情況下,您正在使用'contactHolder =(ContactHolder)row.getTag();'''''我會使用'position'參數來跟蹤狀態的舊視圖中的'contactHolder' – TychoTheTaco