[英]how can i set selected value from alert dialog (single selection) on my list view item?
如何從我的列表視圖項上的警報對話框(單選)中設置選定的值?...我的場景是: - 我有帶有按鈕和文本視圖的列表視圖項 - 單擊我的列表視圖項中的按鈕,打開對話框 - 選擇對話框中單個選擇列表中的值 - 想要在我的列表視圖項內的 textview 中的對話框中顯示此選定值
這是我的代碼: 問題是:通過在對話框中設置在列表項視圖中更改的值,不會在上下滾動時持續存在。
public View getView(int position, View convertView, ViewGroup parent) {
final ViewHolder holder;
db = new DatabaseHandler(getContext());
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.activity_event_item, parent, false);
holder = new ViewHolder();
holder.x = (TextView) convertView.findViewById(R.id.x);
holder.y = (TextView) convertView.findViewById(R.id.y);
holder.b = (Button) convertView.findViewById(R.id.b);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
String s = x[position];
if (s != null){
holder.x.setText("setting text");
}
holder.b.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
selected = 0;
builder.setTitle("Select ").setSingleChoiceItems(array1, selected, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
selected = which;
}
})
.setPositiveButton("OK", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int id) {
value = array1[selected];
holder.y.setText(value + " ");
}
})
.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int id) {
}
});
builder.create();
builder.show();
}
});
return convertView;
}
我用這段代碼實現了同樣的目的
private void showDialoge(Context context, int postion) {
String[] items = {"Unpaid", " Paid "};
AlertDialog.Builder builder = new AlertDialog.Builder(context)
.setSingleChoiceItems(items, postion, null)
.setPositiveButton(R.string.ok_button_label, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
dialog.dismiss();
int selectedPosition = ((AlertDialog) dialog).getListView().getCheckedItemPosition();
// Do something useful withe the position of the selected radio button
}
});
AlertDialog dialog = builder.create();
dialog.show();
}
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