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我有一個按鈕,單擊它時會彈出一個選擇列表對話框。在對話框中做出選擇後,我希望當前按鈕上的文本從(例如)「選擇水果」更改爲用戶在對話框中選擇的文本。用從對話框中選擇的文本替換按鈕文本
這是我到目前爲止有:
public class PickFruitFragment extends DialogFragment {
private Button mPickFruitButton;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_pickfruit, container, false);
mPickFruitButton = (Button) rootView.findViewById(R.id.pick_fruit_button);
mPickFruitButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
openDialog(v);
}
});
return rootView;
}
public void openDialog(View v) {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setTitle(R.string.pick_fruit_title);
builder.setItems(R.array.fruits_array, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
builder.setNegativeButton("Cancel",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
AlertDialog alert = builder.create();
alert.show();
}
}
只有我在我的XML現在就是該按鈕:
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/pick_fruit_button"
android:id="@+id/pick_fruit_button"
android:layout_below="@android:id/empty"
android:layout_centerHorizontal="true"
android:layout_marginTop="51dp" />
看起來你很好。具體問題是什麼? – codeMagic 2014-12-02 19:27:35
我只是不知道下一步要做什麼來改變按鈕文本,但@布魯斯的方法爲我工作 – kkl260 2014-12-02 20:24:56