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你好我正在做一個應用程序,其中按下了一個按鈕,AlertDialog窗口彈出一個TimePicker。但它在一個片段,所以AppCompatActivity不會這樣做。AlertDialog不工作在片段
片段本身:
public class time_change extends Fragment implements TimePickerFragment.TimeDialogListener {
private static final String DIALOG_TIME = "MainActivity.TimeDialog";
private View v;
private Button timePickerAlertDialog;
private ImageButton back;
@Override
@Nullable
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
v = inflater.inflate(R.layout.pamokos, container, false);
timePickerAlertDialog = (Button) v.findViewById(R.id.alert_dialog_time_picker);
timePickerAlertDialog.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
TimePickerFragment dialog = TimePickerFragment.newInstance();
dialog.show(getActivity().getFragmentManager(), "TimePickerFragment");
}
});
back = (ImageButton) v.findViewById(R.id.back_btn1);
back.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Pamokos fr = new Pamokos();
time_change fr2 = new time_change();
android.app.FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.activity_frag, fr);
fragmentTransaction.remove(fr2);
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();
}
});
return v;
}
@Override
public void onFinishDialog(String time) {
Toast.makeText(getActivity(), "Selected Time : " + time, Toast.LENGTH_SHORT).show();
}
}
,但它顯示了在
dialog.show(getActivity().getFragmentManager(), "TimePickerFragment");
一個錯誤說 「無法解析法 '秀(android.app.FragmentManager,java.lang.String中)'」
我很迷茫。
我已經更換了,但現在只有getSupportFragmentManager()變爲全紅的,而不是紅色的下劃線,也提示「無法解析法‘getSupportFragmentManager()’」 – Sajev
取代android.app.DialogFragment與導入android.support.v4.app.DialogFragment; –
是的,我已經取代了進口,但同樣的錯誤 – Sajev