美好的一天,我将第一个承认,我根本没有使用片段的经验,只是在学习,所以请多多包涵。正如标题所说,我试图将 TimePickerDialog 的结果设置为我的活动中的一个按钮,但没有成功。当我单击开始按钮时,我看不到通常的 TimePickerDialog,我看到的只是屏幕中间的一个小空对话框。那么请问我做错了什么?谢谢你。
这是我的代码:
时间对话:
public class TimeDialog extends DialogFragment {
private int mHour;
private int mMinute;
public TimeDialog(){
}
public static TimeDialog newInstance(int title){
TimeDialog frag = new TimeDialog();
Bundle args = new Bundle();
args.putInt("title", title);
frag.setArguments(args);
return null;
}
private TimePickerDialog.OnTimeSetListener mTimeSetListener = new TimePickerDialog.OnTimeSetListener() {
@Override
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
mHour = hourOfDay;
mMinute = minute;
//updateDisplay();
}
/*private void updateDisplay() {
View v = getActivity().getLayoutInflater().inflate(R.layout.add_resp, null);
Button start = (Button)v.findViewById(R.id.start_time_button_id);
start.setText(new StringBuilder().append(mHour).append(":").append(mMinute).toString());
}*/
};
@Override
public Dialog onCreateDialog(Bundle savedInstancestate){
return new TimePickerDialog(getActivity(), mTimeSetListener, mHour, mMinute, false);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState){
View v = inflater.inflate(R.layout.add_resp, container, false);
Button start = (Button)v.findViewById(R.id.start_time_button_id);
start.setText(new StringBuilder().append(mHour).append(":").append(mMinute).toString());
return v;
}
}
这是我从活动中调用它的地方:
public class AddResp extends Activity implements OnClickListener {
EditText text_title;
Button start;
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.add_resp);
text_title = (EditText)findViewById(R.id.title_text_id);
start = (Button)findViewById(R.id.start_time_button_id);
start.setOnClickListener(this);
}
@Override
public void onClick(View view) {
int selection = view.getId();
switch(selection){
case R.id.start_time_button_id:
DialogFragment newFragment = new DialogFragment();
newFragment.show(getFragmentManager(), "dialog");
break;
}
}
}