我有2个TextView,我可以从中调用时间选择器。但我无法弄清楚从哪个TextBox中调用时间Picker。 以下是Activity的代码snippset:
case R.id.tv_to_night:
// show the time picker dialog
TimePickerFragment newFragmentNight = new TimePickerFragment();
newFragmentNight.show(getSupportFragmentManager(), "timePicker to");
break;
case R.id.tv_from_night:
// show the time picker dialog
TimePickerFragment newFragment = new TimePickerFragment();
newFragment.show(getSupportFragmentManager(), "timePicker from");
break;
在这里,我想知道从哪个TextBox得到时间:
public void onTimePicked(Calendar time) {
if(depending from were it was called)
tv_from_night.setText(DateFormat.format("h:mm a", time));
else
tv_to_night.setText(DateFormat.format("h:mm a", time));
}
TimePickerFragment
import android.app.Activity;
import android.app.Dialog;
import android.app.TimePickerDialog;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.text.format.DateFormat;
import android.widget.TimePicker;
import java.util.Calendar;
public class TimePickerFragment extends DialogFragment implements
TimePickerDialog.OnTimeSetListener {
private TimePickedListener mListener;
public Dialog onCreateDialog(Bundle savedInstanceState) {
// use the current time as the default values for the picker
final Calendar c = Calendar.getInstance();
int hour = c.get(Calendar.HOUR_OF_DAY);
int minute = c.get(Calendar.MINUTE);
// create a new instance of TimePickerDialog and return it
return new TimePickerDialog(getActivity(), this, hour, minute,
DateFormat.is24HourFormat(getActivity()));
}
@Override
public void onAttach(Activity activity) {
// when the fragment is initially shown (i.e. attached to the activity),
// cast the activity to the callback interface type
super.onAttach(activity);
try {
mListener = (TimePickedListener) activity;
} catch(ClassCastException e) {
throw new ClassCastException(activity.toString()
+ " must implement " + TimePickedListener.class.getName());
}
}
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
// when the time is selected, send it to the activity via its callback
// interface method
Calendar c = Calendar.getInstance();
c.set(Calendar.HOUR_OF_DAY, hourOfDay);
c.set(Calendar.MINUTE, minute);
mListener.onTimePicked(c);
}
public static interface TimePickedListener {
public void onTimePicked(Calendar time);
}
}
答案 0 :(得分:2)
<强>解决方案强>
的活动:
case R.id.tv_to_night:
TimePickerFragment newFragmentNight = TimePickerFragment.newInstance(TO_TIME_PICKER_ID);
newFragmentNight.show(getSupportFragmentManager(), "timePicker");
break;
case R.id.tv_from_night:
TimePickerFragment newFragment = TimePickerFragment.newInstance(FROM_TIME_PICKER_ID);
newFragment.show(getSupportFragmentManager(), "timePicker");
break;
在这里,您可以获得id:
的时间public void onTimePicked(Calendar time, int id) {
Log.i("TimePicker", "Time picker called from id " + id);
switch(id) {
case FROM_TIME_PICKER_ID:
// do thomething
break;
case TO_TIME_PICKER_ID:
// do thomething
break;
}
}
TimePickerFragment:
import android.app.Activity;
import android.app.Dialog;
import android.app.TimePickerDialog;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.text.format.DateFormat;
import android.widget.TimePicker;
import java.util.Calendar;
public class TimePickerFragment extends DialogFragment implements
TimePickerDialog.OnTimeSetListener {
private int mId;
private TimePickedListener mListener;
static TimePickerFragment newInstance(int id) {
Bundle args = new Bundle();
args.putInt("picker_id", id);
TimePickerFragment fragment = new TimePickerFragment();
fragment.setArguments(args);
return fragment;
}
public Dialog onCreateDialog(Bundle savedInstanceState) {
// use the current time as the default values for the picker
final Calendar c = Calendar.getInstance();
int hour = c.get(Calendar.HOUR_OF_DAY);
int minute = c.get(Calendar.MINUTE);
mId = getArguments().getInt("picker_id");
// create a new instance of TimePickerDialog and return it
return new TimePickerDialog(getActivity(), this, hour, minute,
DateFormat.is24HourFormat(getActivity()));
}
@Override
public void onAttach(Activity activity) {
// when the fragment is initially shown (i.e. attached to the activity),
// cast the activity to the callback interface type
super.onAttach(activity);
try {
mListener = (TimePickedListener) activity;
} catch(ClassCastException e) {
throw new ClassCastException(activity.toString()
+ " must implement " + TimePickedListener.class.getName());
}
}
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
// when the time is selected, send it to the activity via its callback
// interface method
Calendar c = Calendar.getInstance();
c.set(Calendar.HOUR_OF_DAY, hourOfDay);
c.set(Calendar.MINUTE, minute);
if(mListener != null)
mListener.onTimePicked(c, mId);
}
public static interface TimePickerDialogListener {
public void onTimeSet(int id, TimePicker view, int hourOfDay, int minute);
}
public static interface TimePickedListener {
public void onTimePicked(Calendar time, int id);
}
}