Android Java Time Picker Dialog
问题 hey I am trying to make a TimepickerDialog. But the app crashes soon as I press the Set Time button. Here is the code. MainActivity: package com.wifitimer; import java.text.DateFormat; import java.util.Calendar; import android.app.Activity; import android.app.TimePickerDialog; import android.os.Bundle; import android.widget.TimePicker; public class MainActivity extends Activity { DateFormat formatDateTime=DateFormat.getDateTimeInstance(); Calendar dateTime=Calendar.getInstance(); @Override