0
嗨,目前我正在尝试在我的列表适配器内设置一个按钮。该按钮的想法是,它从两个编辑文本中抓取一组值,一个是小时,另一个是分钟值,然后将其设置为日历和闹钟。应用程序达到特定时间后,它应该发送一个通知给用户,但目前它会在按下按钮时立即发送通知,而不是等待所需的时间,任何人都可以发现我的错误?在特定时间发送通知日历
convertView = LayoutInflater.from(getContext()).inflate(R.layout.custom_row_contact_number, null);
alarmManager = (AlarmManager) convertView.getContext().getSystemService(Context.ALARM_SERVICE);
myCalendar = Calendar.getInstance();
year_x = myCalendar.get(Calendar.YEAR);
month_x = myCalendar.get(Calendar.MONTH);
day_x = myCalendar.get(Calendar.DAY_OF_MONTH);
receiver = new Intent(convertView.getContext(), Alarm_Reciever.class);
Button btnSendMessage = (Button)convertView.findViewById(R.id.btnSendMessage);
btnSendMessage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
int hourValue = Integer.valueOf(editHours.getText().toString());
int minutevalue = Integer.valueOf(editMinutes.getText().toString());
Log.i("hour", Integer.toString(hourValue));
myCalendar.set(Calendar.HOUR_OF_DAY,hourValue);
myCalendar.set(Calendar.MINUTE, minutevalue);
pendingIntent = PendingIntent.getBroadcast(v.getContext(), 0, receiver, PendingIntent.FLAG_UPDATE_CURRENT);
alarmManager.set(AlarmManager.RTC_WAKEUP,myCalendar.getTimeInMillis(),pendingIntent);
}
});
}
另外如果我将下面的代码,在OnCreate我留下
alarmManager = (AlarmManager) convertView.getContext().getSystemService(Context.ALARM_SERVICE);
myCalendar = Calendar.getInstance();
year_x = myCalendar.get(Calendar.YEAR);
month_x = myCalendar.get(Calendar.MONTH);
day_x = myCalendar.get(Calendar.DAY_OF_MONTH);
receiver = new Intent(convertView.getContext(), Alarm_Reciever.class);
与下面的代码,但我收到一条错误
显示java.lang.NullPointerException:试图调用虚拟方法'void java.util.Calendar.set(int,int)'在空对象上引用
Button btnSendMessage = (Button)convertView.findViewById(R.id.btnSendMessage);
btnSendMessage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
int hourValue = Integer.valueOf(editHours.getText().toString());
int minutevalue = Integer.valueOf(editMinutes.getText().toString());
Log.i("hour", Integer.toString(hourValue));
myCalendar.set(Calendar.HOUR_OF_DAY,hourValue);
myCalendar.set(Calendar.MINUTE, minutevalue);
pendingIntent = PendingIntent.getBroadcast(v.getContext(), 0, receiver, PendingIntent.FLAG_UPDATE_CURRENT);
alarmManager.set(AlarmManager.RTC_WAKEUP,myCalendar.getTimeInMillis(),pendingIntent);
}
});
呃好吧不要在我的脸上有鸡蛋我以前设置过的时间:D – Steven