Java 如何获得今日';使用时间选择器选择日期/时间?
我有一个Java 如何获得今日';使用时间选择器选择日期/时间?,java,android,date,calendar,timepicker,Java,Android,Date,Calendar,Timepicker,我有一个计时器来获取时间。我为Android应用程序编写了以下Java代码: Calendar calendar = Calendar.getInstance(); calendar.setTimeInMillis(System.currentTimeMillis()); Log.e("Alarm", "" + calendar.getTime()); calendar.set(Calendar.HOUR, timePicker.getCurrentHour()); calendar.set(
计时器
来获取时间。我为Android应用程序编写了以下Java代码:
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
Log.e("Alarm", "" + calendar.getTime());
calendar.set(Calendar.HOUR, timePicker.getCurrentHour());
calendar.set(Calendar.MINUTE, timePicker.getCurrentMinute());
Log.e("Alarm", "" + calendar.getTime());
第二道工序比第一道工序提前一天
我试着用下面的代码减去了一天
calendar.add(Calendar.DATE, -1);
这是唯一的办法还是最好的办法?如何使用
时间选择器获取今天的日期/时间?您应该添加:calendar.getInstance()代码>改为calendar.add(calendar.DATE,-1)代码>
我的代码:
Date today = new Date();
final Calendar c = Calendar.getInstance();
preventa.setText(VarGlobales.formatofecha(today));
请检查以下代码…您可能会从中获得帮助
public void setCurrentTimeOnView() {
tvDisplayTime = (TextView) findViewById(R.id.tvTime);
timePicker1 = (TimePicker) findViewById(R.id.timePicker1);
final Calendar c = Calendar.getInstance();
hour = c.get(Calendar.HOUR_OF_DAY);
minute = c.get(Calendar.MINUTE);
// set current time into textview
tvDisplayTime.setText(
new StringBuilder().append(pad(hour))
.append(":").append(pad(minute)));
// set current time into timepicker
timePicker1.setCurrentHour(hour);
timePicker1.setCurrentMinute(minute);
}
时间选择器给出了GMT时间,您还应该考虑时区偏移。好的,我得到了解决方案。谢谢大家!:)
您应该使用一天中的小时,而不是小时,因为时间选择器的小时数在0-23之间。
Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.HOUR_OF_DAY, timePicker.getCurrentHour());
calendar.set(Calendar.MINUTE, timePicker.getCurrentMinute());
Log.e("Alarm", "" + calendar.getTime());