Android 设置系统时间与日期方法

static void setTime(Context context, int hourOfDay, int minute) {
        Calendar c = Calendar.getInstance();
        c.set(Calendar.HOUR_OF_DAY, hourOfDay);
        c.set(Calendar.MINUTE, minute);
        c.set(Calendar.SECOND, 0);
        c.set(Calendar.MILLISECOND, 0);
        long when = c.getTimeInMillis();
        if (when / 1000 < Integer.MAX_VALUE) {
            ((AlarmManager) context.getSystemService(Context.ALARM_SERVICE)).setTime(when);
        }
    }

static void setDate(Context context, int year, int month, int day) {
        Calendar c = Calendar.getInstance();
        c.set(Calendar.YEAR, year);
        c.set(Calendar.MONTH, month);
        c.set(Calendar.DAY_OF_MONTH, day);
        long when = c.getTimeInMillis();
        if (when / 1000 < Integer.MAX_VALUE) {
            ((AlarmManager) context.getSystemService(Context.ALARM_SERVICE)).setTime(when);
        }
    }

    <uses-permission android:name="android.permission.SET_TIME" />