设置系统日期时间和时区
设置系统的日期时间和时区，需要 系统权限和系统签名，android:sharedUserId="android.uid.system"
需要在manifest文件中添加相应的权限判断系统使用的是24小时制还是12小时制boolean is24Hour = DateFormat.is24HourFormat(mContext);
设置系统的小时制
24小时制android.provider.Settings.System.putString(mContext.getContentResolver(), android.provider.Settings.System.TIME_12_24, "24");
12小时制android.provider.Settings.System.putString(mContext.getContentResolver(), android.provider.Settings.System.TIME_12_24, "12");判断系统的时区是否是自动获取的public boolean isTimeZoneAuto(){ try { return android.provider.Settings.Global.getInt(mContext.getContentResolver(),
android.provider.Settings.Global.AUTO_TIME_ZONE) > 0;
} catch (SettingNotFoundException e) {
e.printStackTrace(); return false;
}
}
设置系统的时区是否自动获取public void setAutoTimeZone(int checked){
android.provider.Settings.Global.putInt(mContext.getContentResolver(),
android.provider.Settings.Global.AUTO_TIME_ZONE, checked);
}
判断系统的时间是否自动获取的public boolean isDateTimeAuto(){ try { return android.provider.Settings.Global.getInt(mContext.getContentResolver(),
android.provider.Settings.Global.AUTO_TIME) > 0;
} catch (SettingNotFoundException e) {
e.printStackTrace(); return false;
}
}
设置系统的时间是否需要自动获取public void setAutoDateTime(int checked){
android.provider.Settings.Global.putInt(mContext.getContentResolver(),
android.provider.Settings.Global.AUTO_TIME, checked);
}
设置系统日期
参考系统Settings中的源码public void setSysDate(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
((AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE)).setTime(when);
}
}
设置系统时间
参考系统Settings中的源码public void setSysTime(int hour,int minute){
Calendar c = Calendar.getInstance();
c.set(Calendar.HOUR_OF_DAY, hour);
c.set(Calendar.MINUTE, minute);
c.set(Calendar.SECOND, 0);
c.set(Calendar.MILLISECOND, 0); long when = c.getTimeInMillis(); if(when / 1000
((AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE)).setTime(when);
}
}
设置系统时区public void setTimeZone(String timeZone){ final Calendar now = Calendar.getInstance();
TimeZone tz = TimeZone.getTimeZone(timeZone);
now.setTimeZone(tz);
}
获取系统当前的时区public String getDefaultTimeZone(){ return TimeZone.getDefault().getDisplayName();
}
作者：CodeMiner
链接：https://www.jianshu.com/p/6c6a6091545d