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"
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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");
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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 < Integer.MAX_VALUE){ ((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 < Integer.MAX_VALUE){ ((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(); }