1、将系统时间设置为24小时制 if(!DateFormat.is24HourFormat(mContext)) { android.provider.Settings.System.putString(mContext.getContentResolver(), android.provider.Settings.System.TIME_12_24, "24"); }
2、设置系统时间
public void setSysDate(int year,int month,int day, int hour,int minute, int second){ try { Calendar c = Calendar.getInstance(); c.set(Calendar.YEAR, year); c.set(Calendar.MONTH, month - 1); c.set(Calendar.DAY_OF_MONTH, day); c.set(Calendar.HOUR_OF_DAY, hour); c.set(Calendar.MINUTE, minute); c.set(Calendar.SECOND, second); c.set(Calendar.MILLISECOND, 0); long when = c.getTimeInMillis(); if(when / 1000 < Integer.MAX_VALUE){ ((AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE)).setTime(when); } }catch (Exception e) { e.printStackTrace(); } }
在APP中用代码设置,该APP需要系统签名,上述代码功能才会生效
//开启系统的HP打印服务 String str = Settings.Secure.getString(mContext.getContentResolver(), "enabled_print_services"); if(str == null || str.equals("")) { Settings.Secure.putString(mContext.getContentResolver(), "enabled_print_services", "com.hp.android.printservice/com.hp.android.printservice.ServiceAndroidPrint"); }