1、检查sys系统文件
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cat /sys/class/net/eth0/carrier #0代表未插入网线，1代表插入网线 |
2、ifconfig […]
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1、使用string.format转换，再通过tonumber转换回来 [crayon-6390b8eed57 […]
Continue reading...安卓java：检测设备否有GPS模块
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public boolean hasGPSDevice(Context context) { final LocationManager mgr = (LocationManager)context.getSystemService(Context.LOCATION_SERVICE); if ( mgr == null ) return false; final List<String> providers = mgr.getAllProviders(); if ( providers == null ) return false; return providers.contains(LocationManager.GPS_PROVIDER); } |
参考：https://blog.csdn.n […]
Continue reading...安卓java：统计指定时间段内的流量信息
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import android.app.usage.NetworkStatsManager; private NetworkStatsManager networkStatsManager; networkStatsManager = (NetworkStatsManager) context.getApplicationContext().getSystemService(NETWORK_STATS_SERVICE); NetworkStats.Bucket bucket = null; bucket = networkStatsManager.querySummaryForDevice(ConnectivityManager.TYPE_MOBILE, telephonyManager.getSubscriberId(), monthStart, System.currentTimeMillis()); Logger.i("month Total rx: " + bucket.getRxBytes() +" tx = " + bucket.getTxBytes()); bucket = networkStatsManager.querySummaryForDevice(ConnectivityManager.TYPE_MOBILE, telephonyManager.getSubscriberId(), todayStart, System.currentTimeMillis()); Logger.i("today Total rx: " + bucket.getRxBytes() +" tx = " + bucket.getTxBytes()); |
使用networkStatsManager. […]
Continue reading...安卓java：获取月初的时间戳
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public static long getTimestampOfbeginningMonth(){ /* // 获取当前年份、月份、日期 Calendar cale = null; cale = Calendar.getInstance(); int year = cale.get(Calendar.YEAR); int month = cale.get(Calendar.MONTH) + 1; int day = cale.get(Calendar.DATE); int hour = cale.get(Calendar.HOUR_OF_DAY); int minute = cale.get(Calendar.MINUTE); int second = cale.get(Calendar.SECOND); int dow = cale.get(Calendar.DAY_OF_WEEK); int dom = cale.get(Calendar.DAY_OF_MONTH); int doy = cale.get(Calendar.DAY_OF_YEAR); ShuncomLogger.i("Current Date: " + cale.getTime()); ShuncomLogger.i("Year: " + year); ShuncomLogger.i("Month: " + month); ShuncomLogger.i("Day: " + day); ShuncomLogger.i("Hour: " + hour); ShuncomLogger.i("Minute: " + minute); ShuncomLogger.i("Second: " + second); ShuncomLogger.i("Day of Week: " + dow); ShuncomLogger.i("Day of Month: " + dom); ShuncomLogger.i("Day of Year: " + doy); // 获取当月第一天和最后一天 SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd"); String firstday, lastday; // 获取前月的第一天 cale = Calendar.getInstance(); cale.add(Calendar.MONTH, 0); cale.set(Calendar.DAY_OF_MONTH, 1); firstday = format.format(cale.getTime()); // 获取前月的最后一天 cale = Calendar.getInstance(); cale.add(Calendar.MONTH, 1); cale.set(Calendar.DAY_OF_MONTH, 0); lastday = format.format(cale.getTime()); ShuncomLogger.i("本月第一天和最后一天分别是 ： " + firstday + " and " + lastday); */ Calendar calendar = Calendar.getInstance();// 获取当前日期 calendar.add(Calendar.MONTH, 0); calendar.set(Calendar.DAY_OF_MONTH, 1);// 设置为1号,当前日期既为本月第一天 calendar.set(Calendar.HOUR_OF_DAY, 0); calendar.set(Calendar.MINUTE, 0); calendar.set(Calendar.SECOND, 0); ShuncomLogger.i("月初的时间戳："+String.valueOf(calendar.getTimeInMillis())); return calendar.getTimeInMillis(); } public static long getTimestampOfbeginningToday(){ Calendar calendar = Calendar.getInstance();// 获取当前日期 //calendar.add(Calendar.MONTH, 0); //calendar.add(Calendar.DAY_OF_MONTH, 0); calendar.set(Calendar.HOUR_OF_DAY, 0); calendar.set(Calendar.MINUTE, 0); calendar.set(Calendar.SECOND, 0); ShuncomLogger.i("今天开始的时间戳："+String.valueOf(calendar.getTimeInMillis())); return calendar.getTimeInMillis(); } |
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Continue reading...Linux termios 串口编程之 VTIME与VMIN
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