package com.atguigu.mobileplayer1020.utils; import android.content.Context; import android.net.TrafficStats; import java.util.Formatter; import java.util.Locale; public class Utils {
      private StringBuilder mFormatBuilder;     private Formatter mFormatter;     private long lastTotalRxBytes = 0;     private long lastTimeStamp = 0;     public Utils() {
          // 转换成字符串的时间         mFormatBuilder = new StringBuilder();         mFormatter = new Formatter(mFormatBuilder, Locale.getDefault());     }     /**      * 把毫秒转换成：1:20:30这里形式      *      * @param timeMs      * @return      */     public String stringForTime(int timeMs) {
          int totalSeconds = timeMs / 1000;         int seconds = totalSeconds % 60;         int minutes = (totalSeconds / 60) % 60;         int hours = totalSeconds / 3600;         mFormatBuilder.setLength(0);         if (hours > 0) {
              return mFormatter.format("%d:%02d:%02d", hours, minutes, seconds)                     .toString();         } else {
              return mFormatter.format("%02d:%02d", minutes, seconds).toString();         }     }     /**      * 是否是网络资源      *      * @param url      * @return      */     public boolean isNetUrl(String url) {
          boolean result = false;         if (url != null) {
              if (url.toLowerCase().startsWith("http")                     || url.toLowerCase().startsWith("rtsp")                     || url.toLowerCase().startsWith("mms")) {
                  result = true;             }         }         return result;     }     /**      * 显示网络速度      * @param context      * @return      */     public String showNetSpeed(Context context) {
          long nowTotalRxBytes = TrafficStats.getUidRxBytes(context.getApplicationInfo().uid) == TrafficStats.UNSUPPORTED ? 0 : (TrafficStats.getTotalRxBytes() / 1024);//转为KB;         long nowTimeStamp = System.currentTimeMillis();         long speed = ((nowTotalRxBytes - lastTotalRxBytes) * 1000 / (nowTimeStamp - lastTimeStamp));//毫秒转换         lastTimeStamp = nowTimeStamp;         lastTotalRxBytes = nowTotalRxBytes;         String netSpeed = String.valueOf(speed) + " kb/s";         return netSpeed;     } }