Android下载速度计算

long startTime = System.currentTimeMillis(); // 开始下载时获取开始时间

long curTime = System.currentTimeMillis();
int usedTime = (int) ((curTime-startTime)/1000);

if(usedTime==0)usedTime = 1;
int downloadSpeed = (downloadSize/usedTime)/1024; // 下载速度