//通用的手机流量计算方法 private String byteToMB(long size){
long kb = 1024;
long mb = kb*1024;
long gb = mb*1024;
if (size >= gb){
return String.format("%.1f GB",(float)size/gb);
}else if (size >= mb){
float f = (float) size/mb;
return String.format(f > 100 ?"%.0f MB":"%.1f MB",f);
}else if (size > kb){
float f = (float) size / kb;
return String.format(f>100?"%.0f KB":"%.1f KB",f);
}else {
return String.format("%d B",size);
}
}