实现统计 android手机 CPU使用率

 # -*- coding:utf-8 -*-
 '''
 Created on Sep 10, 2018

 @author: SaShuangYiBing
 '''
 import subprocess
 import time

 class CPU_usage(object):
     """
     CPU统计方法是参照：https://blog.csdn.net/xiaodanpeng/article/details/53503076

     """
     def __init__(self,t0):
         self.time = t0

     def read_cpu(self):
         cpu_info0 = []
         cpu_info1 = subprocess.check_output('adb shell cat /proc/stat').decode().split()[1:11]
         for i in cpu_info1:
             cpu_info0.append(int(i))
         return cpu_info0

     def get_idle(self):
         cpu_idle = self.read_cpu()[3]
         return cpu_idle

     def cal_cpu(self):
         t1_total = sum(self.read_cpu())
         t1_idle = self.get_idle()
         time.sleep(self.time)
         t2_total = sum(self.read_cpu())
         t2_idle = self.get_idle()
         cpu_usage = (1 - (t2_idle - t1_idle)/(t2_total - t1_total))*100
         if cpu_usage < 0:
             return cpu_usage == 0
         else:
             return cpu_usage

 if __name__ == "__main__":
        cal_cpu = CPU_usage(1)
        while True:
            print (time.strftime('%Y-%m-%d %H:%M:%S') + " The CPU usage is %d" %cal_cpu.cal_cpu() + "%")