运行中获取cpu占用率和内存占用

2023-06-03 07:47| 来源: 网络整理| 查看: 265

1.获取cpu占用率

实现：通过读取proc文件

public static float getProcessCpuRate() { float totalCpuTime1 = getTotalCpuTime(); float processCpuTime1 = getAppCpuTime(); try { Thread.sleep(360); //sleep一段时间 } catch (Exception e) { } float totalCpuTime2 = getTotalCpuTime(); float processCpuTime2 = getAppCpuTime(); float cpuRate = 100 * (processCpuTime2 - processCpuTime1) / (totalCpuTime2 - totalCpuTime1);//百分比 return cpuRate; } // 获取系统总CPU使用时间 public static long getTotalCpuTime() { String[] cpuInfos = null; try { BufferedReader reader = new BufferedReader(new InputStreamReader( new FileInputStream("/proc/stat")), 1000); String load = reader.readLine(); reader.close(); cpuInfos = load.split(" "); } catch (IOException ex) { ex.printStackTrace(); } long totalCpu = Long.parseLong(cpuInfos[2]) + Long.parseLong(cpuInfos[3]) + Long.parseLong(cpuInfos[4]) + Long.parseLong(cpuInfos[6]) + Long.parseLong(cpuInfos[5]) + Long.parseLong(cpuInfos[7]) + Long.parseLong(cpuInfos[8]); return totalCpu; } // 获取应用占用的CPU时间 public static long getAppCpuTime() { String[] cpuInfos = null; try { int pid = android.os.Process.myPid(); BufferedReader reader = new BufferedReader(new InputStreamReader( new FileInputStream("/proc/" + pid + "/stat")), 1000); String load = reader.readLine(); reader.close(); cpuInfos = load.split(" "); } catch (IOException ex) { ex.printStackTrace(); } long appCpuTime = Long.parseLong(cpuInfos[13]) + Long.parseLong(cpuInfos[14]) + Long.parseLong(cpuInfos[15]) + Long.parseLong(cpuInfos[16]); return appCpuTime; } 2.获取内存占用 // 获取应用占用的内存(单位为KB) public static String getAppMemory() { String info = null; try { int pid = android.os.Process.myPid(); BufferedReader reader = new BufferedReader(new InputStreamReader( new FileInputStream("/proc/" + pid + "/status")), 1000); String load; while ((load = reader.readLine()) != null) { load = load.replace(" ", ""); String[] Info = load.split("[: k K]"); if (Info[0].equals("VmRSS")) { info = Info[1]; break; } } reader.close(); } catch (IOException ex) { ex.printStackTrace(); } return info; }

注意：android8.0以上读取proc文件权限在正式环境下会受到限制。必须由系统方将app加入白名单

转自：Android运行中获取cpu占用率和内存占用_android获取cpu使用率_AmazonUnicon的博客-CSDN博客

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