Android获取CPU使用率

最新推荐文章于 2025-05-15 13:02:51 发布

KevinMoJ

最新推荐文章于 2025-05-15 13:02:51 发布

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分类专栏：个人总结文章标签： android cpu cpu使用率

本文链接：https://blog.youkuaiyun.com/KevinMoJ/article/details/71634784

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private static double readCPURate() {
        try {
            BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream("/proc/stat")), 1000);
            String load = reader.readLine();
            reader.close();

            String[] cpuInfos = load.split(" ");

            long currTotal = Long.parseLong(cpuInfos[2]) + Long.parseLong(cpuInfos[3]) + Long.parseLong(cpuInfos[4]);
            long currIdle = Long.parseLong(cpuInfos[5]);

            cpuUsageRate = (currTotal - cpuTotalTime) * 100.0f / (currTotal - cpuTotalTime + currIdle - cpuIdleTime);

            cpuTotalTime = currTotal;
            cpuIdleTime = currIdle;

        } catch (IOException ex) {
            ex.printStackTrace();
        }
        return cpuUsageRate;
    }

    public static void getCurrentCPURate(final onCPURateListener CPURate) {
        TaskHelper.exec(new TaskHelper.Task() {
            int cpuRate;

            @Override
            public void execute() throws Exception {
                readCPURate();
                SystemClock.sleep(300);
                double firstCPUUsage = readCPURate();
                SystemClock.sleep(300);
                double secondCPUUsage = readCPURate();
                cpuRate = (int) Math.round((firstCPUUsage + secondCPUUsage) / 2.0f);
            }

            @Override
            public void callback(Exception e) {
                if (CPURate != null)
                    CPURate.getCPURate(cpuRate);
            }
        });
    }