Call to ‘Thread.sleep()‘ in a loop, probably busy-waiting Inspection info: 彻底解决

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可以看到是最新的版本，依旧会报错，排除版本问题。

Call to 'Thread.sleep()' in a loop, probably busy-waiting 
 Inspection info: Reports calls to java.lang.Thread.sleep() that occur inside loops. Such calls are indicative of "busy-waiting". Busy-waiting is often inefficient, and may result in unexpected deadlocks as busy-waiting threads do not release locked resources.

解决办法：

• 1.Thread.sleep() 替换为Timer
• 2.ScheduledExecutorService方案实现线程时长频率

告警位置具有这样的特征：

• 1.循环中使用Thread.sleep()，且传入参数（millis:300）很短
• 2.导致持续不断的进行sleep 导致不安全

• 我们尝试去掉循环效果如下

可以看到黄色代码报警标志已经消失。

基于Handler的Android定时器与倒计时器

源码地址：Github AndroidTimer

支持操作 :

1. start
2. pause
3. resume
4. cancel

allprojects {
    repositories {
        ...
        maven { url 'https://jitpack.io' }
    }
}

dependencies {
    ...
    compile 'com.github.xesam:AndroidTimer:v0.1'
}

• add ticker sequence

    new CountTimer(100) {

        @Override
        public void onTick(long millisFly) { // millisFly is the Elapsed time at *Running State*
            vCountSwitcher.setText((millisFly) + "");
            Log.d("onTick", millisFly + "");
        }
    };

    new CountDownTimer(10_000, 100) {

        @Override
        public void onTick(long millisUntilFinished) { // millisUntilFinished is the left time at *Running State*
            Log.d("onTick", millisFly + "");
        }

        @Override
        public void onCancel(long millisUntilFinished) {
        }

        @Override
        public void onPause(long millisUntilFinished) {
        }

        @Override
        public void onResume(long millisUntilFinished) {
        }

        @Override
        public void onFinish() {
        }
    };

参考自 Android SDK 中的 CountDownTimer