import android.os.SystemClock;


Android官方文档:

public static long elapsedRealtime ()

Returns milliseconds since boot, including time spent in sleep.

返回Android系统启动至今的时间。


public static void sleep (long ms)

Waits a given number of milliseconds (of uptimeMillis) before returning. Similar to sleep(long), but does not throw InterruptedException; interrupt() events are deferred until the next interruptible operation. Does not return until at least the specified number of milliseconds has elapsed.

与Java Thread.sleep(long ms)基本相似,但是Android的SystemClock忽略InterruptedException



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