在调用 Looper.myLooper().quit() 的时候发现报 NullPointerException,通过 Android Studio 发现如下提示:
查阅了 Looper 的源码:
/**
* Return the Looper object associated with the current thread. Returns
* null if the calling thread is not associated with a Looper.
*/
public static @Nullable Looper myLooper() {
return sThreadLocal.get();
}