同步调用:在UI线程中同步等待子线程的结果,导致UI线程被阻塞。 死锁:多个线程因相互等待对方释放资源而导致死锁。 频繁的UI更新:在短时间内进行大量的UI更新操作,导致UI线程忙于处理绘制事件。 三、解决UI线程阻塞的常用方法 使用异步任务:将耗时操作放在子线程中执行,避免阻塞UI线程。 Handler和Looper:通过Handler将耗...
I'm facing an error when I try to implement a simple VideoPlayer view: Main thread blocked by synchronous property query on not-yet-loaded property (PreferredTransform) for HTTP(S) asset. This could have been a problem if this asset were being read from a slow network. This is the code...
frame #22: 0x000000018684075c UIKitCore`UIApplicationMain + 168 frame #23: 0x00000001022766b4 app`main at AppDelegate.swift:14:7 frame #24: 0x0000000183aba6b0 libdyld.dylib`start + 4 (lldb) (lldb) thread list Process 4264 stopped * thread #1: tid = 0x131e7b, 0x00000001b1dd5204 libs...
Whenever you first start an Android application, a thread called "main" is automatically created. The main thread, also called the UI thread, is very important because it is in charge of dispatching the events to the appropriate widgets and this includes the drawing events. It is also the th...
including drawing events, while the long operation is underway. From the user's perspective, the application appears hung. Even worse, if the UI thread is blocked for more than a few seconds (about 5 seconds currently) the user is presented with the infamous "application not responding" (ANR...
including drawing events, while the long operation is underway. From the user’s perspective, the application appears hung. Even worse, if the UI thread is blocked for more than a few seconds (about 5 seconds currently) the user is presented with the infamous “application not responding” (...
The function is just a regular one and not asuspendfunction. Therefore we don’t actually need to call it from a coroutine. Here, the main thread gets blocked while the calculation is running and so the UI freezes and gets unresponsive. The progress bar is n...
对于主线程中的工作线程的初始化到启动所有的工作线程前面已经做了分析,后面的创建监听socket、注册监听socket的libevent事件、启动主线程的libevent事件循环,就是接下来的内容了。 其中主要调用的函数是server_sockets,该函数从配置参数setting.inner字符串中依次提取出一个ip或者一个hostname(一个hostname可能有多个ip)...
even in// high-priority operations (like UI redrawing or animation)._observer=CFRunLoopObserverCreateWithHandler(NULL,kCFRunLoopAllActivities,YES,INT_MIN,^(CFRunLoopObserverRefobserver,CFRunLoopActivityactivity){typeof(self)strongSelf=weakSelf;if(!strongSelf){return;}switch(activity){// What we consider...
Coroutines can be used in the main thread for network calls, but network calls may take more time because of multiple reasons, and for that time the main thread is blocked. Because the main thread is responsible for rendering the UI, it will give a bad user experience ...