我正在使用 dispatch_async 在其他方面做一些事情。
dispatch_queue_t backgroundQueue;
在viewDidLoad中:
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
backgroundQueue = dispatch_queue_create("dispatchName", NULL);
}
使用它:
dispatch_async(backgroundQueue, ^
{
// Do something...
});
在我再次调用此方法之前一切正常。 该应用程序因错误而崩溃:
2014-09-29 11:34:10.626 hELLO[2785:389790] *** Assertion failure in -[UIKeyboardTaskQueue waitUntilAllTasksAreFinished], /SourceCache/UIKit_Sim/UIKit-3318/Keyboard/UIKeyboardTaskQueue.m:374
2014-09-29 11:34:10.628 hELLO[2785:389790] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: '-[UIKeyboardTaskQueue waitUntilAllTasksAreFinished] may only be called from the main thread.'
您正在尝试执行进程,该进程只能在主线程中执行。 将代码放入
dispatch_async(dispatch_get_main_queue(), ^{
})
关于ios - Objective C - 调用 dispatch_async 显示错误,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/26095672/
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