块方法完成后执行方法 [英] Execute a method after the completion of a block method
问题描述
我在左菜单中使用 RNFrostedSidebar .在关闭边栏时,下面的代码块正在执行
I am using RNFrostedSidebar for leftmenu. While dismissing the sidebar, below block of code is executing
- (void)handleTap:(UIPanGestureRecognizer *)recognizer {
[self dismissAnimated:YES completion:nil];
}
- (void)dismissAnimated:(BOOL)animated completion:(void (^)(BOOL finished))completion {
void (^completionBlock)(BOOL) = ^(BOOL finished){
[self rn_removeFromParentViewControllerCallingAppearanceMethods:YES];
rn_frostedMenu = nil;
if (completion) {
completion(finished);
}
};
if (animated) {
CGFloat parentWidth = self.view.bounds.size.width;
CGRect contentFrame = self.contentView.frame;
contentFrame.origin.x = self.showFromRight ? parentWidth : -_width;
CGRect blurFrame = self.blurView.frame;
blurFrame.origin.x = self.showFromRight ? parentWidth : 0;
blurFrame.size.width = 0;
self.blurView.frame = blurFrame;
self.blurView.alpha=0.1;
[UIView animateWithDuration:self.animationDuration delay:0 options:UIViewAnimationOptionBeginFromCurrentState animations:^{
self.viewForTable.frame = contentFrame;
}
completion:completionBlock];
} else {
completionBlock(YES);
}
}
在执行dismissAnimated方法后,我想运行一个代码来更新HomeViewController,该代码是
After dismissAnimated method executed i want to run a code to update the HomeViewController, That code is
[self callNavBar];
-(void) callNavBar {
[[NSNotificationCenter defaultCenter] postNotificationName:@"adjustNavBar"
object:self];
}
我尝试了此解决方案,例如将方法添加到队列中并执行,但是我得到了
i tried this solution, like adding the methods in queue and executing but i got exception as
主线程检查器:在后台线程上调用的UI API:-[UIView界限]"
"Main Thread Checker: UI API called on a background thread: -[UIView bounds]"
然后我尝试了这也具有与上述相同的错误.
Then i tried this too got the same error as above.
推荐答案
您的问题是因为您没有在UI线程中更新ui.要解决此问题,请在主队列中调用dismissAnimated:completion:
方法.
Your problem is because you didn't update ui inside UI thread. To resolve it, call dismissAnimated:completion:
method inside main queue.
- (void)handleTap:(UIPanGestureRecognizer *)recognizer {
dispatch_async(dispatch_get_main_queue(), ^{
[self dismissAnimated:YES completion:^(BOOL finished) {
[self callNavBar];
}];
});
}
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