SLComposeViewController缓慢显示 [英] SLComposeViewController appears slowly
问题描述
SLComposeViewController
呈现后需要3-4秒才能显示。但 presentViewController :( UIViewController *)动画:(BOOL)完成:^(void)完成
方法立即调用完成块。因此,即使我使用加载指示器,它也会在眨眼间消失。相关代码如下。顺便说一句,我试过 dispatch_async
它没有用。
SLComposeViewController
takes 3-4 seconds to appear after presenting it. But presentViewController:(UIViewController *) animated:(BOOL) completion:^(void)completion
methods completion block gets called immediately. So even if I use a loading indicator it disappears in a blink. The related code is below. Btw I tried dispatch_async
it didn't work.
如果你有任何想法,我怎样才能加快这个过程?
How can I speed up the process do you have any ideas?
SLComposeViewController *shareView = [SLComposeViewController composeViewControllerForServiceType: SLServiceTypeFacebook];
[shareView setTitle:@"Title"];
[shareView setInitialText:@"Description"];
[shareView addURL:[NSURL URLWithString:@"http://www.google.com/"]];
[shareView setCompletionHandler:^(SLComposeViewControllerResult result) {
switch (result) {
case SLComposeViewControllerResultCancelled:
{
NSLog(@"Facebook Post Canceled");
break;
}
case SLComposeViewControllerResultDone:
{
NSLog(@"Facebook Post Successful");
break;
}
default:
break;
}
}];
UIActivityIndicatorView *activityView = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
activityView.center = CGPointMake([UIScreen mainScreen].bounds.size.width / 2.0, [UIScreen mainScreen].bounds.size.height / 2.0);
[activityView startAnimating];
[self.view addSubview:activityView];
[self presentViewController:shareView animated:YES completion:^{
NSLog(@"Presented facebook");
[activityView removeFromSuperview];
}];
推荐答案
所以,这不是修复,但它可能会帮助你。我无法让事情看起来更快,我认为它只是在显示自身之前拉入数据的实现。
So, this isn't a fix, but it might help you out. I couldn't get the thing to appear faster, I think its just the implementation pulling in data before displaying itself.
由于nowViewController完成几乎立即执行,我的解决方法是显示进度视图,并设置选择器在2秒后执行。选择器只是隐藏进度视图,这是一个例子。
Since the presentViewController completion executes almost instantly, my workaround was to display a progress view, and set a selector to execute after 2 seconds. The selector simply hides the progress view, here's an example.
[MBProgressHUD showHUDAddedTo:self.view animated:YES];
[self performSelector:@selector(hideProgressView) withObject:nil afterDelay:2.0f];
[self presentViewController:self.composeViewController animated:YES completion:nil];
- (void)hideProgressView
{
[MBProgressHUD hideHUDForView:self.view animated:YES];
}
这篇关于SLComposeViewController缓慢显示的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!