ios - 方法未运行 - iOS

Question

我有一个非常简单的方法。但是在该方法中，UIAlertView 不会运行....这是我的方法:

-(void)post_result {
    NSLog(@"Post Result");

    post_now.enabled = YES;
    [active stopAnimating];
    [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];

    UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Success" message:@"You're post has been successfully uploaded." delegate:self cancelButtonTitle:@"Dismiss" otherButtonTitles:nil];
    [alertView show];

    success_post_facebook = 0;
    success_post_youtube = 0;
    success_post_googleplus = 0;
    success_post_tumblr = 0;
    success_post_twitter = 0;

    NSLog(@"Post Result END");
}

奇怪的是，UIAlertView 之前和之后的代码都会在这个方法中运行……所以到底是哪里错了？？

感谢您的宝贵时间。

Answer 1

您很可能不是在主线程上调用 UIAlertView。要让它在主线程上运行，只需像这样使用主调度队列。

dispatch_async(dispatch_get_main_queue(), ^{
    UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Success" message:@"You're post has been successfully uploaded." delegate:self cancelButtonTitle:@"Dismiss" otherButtonTitles:nil];
    [alertView show];
});