小编Sam*_*Sam的帖子

我正在尝试从网站获取数据 - xml.一切正常.

但是UIButton仍然被按下,直到返回xml数据,因此如果互联网服务出现问题,它就无法纠正,而且应用程序几乎无法使用.

这是电话:

{
    AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];
    if(!appDelegate.XMLdataArray.count > 0){
        [UIApplication sharedApplication].networkActivityIndicatorVisible = YES;
        [appDelegate GetApps]; //function that retrieves data from Website and puts into the array - XMLdataArray.

    }
    XMLViewController *controller = [[XMLViewController alloc] initWithNibName:@"MedGearsApps" bundle:nil];
    [self.navigationController pushViewController:controller animated:YES];
    [controller release];
}

它工作正常,但如何使视图按钮功能卡住.换句话说,我只是希望UIButton和其他UIButton能够在后台运行时起作用.

我听说performSelectorInMainThread但我不能正确地练习它

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