我想动态更改 rootViewController。这取决于 json 响应。我有一个 BOOL 值,它在收到 json 响应后发生变化。问题是即使条件为真,这个值也永远不会改变。
我的代码在下面,我把它放在应用程序 didFinishLaunchingWithOptions 中:
isTime = NO;
NSURLRequest *request = [[NSURLRequest alloc] initWithURL:[NSURL URLWithString:
[url
stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding] ]];
__block NSDictionary * json;
[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response,NSData *data,NSError *connectionError){
json = [NSJSONSerialization JSONObjectWithData:data options:0 error:&connectionError];
NSLog(@"JSON >>>> %@",[json objectForKey:@"status"]);
if ([[json objectForKey:@"status"] isEqualToString:@"ok"]) {
isTime = YES;
}
}];
if(isTime){
//rootView1
}else{
//rootView2
}
我该如何解决?有什么想法吗?
最佳答案
如下更改您的代码。
{
NSURLRequest *request = [[NSURLRequest alloc] initWithURL:[NSURL URLWithString:
[url
stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding] ]];
__block NSDictionary * json;
[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response,NSData *data,NSError *connectionError){
json = [NSJSONSerialization JSONObjectWithData:data options:0 error:&connectionError];
NSLog(@"JSON >>>> %@",[json objectForKey:@"status"]);
if ([[json objectForKey:@"status"] isEqualToString:@"ok"]) {
//rootView1
//Change RootVC to RootView1
}
else {
//rootView2
//Change RootVC to RootView2
}
}];
//Add LoadingVC (Intermediate) RootVC
}
-(void) changeRootViewController:(UIViewController*) viewController {
[[[[UIApplication sharedApplication] delegate] window] setRootViewController: viewController];
}
关于iOS 动态改变 rootViewController,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/38009827/