我有以下操作，当单击按钮时会调用该操作。日志消息尚未打印，视图没有更改。此函数位于UIViewController中。
你知道我做错了什么吗？为什么新视图没有显示为红色背景？
- (void)viewDidLoad
{
[levelButton2 addTarget:self action:@selector(clickButton) forControlEvents:UIControlEventTouchUpInside];
//MORE CODE
}
- (void) clickButton
{
NSLog(@"Clicked Button");
UIViewController *myViewController = [[UIViewController alloc] init];
myViewController.title = @"My First View";
myViewController.view.backgroundColor = [UIColor redColor];
//to push the UIView.
[self.navigationController pushViewController:myViewController animated:YES];
//[self.navigationController pushViewController:nextController animated:YES];
}
-(void) clickButton
{
NSLog(@"Clicked Button");
MyFirstController *myViewController = [[MyFirstController alloc] init];
[self.navigationController pushViewController:myViewController animated:YES];
[myViewController release];
}
然后进入MyFirstController.m文件和
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
if(self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil])
{
self.title = @"My First View";
}
return self;
}
我希望它能帮助你。
您尚未在该控制器中使用或提及NIB文件。。添加NIB文件，或者用视图控制器设置导航的根视图控制器，并推送视图控制器
您必须将IBAction方法更改为
- (void) clickButton
{
NSLog(@"Clicked Button");
MyFirstController *myViewController = [[MyFirstController alloc] initWithNibName:@"MyFirstController" bundle:nil];
myViewController.title = @"My First View";
myViewController.view.backgroundColor = [UIColor redColor];
//to push the UIView.
[self.navigationController pushViewController:myViewController animated:YES];
//[self.navigationController pushViewController:nextController animated:YES];
}