[英]UIButton not appearing on viewController
嘿,我试图像这样在ipad上渲染模式视图。
login_manager *log = [[login_manager alloc]init];
UINavigationController *nav = [[UINavigationController alloc]initWithRootViewController:log];
nav.modalPresentationStyle = UIModalPresentationFormSheet;
[self presentModalViewController:nav animated:YES];
[log release]`
然后在viewDidLoad中添加一个按钮。
-(void)viewDidLoad{
UIButton *facebook = [UIButton buttonWithType:UIButtonTypeCustom];
facebook.frame = CGRectMake(10,10,402,68);
facebook.imageView.image = [UIImage imageNamed:@"loginFB.png"];
[facebook addTarget:self action:@selector(login_FB) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:facebook];}
但是我无法使按钮出现在屏幕上,图像链接正确,并且正在调用viewDidLoad,但没有弹出任何提示。 有什么想法吗?
(void)viewDidLoad
{
UIButton *facebook = [UIButton buttonWithType:UIButtonTypeCustom];
facebook.frame = CGRectMake(10,10,402,68);
[facebook setImage:[UIImage imageNamed:@"loginFB.png"] forState:UIControllStateNormal];
[facebook addTarget:self action:@selector(login_FB)
forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:facebook];
}
-(void)viewDidLoad{
UIButton *sampleButton = [UIButton buttonWithType:UIButtonTypeCustom];
[sampleButton setFrame:CGRectMake(10, 10, 200, 52)];
[sampleButton setTitle:@"Button Title" forState:UIControlStateNormal];
[sampleButton setBackgroundImage:[[UIImage imageNamed:@"loginFB.png"] stretchableImageWithLeftCapWidth:10.0 topCapHeight:0.0] forState:UIControlStateNormal];
[sampleButton addTarget:self action:@selector(buttonPressed) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:sampleButton];
}
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