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我的主页有一个带有三个按钮的工具栏,通知和登录。我只希望通知按钮显示只有当用户在英寸。这里是我的代码如何将值传递给子类中父类中定义的变量?
//Parent class
@interface Toolbar : UIViewController {
UIToolbar *toolBar;
UIButton *home;
UIButton *notification;
UIButton *login;
BOOL signIn;
}
@property(nonatomic,assign)BOOL signIn;
@property(nonatomic,retain)UIButton *home;
@property(nonatomic,retain)UIButton *notification;
@property(nonatomic,retain)UIButton *login;
@property(nonatomic,retain)UIToolbar *toolBar;
-(IBAction)Home:(id)sender;
-(IBAction)LogIn:(id)sender;
//Toolbar.m
-(void)viewWillAppear:(BOOL)animated{
[super viewWillAppear:animated];
if (!signIn) {
[notification setHidden:YES];
[login setHidden:NO];
}else {
[notification setHidden:NO];
[login setHidden:YES];
}
}
//子类
@interface LoginScreen:工具栏{
LoginScreen.m
-(IBAction)SignIn{
if ([emailField.text isEqualToString:@"m"] && [passwordField.text isEqualToString:@"a"]) {
NSLog(@"loggedIN");
signIn=YES;
Home *home=[[Home alloc]initWithNibName:@"Home" bundle:nil];
[self.navigationController pushViewController:home animated:YES];
[home release];
}else {
//other condition
}
}
问题是我能够回家但登录条件不起作用。请指导我。谢谢..
我已经使用了下面的问题定义的协议..但没有帮助..http://stackoverflow.com/questions/1368757/setting-property-value-of- parent-viewcontroller-class-from-child-viewcontroller – NoviceDeveloper 2012-01-31 06:05:09
感谢您的善意帮助....但在所有示例中,这两个类都继承了uiviewcontroller类,但在我的情况下,我正在将其中一个类继承到另一个类中,并且这给了我错误信息。 – NoviceDeveloper 2012-01-31 10:30:42
您可以发送2个课程吗? – Ilanchezhian 2012-01-31 10:43:07