从子视图访问UIViewcontroller - iOS

Question

我有一个UIView .xib文件。这是从故事板入口点UIViewController1作为子视图打开的。子视图有一个IBButton，当它按下时打开一个UIViewController2。这有可能吗？

Answer 1

首先，创建一个从你的第一个视图控制器到你的第二个视图。我要命名它OpenViewController2。我们将能够以编程方式调用该segue。

在你UIView h文件，创建定义代表该视图的协议：

SomethingView.h：

@protocol SomethingViewDelegate <NSObject> { 
    - (void)importantThingHappened; 
} 

... 

@interface SomethingView { 
    id<SomethingViewDelegate> delegate; 
} 

@property (nonatomic, strong) id<SomethingViewDelegate> delegate; 

SomethingView.m：

@implementation 
@synthesize delegate; 

... 

// The IBAction for the button in your view 
- (IBAction)buttonClicked:(id)sender { 
    [delegate importantThingHappened]; 
} 

MyViewController。米，您创建您的视图：

// Create view 
UIView *myView = ... 

myView.delegate = self; 

在MyViewController后来：

// Implement the protocol. This function will be called when the button action 
// inside of the UIView you created is pressed 
- (void)importantThingHappened { 
    [self performSegueWithIdentifier:@"OpenViewController2" sender:self]; 
} 

Answer 2

首先给你的IBButton一个独特的标签，并在UIViewController的viewDidLoad，

// add following line into viewDidLoad 

[(UIButton*)[self.view viewWithTag:MY_UNIQUE_TAG_FOR_BUTTON] addTarget:self action:@selector(buttonPressed:) forControlEvent:UIControlEventTouchUpInside]; 

终于实现buttonPressed：任何你想要

-(void) buttonPressed:(UIButton*)aButton { 
    // do what you want to do. 
}