從子視圖訪問UIViewcontroller - iOS

Question

我有一個UIView .xib文件。這是從故事板入口點UIViewController1作爲子視圖打開的。子視圖有一個IBButton，當它按下時打開一個UIViewController2。這有可能嗎？

Answer 1

首先，創建一個從你的第一個視圖控制器到你的第二個視圖。我要命名它OpenViewController2。我們將能夠以編程方式調用該segue。

在你UIView h文件，創建定義代表該視圖的協議：

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，您創建您的視圖：

// Create view 
UIView *myView = ... 

myView.delegate = self; 

在MyViewController後來：

// 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

首先給你的IBButton一個獨特的標籤，並在UIViewController的viewDidLoad，

// add following line into viewDidLoad 

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

終於實現buttonPressed：任何你想要

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