iOS上的按钮不会在touchUpInside上发送事件

Question

I created a .xib file form my custom view. I created .h/.m files for that view. I ctrl dragged from button to header file to create an IBAction and set the value to touchUpInside. Here is what is happening:

http://screencast.com/t/R1WTpK7xp

WTF?

It triggers event when up is outside the button?

EDIT:

Here is the screenshot:

And what is the thing with down vote? I don't see a point in that.

View.h

#import <UIKit/UIKit.h>
#import "DrawingViewDelegate.h"

@interface DrawingBottomToolbarView : UIView

@property (weak) id <DrawingViewDelegate> delegate;

- (IBAction)lineSegmentButtonPush:(id)sender;

@end

View.m

#import "DrawingBottomToolbarView.h"

@implementation DrawingBottomToolbarView

@synthesize delegate;

- (id)initWithFrame:(CGRect)frame
{
    NSLog(@"frame");
    self = [super initWithFrame:frame];
    if (self) {
        // Initialization code
        [self addSubview:[[[NSBundle mainBundle] loadNibNamed:@"DrawingBottomToolbarView" owner:self options:nil] objectAtIndex:0]];
        //[[[NSBundle mainBundle] loadNibNamed:@"DrawingBottomToolbarView" owner:self options:nil] objectAtIndex:0];
        //[self addSubview:self.];
    }

    return self;
}

//-(id)initWithCoder:(NSCoder *)aDecoder{
//    
//    NSLog(@"coder");
//    if ((self = [super initWithCoder:aDecoder])){
//        [self addSubview:[[[NSBundle mainBundle] loadNibNamed:@"DrawingBottomToolbarView" owner:self options:nil] objectAtIndex:0]];
//    }
//    return self;
//}

- (IBAction)lineSegmentButtonPush:(id)sender 
{

     NSLog(@"line push");
}

@end

I don't get it where is the problem.

EDIT 2:

I tried setting buttons as outlets and add target/action in code and same thing happens:

.h

@property (weak, nonatomic) IBOutlet UIButton *lineSegmentButton;

.m

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        // Initialization code
        [self addSubview:[[[NSBundle mainBundle] loadNibNamed:@"DrawingBottomToolbarView" owner:self options:nil] objectAtIndex:0]];
        self.currentSelectedPathSegment = NoneSegment;

        [self.lineSegmentButton addTarget:self action:@selector(lineSegmentButtonPush:) forControlEvents:UIControlEventTouchUpInside];

    }

    return self;
}

EDIT 3: Here is where I add two views. drawing view is created in code, bottomToolbar is created from .xib file.

kBottomToolbarHeight is constant with same value as height defined in .xib file.

- (void)viewWillAppear:(BOOL)animated
{
    [self.view addSubview:self.drawingView];
    [self.view addSubview:self.bottomToolbar];

    CGRect selfRect = self.view.bounds;
    CGRect drawingViewRect = selfRect;
    CGRect bottomToobarRect = selfRect;

    drawingViewRect.size.height = selfRect.size.height - kBottomToolbarHeight;
    bottomToobarRect.size.height = kBottomToolbarHeight;
    bottomToobarRect.origin.y = drawingViewRect.size.height;

    self.drawingView.frame = drawingViewRect;    
    self.bottomToolbar.frame = bottomToobarRect;    
}

Answer 1

The behavior you mention and show in the screencast is exactly the same as I experienced when I somewhere in the view hierarchy had a parent view with a UITapGestureRecognizer .

I'm unsure whether or not to flag your question as a possible duplicate of this one which helped me solve my problem .

For reference this is not a problem in iOS 6.0, only earlier versions.