CODEWITHSUNDEEP
iosobjective-cios5
user1787741
user1787741

Reputation: 99

Add a button and action in a subclass of UIView

I have a class CustomView (subclass of UIView without xib file) in which I am creating some labels and buttons.I wanted to use this class in one of my another UIViewController to add those labels and buttons. I am able to add the labels and buttons to my viewController using custom view but if I add some action or event to the button(which is in custom view) , its not working. Please suggest me what should I do to add the action for the button.

//ViewController code

CustomView *slider=[[CustomView alloc]init];
[self.view addSubview:slider];

//CustomView code


toggleButton = [UIButton buttonWithType:UIButtonTypeCustom];
[toggleButton setTitle:@"" forState:UIControlStateNormal];
toggleButton.userInteractionEnabled=YES;

// add drag listener
[toggleButton addTarget:self action:@selector(wasDragged:withEvent:)
       forControlEvents:UIControlEventTouchDragInside];



// center and size
toggleButton.frame = CGRectMake(frame.origin.x, frame.origin.y, width, frame.size.height);

toggleButton.backgroundColor=[UIColor colorWithRed:0.1 green:0.1 blue:0.0 alpha:0.1];
[toggleButton.layer setBorderWidth:4.0];
[toggleButton.layer setBorderColor:[[UIColor lightGrayColor] CGColor]];
toggleButton.layer.cornerRadius=4.0;
[toggleButton setTitleColor:[UIColor colorWithRed:0.3 green:0.1 blue:0.4 alpha:1.0] forState:UIControlStateNormal];

// add it, centered
[self addSubview:toggleButton];


  - (void)wasDragged:(UIButton *)button withEvent:(UIEvent *)event 
  {
   NSLog(@"inside drag");
  }

Upvotes: 2

Views: 5050

Answers (4)

Ushan87
Ushan87

Reputation: 1623

Replace your code with followings:

CustomView.h :

#import <UIKit/UIKit.h>
#import <QuartzCore/QuartzCore.h>

@interface CustomView : UIView

@property (nonatomic, strong) UIButton *toggleButton;

@end

CustomView.m :

#import "CustomView.h"

@implementation CustomView

@synthesize toggleButton;

- (id)initWithFrame:(CGRect)frame
{
      self = [super initWithFrame:frame];
      if (self) {
            // Initialization code
            toggleButton = [UIButton buttonWithType:UIButtonTypeCustom];
            [toggleButton setTitle:@"" forState:UIControlStateNormal];
            toggleButton.userInteractionEnabled=YES;

            // add drag listener
            [toggleButton addTarget:self action:@selector(wasDragged:withEvent:)
                       forControlEvents:UIControlEventTouchDragInside];

            // center and size
            toggleButton.frame = CGRectMake(frame.origin.x, frame.origin.y, width, frame.size.height);

           toggleButton.backgroundColor=[UIColor colorWithRed:0.1 green:0.1 blue:0.0 alpha:0.1];
           [toggleButton.layer setBorderWidth:4.0];
           [toggleButton.layer setBorderColor:[[UIColor lightGrayColor] CGColor]];
           toggleButton.layer.cornerRadius=4.0;
           [toggleButton setTitleColor:[UIColor colorWithRed:0.3 green:0.1 blue:0.4 alpha:1.0] forState:UIControlStateNormal];

           // add it, centered
           [self addSubview:toggleButton];
    }
    return self;
}

- (void)wasDragged:(UIButton *)button withEvent:(UIEvent *)event
{
      NSLog(@"inside drag");
}

Add CustomView to the ViewController like:

CustomView *slider=[[CustomView alloc]initWithFrame:CGRectMake(x, y, width, height)];
[self.view addSubview:slider];

I tested this code and it works :)

Upvotes: 2

Rakesh
Rakesh

Reputation: 3399

You added target as self for the action wasDragged:withEvent. For this to work(assuming wasDragged:withEvent is declared in you custom view), you have to rewrite the code to 

[toggleButton addTarget:slider action:@selector(wasDragged:withEvent:)
       forControlEvents:UIControlEventTouchDragInside];

Upvotes: 0

Eric Qian
Eric Qian

Reputation: 2256

Where did you put the method wasDragged:withEvent? because in CustomView code, you set the button target to self, which is customview. So the button TouchDragInside event will be sent to customview not viewController. If you put wasDragged:withEvent in ViewController, it's not gonna work

Upvotes: 0

Sudha Tiwari
Sudha Tiwari

Reputation: 2451

Replace this line

[toggleButton addTarget:self action:@selector(wasDragged:withEvent:)
       forControlEvents:UIControlEventTouchDragInside];

with this

[toggleButton addTarget:self action:@selector(wasDragged:withEvent:)
       forControlEvents:UIControlEventTouchUpInside];

Hope this will work

Upvotes: 0

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