如何在单击同一UIbutton的同时更改UIButton backgroundimage?

问题描述

我正在使用 UIButton ，而xib backgroundImage为 check_box_off.png ，同时单击atmbtn backgroundImage更改为 check_box_on.png ，同时 NSLog 打印 yesString ，然后再次单击atmbtn，backgroundImage不变. check_box_on.png ，同时NSLog仅打印相同的 yesString ..一次又一次地叮当响atmbutton相同..

I am using UIButton with xib backgroundImage is check_box_off.png, while clicking the atmbtn backgroundImage change to check_box_on.png meanwhile NSLog printing yesString and again clicking atmbtn there is no change in backgroundImage same check_box_on.png meanwhile NSLog Printing same yesString only.. again and again clinking the atmbutton same only happening..

- (IBAction)atmAction:(id)sender{  
    if( [atmbtn backgroundImageForState:UIControlStateNormal] ==
        [UIImage imageNamed:@"check_box_on.png"] ) {
       [atmbtn setImage:[UIImage imageNamed:@"check_box_off.png"] 
               forState:UIControlStateNormal]; 

        noString = @"No"; 
        NSLog(@"atm=%@",noString);
    } else if( [atmbtn backgroundImageForState:UIControlStateNormal] ==
                [UIImage imageNamed:@"check_box_off.png"]) {

        [atmbtn setImage:[UIImage imageNamed:@"check_box_on.png"]
                forState:UIControlStateNormal];

         yesString = @"Yes";
         NSLog(@"atm = %@",yesString);
     }
}

NSLog打印:

atm =是

atm =是

atm =是

我该如何解决?请分享您的想法.

how Could I resolve this? Please Share your Ideas.

推荐答案

使用此:

[atmbtn setBackgroundImage:[UIImage imageNamed:@"check_box_on.png"] forState:UIControlStateNormal];

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