iphone - Objective-C : UIButton image does not changes

Question

我这样做是为了更改UIButton 图像，这里所有的“开关” 都是UIButton 的IBOutlets ,

-(IBAction)userselect:(id)sender
{
    UIButton *btnTagcatcher =(UIButton * )sender;
 if(btnTagcatcher.tag == 1)
    {
        if(btnimgflag1 == 0)
            {
                NSString* path  = [[NSBundle mainBundle] pathForResource:@"check-box-withtick-1n1" 
                                                                  ofType:@"png"];
                UIImage *image  = [[UIImage alloc] initWithContentsOfFile:path];
                [switch1 setImage:image forState:UIControlStateNormal];
                NSString* path1  = [[NSBundle mainBundle] pathForResource:@"check-box-withouttickn1" 
                                                                   ofType:@"png"];
                UIImage *image1  = [[UIImage alloc] initWithContentsOfFile:path1];
                [switch2 setImage:image1 forState:UIControlStateNormal];
                [switch3 setImage:image1 forState:UIControlStateNormal];
                [switch4 setImage:image1 forState:UIControlStateNormal];
                btnimgflag2 = 0;
                btnimgflag3 = 0;
                btnimgflag4 = 0;


                btnimgflag1 = 1;
            }
            else if(btnimgflag1 == 1)
            {
        NSString* path  = [[NSBundle mainBundle] pathForResource:@"check-box-withouttickn1" 
                                                                  ofType:@"png"];
                UIImage *image  = [[UIImage alloc] initWithContentsOfFile:path];

                //[switch1 setImage: image];
                [switch1 setImage:image forState:UIControlStateNormal];
                btnimgflag1 = 0;
            }

但有些时候(通常是第一次按下时)点击时按钮图像不会改变。

我不知道，请问这里发生了什么。提前指导我，thanx。

问候萨德。

Answer 1

您能否将此条件 else if(btnimgflag1 == 1) 更改为简单的 else 语句。因为在 if 部分中，您将 btnimgflag1 指定为 1 btnimgflag1 = 1;。只是我的猜测，我遇到了完全相同的问题!如果那没有帮助! IBOutlet connections 应该是问题所在!!