Ios 在选项卡之间切换时重置多个按钮的图像

我有一个屏幕，在那里我使按钮看起来像带有图像的复选框（

checked.png

和

unchecked.png

）。当我在选项卡之间切换时，我应该重置所有

复选框（按钮）

，并使用

unchecked.png

。 我做过类似的事情

self->eatbuffet = NO;
self->eatnonveg = NO;
self->eatalcohol = NO;



if (eatbuffet == NO || eatnonveg == NO  || eatalcohol == NO) {

    [button setImage:[UIImage imageNamed:@"un_checked"] forState:UIControlStateNormal];

}

这三个都是布尔值。 如果我选中一个并切换选项卡，它就会工作。但是如果我对2或3也这样做，它就不起作用了。

---

请帮忙

以下是一个可能对您有所帮助的小想法：

/*
 this method is called everytime your view is going to be shown.
 if your application is based on a tab view controller for example,
 this method will get called every time you go back to that view
*/
-(void) viewWillAppear {
    [super viewWillAppear];
    self.eatbuffet = NO;
    self.eatnonveg = NO;
    self.eatalcohol = NO;

    [button1 setImage[UIImage imageNamed:@"un_checked"] forState:UIControlStateNormal];
    [button2 setImage[UIImage imageNamed:@"un_checked"] forState:UIControlStateNormal];
    [button3 setImage[UIImage imageNamed:@"un_checked"] forState:UIControlStateNormal];
}

---

你可以这样做

-(void)checkBox:(UIButton*)button{

switch (button.tag) {
    case 0:{
        eatbuffet = button;
        [eatbuffet setBackgroundImage:[UIImage imageNamed:@"check"] forState:UIControlStateNormal];
        [eatnonveg setBackgroundImage:[UIImage imageNamed:@"uncheck"] forState:UIControlStateNormal];
        [eatalcohol setBackgroundImage:[UIImage imageNamed:@"uncheck"] forState:UIControlStateNormal];
    }
        break;
    case 1:
    {
        eatnonveg = button;
        [eatbuffet setBackgroundImage:[UIImage imageNamed:@"uncheck"] forState:UIControlStateNormal];
        [eatnonveg setBackgroundImage:[UIImage imageNamed:@"check"] forState:UIControlStateNormal];
        [eatalcohol setBackgroundImage:[UIImage imageNamed:@"uncheck"] forState:UIControlStateNormal];
    }
        break;
    case 2:
    {
        eatalcohol = button;

        [eatbuffet setBackgroundImage:[UIImage imageNamed:@"uncheck"] forState:UIControlStateNormal];
        [eatnonveg setBackgroundImage:[UIImage imageNamed:@"uncheck"] forState:UIControlStateNormal];
        [eatalcohol setBackgroundImage:[UIImage imageNamed:@"check"] forState:UIControlStateNormal];
    }
        break;

    default:
        break;
}

}

---

注意：必须设置标记0,1,2。。。。对于所有按钮。

只需为两种状态放置两个不同的图像，即：选定和默认。。当按钮更改其状态时，图像将更改

self.myButton.selected = YES/NO;

---

我在这里了解到的是，您只需更改1个按钮的图像。这就是你想做的吗？不，我应该重置所有按钮。我知道我还需要添加一些额外的代码，但不知道这一点。您是否有所有3个按钮的出口（参考s）？@downvoter，downvote的原因？？