Question

如何在点击一个按钮时取消选择另外两个按钮。我可以通过点击它来更改按钮的图像。我已经从IB创建了三个按钮。他们的ibaction如下：

- (IBAction)todaybuttonClicked:(id)sender
{
    todayButton.tag=0;

    NSLog(@"hi todaybuttonClicked");
    if ([sender isSelected]) {
        [todayButton setBackgroundImage:[UIImage imageNamed:@"normal.png"] forState:UIControlStateNormal];

        [sender setSelected:NO];
    }
    else{
        [sender setBackgroundImage:[UIImage imageNamed:@"selected.png"] forState:UIControlStateNormal];
        [sender setSelected:YES];
    }  
        [self todayOffersSegmentSelected];

}

- (IBAction)tomorrowbuttonClicked:(id)sender
{
    tomorrowButton.tag=1;

    NSLog(@"hi tomorrowbuttonClicked");

    if ([sender isSelected]) {

        [tomorrowButton setBackgroundImage:[UIImage imageNamed:@"normal.png"] forState:UIControlStateNormal];

        [sender setSelected:NO];
    }
    else{
        [sender setBackgroundImage:[UIImage imageNamed:@"selected.png"] forState:UIControlStateSelected];
        [sender setSelected:YES];

    }
    [self tomorrowOffersSegmentSelected];
}

- (IBAction)restoftheweekbuttonClicked:(id)sender
{
    restoftheweekButton.tag=2;

    NSLog(@"hi restoftheweekbuttonClicked");

    if ([sender isSelected])
    {
        [restoftheweekButton setBackgroundImage:[UIImage imageNamed:@"normal.png"] forState:UIControlStateNormal];

        [sender setSelected:NO];

    }

    else{

        [sender setBackgroundImage:[UIImage imageNamed:@"selected.png"] forState:UIControlStateSelected];

        [sender setSelected:YES];

    }
    [self restOfWeekOffersSegmentSelected];

}

任何建议？感谢

Answer 1

在viewDidLoad中，您可以使用按钮初始化_days数组：

_daysArray =[[[NSArray alloc]initWithObjects:self.sunday,self.monday,self.tuesday,self.wednesday,self.thursday,self.friday,self.saturday nil]retain];

如果您使用IB创建按钮，只需将它们全部指向您班级中的同一IBAction：

-(IBAction)changeSelectedDay:(id)sender
{
    for (UIButton *button in _buttonsArray) {
        [button setSelected:([button isEqual:sender])?YES:NO];
    }
}

恕我直言，这种方法更清洁。

Answer 2

按下今天按钮时，您可以通过以下方式取消选择其他两个按钮：

-(IBAction)todaybuttonClicked:(id)sender
{

    [tomorrowButton setSelected: NO];
    [restoftheweekButton setSelected: NO];


    //... do rest of stuff
}

选择其他按钮时使用相同的模式。

Answer 3

您可以使用IBOutletCollection。它的类似要求。我将尝试粘贴一篇博文，详细解释它。

一些相关的SO帖子是： Practical efficient usage of IBOutletColletion

点击任何一个uibutton-iphone取消选择其他按钮

3 个答案: