使用 2 个 UIButton 模拟 UISegmentedControl答案

【问题标题】：Simulating UISegmentedControl with 2 UIButtons使用 2 个 UIButton 模拟 UISegmentedControl
【发布时间】：2015-01-07 09:36:54
【问题描述】：

我想要两个自定义按钮来模拟 UISegmentedControl 的行为方式（切换按钮文本颜色和图像）

这是我目前所拥有的：

    - (IBAction)byDateTapped:(UIButton *)sender {

    UIColor *darkColor = [UIColor colorWithRed:52/255 green:91/255 blue:120/255 alpha:1.0];
    UIColor *lightColor = [UIColor colorWithRed:158/255 green:200/255 blue:217/255 alpha:1.0];

    self.byDateView.hidden = NO;
    [self.byDateButton setBackgroundImage:[UIImage imageNamed:@"radioOn"] forState:UIControlStateNormal];
    [self.byDateButton setTitleColor:darkColor forState:UIControlStateNormal];
    [self.byDateButton setTitleColor:darkColor forState:UIControlStateHighlighted];

    self.byCategoryView.hidden = YES;
    [self.byCategoryButton setBackgroundImage:[UIImage imageNamed:@"radioOff"]forState:UIControlStateNormal];
    [self.byCategoryButton setTitleColor:lightColor forState:UIControlStateNormal];
    [self.byCategoryButton setTitleColor:lightColor forState:UIControlStateHighlighted];

}

- (IBAction)byCategoryTapped:(UIButton *)sender {

    UIColor *darkColor = [UIColor colorWithRed:52/255 green:91/255 blue:120/255 alpha:1.0];
    UIColor *lightColor = [UIColor colorWithRed:158/255 green:200/255 blue:217/255 alpha:1.0];

    self.byDateView.hidden = YES;
    [self.byDateButton setBackgroundImage:[UIImage imageNamed:@"radioOff"] forState:UIControlStateNormal];
    [self.byDateButton setTitleColor:lightColor forState:UIControlStateNormal];
    [self.byDateButton setTitleColor:lightColor forState:UIControlStateHighlighted];

    self.byCategoryView.hidden = NO;
    [self.byCategoryButton setBackgroundImage:[UIImage imageNamed:@"radioOn"]forState:UIControlStateNormal];
    [self.byCategoryButton setTitleColor:darkColor forState:UIControlStateNormal];
    [self.byCategoryButton setTitleColor:darkColor forState:UIControlStateHighlighted];

}

我似乎无法开始工作的唯一一件事是更改按钮文本颜色。任何想法为什么？

【问题讨论】：

标签： ios objective-c uibutton uisegmentedcontrol

【解决方案1】：

您的 IBAction 方法应该像

一样简单

- (IBAction)byDateTapped:(UIButton *)sender {

[self.byDateButton setSelected:YES];
[self.byCategoryButton setSelected:NO];

}

- (IBAction)byCategoryTapped:(UIButton *)sender {

[self.byDateButton setSelected:NO];
[self.byCategoryButton setSelected:YES];

}

您应该对初始化代码 (viewDidLoad) 上的所有状态进行所有设置。

您应该使用UIControlStateSelected 而不是UIControlStateHighlighted。仅供参考，您也可以对背景图像执行相同的操作。

例如：

[_byDateButton setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];
[_byDateButton setTitleColor:[UIColor greenColor] forState:UIControlStateSelected];
[_byCategoryButton setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];
[_byCategoryButton setTitleColor:[UIColor greenColor] forState:UIControlStateSelected];

【讨论】：