更改所选分段控件的颜色 [英] Change the color of selected segment control

问题描述

在我的应用程序中，我可以更改所选分段控件的颜色。但是为另一个索引而不是选定的索引更改颜色。我可以在索引中找到任何错误。

In my app,i able to change the color of the selected segment control.But the color is changed for another index rather than selected index. I can find any mistake in the index.

帮助我！

我的代码如下：

if([SegmentRound selectedSegmentIndex] == 0)
    {

        UIColor *newSelectedTintColor2 = [UIColor colorWithRed: 98/255.0 green:156/255.0 blue:247/255.0 alpha:1.0];
        [[[SegmentRound subviews] objectAtIndex:0] setTintColor:newSelectedTintColor2];

        UIColor *newSelectedTintColor1 = [UIColor colorWithRed: 54/255.0 green:52/255.0 blue:48/255.0 alpha:1.0];
        [[[SegmentRound subviews] objectAtIndex:1] setTintColor:newSelectedTintColor1];

        UIColor *newSelectedTintColor0 = [UIColor colorWithRed: 54/255.0 green:52/255.0 blue:48/255.0 alpha:1.0];
        [[[SegmentRound subviews] objectAtIndex:2] setTintColor:newSelectedTintColor0];



        FLAGROUND=1;
    }

    if([SegmentRound selectedSegmentIndex] == 1)
    {
        UIColor *newSelectedTintColor1 = [UIColor colorWithRed: 98/255.0 green:156/255.0 blue:247/255.0 alpha:1.0];
        [[[SegmentRound subviews] objectAtIndex:1] setTintColor:newSelectedTintColor1];

        UIColor *newSelectedTintColor0 = [UIColor colorWithRed: 54/255.0 green:52/255.0 blue:48/255.0 alpha:1.0];
        [[[SegmentRound subviews] objectAtIndex:0] setTintColor:newSelectedTintColor0];

        UIColor *newSelectedTintColor2 = [UIColor colorWithRed: 54/255.0 green:52/255.0 blue:48/255.0 alpha:1.0];
        [[[SegmentRound subviews] objectAtIndex:2] setTintColor:newSelectedTintColor2];

        FLAGROUND=2;
    }
    if([SegmentRound selectedSegmentIndex] == 2)
    {
        UIColor *newSelectedTintColor0 = [UIColor colorWithRed: 98/255.0 green:156/255.0 blue:247/255.0 alpha:1.0];
        [[[SegmentRound subviews] objectAtIndex:2] setTintColor:newSelectedTintColor0];

        UIColor *newSelectedTintColor2 = [UIColor colorWithRed: 54/255.0 green:52/255.0 blue:48/255.0 alpha:1.0];
        [[[SegmentRound subviews] objectAtIndex:0] setTintColor:newSelectedTintColor2];

        UIColor *newSelectedTintColor1 = [UIColor colorWithRed: 54/255.0 green:52/255.0 blue:48/255.0 alpha:1.0];
        [[[SegmentRound subviews] objectAtIndex:1] setTintColor:newSelectedTintColor1];
        FLAGROUND=3;
    }

viewwillAppear：

viewwillAppear:

[SegmentRound setSelectedSegmentIndex:0];

推荐答案

我建议创建两种颜色你的条件，使你的代码更小。然后你可以使用foreach迭代你的片段：

I'd recommend to create the two colors outside of your condition, makes your code a bit smaller. Then you can use a foreach to iterate over your segments :

UIColor *selectedColor = [UIColor colorWithRed: 98/255.0 green:156/255.0 blue:247/255.0 alpha:1.0];
UIColor *deselectedColor = [UIColor colorWithRed: 54/255.0 green:52/255.0 blue:48/255.0 alpha:1.0];

for (UIControl *subview in [SegmentRound subviews]) {
    if ([subview isSelected]) 
       [subview setTintColor:selectedColor]; 
    else
       [subview setTintColor:deselectedColor]; 
}

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