ios – UISegmentedControl中的两行文本

尽我所能,我无法解决iOS7 iPhone应用程序的UISegmentedControl错误.

当我创建分段控件时,我使用以下代码：

NSArray *segmentedControlItemArray = [NSArray arrayWithObjects: @"Nominal:\n27 inch",@"Actual:\n700c x 23mm",@"Actual:\n700c x 20mm",nil];
_wheelDiameterSegmentedControl = [[UISegmentedControl alloc] initWithItems:segmentedControlItemArray];
_wheelDiameterSegmentedControl.frame = CGRectMake(0,102,290,50);
_wheelDiameterSegmentedControl.selectedSegmentIndex = 0;
_wheelDiameterSegmentedControl.tintColor = [UIColor colorWithRed:0.35 green:0.4 blue:0.9 alpha:1.0];

for (id segment in [_wheelDiameterSegmentedControl subviews]) {
    for (id label in [segment subviews]) {
        if ([label isKindOfClass:[UILabel class]]) {
            UILabel *titleLabel = (UILabel *) label;
            titleLabel.numberOfLines = 0;   
        }   
    }  
}

[_wheelDiameterSegmentedControl addTarget:self
                     action:@selector(pickOne:)
           forControlEvents:UIControlEventValueChanged];

[_wheelDiameterMenuContainer addSubview:_wheelDiameterSegmentedControl];

可悲的是,我无法发布图像,或者我会向您展示我想要的控件：UISegmented Control中的每个段都有两行文本,其中一行换行符合我的要求.

但是,在旋转时,我想保持分段控件的全宽,并且换行在宽段中看起来很傻.所以,在willAnimateRotationToInterfaceOrientation中,我包含了以下代码,字符串中没有换行符：

[_wheelDiameterSegmentedControl setFrame:CGRectMake(0,450,50)];
    [_wheelDiameterSegmentedControl setTitle:@"Nominal: 27 inch" forSegmentAtIndex:0];
    [_wheelDiameterSegmentedControl setTitle:@"Actual: 700c x 23mm" forSegmentAtIndex:1];
    [_wheelDiameterSegmentedControl setTitle:@"Actual: 700c x 20mm" forSegmentAtIndex:2];

再一次,如果我可以插入图像,我会向您显示我想要的图像：一个宽的UISegmented控件,标签中没有换行符(每个标签1行文本).

这是我遇到麻烦的地方.当我旋转回肖像时,我的选择似乎是：

1行标签文本,截断,格式

“实际：7 ……”

当我只是重置UISegmentedControl的大小时

[_wheelDiameterSegmentedControl setFrame:CGRectMake(0,50)];

2行标签文本,格式

“实际：
700c x ……“

当我重置大小并重置字符串值并重新运行将标签的numberOfLines设置为2的代码循环时,使用

NSArray *segmentedControlItemArray = [NSArray arrayWithObjects: @"Nominal:\n27 inch",nil];

    [_wheelDiameterSegmentedControl setTitle:[segmentedControlItemArray objectAtIndex:0] forSegmentAtIndex:0];
    [_wheelDiameterSegmentedControl setTitle:[segmentedControlItemArray objectAtIndex:1] forSegmentAtIndex:1];
    [_wheelDiameterSegmentedControl setTitle:[segmentedControlItemArray objectAtIndex:2] forSegmentAtIndex:2];
    for (id segment in [_wheelDiameterSegmentedControl subviews]) {
        for (id label in [segment subviews]) {
            if ([label isKindOfClass:[UILabel class]]) {
                UILabel *titleLabel = (UILabel *) label;
                titleLabel.numberOfLines = 2;
            }
        }
    }
    [_wheelDiameterSegmentedControl setFrame:CGRectMake(0,50)];

3行标签文字,格式

“实际：
700c x
20毫米”

这是我用上面的强制numberOfLines = 2替换当我首先设置UISegmentedControl时使用的numberOfLines = 0时得到的.

我想要的是我在创建控件时得到的结果

“实际：
700c x 20mm“

但无论我尝试过什么(将字符串和numberOfLines代码放入willRotatetoInterfaceOrientation或didRotateFromInterfaceOrientation;在更改文本之前重新设置UISegmentedControl的框架;在更改文本后重新设置框架……),我可以’得到我漂亮,整洁,两线的标签.我在这里想念的是什么？

for (id segment in [_wheelDiameterSegmentedControl subviews]) {

    for (id label in [segment subviews]) {

        if ([label isKindOfClass:[UILabel class]]) {

            UILabel *titleLabel = (UILabel *) label;

            //inserting line here,to make the frame behave nicely:
            //
            titleLabel.frame = CGRectMake(0,97,50);
            //
            //continuing as before

            titleLabel.numberOfLines = 0;

        }
    }
}

self.yourSlider .. set the height manually (can't easily do it in XIB)
// Now use amazing Herzian technology...
for (id segment in [self.yourSlider subviews])
    for (id label in [segment subviews])
        {
        if ([label isKindOfClass:[UILabel class]])
            {
            UILabel *titleLabel = (UILabel *) label;
            titleLabel .. set the width to say 80,per your layout;
            (the width us typically too low)
            titleLabel.numberOfLines = 0;
            }
        }