为2个国家设置按钮标题的更好方法

Question

这就是我现在正在做的事情

[self.distanceFilter setTitle:strValueForDistanceFilter forState:UIControlStateNormal];
[self.distanceFilter setTitle:strValueForDistanceFilter forState:UIControlStateSelected];

这样做会有什么更好的方法，以便更改僵尸UIControlStateNormal的标题，即使选择了按钮

我尝试过的事情：

[self.distanceFilter setTitle:strValueForDistanceFilter forState:UIControlStateNormal | UIControlStateSelected];

事情是UIControlStateNormal是0.所以UIControlStateNormal | UIControlStateSelected只是UIControlStateSelected。这意味着当未选择按钮时标题不会改变。

Answer 1

您可以使用|执行按位OR，如下所示：

[self.distanceFilter setTitle:strValueForDistanceFilter forState:UIControlStateNormal | UIControlStateSelected];

Answer 2

嗯，对于UIButton上的某个类别来说，这听起来很完美：

- (void)setTitleForAllStates:(NSString *)title
{
    for (UIControlState i = 0; i <= 3; i++)
        [self setTitle:title forState:i];
}

Answer 3

其他方式，

#define UIControlStateAll UIControlStateNormal | UIControlStateSelected | UIControlStateHighlighted

[self.distanceFilter setTitle:strValueForDistanceFilter forState:UIControlStateAll];