如何使一个标签的文本出现在多个视图上？

Question

I'm using a scroll view with 3 views, and I need to place one label that shows up on each view,

the views are on separate view controllers: in view controller.h

#import "PagerViewController.h"

@interface ViewController : PagerViewController {

}

@property (strong, nonatomic) IBOutlet UIView *View1;
@property (strong, nonatomic) IBOutlet UIView *View2;
@property (strong, nonatomic) IBOutlet UIView *View3;

I've placed them as (in ViewController.m)

[self addChildViewController:[self.storyboard instantiateViewControllerWithIdentifier:@"View1"]];

Should I fix an NSString and Outlet to do this?

I need the labels to move with the scroll not to be separate from each other.

Answer 1

如果您需要分离这些视图，那么一种易于维护的解决方案可以是三个分离的标签和一个函数（updateLabels :)，其中三个标签被更新为相同的值。

Answer 2

What you want, cannot be done with a single UILabel . You will have to create 3 separate labels and write the logic that will update all of them.

Create the UILabel outlets and write a method something similar to the method below:

- (void)updateLabels:(NSString *)text
{
    self.label1.text = text;
    self.label2.text = text;
    self.label3.text = text;
}

This is just the way UIView 's work and you cannot make them draw outside of their bounds.

I suggest you follow up on more iOS basics before going into complex layouts.