为 UIButton 添加目标 - iOS

Add target for UIButton - iOS(为 UIButton 添加目标 - iOS)

问题描述

任何人都可以帮助我了解如何添加操作以使用 UIButton 调用以下方法.

Anyoone can help me on how to add action to call the following method using UIButton.

-(void)navigatePics:(id)sender andIndex:(NSInteger *)index{}

推荐答案

使用 button.setTag:(NSInteger) 方法将索引作为标签添加到 UIButton.

Use the button.setTag:(NSInteger) method to add the index to the UIButton as a tag.

UIButton *button = ...;
[button setTag:1234];
[button addTarget:self action:@selector(navigatePics:) forControlEvents:UIControlEventTouchUpInside];

然后在 navigatePics 中读取标签.

Then in navigatePics, read the tag.

-(void)navigatePics:(UIButton *)sender
{
 int index = sender.tag;
 // index = 1234;
}

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