IOS模仿UIButton添加事件

// 自定义控件中添加如下方法

- (void)addTarget:(nullable id)target Selector:(SEL)selector objects:(NSArray *)objects

{

    // 判断参数是否为空

    if (!objects) return;

    Class appearanceClass = NSClassFromString(@"_UIAppearance");

    // 如果对象为_UIAppearance，直接返回

    if ([target isMemberOfClass:appearanceClass]) return;

    NSMethodSignature *methodSignate = [[target class] instanceMethodSignatureForSelector:selector];

    NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:methodSignate];

    // 3. 设置相关属性

    // 调用者

    invocation.target = target;

    // 调用参数

    [invocation setArgument:&objects atIndex:2];

    // 调用方法

    invocation.selector = selector;

    // 获取除self、_cmd的参数个数

    [invocation invoke];

}

调用方法:

[view addTarget:self Selector:@selector(onClickTest:) objects:@[@"1234qwer",@"qwer1234"]];

-(void)onClickTest:(NSArray *)array

{

    NSLog(@"%@",array);

}