iOS buttonWithType:101 苹果私有api

无意中发现，有人创建UIButton这样写

UIButton *previousButton = [UIButtonbuttonWithType:101];

一看原来是私有api

UIButton *previousButton = [UIButton buttonWithType:101];[previousButton setTitle:@"<" forState:UIControlStateNormal];previousButton.frame = CGRectMake(0.f, 0.f, 30.f, 80.f);previousButton.center = CGPointMake(previousButton.frame.size.width / 2.f, pagingView.center.y);[previousButton addTarget:pagingView action:@selector(scrollToPreviousPage) forControlEvents:UIControlEventTouchUpInside];[self.view addSubview:previousButton];

　　

 

更多UIButton 私有api

http://www.yifeiyang.net/iphone-development-skills-of-the-private-api-3-uibutton/

 

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