效果：弹出半页控制器；关键字：modalPresentationStyle、UIModalPresentationOverCurrentContext

UIViewController *rootVC = [UIApplication sharedApplication].keyWindow.rootViewController;

XHDLoanConfirmViewController *presentedVC = [[XHDLoanConfirmViewController alloc] init];

if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0) {

// presentedVC 为被弹出的控制器

presentedVC.modalPresentationStyle = UIModalPresentationOverCurrentContext;

} else {

// rootVC 为window的rootViewController

rootVC.modalPresentationStyle = UIModalPresentationCurrentContext;

}

presentedVC.view.backgroundColor = [UIColor colorWithWhite:0.1 alpha:0.4];

// self 为当前控制器

[self presentViewController:presentedVC animated:NO completion:nil];

PS：此处涉及到一项技术，弹出的半页其实是跳转到下一个页面，为了有弹出半夜的效果，跳转的时候截取了当前页的屏幕图片作为半夜的背景。如想知道如何获取截屏，联系我。