//源Controller中跳转方法实现
MKDialogController *controller = [[MKDialogController alloc] init];
controller.modalTransitionStyle = UIModalTransitionStyleCrossDissolve; // 跳转时的动画效果，可以修改
if ([[UIDevice currentDevice].systemVersion floatValue] >= 8.0) {
controller.providesPresentationContextTransitionStyle = YES;
controller.definesPresentationContext = YES;
controller.modalPresentationStyle = UIModalPresentationOverCurrentContext;
[self presentViewController:controller animated:YES completion:nil];
} else {
self.view.window.rootViewController.modalPresentationStyle = UIModalPresentationCurrentContext;
[self presentViewController:controller animated:NO completion:nil];
self.view.window.rootViewController.modalPresentationStyle = UIModalPresentationFullScreen;
}
通过上面的方法模态出的新页面的self.view设置有透明的时候，就可以看到上一层controller的页面。
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