MFMessageComposeViewController*messageController=[[MFMessageComposeViewControlleralloc]init];[UINavigationBarappearance].barTintColor=[UIColorcolorWithRed:0.0f/255.0fgreen:127.0f/255.0fblue:254.0f/255.0falpha:1.0];[[messageControllernavigationBar]setTintColor:[UIColorwhiteColor]];messageControll

在我的MainViewController中，我通过这个展示了另一个ViewController:MessageViewController*messageController=[[MessageViewControlleralloc]initWithNibName:nilbundle:nil];[messageControllersetModalPresentationStyle:UIModalPresentationFullScreen];[messageControllersetModalTransitionStyle:UIModalTransitionStyleFlipHori