在我的子类中NSObject我想打电话给类似的东西
[[self navController] presentModalViewController:myView animated:YES];
但我的尝试都没有成功。如果我不在 的子类中，如何调用模态视图UIViewController?
解决方案：
#import "myProjectNameAppDelegate.h"
// ...
MyViewController *myView = [[MyViewController alloc] init];
myProjectNameAppDelegate *appDelegate = (myProjectNameAppDelegate *)[[UIApplication sharedApplication] delegate];
[[appDelegate navController] presentModalViewController:myView animated:YES];
调用当前模态视图控制器的更好方法是，传递viewcontroller to the NSobject班级。打电话给nsobject函数从uiviewcontroller这是带有邮件示例的代码
在视图控制器中 //你当前的视图
[nsobjectclassObject OpenMailComposer:self];//这将把视图控制器带到NSobject class
在 NSObject 类中 //可能是共享类
-(void)OpenMailComposer:(UIViewController*)view
{
viewControllertoShow = view; // viewControllertoShow is UIVIewcontroller object
MFMailComposeViewController *mailView = [[MFMailComposeViewController alloc]init];
mailView.mailComposeDelegate = self;
[mailView setSubject:@"Hey! check this out!"];
[viewControllertoShow presentModalViewController:mailView animated:YES];
}
对于解雇NSObject class你可以执行以下操作
[viewControllertoShow dismissViewControllerAnimated:YES]
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