我要在IOS版本开发一个应用,但是我是安卓开发的,如何在IOS中实现一个类似startActivityForResult的效果?需要展示一个新的view controller,然后在新view controller关闭时候向当前view controller返回一个control。同时还需要触发一个回调方法。
如何在ios中实现这些?
有很多种方法实现。
首先,在应用的delegate中建立一个导航控制器:
self.viewController = [[RootViewController alloc] initWithNibName:@"RootViewController" bundle:nil];
self.navigationController = [[ UINavigationController alloc ] initWithRootViewController:self.viewController ];
self.window.rootViewController = self.navigationController;
[self.window makeKeyAndVisible];
展示新的view controller:
OtherViewController *ovc = [[ OtherViewController alloc ] initWithNibName:@"OtherViewController" bundle:nil ];
[ self.navigationController pushViewController:ovc animated:YES ];
返回:
[ self.navigationController popViewControllerAnimated:YES ];
等到回调之后,在工程中加一个protocol:
@protocol AbstractViewControllerDelegate <NSObject>
@required
- (void)abstractViewControllerDone;
@end
然后对需要回调的view controller 进行delegate触发:
@interface OtherViewController : UIViewController <AbstractViewControllerDelegate>
@property (nonatomic, assign) id<AbstractViewControllerDelegate> delegate;
@end
最后,获得一个新的view controller:
OtherViewController *ovc = [[ OtherViewController alloc ] initWithNibName:@"OtherViewController" bundle:nil ];
ovc.delegate = self;
[ self.navigationController pushViewController:ovc animated:YES ];
等到关闭了viewcontroller,进行:
[self.delegate abstractViewControllerDone];
[ self.navigationController popViewControllerAnimated:YES ];
在符合刚刚那个protocol的根viewcontroller中,加上这个方法:
-(void) abstractViewControllerDone {
}
这样你就做了一个调用,还要很多设置,根据你自己的需求。