216，页面之间的传值(二)

AppDelegate.h:

#import

@class OneViewController;

@interface AppDelegate : UIResponder <UIApplicationDelegate>

@property (strong, nonatomic) UIWindow *window;

@property (nonatomic,strong) OneViewController *oneView;

@end

AppDelegate.m:

#import "AppDelegate.h"

#import "OneViewController.h"

@interface AppDelegate ()

@end

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

    //创建window

    self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];

    //创建第一个界面

    UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"OneViewController" bundle:nil];

    self.oneView = [storyboard instantiateInitialViewController];

    //创建一个UINavigationController

    UINavigationController *navigation = [[UINavigationController alloc] init];

    [navigation pushViewController: self.oneView animated:YES];

    self.window.rootViewController = navigation;

    [self.window makeKeyAndVisible];

    return YES;

}

@end

Person.h:

#import

@interface Person : NSObject

@property (nonatomic,strong) NSString *name;

@property (nonatomic,strong) NSString *age;

- (instancetype)initWithName:(NSString  *)name WithAge:(NSString *)age;

+ (instancetype)personWithName:(NSString  *)name WithAge:(NSString *)age;

@end

Person.m:

#import "Person.h"

@implementation Person

- (instancetype)initWithName:(NSString *)name WithAge:(NSString *)age{

    self = [super init];

    if (self) {

        self.name = name;

        self.age = age;

    }

    return self;

}

+ (instancetype)personWithName:(NSString *)name WithAge:(NSString *)age{

    return [[self alloc] initWithName:name WithAge:age];

}

@end

OneViewController.h:

#import

@class Person;

@class OneViewController;

@protocol OneViewControllerDelegate <NSObject>

- (void)oneViewWithSelf:(OneViewController *) oneView WithPerson:(Person *) person;

@end

@interface OneViewController : UIViewController

@property (nonatomic,weak) id<OneViewControllerDelegate> delegate;

@end

OneViewController.m:

#import "OneViewController.h"

#import "TwoViewController.h"

#import "Person.h"

@interface OneViewController ()

@property (weak, nonatomic) IBOutlet UITextField *name;

@property (weak, nonatomic) IBOutlet UITextField *age;

- (IBAction)sendValue:(UIButton *)sender;

@end

@implementation OneViewController

- (IBAction)sendValue:(UIButton *)sender {

    TwoViewController *twoView = [TwoViewController twoView];

    self.delegate = twoView;

    [self.navigationController pushViewController:twoView animated:YES];

    Person *person = [Person personWithName:self.name.text WithAge:self.age.text];

    if ([self.delegate respondsToSelector:@selector(oneViewWithSelf:WithPerson:)]) {

        

       [self.delegate oneViewWithSelf:self WithPerson:person];

    }

}

@end

TwoViewController.h:

#import

@interface TwoViewController : UIViewController

@property (weak, nonatomic) IBOutlet UILabel *name;

@property (weak, nonatomic) IBOutlet UILabel *age;

+ (instancetype)twoView;

@end

TwoViewController.m:

#import "TwoViewController.h"

#import "OneViewController.h"

#import "Person.h"

@interface TwoViewController () <OneViewControllerDelegate>

@property (nonatomic,strong) Person *personInfo;

@end

@implementation TwoViewController

+ (instancetype)twoView{

    return [[TwoViewController alloc] initWithNibName:@"TwoViewController" bundle:nil];

}

- (void)viewDidLoad{

    self.name.text = self.personInfo.name;

    self.age.text = self.personInfo.age;

}

- (void)oneViewWithSelf:(OneViewController *)oneView WithPerson:(Person *)person{

    self.personInfo = person;

}

@end

注：另外一种方法，可以采用全局变量来存值与取值，共享到页面