ViewController間でのデータのやりとり ←

ViewController間のデータのやりとりの第二弾。

SecondViewController から ViewControllerにデータを渡します。

さっきと逆です！


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ViewController.h


@property(nonatomic,retain) NSString *testStr;

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ViewController.m


@synthesize testStr;

-(void)pushBtn1 {
// SecondViewControllerを生成
SecondViewController *vc = [[SecondViewController alloc] initWithNibName:@"SecondViewController" bundle:nil];

vc.parentVC = self;
// ナビゲーションによる画面遷移を実行
[self.navigationController pushViewController:vc animated:YES];
[vc release];
}

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SecondViewController.h


//@interface ViewController2 : UIViewControllerの上に書いてください
@class ViewController;　

@property (nonatomic,retain) ViewController *parentVC;


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SecondViewController.m


#import "ViewController.h"

@synthesize parentVC = _parentVC;

-(void)goBack {
//SecondViewから値を戻す
self.parentVC.testStr = @"test";
[self.navigationController popViewControllerAnimated:YES];
}

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さっきよりずっと複雑です。

自分も何度か見直しながらやっています。