问题setText UITextView

时间:2009-12-09 17:32:53

标签: iphone uitextview android-mapview

嗨我有问题。我有2个viewcontroller,第一个是mapView,它实现了函数“calloutAccessoryControlTapped”来点击mapView上注释的按钮; 在第二个只有一个UITextView。 我想在单击注释上的按钮后更改第二个控制器中的UITextView文本(并显示SecondViewController);这是我的代码

(FirstViewController)

标题

@interface FirstViewController<MKMapViewDelegate>{ 
IBOutlet MKMapView *mapView;
SecondViewController *secondV;}
@end

实施

@implementation FirstViewController

- (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control{
secondV = [[SecondViewController alloc] initWithNibName:@"SecondViewController" bundle:nil];
NSString *myS = @"some text here";
[secondV.myTextView setText:myS];

//从此切换到第二个视图  [self presentModalViewController:secondV animated:YES];     @end

(SecondViewController)

标题

@interface SecondViewController{ 
IBOutlet UITextView *myTextView;
}

@property(nonatomic, retain)UITextView *postitTextView;
- (IBAction)backToMAp;
- (void)setText:(NSString *)string;
@end

实施

@implementation SecondViewController

- (IBAction)backToMAp{

//返回第一视图;  [self dismissModalViewControllerAnimated:YES];}

- (void)setText:(NSString *)string{ 
myTextView.text = string;}

在这段代码中我点击按钮([self presentModalViewController:secondV animated:YES];)注释时第一次显示第二个视图但UITextView的文本没有改变,当我回到FirstView时([self dismissModalViewControllerAnimated:YES];)然后再次点击按钮再次切换到secondView UITextView的文本更改.....

对不起长线程和我糟糕的英语!!

谢谢堆叠!

2 个答案:

答案 0 :(得分:0)

您的代码中有两个UITextView:myTextView和postitTextView。在IB你有没有在你的UIView中找到合适的人?

答案 1 :(得分:0)

我忘记将myTextView设为@property

@property(nonatomic, retain)UITextView *myTextView;

我忘了在实现中插入@syntesize

@syntesize myTextView;