我正在尝试组合一个应用程序，该应用程序具有一组文本，当用户按下按钮翻页时，这些文本可以随机化。基本上，按下按钮会做两件事；翻页并将文本更改为随机包含的短语。
我试图通过将页面卷曲到同一个 XIB 文件中来实现这一点，并且只更改文本。页面卷曲有效，但不会更改文本。不知道我在这里做错了什么
这是我的代码：
@implementation InfoViewController
@synthesize isViewPushed;
// Implement viewDidLoad to do additional setup after loading the view.
- (void)viewDidLoad {
if(isViewPushed == NO) {
{ UIButton * btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
btn.frame = CGRectMake(200, 300, 100, 50);
[btn setTitle:@"Next" forState:UIControlStateNormal];
[btn addTarget:self action:@selector(cancel_Clicked:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:btn];
}
{ UIButton * btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
btn.frame = CGRectMake(20, 300, 100, 50);
[btn setTitle:@"Previous" forState:UIControlStateNormal];
[btn addTarget:self action:@selector(next_clicked:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:btn];
}
int text = rand() % 5;
switch (text) {
case 0:
textview.text = @"Hello 1" ;
break;
case 1:
textview.text = @"Hello 2" ;
break;
case 2:
textview.text = @"Hello 3" ;
break;
case 3:
textview.text = @"Hello 4" ;
break;
case 4:
textview.text = @"Hello 5" ;
break;
}
}
}
-(void) cancel_Clicked:(id)sender {
[self.navigationController dismissModalViewControllerAnimated:YES];
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:1.0];
[UIView setAnimationTransition:UIViewAnimationTransitionCurlDown forView:self.view cache:YES];
[UIView commitAnimations];
}
-(void) next_clicked:(id)sender {
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:1.0];
[UIView setAnimationTransition:UIViewAnimationTransitionCurlUp forView:self.view cache:YES];
[UIView commitAnimations];
}
任何帮助都会很棒。