UIAlertView 后 UIButton 标题刷新

Question

我有一个标题为 Fun 的按钮是从情节提要中设置的

在 viewDidLoad 中我更改了标题

self.catBut.titleLabel.text = @"Random";

然后当另一个按钮被点击时

 UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Title alert" message:@"Alert message" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
    [alert show];

但在警报显示后，按钮的标题变回Fun

Answer 1

.h 文件保留这个

@property(non atomic,strong)IBOutlet UIButton *catBut;

用它来改变按钮标题

[self.catBut setTitle:@"Random" forState:UIControlStateNormal]; 

使用UIAlertViewDelegate方法

UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Title alert" message:@"Alert message" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
alert.tag==100; //if u used multiple alert in your VC, use to identify the Tag
  [alert show];


- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex    
{
if(alertView.tag==100)
{
 [self.catBut setTitle:@"Random" forState:UIControlStateNormal]; 
 }
else
  {
   // anotehr mthod optiobns
 }
 }