UIAlertView之后刷新UIButton標題

Question

我有一個帶有標題的按鈕，從情節提要中設置了“ 有趣的小事”

在viewDidLoad中，我更改標題

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

然后當另一個按鈕被單擊時

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

但是在警報顯示后，按鈕的標題更改回Fun

Answer 1

.h文件保留此

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

使用它來更改按鈕標題

[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
 }
 }