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我是 iOS 开发的新手。我想显示UIButton文本 1 秒，再显示 1 秒不显示文本。谁能告诉我iOS中的逻辑？

4

6 回答 6

1

将此方法添加到您的 .m 文件中

- (void) changeNameOfTheButton{
    [self performSelector:@selector(changeNameOfTheButton) withObject:nil afterDelay:1.0];
    if ([button.titleLabel.text isEqualToString:@""]){
        [button setTitle:@"Title 1" forState:UIControlStateNormal];
    }
    else{
        [button setTitle:@"" forState:UIControlStateNormal];
    }
}

然后在您的viewDidLoad中调用上述方法，如下所示：

[self changeNameOfTheButton];
于 2013-02-26T13:12:36.530 回答
1

使用 1.0NSTimer的常规TimeInterval，更改文本UIButton

于 2013-02-26T13:07:30.023 回答
0

try like this...

NSTimer *timer = [NSTimer scheduledTimerWithTimeInterval:1.0f target:self selector:@selector(animateButton) userInfo:nil repeats:YES];


-(void)animateButton
{
    if([button.titleLabel.text isEqualToString:@""])
        [button setTitle:@"your text" forState:UIControlStateNormal];
    else
        [button setTitle:@"" forState:UIControlStateNormal];
}
于 2013-02-26T13:18:13.637 回答
0

用于NSTimer设置更改标题的时间间隔。

在中添加以下行viewDidLoad

 [NSTimer timerWithTimeInterval:1.0 target:self selector:@selector(ChangeButtonText) userInfo:nil repeats:YES];

定时器触发时调用的函数。在这里更改按钮标题。将此方法复制到您的.m文件中。

  -(void)ChangeButtonText
  {
   if([_button.titleLabel.text isEqualToString:@"buttonName"])
    {
        [_button setTitle:@"" forState:UIControlStateNormalState];

     }
   else
    {
       [_button setTitle:@"buttonName" forState:UIControlStateNormalState];

    }
}
于 2013-02-26T13:14:18.883 回答
0

这对我有用..

- (void)viewDidLoad
{
    [super viewDidLoad];
    [btn setTitle:@"Hello" forState:UIControlStateNormal];
    [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(btnPress) userInfo:nil repeats:YES];

}


-(void)btnPress
{
    if([btn.currentTitle isEqualToString:@"Hello"])
    {
        [btn setTitle:@"" forState:UIControlStateNormal];
    }
    else
        [btn setTitle:@"Hello" forState:UIControlStateNormal];
}
于 2013-02-26T13:14:51.500 回答
0

您可以使用：

[button setTitle:@"text" forState:UIControlStateNormalState];

对于空：

[button setTitle:@"" forState:UIControlStateNormalState];
于 2013-02-26T13:07:47.747 回答