我在我的应用程序中创建了滑块。如何在我的代码中添加循环。因为我的标签文本只滑动一次，但我想在标签上标注文本重复（循环）。怎么可能？如何创建标签文本滑块

我的标签滑块代码

让globalCounter为全局变量

globalCounter=0; 
if(nameArray.count>0){ 

[self changeLable]; 

}

然后

-(void)changeLable{ 

if(!(globalCounter<nameArray.count)){ 
    return; 
} 


NSLog(@"globalCounter %d",globalCounter); 

[UIView animateWithDuration:1 
         delay:0.5 
        options: UIViewAnimationOptionTransitionCrossDissolve 
       animations:^{ 


       } 
       completion:^(BOOL finished) { 

        [lblTitle setText:[nameArray objectAtIndex:globalCounter]]; 
        globalCounter++; 

        [self performSelector:@selector(changeLable) withObject:nil afterDelay:1]; 

       }]; 


}

编辑

-(void)changeLable{ 

if(!(globalCounter<nameArray.count)){ 
globalCounter=0; 
    } 


NSLog(@"globalCounter %d",globalCounter); 

[UIView animateWithDuration:1 
         delay:0.5 
        options: UIViewAnimationOptionTransitionCrossDissolve 
       animations:^{ 


       } 
       completion:^(BOOL finished) { 

        [lblTitle setText:[nameArray objectAtIndex:globalCounter]]; 
        globalCounter++; 

        [self performSelector:@selector(changeLable) withObject:nil afterDelay:1]; 

       }]; 


}

来源

2016-09-07 ankur kumawat

使用的Web视图，而不是标签和使用HTML语法 –

适用于您的文字跑马灯效果使用[MarqueeLabel（https://github.com/cbpowell/MarqueeLabel） – pkc456

http://stackoverflow.com/questions/22397122 /如何移动文本从右到左 - in-ios-programatically/22397613＃22397613 –

不喜欢

globalCounter=0; 
if(des.count>0){ 
    [_label setText:[des objectAtIndex:globalCounter]]; 
    [self changeLable]; 

}

，并呼吁像

-(void)changeLable{ 

if(globalCounter < des.count){ 



[UIView animateWithDuration:0. 
         delay:0.5 
        options: UIViewAnimationOptionTransitionCrossDissolve 
       animations:^{ 


       } 
       completion:^(BOOL finished) { 

        if(globalCounter>=des.count){ 
         globalCounter=0;//set counter to zero after it exceeds array count to repeat text change round repeated 
        }else 
        { 
          [_label setText:[des objectAtIndex:globalCounter]]; 
         globalCounter++; 
         [self performSelector:@selector(changeLable) withObject:nil afterDelay:1]; 
        } 




       }]; 
} 


}

来源

2016-09-07 11:11:57

检查更新的答案 –

你的问题得到解决或不 –

尝试下面的代码，它可以帮助：

-(void)changeLable{ 

NSLog(@"globalCounter %d",globalCounter); 

[UIView animateWithDuration:1 
         delay:0.5 
        options: UIViewAnimationOptionTransitionCrossDissolve 
       animations:^{ 

        [lblTitle setText:[nameArray objectAtIndex:globalCounter]]; 
       } 
       completion:^(BOOL finished) { 

        if(globalCounter>nameArray.count)){ 

         globalCounter=0;//set counter to zero after it exceeds array count to repeat text change round repeated 

        }else{ 

         globalCounter++; 

        } 

        [self performSelector:@selector(changeLable) withObject:nil afterDelay:1]; 

       }]; 

}

来源

2016-09-07 09:47:21

我使用您的代码，但数组第一轮后崩溃我的应用程序错误显示如下： - - [__ NSArrayI objectAtIndex：]：索引2超越边界[0 .. 1]' –

Error.I现在尝试了您的代码，它崩溃了。由于uncau ght异常'NSRangeException'，原因：'*** - [__ NSArrayM objectAtIndex：]：index 4 beyond bounds [0 .. 3]' – user3182143

'您的代码工作正常man.it调用所有数组对象。 – user3182143

方法这就是我的回答brother.Sorry我不能马上回答，因为我有一些干活下载并运行你的project.First首先崩溃，因为你处理错误的数组count.So它绑定数组。然后，我设置条件内的黑色。

-(void)changeLable 
{ 

    NSLog(@"globalCounter %d",globalCounter); 

    [UIView animateWithDuration:1 
         delay:0.5 
        options: UIViewAnimationOptionTransitionCrossDissolve 
       animations:^{ 

       } 
       completion:^(BOOL finished) 
       { 
        if(globalCounter<des.count) 
        { 
         _label.text = @""; 
         [_label setText:[des objectAtIndex:globalCounter]]; 
         globalCounter++; 
        } 
        else 
         globalCounter=0; 
        [self performSelector:@selector(changeLable) withObject:nil afterDelay:1]; 
      }]; 
}

来源

2016-09-07 11:21:02 user3182143

如何创建标签文本滑块

我的标签滑块代码

编辑

回答

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