Ios是否将标签（歌曲标题）从右侧移动到左侧？

如何移动标签？ 我想显示一首歌的标题，从右边移动到左边，持续时间我可以设置。正如你在汽车收音机上看到的那样。当标签离开屏幕时，它应从右侧重新出现

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谢谢你

Iphone没有为UILabels提供这样的功能，你需要为此设置标签动画

请参阅此链接

只需拖放MarqueeLabel.h和MarqueeLabel.m文件，并按如下方式创建标签：

MarqueeLabel *rightLeftLabel = [[MarqueeLabel alloc] initWithFrame:CGRectMake(10, 260, self.view.frame.size.width-20, 20) rate:50.0f andFadeLength:10.0f];
rightLeftLabel.numberOfLines = 1;
rightLeftLabel.shadowOffset = CGSizeMake(0.0, -1.0);
rightLeftLabel.textAlignment = NSTextAlignmentRight;
rightLeftLabel.textColor = [UIColor colorWithRed:0.234 green:0.234 blue:0.234 alpha:1.000];
rightLeftLabel.backgroundColor = [UIColor clearColor];
rightLeftLabel.font = [UIFont fontWithName:@"Helvetica-Bold" size:17.000];
rightLeftLabel.marqueeType = MLRightLeft;
rightLeftLabel.text = @"This text is not as long, but still long enough to scroll, and scrolls the same speed but to the right first!";
[self.view addSubview:rightLeftLabel];

他们创建了UIView子类，并设置了UIView子视图的UILabel动画

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希望这对您有所帮助：

Iphone不为UILabels提供此类功能，您需要为其设置标签动画

     UILabel *toastLabel = [[UILabel alloc]init*];
     toastLabel.text = @"Our toast text";
     [toastLabel setHidden:TRUE];
     [toastLabel setAlpha:1.0];
     CGPoint location;
     location.x = 0;
     location.y = 400;
     toastLabel.center = location;
     location.x = 500;
     location.y = 400;
     [toastLabel setHidden:FALSE];
     [UIView animateWithDuration:8 animations:^{
         toastLabel.alpha = 0.0;
         toastLabel.center = location;
     }];

请参阅此链接

只需拖放MarqueeLabel.h和MarqueeLabel.m文件，并按如下方式创建标签：

MarqueeLabel *rightLeftLabel = [[MarqueeLabel alloc] initWithFrame:CGRectMake(10, 260, self.view.frame.size.width-20, 20) rate:50.0f andFadeLength:10.0f];
rightLeftLabel.numberOfLines = 1;
rightLeftLabel.shadowOffset = CGSizeMake(0.0, -1.0);
rightLeftLabel.textAlignment = NSTextAlignmentRight;
rightLeftLabel.textColor = [UIColor colorWithRed:0.234 green:0.234 blue:0.234 alpha:1.000];
rightLeftLabel.backgroundColor = [UIColor clearColor];
rightLeftLabel.font = [UIFont fontWithName:@"Helvetica-Bold" size:17.000];
rightLeftLabel.marqueeType = MLRightLeft;
rightLeftLabel.text = @"This text is not as long, but still long enough to scroll, and scrolls the same speed but to the right first!";
[self.view addSubview:rightLeftLabel];

他们创建了UIView子类，并设置了UIView子视图的UILabel动画

希望这对您有所帮助：

     UILabel *toastLabel = [[UILabel alloc]init*];
     toastLabel.text = @"Our toast text";
     [toastLabel setHidden:TRUE];
     [toastLabel setAlpha:1.0];
     CGPoint location;
     location.x = 0;
     location.y = 400;
     toastLabel.center = location;
     location.x = 500;
     location.y = 400;
     [toastLabel setHidden:FALSE];
     [UIView animateWithDuration:8 animations:^{
         toastLabel.alpha = 0.0;
         toastLabel.center = location;
     }];