Question

如何移动标签？我想显示一个歌曲标题，从右侧移动到左侧，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，它应该从右侧重新出现

谢谢

Answer 1

Iphone不为UILabels提供此类功能，您需要为其设置动画标签。

请参阅此链接 https://github.com/cbpowell/MarqueeLabel

只需拖放MarqueeLabel.h＆amp; MarqueeLabel.m文件并创建Label如下：

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子类并为UIVabel设置动画，这些UILabels是UIView的子视图。

希望这可以帮到你:)

Answer 2

     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;
     }];

Ios将标签（歌曲标题）从右侧移到左侧？

2 个答案: