实现Label中文字的滚动(跑马灯形式)

//这是LabelTest.m 文件

#import "LabelTest.h"

@interface LabelTest ()
@property(nonatomic,strong)MarqueeLabel *lab;

@end

@implementation LabelTest

- (void)viewDidLoad {
    [super viewDidLoad];
 
   _lab=[[MarqueeLabel alloc] init];
    _lab.frame=CGRectMake(100, 300, 200, 30);
    _lab.backgroundColor=[UIColor yellowColor];
    _lab.text=@"This is a long string, that's also an attributed string, which works just as well!";
    //文字滚动的类型
    //首尾相连(从左到右)
    _lab.marqueeType = MLContinuous;
    //文字开始滚动时很快,到最后会变慢,可以点进去看类型
    _lab.animationCurve = UIViewAnimationOptionCurveEaseOut;

    //从首到尾 在从尾到首循环
//    _lab.marqueeType = MLLeftRight;

    //首尾相连(从右到做左)
//   _lab.marqueeType = MLContinuousReverse;

    
    //暂停按钮
    UIButton *btn=[UIButton buttonWithType:(UIButtonTypeCustom)];
    btn.frame=CGRectMake(50, 200, 100, 30);
    btn.backgroundColor=[UIColor redColor];
    [btn setTitle:@"暂停" forState:(UIControlStateNormal)];
    [btn addTarget:self action:@selector(labelizeSwitched) forControlEvents:(UIControlEventTouchUpInside)];
    
    
    
    UIButton *btn2=[UIButton buttonWithType:(UIButtonTypeCustom)];
    btn2.frame=CGRectMake(50, 250, 100, 30);
    btn2.backgroundColor=[UIColor redColor];
    [btn2 setTitle:@"开始" forState:(UIControlStateNormal)];
    [btn2 addTarget:self action:@selector(kaishi) forControlEvents:(UIControlEventTouchUpInside)];
    [self.view addSubview:btn2];
    
    [self.view addSubview:btn];

    
    [self.view addSubview:_lab];
    

    
}
//暂停(文字重置)
- (void)labelizeSwitched
{
    //暂停(重置文字)
    [_lab setLabelize:YES];

    //这种类型暂停 文字重置
//    [_lab resetLabel];
    //这种类型暂停 文字不重置
//    [_lab pauseLabel];
    
}
//开始
- (void)kaishi
{
    //对应 文字不重置暂停的开始
//    [_lab unpauseLabel];
    //对应 文字重置暂停的开始
//    [_lab restartLabel];
    // 文字重置对应的(开始)
    [_lab setLabelize:NO];

}
@end
//附图片

 

//这是LabelTest.h 文件

 

#import <UIKit/UIKit.h>
#import "MarqueeLabel.h"

@interface LabelTest : UIViewController
@property (weak, nonatomic) IBOutlet MarqueeLabel *Label1;

@end

//附图片

//这种方法需要在工程中导入 MarqueeLabel.h MarqueeLabel.m 文件 .在需要的地方导入头文件即可 然后把UILabel* Label; 写成这种形式的  MarqueeLabel *Label1;

 

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