ios的文字滚动

@property (weak,nonatomic) IBOutletUILabel *textNameLabel;

@property (nonatomic,strong)NSMutableArray *textArray;

@end

@implementation ViewController

- (void)viewDidLoad {

    [superviewDidLoad];

    // Do any additional setup after loading the view, typically from a nib.

    

    CALayer *subLayer = [CALayerlayer];

    [subLayer setBounds:CGRectMake(0,0, 200,200)];

    

    [subLayer setPosition:CGPointMake(100,100)];

    

    [subLayer setBackgroundColor:[UIColorredColor].CGColor];

    

    [self.view.layeraddSublayer:subLayer];

    

    

    self.textArray = [NSMutableArrayarrayWithObjects:@"他就会很健康很好",@"海陆空艰苦奋斗了",@"sggsffgs",@"这个减肥的空间",nil];

    

    

}

//改变文字

- (IBAction)changeTestAction:(UIButton *)sender {

    

    staticint i=0;

    

    if (i==3) {

        

        i=0;

    }else

    {

        i++;

    }

    

    self.textNameLabel.text =self.textArray[i];

    CATransition *transition = [[CATransitionalloc] init];

    

    transition.type =@"push";

    

    transition.subtype =kCATransitionFromTop;

    

    transition.duration=0.1;

    

    [self.textNameLabel.layeraddAnimation:transition forKey:nil];

    

    

}

- (void)didReceiveMemoryWarning {

    [superdidReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

@end