走马灯

走马灯

NSString *str = @"人生若只如初见，何事秋风悲画扇。";

self.scrollLabel = [[UILabel alloc] initWithFrame:CGRectMake(0,100,self.view.frame.size.width, 44)];

self.scrollLabel.text = str;

[self.view addSubview:self.scrollLabel];

self.secondLabel = [[UILabel alloc] initWithFrame:CGRectMake(self.scrollLabel.frame.origin.x+self.scrollLabel.frame.size.width, self.scrollLabel.frame.origin.y, self.scrollLabel.frame.size.width, self.scrollLabel.frame.size.height)];

self.secondLabel.font = self.scrollLabel.font;

self.secondLabel.text = self.scrollLabel.text;

[self.view addSubview:self.secondLabel];

[self addAnimation];

- (void)addAnimation{

CGRect scrollFrame = self.scrollLabel.frame;

CGRect secondFrame = self.secondLabel.frame;

[UIView animateWithDuration:4 delay:0 options:UIViewAnimationOptionCurveLinear animations:^{

self.scrollLabel.frame = CGRectMake(-self.scrollLabel.frame.size.width, self.scrollLabel.frame.origin.y, self.scrollLabel.frame.size.width, self.scrollLabel.frame.size.height);

self.secondLabel.frame = CGRectMake(0, self.secondLabel.frame.origin.y, self.secondLabel.frame.size.width, self.secondLabel.frame.size.height);

} completion:^(BOOL finished) {

self.scrollLabel.frame = scrollFrame;

self.secondLabel.frame = secondFrame;

[self addAnimation];

}];

}