CABasicAnimation在完成1个周期后回到其原始位置

Question

请不要参考CABasicAnimation returns to the original position before the next animation和Objective-C - CABasicAnimation applying changes after animation?和CABasicAnimation rotate returns to original position 我已经尝试过了。

below code does,bottom->top->goes left->back to it’s original position. 
bottom->top->goes left->back to its original position. 
I need bottom->top->goes left.bottom->top->goes left so on… 

-(void)addUpDownAnimationForButton:(UILabel*)label 
{ 
    CABasicAnimation * bottomAnimation ; 
    bottomAnimation =[CABasicAnimation animationWithKeyPath:@"transform.translation.y"]; 
    [bottomAnimation setValue:@"animation1" forKey:@"id"]; 
    bottomAnimation.delegate = self; 
    [UIView setAnimationDidStopSelector:@selector(animationDidStop:finished:)]; 
    bottomAnimation.duration = 2.0; 
    bottomAnimation.fromValue = [NSNumber numberWithFloat:13]; 
    bottomAnimation.toValue = [NSNumber numberWithFloat:-7]; 
    bottomAnimation.repeatCount = 0; 
    bottomAnimation.fillMode = kCAFillModeForwards; 
    bottomAnimation.removedOnCompletion = NO; 
    [btnSpecialForListing.titleLabel.layer addAnimation:bottomAnimation forKey:@"transform.translation.y"]; 
} 
- (void)animationDidStop:(CAAnimation *)theAnimation2 finished:(BOOL)flag 
{ 
    if([[theAnimation2 valueForKey:@"id"] isEqual:@"animation1"]) { 
     CABasicAnimation *moveAnimation; 
     moveAnimation=[CABasicAnimation animationWithKeyPath:@"transform.translation.x"]; 
     moveAnimation.duration=3.5; 
     moveAnimation.repeatCount=0; 
     moveAnimation.autoreverses=NO; 
     moveAnimation.fromValue=[NSNumber numberWithFloat:0]; 
     moveAnimation.toValue=[NSNumber numberWithFloat:-400]; 
     moveAnimation.removedOnCompletion = NO; 
     moveAnimation.fillMode = kCAFillModeRemoved; 
     [btnSpecialForListing.titleLabel.layer addAnimation:moveAnimation forKey:@"transform.translation.x"]; 
    } 
} 

任何帮助将不胜感激。 谢谢！

Answer 1

你试过吗？

moveAnimation.fillMode = kCAFillModeForwards; 
moveAnimation.removedOnCompletion = NO; 

编辑 至于我可以看到你也可以使用animateWithDuration具有完成块。 示例如下：

CGRect rect = btnSpecialForListing.titleLabel.frame; 
[UIView animateWithDuration:2.0 animations:^{ 

rect.origin.y = -7; 
btnSpecialForListing.titleLabel.frame = rect; 

} completion:^(BOOL finished){ 

[UIView animateWithDuration:3.5 animation:^{ 
rect.origin.x = -400; 
btnSpecialForListing.titleLabel.frame = rect; 
}]; 

}];