动画完成后，iOS停止UIbutton取代自己的位置

Question

I have set the animation like seen in below image. In which UIbutton move from left to right and then top to bottom. Animation work correctly but after completion of animation UIButton comes to its original place before the segue perform. so, it's not look good. I want to set that after the completion of animation UIButton can't come to it's own place before segue .

Here is my try with Image.

   //Move button Left to Right
- (IBAction)btnEasy:(id)sender {
Easy=YES;
NSLog(@"your x is: %f ", self.btnEasy.frame.origin.x);
NSLog(@"your y is: %f ", self.btnEasy.frame.origin.y);

x1=self.btnEasy.frame.origin.x;
y1=self.btnEasy.frame.origin.y;

CGRect screenRect = [[UIScreen mainScreen] bounds];
[UIView animateWithDuration:1.150 delay:0 options:UIViewAnimationOptionCurveEaseInOut animations:^{
            self.btnEasy.frame = CGRectMake(screenRect.size.width/1.80, self.btnEasy.frame.origin.y, self.btnEasy.frame.size.width, self.btnEasy.frame.size.height);

    [self performSelector:@selector(btneasyanimation) withObject:self afterDelay:1.160 ];}
                      completion:^(BOOL finished) {

                      }];

  //Move Button top to Bottom

    if (Easy==YES) {
        if (isiPad2 || isiPadAir || isiPadRatina) {
          //[self.view layoutIfNeeded];
                [UIView beginAnimations:nil context:NULL];
                [UIView setAnimationBeginsFromCurrentState:YES];
                [UIView setAnimationDuration:1.0];
                [_btnEasy setFrame:CGRectMake(self.view.frame.origin.x+290, self.view.frame.origin.y+900, self.btnEasy.frame.size.width, self.btnEasy.frame.size.height)];
                [UIView commitAnimations];


        }
     else   if (isiPhone4s) {

            [UIView beginAnimations:nil context:NULL];
            [UIView setAnimationBeginsFromCurrentState:YES];
            [UIView setAnimationDuration:1.0];
            [_btnEasy setFrame:CGRectMake(self.view.frame.origin.x+92, self.view.frame.origin.y+428, self.btnEasy.frame.size.width, self.btnEasy.frame.size.height)];
            [UIView commitAnimations];


        }
    }
  [self performSelector:@selector(segueeMethod) withObject:self afterDelay:1.160 ];

Image :-

Answer 1

If you are not placing directly the button given it the frame, thus using autolayout (autoresize will end with the same effect). You need to explicitly use autolayout, retain a reference to your constraints and update them (you can search here how to do that) and then set the UIView animation block [button layoutIfNeeded]

You can see a detailed answer about it in this answer

Answer 2

There is an easy and quick way that will work with your current implementation. Provided you know exactly where you want the view to be once the animation is done, you can do the following:

in UIView animateWithDuration: ... assign the final transform (position & orientation) of the view in the completion block, ie:

completion:^(BOOL finished) {
// Assign views transform and appearance here, for when the animation completes
}

Hope that helps.