iOS Animation - Method to flip and shake UIView at regular intervals

[NSTimer scheduledTimerWithTimeInterval: repeats:YES block:^(NSTimer * _Nonnull timer) {
      CABasicAnimation* rotationAnimation = [CABasicAnimation animation];;
      rotationAnimation = [CABasicAnimation animationWithKeyPath:@""];
       = [NSNumber numberWithFloat: M_PI * 2.0 ];
       = 1;
      // Switch the interface to ensure that the animation does not stop       = NO;
       = 1;
      [ addAnimation:rotationAnimation forKey:@"rotationAnimation"];
    }];

CABasicAnimation *waitAnimation = [CABasicAnimation animation];
     = [NSNumber numberWithFloat:1.0];
     = ;
     = ;

    CABasicAnimation* rotationAnimation = [CABasicAnimation animationWithKeyPath:@""];
     = [NSNumber numberWithFloat: M_PI * 2.0 ];
     = ;

    CAAnimationGroup *group = [CAAnimationGroup animation];
     = ;
     = CGFLOAT_MAX;
     = NO;

    [group setAnimations:@[waitAnimation, rotationAnimation]];

    [ addAnimation:group forKey:@"bindCardImageViewAnimation"];

CABasicAnimation* shake = [CABasicAnimation animationWithKeyPath:@""];
  //Set the jitter amplitude   = [NSNumber numberWithFloat:-0.2];
   = [NSNumber numberWithFloat:+0.2];
   = 0.1;
   = YES; //Does it be repeated   = 3;

  [ addAnimation:shake forKey:@"imageView"];