Animation for iOS

Basic animation in iOS

iOS animations need to import #import <QuartzCore / QuartzCore.h> framework

Trigger the animation by clicking on the screen

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event

 UITouch * touch = touches.anyObject; // get the touch object

CGPoint location = [touch locationInView:]; // Get a touch point at which the view

// panning animation to the specified point

 CABasicAnimation *anim = [CABasicAnimation animationWithKeyPath:@"position"];

 [Anim setToValue: [NSValue valueWithCGPoint: point]]; // do not set because the default is the current value fromValue

When // 2) animation length
  [anim setDuration: 1.0f];

    [Anim setDelegate: self]; // listen for start and end of the animation

 [Anim setRemovedOnCompletion: NO]; // Set view of the holding state animation

   // forwards is gradually approaching the target point
    [anim setFillMode: kCAFillModeForwards];

// Set the location to be modified

 [anim setValue:[NSValue valueWithCGPoint:point] forKey:@"targetPoint"];
    [anim setValue:@"translationTo" forKey:@"animationType"];

 

   After // add animation to the layer, the system will be in accordance with the defined properties begin the animation, programmers usually do not interact with the animated
    [self.myView.layer addAnimation: anim forKey: nil ];

   The most appropriate action // end of the animation

- (void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag

{

 * Type = NSString [Anim valueForKey: @ "animationType is"];
    
    IF ([type as isEqualToString: @ "translationTo"]) {
        // 1. Remove the target point to be moved through key
        CGPoint point = [[anim valueForKey: @ "TargetPoint"] CGPointValue];
        NSLog (@ "target point:% @", NSStringFromCGPoint (point ));
        
        coordinate point myView // 2. set the
        [self.myView the setCenter: point];
    }

}