It's convenient to write your own animation functions.

 

-(Void) UIViewAnimation :( UIView *) view

Frame :( CGRect) frame

Type :( int) type

Alpha :( float) alpha

Duration :( float) duration

{

[UIView beginAnimations: nil context: nil];

[UIView setAnimationDuration: duration];

[UIView setAnimationCurve: type];

[UIView setAnimationDelegate: self];

View. alpha = alpha;

View. frame = frame;

[UIView commitAnimations];

}

 

Call Method

[Self UIViewAnimation: downView frame: CGRectMake (0, height, 320, 58) type: UIViewAnimationCurveEaseOut alpha: 1 duration: 0.3];

 

DownView is the animation view.

CGRectMake (0, height, 320, 58) Location Conversion

UIViewAnimationCurveEaseOut animation effect

 

There are also:

UIViewAnimationCurveEaseInOut, // slow at beginning and end

UIViewAnimationCurveEaseIn, // slow at beginning

UIViewAnimationCurveEaseOut, // slow at end

UIViewAnimationCurveLinear

 

1. Transparency change

0.3 animation time