Xcode, iphone - Make image animation move in specific direction [closed]

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I'm creating an animated ball which should move across the screen. I want to make it move towards the center of the screen as if it is attracted by the center. How can I do this?

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You can try this code

[UIView beginAnimations:nil context:NULL]; //starting Animation

[UIView setAnimationDuration:1.0];
[UIView setAnimationRepeatCount:10];
[UIView setAnimationRrepeatAutoreverses:YES];

CGPoint position = 200.0f;
position.y = 200.0f;
position.x = 150.0f;
img.center = position;

[UIView commitAnimations];

If it is cocos2d,You can use Move method,

id move = [CCMoveTo actionWithDuration:3 position:ccp(160,240);
[sprite runAction:move];

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 image.center = CGPointMake(image.center.x + 10, image.center.y);