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我使用下面的代码跨屏幕移动UIImageView。有了这个代码,它在屏幕上弹出,但我希望它慢慢移动。我需要做什么?可可触摸 - 缓慢移动CGPointMake
[UIView beginAnimations:@"slide-up" context:NULL];
astroid_1.center = CGPointMake(astroidPosX,astroidPosY); // change this to somewhere else you want.
[UIView commitAnimations];
谢谢!