UIScrollView scrolling speed [duplicate]

问题:

This question already has an answer here:

• Change UIScrollView scroll speed 2 answers

Is there any way to reduce the speed of scrolling in the UIScrollView, I tried to use scrollRectToVisible: animated: NO to accomplish this (by setting the animation to NO) but seems it's not the right way.

回答1:

You can use a simple uiview animation to do that..

[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:2];
[scrollview scrollRectToVisible:rect animated:NO];
[UIView commitAnimations];

that's the only way I am aware of.

ios 4 way (this will not work on iphones still running 3.x) :

[UIView animateWithDuration:2 animations:^(void){
    [scrollview scrollRectToVisible:rect animated:NO];
}];

回答2:

I know this is not exactly what you asked for but it may help you to set deceleration rate with UIScrollView property

@property(nonatomic) float decelerationRate