如何使用计时器自动滚动UIScrollView [英] How to auto scroll UIScrollView using timer

问题描述

我有滚动视图来显示图像。我需要计时器每5秒一个接一个地显示图像。如何使用计时器启动UIScrollView事件以在5秒后移动？

I have scrollview to show images. I need timer to show images one after another for every 5 seconds. How to initiate UIScrollView event to move next after 5 sec using timer?

推荐答案

将变量int h添加到您的界面和yourScrollView作为财产。然后：

Add the variable int h to your interface, and yourScrollView as a property. Then:

[NSTimer scheduledTimerWithTimeInterval:5.0 target:self selector:@selector(onTimer) userInfo:nil repeats:YES];

- (void) onTimer {

    // Updates the variable h, adding 100 (put your own value here!)
    h += 100; 

    //This makes the scrollView scroll to the desired position  
    yourScrollView.contentOffset = CGPointMake(0, h);  

}

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