使用非常快速的滑动时出现问题 [英] problem when swipe using very fast

问题描述

我正在开发一个pdf阅读器，我必须在手指滑动上加载pdf书的每一页。对于每次滑动，我正在递增一个页面，如果我正在慢慢地滑动它工作正常。如果滑动如此之快它就会崩溃，它根本不起作用。

I am developing an pdf reader in which i have to load each page of the pdf book on finger swipe. For each swipe i am incrementing one page it is working fine if i am swiping slowly.where it is not at all working if the swipe is so fast it gets crashed.

大家好我用NSobject类引用解决了上面的问题它只有两行...

hi folks i resolved the above issue with the NSobject class reference it has only two lines..

[NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(loadPagesAccordingToCurrentOrientation) object:nil];
[self performSelector:@selector(loadPagesAccordingToCurrentOrientation) withObject:nil afterDelay:0.5];

推荐答案

一些代码用于我的问题

[NSObject cancelPreviousPerformRequestsWithTarget：self selector：@selector（loadPagesAccordingToCurrentOrientation）object：nil];

[NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(loadPagesAccordingToCurrentOrientation) object:nil];

[self performSelector：@选择器（loadPagesAccordingToCurrentOrientation）withObject：nil afterDelay：0.5];

[self performSelector:@selector(loadPagesAccordingToCurrentOrientation) withObject:nil afterDelay:0.5];

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