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我使用可可 webview 很长时间一个一个地加载许多网页。但是,有时,控制台打印如下:

2013-06-04 20:12:32.829 iBookMark[5895:707] ---sender = (null)
2013-06-04 20:12:33.093 iBookMark[5895:707] thumbnail img save over
ImageIO: <ERROR>  CGImageSourceCreateWithData data parameter is nil
ImageIO: <ERROR>  CGImageSourceCreateWithData data parameter is nil
ImageIO: <ERROR>  CGImageSourceCreateWithData data parameter is nil
ImageIO: <ERROR>  CGImageSourceCreateWithData data parameter is nil
ImageIO: <ERROR>  CGImageSourceCreateWithData data parameter is nil
ImageIO: <ERROR>  CGImageSourceCreateWithData data parameter is nil
ImageIO: <ERROR>  CGImageSourceCreateWithData data parameter is nil
ImageIO: <ERROR>  CGImageSourceCreateWithData data parameter is nil
ImageIO: <ERROR>  CGImageSourceCreateWithData data parameter is nil
ImageIO: <ERROR>  CGImageSourceCreateWithData data parameter is nil
2013-06-04 20:12:48.987 iBookMark[5895:707] [IMKInputSession activate] exception caught.
    IMKInputSession: <IMKInputSession: 0x102124cc0> -- 
    NSPortTimeoutException : connection timeout: did not receive reply
2013-06-04 20:12:53.989 iBookMark[5895:707] [IMKInputSession setValue:forTag:] exception caught.
    NSPortTimeoutException : connection timeout: did not receive reply

我在谷歌上搜索。但一无所获。我猜这个异常是由可可 webview 引起的,对吗?发生这种情况时,我的系统变得非常缓慢,内存几乎为零。我该如何解决这个问题,请帮助我,谢谢。

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