fishyumiao commented on issue #1493: ios ModalUI显示相关问题 URL: https://github.com/apache/incubator-weex/issues/1493#issuecomment-419618921 WXListComponent.m文件中还包含以下代码： ``` - (void)fixFlicker { static dispatch_once_t onceToken; dispatch_once(&onceToken, ^{ // FIXME:(ง •̀_•́)ง┻━┻ Stupid scoll view, always reset content offset to zero by calling _adjustContentOffsetIfNecessary after insert cells. // So if you pull down list while list is rendering, the list will be flickering. // Demo: // Have to hook _adjustContentOffsetIfNecessary here. // Any other more elegant way? NSString *a = @"ntOffsetIfNe"; NSString *b = @"adjustConte"; NSString *originSelector = [NSString stringWithFormat:@"_%@%@cessary", b, a]; [[self class] weex_swizzle:[WXTableView class] Method:NSSelectorFromString(originSelector) withMethod:@selector(fixedFlickerSelector)]; }); } ``` a,b,originSelector三行代码雷到我了！！！为什么要这样写？
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