摘要:
- (void)drawRect:(CGRect)rect{ // draw a rounded rect bezier path filled with blue CGContextRef aRef = UIGraphicsGetCurrentContext(); CGConte... 阅读全文
摘要:
NSOperationQueue *operationQueue; // for rendering pages on second thread[operationQueue waitUntilAllOperationsAreFinished];一句很简单的代码,可以实现UI的异步操作,知道操... 阅读全文