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原创 线程处理
dispatch_group_t group = dispatch_group_create(); dispatch_group_async(group, dispatch_get_global_queue(0, 0), ^{ //并行执行的线程1 }); dispatch_group_async(group, dispatch_get_globa
2016-10-14 14:55:57 129
原创 placeholder的内容放到中间
//将placeholder的内容放到中间 NSMutableParagraphStyle * placeholderStyle = [[NSMutableParagraphStyle alloc]init]; placeholderStyle.alignment = NSTextAlignmentCenter; NSAttributedString * attS
2016-06-18 08:23:59 815
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