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1、UITableView：UITableViewDelegate 新增内容：// Use the estimatedHeigh(估算高度)t methods to quickly calcuate guessed values which will allow for fast load times of the table.// If these methods are implemented
1、获取系统语言设置 NSUserDefaults *userDefault = [NSUserDefaults standardUserDefaults]; NSArray *languages = [userDefault objectForKey:@"AppleLanguages"]; NSString *preferredLang = [languages objectAtIn
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