说明: // 气泡view UIView *view = [[UIView alloc] init]; view.tag = 2; UIFont *font = [UIFont systemFontOfSize:14]; //让一段字符串 根据换行模式和字体强制的去适应一个大小 CGSize size = [message sizeWithFont:font constrainedToSize:CGSizeMake(180, 1000000) lineBreakMode:NSLineBreakByCh
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