单行
CGSizesize =[self.storeName.text sizeWithAttributes:@{NSFontAttributeName:[UIFontsystemFontOfSize:14]}];
多行
titleLabel.numberOfLines = 0;//多行显示，计算高度
CGSize titleSize = [titleContent boundingRectWithSize:CGSizeMake(kScreen_Width, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:14]} context:nil].size;
textView
CGRectframe =self.textView.frame;
CGSizeconstraintSize =CGSizeMake(frame.size.width,MAXFLOAT);
CGSizesize = [self.textViewsizeThatFits:constraintSize];
