创建UILabel

UILabelCreate.h
#import <UIKit/UIKit.h>

@interface UILabelCreate : UILabel

/**
 *  创建UILabel 初始化不包含text
 *
 *  @param frame          frame
 *  @param font           font
 *  @param textColor      textColor
 *  @param backgroudColor backgroudColor
 *  @param textAlignment  textAlignment
 */
- (void)createNormalLabel:(CGRect)frame font:(UIFont *)font textColor:(UIColor *)textColor backgroudColor:(UIColor *)backgroudColor  textAlignment:(NSTextAlignment)textAlignment;

/**
 *  创建UILabel 初始化包含text
 *
 *  @param frame          frame
 *  @param text           text
 *  @param font           font
 *  @param textColor      textColor
 *  @param backgroudColor backgroudColor
 *  @param textAlignment  textAlignment
 */
- (void)createDefaultLabel:(CGRect)frame text:(NSString *)text font:(UIFont *)font textColor:(UIColor *)textColor backgroudColor:(UIColor *)backgroudColor  textAlignment:(NSTextAlignment)textAlignment;

/**
 *  创建UILabel 初始化包含text(自增高)
 *
 *  @param frame          frame
 *  @param text           text
 *  @param font           font
 *  @param textColor      textColor
 *  @param backgroudColor backgroudColor
 *  @param textAlignment  textAlignment
 */
- (void)createLabelAdjustsFontSizeOfHigh:(CGRect)frame text:(NSString *)text font:(UIFont *)font textColor:(UIColor *)textColor backgroudColor:(UIColor *)backgroudColor  textAlignment:(NSTextAlignment)textAlignment;

≈
 *  设置Text并返回Label的高
 *
 *  @param text           text
 *  @param lableSizeWidth Label's Width
 *
 *  @return Label's higt
 */
- (CGFloat)setTextWithLabelSizeHigh:(NSString *)text lableSizeWidth:(CGFloat)lableSizeWidth;

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UILabelCreate.m
#define IOS7_BEFORE ([[[UIDevice currentDevice] systemVersion] floatValue] <7.0 ? YES : NO)

#import "UILabelCreate.h"

@implementation UILabelCreate

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        // Initialization code
    }
    return self;
}

/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect
{
    // Drawing code
}
*/

- (void)createNormalLabel:(CGRect)frame font:(UIFont *)font textColor:(UIColor *)textColor backgroudColor:(UIColor *)backgroudColor textAlignment:(NSTextAlignment)textAlignment
{
    [self setFrame:frame];
    [self setFont:font];
    [self setTextColor:textColor];
    if (backgroudColor == nil) {
        [self setBackgroundColor:[UIColor clearColor]];
    }
    else{
        [self setBackgroundColor:backgroudColor];
    }
    [self setTextAlignment:textAlignment];
    self.numberOfLines = 0;
}

- (void)createDefaultLabel:(CGRect)frame text:(NSString *)text font:(UIFont *)font textColor:(UIColor *)textColor backgroudColor:(UIColor *)backgroudColor textAlignment:(NSTextAlignment)textAlignment
{
    [self setFrame:frame];
    [self setText:text];
    [self setFont:font];
    [self setTextColor:textColor];
    if (backgroudColor == nil) {
        [self setBackgroundColor:[UIColor clearColor]];
    }
    else{
        [self setBackgroundColor:backgroudColor];
    }
    [self setTextAlignment:textAlignment];
    self.numberOfLines = 0;
}

- (void)createLabelAdjustsFontSizeOfHigh:(CGRect)frame text:(NSString *)text font:(UIFont *)font textColor:(UIColor *)textColor backgroudColor:(UIColor *)backgroudColor textAlignment:(NSTextAlignment)textAlignment
{
    [self setText:text];
    [self setFont:font];
    [self setTextColor:textColor];
    if (backgroudColor == nil) {
        [self setBackgroundColor:[UIColor clearColor]];
    }
    else{
        [self setBackgroundColor:backgroudColor];
    }
    [self setTextAlignment:textAlignment];
    self.numberOfLines = 0;
    
    CGSize maxNameLabelSize = CGSizeMake(frame.size.width,2000);
    CGSize labelSize;
    if (IOS7_BEFORE) {
        labelSize = [text sizeWithFont:font
                     constrainedToSize:maxNameLabelSize
                         lineBreakMode:NSLineBreakByWordWrapping];
    }
    else{
        
        labelSize = [text boundingRectWithSize:maxNameLabelSize
                                       options:NSStringDrawingUsesLineFragmentOrigin
                                    attributes:@{NSFontAttributeName:font}
                                       context:nil].size;
        
    }

    [self setFrame:CGRectMake(frame.origin.x, frame.origin.y, labelSize.width, labelSize.height)];
}

- (CGFloat)setTextWithLabelSizeHigh:(NSString *)text lableSizeWidth:(CGFloat)lableSizeWidth
{
    [self setText:text];
    
    CGSize maxNameLabelSize = CGSizeMake(lableSizeWidth,2000);
    
    CGSize labelSize;
    if (IOS7_BEFORE) {
        labelSize = [text sizeWithFont:self.font
                     constrainedToSize:maxNameLabelSize
                         lineBreakMode:NSLineBreakByWordWrapping];
    }
    else{
        
        NSDictionary *attributes = [NSDictionary dictionaryWithObjectsAndKeys:
                                    self.font,NSFontAttributeName, nil];
        
        labelSize = [text boundingRectWithSize:maxNameLabelSize
                                       options:NSStringDrawingUsesLineFragmentOrigin
                                    attributes:attributes
                                       context:nil].size;
        
    }
    return labelSize.height;
}