自定义导航栏封装

做项目，有很多地方都需要自定义导航栏，为了方便管理以及，代码质量，便简单地封装了一个，此导航栏能满足大部分需求，其中，在设置导航栏中间的图片时，需要自己适配一下。为了以后，项目，存档在此。如果，有什么地方，有什么建议，请提出。谢谢！

图例：

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代码示例：

  GGCustomNavgationBar.h

    #import <UIKit/UIKit.h>
    #define K_WIDTH    [UIScreen mainScreen].bounds.size.width
    #define k_HEIGHT   [UIScreen mainScreen].bounds.size.height;
    typedef NS_ENUM(NSInteger,GGnavMiddleStyle)
  {
      GGnavMiddleWithLab = 0,  // middle_lab
      GGnavMiddleWithimg,      // middle_img
  };
  @protocol GGCustomNavgationBarDelegate <NSObject>
  @optional;
  - (void)touchTheLeftBtn:(UIButton *)btn;
  - (void)touchTheRightBtn:(UIButton *)btn;
  @end
  @interface GGCustomNavgationBar : UIView
  /** delegate*/
  @property (nonatomic,weak) id <GGCustomNavgationBarDelegate>delegate;
  /** style*/
  @property (nonatomic,assign) GGnavMiddleStyle navMiddleStyle;
  /** bgcolor*/
  @property (nonatomic,strong) UIColor *bgColor;
  /** left_nor_img*/
  @property (nonatomic,strong) UIImage *leftBtnNorImg;
  /** left_select_img*/
  @property (nonatomic,strong) UIImage *leftBtnselectImg;
  /** left_hightly_img*/
  @property (nonatomic,strong) UIImage *leftBtnHightlyImg;
  /** right_nor_img*/
  @property (nonatomic,strong) UIImage *rightBtnNorImg;
  /** right_hightly_img*/
  @property (nonatomic,strong) UIImage *rightBtnHightlyImg;
  /** middle_img*/
  @property (nonatomic,strong) UIImage *middleImage;
  /** middle_text_Str*/
  @property (nonatomic,copy) NSString *middleTextStr;
  /** middle_img_rect*/
  @property (nonatomic,assign) CGRect middleImgRect;
  @end

  #import "GGCustomNavgationBar.h"
  @interface GGCustomNavgationBar (
  @end

  @implementation GGCustomNavgationBar
  {
      UIButton *_leftBtn;
      UIButton *_rightBtn;
      UIImageView *_middleImg;
      UILabel *_middleText;
      UIView *_cotainView;
  }
  #pragma mark - 初始化
  - (instancetype)initWithFrame:(CGRect)frame
  {
     if (self = [super initWithFrame:frame]) {

          self.backgroundColor = _bgColor;
      }
       return self;
  }

  #pragma mark - UI布局
  - (void)setupSubViews
  {
      _leftBtn = [[UIButton alloc]initWithFrame:(CGRect){0,20,44,44}];
      [_leftBtn addTarget:self action:@selector(clickleftWithbtn:) forControlEvents:UIControlEventTouchUpInside];
      [self addSubview:_leftBtn];

      _rightBtn = [[UIButton alloc]init];
      [_rightBtn addTarget:self action:@selector(clickRightWithbtn:) forControlEvents:UIControlEventTouchUpInside];
     [self addSubview:_rightBtn];
      _rightBtn.frame = CGRectMake(K_WIDTH-44, 20, 44, 44);

if (_navMiddleStyle == GGnavMiddleWithimg) {

    _middleImg = [[UIImageView alloc]init];
    CGPoint center = _middleImg.center;
    center.x = K_WIDTH / 2;
    center.y = 44;
    _middleImg.center = center;
    [self addSubview:_middleImg];
         }

if(_navMiddleStyle == GGnavMiddleWithLab){
    _middleText = [[UILabel alloc]initWithFrame:(CGRect){0,20,K_WIDTH/2,20}];
    CGPoint center = _middleText.center;
    center.x = K_WIDTH / 2;
    center.y = 44;
    _middleText.center = center;
    [_middleText setTextColor:[UIColor whiteColor]];
    _middleText.textAlignment = NSTextAlignmentCenter;
    _middleText.font = [UIFont boldSystemFontOfSize:20];
    [self addSubview:_middleText];
}

  }

  #pragma 点击逻辑处理
  - (void)clickRightWithbtn:(UIButton *)sender;
  {
      if (self.delegate && [self.delegate respondsToSelector:@selector(touchTheRightBtn:)])
    {
    [self.delegate touchTheRightBtn:sender];
}
  }
  - (void)clickleftWithbtn:(UIButton *)sender;
  {
      if(self.delegate && [self.delegate respondsToSelector:@selector(touchTheLeftBtn:)])
      {
       [self.delegate touchTheLeftBtn:sender];
      }

  }
  #pragma mark - set/get
  // set_nar_style
  - (void)setNavMiddleStyle:(GGnavMiddleStyle)navMiddleStyle
  {
      _navMiddleStyle = navMiddleStyle;
      [self setupSubViews];
  }
  // bgColor
  - (void)setBgColor:(UIColor *)bgColor
  {
      _bgColor = bgColor;
      self.backgroundColor = bgColor;

  }
  // left_img_nor
  -(void)setLeftBtnNorImg:(UIImage *)leftBtnNorImg
  {
    _leftBtnNorImg = leftBtnNorImg;
    [_leftBtn setImage:leftBtnNorImg forState:UIControlStateNormal];
  }

  // leftBtnselectImg
  - (void)setLeftBtnselectImg:(UIImage *)leftBtnselectImg
  {
      _leftBtnselectImg = leftBtnselectImg;
      [_leftBtn setImage:leftBtnselectImg forState:UIControlStateSelected];
  }
  // left_hightly_img
  - (void)setLeftBtnHightlyImg:(UIImage *)leftBtnHightlyImg
  {
      _leftBtnHightlyImg = leftBtnHightlyImg;
       [_leftBtn setImage:leftBtnHightlyImg forState:UIControlStateHighlighted];
  }
  // right_img_nor
  - (void)setRightBtnNorImg:(UIImage *)rightBtnNorImg
  {
      _rightBtnNorImg = rightBtnNorImg;
      [_rightBtn setImage:rightBtnNorImg forState:UIControlStateNormal];

  }
  // right_hightly_nor
  - (void)setRightBtnHightlyImg:(UIImage *)rightBtnHightlyImg
  {
      _rightBtnHightlyImg = rightBtnHightlyImg;
      [_rightBtn setImage:rightBtnHightlyImg forState:UIControlStateHighlighted];
  }
  // middle_image
  -(void)setMiddleImage:(UIImage *)middleImage
  {
      _middleImage = middleImage;
      _middleImg.image = middleImage;
  }
  // middleTextStr
  -(void)setMiddleTextStr:(NSString *)middleTextStr
  {
      _middleTextStr = middleTextStr;
      _middleText.text = middleTextStr;
  }
  //middleImgRect  
  - (void)setMiddleImgRect:(CGRect)middleImgRect
  {
      _middleImgRect = middleImgRect;
      _middleImg.bounds = middleImgRect;
  }

  @end

基本用法：

  #import "GGCustomNavgationBar.h"
  #import "GGSecondeController.h"

  #define K_WIDTH    [UIScreen mainScreen].bounds.size.width
  #define k_HEIGHT   [UIScreen mainScreen].bounds.size.height;
  #define RGBA_GGCOLOR(r,g,b,p) [UIColor colorWithRed:(r) / 255.0f green:(g) / 255.0f blue:(b) / 255.0f alpha:(p)]
  @interface GGSecondeController () <GGCustomNavgationBarDelegate>

  @end

  @implementation GGSecondeController

  - (void)viewDidLoad {
      [super viewDidLoad];

     GGCustomNavgationBar *navBar = [[GGCustomNavgationBar alloc]initWithFrame:(CGRect){0,0,K_WIDTH,64}];
      navBar.navMiddleStyle = GGnavMiddleWithimg;
      navBar.bgColor =  RGBA_GGCOLOR(0, 153, 203, 1);
      navBar.leftBtnNorImg = [UIImage imageNamed:@"BackIcon"];
      navBar.rightBtnNorImg = [UIImage imageNamed:@"user"];
      navBar.middleImage =[UIImage imageNamed:@"MainTitle"];
      navBar.middleTextStr = @"订单详情";
      CGFloat scale = 0.7;
      navBar.middleImgRect = (CGRect){0,0,(K_WIDTH/2)*scale,30*scale};
      [self.view addSubview:navBar];
      navBar.delegate = self;

  }
  #pragma mark - 代理方法
  - (void)touchTheLeftBtn:(UIButton *)btn
  {
      NSLog(@"我是左边");
  }
  - (void)touchTheRightBtn:(UIButton *)btn
  {
      NSLog(@"我是右边");
  }

   @end

原作者链接：http://www.jianshu.com/p/b9981cb4193c