【代码笔记】iOS-标题2个图标，点击的时候，页面跳转

一，效果图。

二，工程图。

三，代码

RootViewController.h

#import <UIKit/UIKit.h>

@interface RootViewController : UIViewController
{
    UIButton * leftButton;
    UIButton * rightButton;
    UIViewController * firstController;
    UIViewController * secondController;

}
@end

RootViewController.m

#import "RootViewController.h"

@interface RootViewController ()

@end

@implementation RootViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view.

    //初始化顶部按钮
    [self creatHeadView];

    //初始化背景图
    [self initBackView];

}
#pragma -mark -functions
//初始化背景图
-(void)initBackView
{
    firstController = [[UIViewController alloc] init];
    firstController.view.backgroundColor = [UIColor redColor];
    [self.view addSubview:firstController.view];

    secondController = [[UIViewController alloc] init];
    secondController.view.backgroundColor = [UIColor blueColor];

}
//初始化顶部按钮
-(void)creatHeadView
{
    UIView * headView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 100, 30)];

    //左边的按钮
    leftButton = [UIButton buttonWithType:UIButtonTypeCustom];
    leftButton.frame = CGRectMake(0, 0, 50, 30);
    leftButton.tag = 201;
    leftButton.enabled = NO;
    [leftButton setImage:[UIImage imageNamed:@"left"] forState:UIControlStateNormal];
    [leftButton addTarget:self action:@selector(doClickHeadActions:) forControlEvents:UIControlEventTouchUpInside];
    [headView addSubview:leftButton];

    //右边的按钮
    rightButton = [UIButton buttonWithType:UIButtonTypeCustom];
    rightButton.frame = CGRectMake(50, 0, 50, 30);
    rightButton.tag = 301;
    [rightButton setImage:[UIImage imageNamed:@"right"] forState:UIControlStateNormal];
    [rightButton addTarget:self action:@selector(doClickHeadActions:) forControlEvents:UIControlEventTouchUpInside];
    [headView addSubview:rightButton];

    self.navigationItem.titleView = headView;

}
#pragma -mark -doClickActions
-(void)doClickHeadActions:(UIButton *)btn
{
    if (btn.tag == 201)
    {
        [secondController dismissViewControllerAnimated:NO completion:nil];
        [self.view addSubview:firstController.view];

        [btn setImage:[UIImage imageNamed:@"leftselect"] forState:UIControlStateNormal];
         btn.enabled = NO;
        [rightButton setImage:[UIImage imageNamed:@"right"] forState:UIControlStateNormal];
        rightButton.enabled = YES;
    }
    else if (btn.tag == 301)
    {
        [firstController dismissViewControllerAnimated:NO completion:nil];
        [self.view addSubview:secondController.view];

        [btn setImage:[UIImage imageNamed:@"rightselect"] forState:UIControlStateNormal];
        btn.enabled = NO;
        [leftButton setImage:[UIImage imageNamed:@"left"] forState:UIControlStateNormal];
        leftButton.enabled = YES;
    }

}
- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}