thmodel_ios_model/model/Classes/Public/ModelBaseViewController.m

//
//  ModelBaseViewController.m
//  model
//
//  Created by JuYi on 2018/7/16.
//  Copyright © 2018年 Mine. All rights reserved.
//

#import "ModelBaseViewController.h"

@interface ModelBaseViewController ()

@end

@implementation ModelBaseViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    [self.navigationController.navigationBar setBackgroundImage:[UIImage imageNamed:@"baise1"] forBarMetrics:(UIBarMetricsDefault)];
    UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
    btn.frame = CGRectMake(0, 0, 40, 40);
    [btn setImage:[UIImage imageNamed:@"fanhui2"] forState:UIControlStateNormal];
    btn.imageEdgeInsets =  UIEdgeInsetsMake(0, -20, 0, 0); // backBtn2
    [btn addTarget:self action:@selector(backClick) forControlEvents:UIControlEventTouchUpInside];
    UIBarButtonItem *leftItem = [[UIBarButtonItem alloc] initWithCustomView:btn];
    UIBarButtonItem *nagetiveSpacer = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil];
    //    nagetiveSpacer.width = -12;//这个值可以根据自己需要自己调整
    self.navigationItem.leftBarButtonItems = @[nagetiveSpacer, leftItem];
}

- (void)backClick {
    [self.navigationController popViewControllerAnimated:YES];
}

- (UIStatusBarStyle)preferredStatusBarStyle{
    return UIStatusBarStyleLightContent;
}

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

/*
#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    // Get the new view controller using [segue destinationViewController].
    // Pass the selected object to the new view controller.
}
*/

@end