#import "BasePopViewController.h"

@interface BasePopViewController ()

@end

@implementation BasePopViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    [self setNavigationItemBackButton];
    self.navigationController.interactivePopGestureRecognizer.delegate = (id)self;
}

- (void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];
    if (self.navigationController.viewControllers.count > 1) {
        self.navigationController.interactivePopGestureRecognizer.enabled = YES;
    }else{
        self.navigationController.interactivePopGestureRecognizer.enabled = NO;
    }
}

/**
 自定义状态栏
 */
- (void)setNavigationItemBackButton{
    if (self.navigationController.viewControllers.count > 1) {
        UIBarButtonItem *back = [[UIBarButtonItem alloc]initWithImage:[UIImage imageNamed:@"back_off"] style:UIBarButtonItemStylePlain target:self action:@selector(popBackButtonAction)];
        self.navigationItem.leftBarButtonItems = @[back];
    }
}

/**
 返回按钮事件
 */
- (void)popBackButtonAction {
    [self.navigationController popViewControllerAnimated:YES];
}
#pragma mark - 下面是设置的状态栏颜色，可忽略
-(UIStatusBarStyle)preferredStatusBarStyle{
    ///这里设置白色
    return UIStatusBarStyleLightContent;
}
-(BOOL)prefersStatusBarHidden{
    return NO;
}
@end