erpsuiteios/common/customUI/MyQLPreviewController.m

//
//  MyQLPreviewController.m
//  Apex Mobile
//
//  Created by Ray on 02/03/2018.
//  Copyright © 2018 United Software Applications, Inc. All rights reserved.
//

#import "MyQLPreviewController.h"

@interface MyQLPreviewController ()

@end

@implementation MyQLPreviewController

- (void)viewDidLoad {
    [super viewDidLoad];
//    self.toolbarItems = nil;
    
//    for(UIView* v in self.view.subviews)
//    {
//        if ([v isKindOfClass:[UIToolbar class] ]) {
//            v.hidden = YES;
//        }
//    }
    // Do any additional setup after loading the view.
}
-(void)viewWillLayoutSubviews
{
    [super viewWillLayoutSubviews];
    
//    self.navigationController.navigationBar.hidden = YES;
    
//    self.navigationController.toolbar.hidden = YES;
//    [self.navigationController.toolbar removeFromSuperview];
//    UIView* v1 = self.navigationController.toolbar.superview;
//    UIView* v2 = self.navigationController.toolbar;
    [self.navigationController setToolbarHidden:true];
    
//    self.navigationController.toolbar.backgroundColor = [UIColor clearColor];
    //把tool bar frame置为空，实现隐藏
    self.navigationController.toolbar.frame = CGRectMake(0, 0, 0, 0);
//    [self.navigationController.toolbar.superview removeFromSuperview];
//    // custom view demonstrate
//    UIView *topView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 100, 30)];
//    topView.backgroundColor = [UIColor redColor];
//
//    [self.view addSubview:topView];
}
- (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