tederen_ios/smartRhino/Project/VCModel/ChatMessage/Chat/EMChatFileShowVC.m

//
//  EMChatFileShowVC.m
//  smartRhino
//
//  Created by niuzhen on 2019/12/31.
//  Copyright © 2019 tederen. All rights reserved.
//

#import "EMChatFileShowVC.h"

@interface EMChatFileShowVC ()<WKUIDelegate,WKNavigationDelegate>
@property (strong, nonatomic) WKWebView * webView;
@property (weak, nonatomic) IBOutlet UILabel *titleL;
@property (weak, nonatomic) IBOutlet UIView *NavBarV;

@end

@implementation EMChatFileShowVC
+(EMChatFileShowVC *)initEMChatFileShowVC{
    EMChatFileShowVC *controller = [StoryboardManager.shared.chatMsg instantiateViewControllerWithIdentifier:@"EMChatFileShowVC"];
    return controller;
}
- (WKWebView *)webView
{
    if (!_webView) {
        _webView = [[WKWebView alloc] init];
    }
    return _webView;
}
- (void)DownFile
{
    WS(weakSelf);
    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
    manager.requestSerializer.timeoutInterval = 60;
    manager.requestSerializer = [AFHTTPRequestSerializer serializer];
    manager.responseSerializer = [AFHTTPResponseSerializer serializer];
    
    [manager GET:self.fileUrl parameters:nil progress:nil success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
        [weakSelf writeToFile:responseObject fileName:weakSelf.titleStr];
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        NSLog(@"%@",error);
    }];
}
// 写入文件
-(void)writeToFile:(NSData *)data fileName:(NSString *)fileName{
    NSArray* paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString * _filePath = [paths objectAtIndex:0];
    
    NSString * filePath = [_filePath stringByAppendingPathComponent:fileName];
    // NSData写入文件
    [data writeToFile:filePath atomically:YES];
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL fileURLWithPath:filePath]];
    [self.webView loadRequest:request];
}

- (void)viewDidLoad {
    [super viewDidLoad];
    self.titleL.text = self.titleStr;
    [self.view addSubview:self.webView];
    [self.webView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.right.mas_equalTo(self.view);
        make.top.mas_equalTo(self.NavBarV.mas_bottom);
        if (@available(iOS 11.0, *)) {
            make.bottom.equalTo(self.view.mas_safeAreaLayoutGuideBottom);
        } else {
            make.bottom.equalTo(self.view.mas_bottom);
        }
    }];
    self.webView.UIDelegate = self;
    self.fd_prefersNavigationBarHidden = YES;
    
    self.webView.navigationDelegate = self;
    // 是否允许手势左滑返回上一级, 类似导航控制的左滑返回
    self.webView.allowsBackForwardNavigationGestures = YES;
    //可返回的页面列表, 存储已打开过的网页
//    WKBackForwardList * backForwardList = [_webView backForwardList];
    [self DownFile];
//    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:self.fileUrl]];
//
//    [self.webView loadRequest:request];
//    //页面后退
//    [self.webView goBack];
//    //页面前进
//    [self.webView goForward];
//    //刷新当前页面
//    [self.webView reload];
    
}
- (IBAction)backAction:(id)sender {
    [self.navigationController popViewControllerAnimated:YES];
}

@end