iOSデバイスがオフラインのときにローカルHTMLファイルを読み込むにはどうすればよいですか？

Question

デバイスがオフラインのときに自分のUIWebViewをローカルのHTML5ファイルにして、デバイスがオンラインのときにWebサイトを開くようにします。

ファイルのコピーを残します。

AppDelegate.h

#import <UIKit/UIKit.h> 

@interface AppDelegate : UIResponder <UIApplicationDelegate> 

@property (strong, nonatomic) UIWindow *window; 


@end 

AppDelegate.m

#import "AppDelegate.h" 
#import <AVFoundation/AVFoundation.h> 
#import <AudioToolbox/AudioToolbox.h> 


@interface AppDelegate() 

@end 

@implementation AppDelegate 

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions 
{ 
    sleep(9.5); 

    NSError *setCategoryErr = nil; 
    NSError *activationErr = nil; 
    [[AVAudioSession sharedInstance] setCategory: AVAudioSessionCategoryPlayback error:&setCategoryErr]; 
    [[AVAudioSession sharedInstance] setActive:YES error:&activationErr]; 

    return YES; 
} 

- (void)applicationWillResignActive:(UIApplication *)application { 
    // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state. 
    // Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game. 
} 


- (void)applicationDidEnterBackground:(UIApplication *)application { 
    // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later. 
    // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits. 
} 


- (void)applicationWillEnterForeground:(UIApplication *)application { 
    // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background. 
} 


- (void)applicationDidBecomeActive:(UIApplication *)application { 
    // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface. 
} 


- (void)applicationWillTerminate:(UIApplication *)application { 
    // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:. 
} 

@end 

ViewController.h

#import <UIKit/UIKit.h> 

@interface ViewController : UIViewController 

@property (strong, nonatomic) IBOutlet UIWebView *webView; 

@end 

ViewController.m

#import "ViewController.h" 
#import <AVFoundation/AVFoundation.h> 


@interface ViewController() 

@end 


@implementation ViewController 

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 

    // Load the url into the webview 
    NSURL *url = [NSURL URLWithString:@"http://app.relaxemy.com"]; 
    [self.webView loadRequest:[NSURLRequest requestWithURL:url]]; 
} 





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

@end 

Answer 1

htmlファイルを作成してローカルに保存し、以下のようにロードする必要があります。

これはオフラインの方法に関するものですので、これを複製としてマークしません。しかし、答えはthis threadから取られる：

のObjective-C

NSString *htmlFile = [[NSBundle mainBundle] pathForResource:@"sample" ofType:@"html"]; 
NSString* htmlString = [NSString stringWithContentsOfFile:htmlFile encoding:NSUTF8StringEncoding error:nil]; 
[webView loadHTMLString:htmlString baseURL: [[NSBundle mainBundle] bundleURL]]; 

スウィフト私はこのコードを追加する必要があります

let htmlFile = NSBundle.mainBundle().pathForResource("fileName", ofType: "html") 
let html = try? String(contentsOfFile: htmlFile!, encoding: NSUTF8StringEncoding) 
webView.loadHTMLString(html!, baseURL:nil)