Cordova - window.history.back() not working on HTM

问题:

In my application I am using window.history.back to navigate back to previous View

Declaration of back button

 <div class="back_icon"  id="verification_back_icon"><a href="#" data-rel="back"  data-transition="slidedown"><img src="images/back_btn.png" width="23"/></a></div>

Button action:

 $("#verification_back_icon").on("click", function(e)
{
if(checkDirtyVacation())
{
    e.preventDefault();
    if(backbtnAlt== false)
    {
        backbtnAlt =true; 
         confirm("All data will be lost. Do you want to continue?",
        function(r){
            if(r){
                 //onBackKeyDown();
                    clearVacationvalues();
                    window.history.back();//this is not working in iOS 9
            }else{

            }
            backbtnAlt =false;
        });
    }   
}
else 
{
    e.preventDefault();
    if($(".vaction_location").hasClass("chkSelect"))
    {    
        $(".vaction_location").removeClass("chkSelect");
        $(".vaction_location").addClass("chkUnSelect");
    }


    window.history.back();
   }
  }); 

This worked perfectly till iOS 8.4. In iOS 9 this navigation is not working.

I am using Apache Cordova native platform version 3.8.0 .

If anyone facing the similar problem please suggest me. I have tried with history.back doesn't work on iOS using Cordova, but no luck

Thank you.

回答1:

The problem is that setting of window.location.hash is asynchronous in the iOS 9.0 UIWebview (used by Cordova/Phonegap) - see this bug report for details.

This causes issues when using jQuery Mobile which by default uses window.location.hash to navigate between "pages". It also causes issues with popups/dialogs/select menus which use this mechanism.

You can fix this by preventing jQuery Mobile from automatically listening/using location.hash:

$(document).on("deviceready", function(){
    $.mobile.hashListeningEnabled = false;
});

However, I found this had side effects on Android such as causing the hardware back button not to work, so I targeted it specifically at iOS 9 using cordova-plugin-device:

$(document).on("deviceready", function(){
    if(device.platform === "iOS" && parseInt(device.version) === 9){
        $.mobile.hashListeningEnabled = false;
    }
});

Note that I'm using navigator.app.backHistory() not window.history.back() in conjunction with hashListeningEnabled = false - this may make a difference.

Alternatively you can use this plugin to use the new WKWebView on iOS 8 and 9. WKWebView is used by Safari on iOS 8+, hence JQM sites viewed in the browser on iOS 9 don't encounter these issues. cordova-ios 3 still uses UIWebView due to a bug in WKWebView in iOS 8, but the upcoming cordova-ios 4 will support a WKWebView core plugin for iOS 9+. Note that there are additional considerations when using WKWebView with Cordova/Phonegap apps due to its stricter security, such as requiring CORS headers on XHR responses.

回答2:

SOLUTION:

This line resolved my issue :

 history.go(0); 

I have replaced window.history.back() with history.go(0);

Now it is working fine for me in iOS 9

In index.html

   <script type="text/javascript">$.mobile.hashListeningEnabled = false;</script>

Add this in onDeviceReady function:

    function onDeviceReady()
        {
 if(device.platform === "iOS" && parseInt(device.version) === 9){
               $.mobile.hashListeningEnabled = false;
           }

           if ( ! ( $.mobile.hashListeningEnabled &&
                   $.mobile.path.isHashValid( location.hash ) &&
                   ( $( hashPage ).is( ":jqmData(role='page')" ) ||
                    $.mobile.path.isPath( hash ) ||
                    hash === $.mobile.dialogHashKey ) ) ) {

                       // make sure to set initial popstate state if it exists
                       // so that navigation back to the initial page works properly
                       if ( $.event.special.navigate.isPushStateEnabled() ) {
                           $.mobile.navigate.navigator.squash( path.parseLocation().href );
                       }

                       $.mobile.changePage( $.mobile.firstPage, {
                                           transition: "none",
                                           reverse: true,
                                           changeHash: false,
                                           fromHashChange: true
                                           });
                   } else {
                       // trigger hashchange or navigate to squash and record the correct
                       // history entry for an initial hash path
                       if ( !$.event.special.navigate.isPushStateEnabled() ) {
                           $window.trigger( "hashchange", [true] );
                       } else {
                           // TODO figure out how to simplify this interaction with the initial history entry
                           // at the bottom js/navigate/navigate.js
                           $.mobile.navigate.history.stack = [];
                           $.mobile.navigate( $.mobile.path.isPath( location.hash ) ? location.hash : location.href );
                       }
                   }

Validation for device OS version (as history.go(0) is working only with iOS 9) Prior to iOS 9 version window.history.back() working perfectly

And now Add this piece of code in place of window.history.back()

      if(device.platform === "iOS" && parseInt(device.version) === 9){
              console.log("version" + device.version);
                console.log("iOS 9");
                 history.go(0); 
               //write your code here                 
           }
       else{
          window.history.back();
           }

To fix this Message "Failed to load webpage with error: CDVWebViewDelegate: Navigation started when state=1" in console add below code in CDVWebViewDelegate.m

In - (BOOL)webView:(UIWebView*)webView shouldStartLoadWithRequest:(NSURLRequest*)request navigationType:(UIWebViewNavigationType)navigationType

Method Comment this piece of code shown below:

    /*  if ([_delegate respondsToSelector:@selector(webView:didFailLoadWithError:)]) {
                        NSDictionary* errorDictionary = @{NSLocalizedDescriptionKey : description};
                        NSError* error = [[NSError alloc] initWithDomain:@"CDVWebViewDelegate" code:1 userInfo:errorDictionary];
                        [_delegate webView:webView didFailLoadWithError:error];
                    }*/

回答3:

Disabling push state worked for me:

$.mobile.pushStateEnabled = false;

回答4:

I think it is the A tag's default action causes the bug. So I just prevent the default action by adding return false at end of the click handler function

And it works.

• html

<a id="back-btn">back</a>

• javascript

  $('#back-btn').on('click', function(e) {
         window.history.go(-1);
         return false;
      })
  

回答5:

@Sujania,

According to the phonegap team, iOS9 is not officially support. This issue may be yet another bug in iOS9. You may have to wait for a fix.

PhoneGap Build iOS 9 Support Status
http://community.phonegap.com/nitobi/topics/phonegap-build-ios-9-support-status

Top line: iOS 9 is not officially supported until Cordova-iOS 4.0.0, which the Cordova team is hard at work on. However some issues can be solved with some simple configuration changes.

At this point in time, 4 bugs are reported to the Cordova Bug repository. Your issue does not appear in the respository - as of this date.

https://issues.apache.org/jira/browse/CB-9684?jql=text%20~%20%22iOS9%22

回答6:

Try this

if(r){
         try{
          var nav = window.navigator;
          if( this.phonegapNavigationEnabled && nav && nav.app && nav.app.backHistory )
          {
            nav.app.backHistory();
          }
          else 
          {
            window.history.back();
          }
        }
        catch(e)
        {
         alert(e);
        }
      }