Override Android Backbutton behavior only works on the first page with PhoneGap

I am using PhoneGap 1.5.0, jQuery 1.7.1 and jQuery mobile 1.0.1 and trying to override the backbutton in Android as stated here or here.

document.addEventListener("deviceready", onDeviceReady, false);
// PhoneGap loaded

function onDeviceReady() {
console.log("PhoneGap Ready!");
// waiting for button
document.addEventListener("backbutton", handleBackButton, false);
}

// handle the back button
function handleBackButton() {
console.log("Back Button Pressed!");
navigator.app.exitApp();
}

But it only works on the first page of my app. After changing to a different page the backbutton does nothing at all. The app consists of a tabview like this:

<body>
<div data-role="page" id="pilotTab">
    <div data-role="header">
        <h1>Pilot</h1>
    </div>
    <div data-role="content" id="pilotContent">
content be here ;)
    </div>
    <div data-role="footer" data-position="fixed">
        <div data-role="navbar">
            <ul>
                <li><a href="pilotTab.html" data-transition="none">Lotse</a>
                </li>
                <li><a href="bookingTab.html" data-transition="none">Verkehr</a>
                </li>
                <li><a href="mainListTab.html" data-transition="none">B&ouml;rt</a>
                </li>
            </ul>
        </div>
        <!-- /navbar -->
    </div>
    <!-- /footer -->
</div>

Is it a stupid mistake or is there something special I have to consider to make it work properly? Thanks in advance.

I gone through the new Phonegap source code and did following changes to make the backbutton work.

Html test code

<script type="text/javascript">
    $("#home").click(function(){
        $.mobile.changePage("home.html");
    });

    document.addEventListener("deviceready", onDeviceReady, false);
    document.addEventListener("backbutton", handleBackButton, false);

    function onDeviceReady() {
        console.log("PhoneGap Ready!");
    }

    function handleBackButton() {
        console.log("Back Button Pressed!");
        navigator.app.exitApp();
    }
</script>

Put the following code in the else block of document.addEventListener in cordova-1.5.0.js after line-no 507

if (e === 'backbutton') {
    var exec = require('cordova/exec')
    exec(null, null, "App", "overrideBackbutton", [true]);
}

Put following code in fireDocumentEvent method of cordova definition in cordova-1.5.0.js after line-no 592

if(type == "backbutton"){
    var e = document.createEvent('Events');
    e.initEvent(type);
    if (data) {
        for (var i in data) {
            e[i] = data[i];
        }
    }
    document.dispatchEvent(e);
    return;
}

I have put the whole cordova-1.5.0.js in this gist with updated code https://gist.github.com/2020325

Though it is working for me but it still may need some changes to work in all the possible scenarios.

Edit

Put following code in fireDocumentEvent method of cordova definition in cordova-1.5.0.js after line-no 592

if(type == "backbutton" || type == "menubutton" || type == "searchbutton"){
        var e = document.createEvent('Events');
        e.initEvent(type);
        if (data) {
            for (var i in data) {
                e[i] = data[i];
            }
        }
        document.dispatchEvent(e);
        return;
    }

Guillaume Gendre

Bryce Curtis is suggesting on that page to just change the line :

channel.onNativeReady.subscribe(_self.boot);

to :

channel.onNativeReady.subscribeOnce(_self.boot);

at the end of the file.

That seems to do the trick for me and fixed the backbutton AND the menubutton and searchbutton !

@dhaval : I have done the following changes in the cordova-1.5.0.js in Android.

The pages where I have not handled back button is working fine, But the place where I am handling the Back button does not work.

Its not even able to pick the function

function handleBackButton() {

  console.log("Back Button Pressed!");
    navigator.app.exitApp();
}

来源：https://stackoverflow.com/questions/9631933/override-android-backbutton-behavior-only-works-on-the-first-page-with-phonegap

标签

android

cordova

overriding

back-button