how do I disable the phone's back button in Android using Jquerymobile, PhoneGap

问题

Could someone please tell me how to disable Android's back button (That is the back-button found on all Android phones).

I am using Jquery mobile with PhoneGap. I find this online in the Cordova documentation, but this does not work for me. Back button event is not even registering.

function onLoad() {
    console.log("**** INSIDE ONLOAD FUNCTION *****");
    document.addEventListener("backbutton", onBackKeyDown, false);   
}

// Handle the back button
function onBackKeyDown() {

    // Pressing the back button does not print this message.
    console.log("**************** INSIDE BACK BUTTON *************");
}

回答1:

I used backKeyDown and it works for me :

function onDeviceReady() {
        document.addEventListener("backbutton", backKeyDown, true);
        console.log("PhoneGap is ready");
    }

    function backKeyDown(d) {
        navigator.app.exitApp(); // To exit the app!
        e.preventDefault(); // to disable the back
    }

make sure that PhoneGap is ready!

Update: You can leave the handler empty to disable it

回答2:

sometimes you can get blocking Back button, sometimes not.

document.addEventListener("deviceready", onDeviceReady, false);
function onDeviceReady() {
    document.addEventListener("backbutton", function (e) {
        e.preventDefault();
    }, false );
}

来源：https://stackoverflow.com/questions/12557249/how-do-i-disable-the-phones-back-button-in-android-using-jquerymobile-phonegap