PhoneGap确认回调函数

Question

I'm currently working on a mobile application using jQuery Mobile and PhoneGap 2.0.0. The app is an html file with different div elements that represents the screens of the app and a native container is used to display the screens using javascript code.

For several actions, I have been using the native alert and confirm functions to interact with the user. For example:

function customBeforeMenuItemClick(screen, menuItem) {

if (screen === "APPROVALQUEUE" && menuItem === "Close") {
    return (confirm('Do you want to close without submitting changes?'));
}
}

Here the function takes the return from the confirm popup and uses it in an other function (over which I have no control) to process the action of closing or not the app.

Now I need to modify the title of the popups and thought of using the Phonegap functions navigator.notification.alert and confirm. However, these functions are asynchronous and the execution of the script continues.

I have tried to use the callback method to return the correct boolean but the function using the confirm popup has alreday finished executing

function onConfirmClose(button){
return (button == 1);
}

function toClose(){
navigator.notification.confirm("Close?", onConfirmClose,
 'Do you want to close', 'yes,no'); 
}

function customBeforeMenuItemClick(screen, menuItem) {

if (screen === "Start" && menuItem === "Cancel") {
    toClose();
}
else {return true;}
}

In this example code, the popup flashes briefly before disappearing when the app is closed after function toClose() has finished.

I have tried using the callback function to set a global variable that would be used to return the result of the popup but it didn't work.

Is there a way to get the result of the navigation.notification.confirm ?

Answer 1

You may close the app like this:

// you may alert the callback button to make sure which button sends which index
var YES_BUTTON = 1; // assuming that the 'YES' button will send the index 1

function onConfirmClose(button){
    // alert(button); ?
    if (button == YES_BUTTON) {
        navigator.app.exitApp(); // close the app
    }
}

If that still fails, you may take a look at the API Documentation then start from the example for your test.