App hangs on appLoadingIndicator on Android native app - microloader issue

[kevhender]

I have built my app using:

sencha app build

And deployed it to my device (Android v4.0.4) using:

sencha app package run packager.json

When the app starts on the device, it hangs on the appLoadingIndicator. I have been able to debug it to the point of understanding where the error happens, but I can't seem to get the why, or come up with a fix.

The error occurs in this function in the microloader/production.js file:

function requestXhr(uri, onSuccess, onFailure) {
        var xhr = new XMLHttpRequest();


        onFailure = onFailure || emptyFn;


        uri = uri + ((uri.indexOf('?') == -1) ? '?' : '&') + Date.now();


        try {
           xhr.open('GET', uri, true);
            xhr.onreadystatechange = function() {
                if (xhr.readyState == 4) {
                    var status = xhr.status,
                        content = xhr.responseText;


                    if ((status >= 200 && status < 300) || status == 304 || (status == 0 && content.length > 0)) {
                        onSuccess(content);
                    }
                    else {
                        onFailure();
                    }
                }
            };
            xhr.send(null);
        } catch (e) {
            onFailure();
        }
    }

The problem is that xhr.open(...) is trying to open app.json (which is present in the same directory as the index.html file running this script), but the status returned is 0 and the responseText is an empty string. So, the onFailure() method gets called and the app just hangs.

Can anybody please help with this issue? Thanks in advance...

[danny36]

I have the same problem.

[kevhender]

I have the same problem.

FYI Danny, I have posted a bug here: http://www.sencha.com/forum/showthread.php?254905

I am hoping that Sencha addresses this soon. Seems like a huge issue if people can't create working native apps...

If anyone else has insight in the meantime, feel free to pitch in.

[JRS]

I don't have answer for this problem. However, how about trying Cordova/Phonegap with your app. In the Examples forum Brice Mason has a Cordova Builder utility which automates the process.

While you are waiting for fix from Sencha - you might want to give this a try.

[kevhender]

I have figured this one out. I was using the "production" build, which is the default when doing "sencha app build".

I switched to using "sencha app build package" and it seems to be working. I have yet to figure out what the "production" build is actually for (thanks, [terrible] Sencha docs!), but hopefully this info helps others out.