Quote from luishp on March 9, 2020, 7:53 pm

Thank you @asmat!
Just in time with the new version XML editor :)

To everyone willing to use this plugin please note it's only for compiling into Mobile (PhoneGap)

 

Quote from Ronnie on March 25, 2020, 8:48 am

Hi @asmat,

I tried your barcode function in my sample project, compiled to PhoneGap, and it works fine. LocalStorage, while OK, is not good for long-term records...  I'm exploring Cordova/PhoneGap's FILE api.

Any  advice to get the read and write to file function working is appreciated. I added

<plugin name="cordova-plugin-file" source="npm" spec="~6.0.2" />

and try the sample read/write but nothing happens. Only your barcode function is working.

 

Quote from asmat on March 25, 2020, 3:13 pm

Hi Ronnie you are not need to add this

<plugin name="cordova-plugin-file" source="npm" spec="~6.0.2" />

This plugin already added by default.

I made a sample for reading and writing file to the file system of mobile  take a look at the attachment.

 

Quote from Ronnie on March 26, 2020, 3:38 am

Hi @asmat, thanks for the great help. Will explore the demo...

Quote from Ronnie on March 26, 2020, 4:16 am

Hi @asmat, it works after I removed below script from my sample project. Yes, no need for that script...

<plugin name="cordova-plugin-file" source="npm" spec="~6.0.2" />

Will explore further on the file api since you've provided a great head-start on the possibilities. Thanks again!

Quote from Ronnie on March 26, 2020, 8:59 am

Hi @asmat, here's my feedback after testing for a while...

The cordova file plugin  also relies on LocalStorage which, technically means, there  is no difference from using GetItem/SetItem functions in VNW directly.

I checked and found:

cordova-plugin-nativestorage  (https://www.npmjs.com/package/cordova-plugin-nativestorage)

Maybe, this could be the one allowing  reading/writing to permanent file...

 

Quote from Ronnie on March 27, 2020, 4:00 am

Hi @asmat,

I'm still learning JS... I tried using the cordova nativestorage plugin but just couldn't get it to work. I've attached a modified version of your working sample fileWriteRead to include the extra buttons

I added "plugin name="cordova-plugin-nativestorage...."  in the Platform>Mobile section as I noticed this plug-in was not installed by default. After adding them, I checked and noticed it's included in the phonegap build package.

I might have missed something somewhere to read/write the file where I took the scripts from the web. Any  advice is appreciated

Regards, Ronnie

Quote from asmat on March 28, 2020, 3:10 pm

Hi Ronnie lets try this

set this code for write:

BEGINJS
var obj =document.getElementById('area1').value;
NativeStorage.setItem("reference", obj,()=> alert('Success'),()=> alert('error'));
ENDJS

and this code for read:

BEGINJS
NativeStorage.getItem("reference", (obj)=>document.getElementById('area2').value=obj
, ()=>alert('error'));
ENDJS

 

Quote from Ronnie on March 30, 2020, 3:09 am

Hi @asmat, as always, thanks for the guidance. Appreciate the time and effort you've provided.

May I know where the data is stored? Is it in LocalStorage or in a file folder (ideal)? Reason I asked is that after successfully saving the file, i uninstall the program, and then reinstall. Then I tap on READ but there was an error.

Quote from asmat on March 30, 2020, 6:42 am

Hi @Ronnie

The Data store in the apps root folder(it is hide if you did not root your phone). I have test in android studio the file created in this path: android/data/Application id/cache/example.txt you can see better in the attach file.

when you uninstall app, the apps root folder will remove.

Quote from Ronnie on March 30, 2020, 3:44 pm

Hi @asmat, that’s great. I could see both files and cache folders created using EFS Explorer. But didn’t get to see the actual file, and as you said, it’s hidden unless the phone is rooted.

I noticed that if I reinstall the apk without uninstall, I could install successfully on my Sony Xperia XZ. However, if I rebuild the apk again from PhoneGap, I cannot install as it reported error. I could only install after I uninstall the existing one. That would remove the saved file too, which is sad.

Some years back, I was developing an Android app using some development tools, and regardless of whether there is a new build of my app, users can install them without affecting the user records (SQLite) saved in <app id>/files/ folder.

I hope to reproduce this with VisualNeoWeb. Is there any specific commands or scripts that can be added into CONFIG.XML to enable, read/write storage, and to overwrite previous builds?

Quote from asmat on June 11, 2021, 9:24 am

Hi, @Ronnie, I have found a solution to your problem. add this line code in config.xml:

<preference name="AndroidPersistentFileLocation" value="Compatibility" />

whenever you uninstall and reinstall the application the saved data will not be removed.

 

Quote from See_Half on June 17, 2021, 5:28 pm

Quote from asmat on March 25, 2020, 3:13 pm

I made a sample for reading and writing file to the file system of mobile  take a look at the attachment.

 

Do you have sample Android APK for this ?

I'm very interesting to try on my mobile device.

Quote from asmat on June 18, 2021, 2:15 pm

Hi See_Half, making android APK is not hard with Cordova it takes around 5 minutes.

Be careful when you compile your app with Cordova you must change phonegap.js to cordova.js from index.html:

<script src="phonegap.js"></script> //Change to this:
<script src="cordova.js"></script>

if you do not do this, you will not use any Cordova plugin.

See the attachment, I have made APK.
The attached zip file is the .apk file,  you just change the extension to .apk and then install it on your phone.

 

Quote from luishp on June 18, 2021, 5:30 pm

Be careful when you compile your app with Cordova you must change phonegap.js to cordova.js from index.html:

@asmat @see_half this is not necessary anymore when working with last VisualNEO Web version

Quote from asmat on June 18, 2021, 8:11 pm

Thank you @luishp