Develop Reference

Android Questions about Mozilla GeckoView

I am a beginner Android developer.
I using the 'WebView' had tried to make a Android App.
However, the speed of the web is too slow.
So the Internet search results found GeckoView.
But homepage has been difficult for me to understand I do not know English well.
My questions:
Can I use GeckoView instead of the WebView? Is it simple?
Can I use a code library that just adds to the 'build.gradle' in Android Studio?
Is there another altenative?

Yes, you can use GeckoView also....
Android WebView is not intended for building browser application because, many advanced Web API'S are disabled.
And different phones might have different versions of WebView all of which your app has to support....
Geckoview is open source library that allows you to render web content on Android using the Gecko web engine...
I made simple application with webview, just check out you'll get some help
https://github.com/malikhimani21/Project-2
In some cases, a WebView is a good option for displaying trusted first-party access to your web pages from either a browser or your own app
check out this link
https://developer.android.com/guide/webapps

Gecko view is only experimental. You can't use for production
https://wiki.mozilla.org/Mobile/GeckoView
So your only choice would be a webview. If you are great in javascript, I would recommend you to use react-native. This is how facebook is made, and you can follow extensive documents mentioned here.
https://facebook.github.io/react-native/

Migrate my E-commercial website on mobile phone platform using PhoneGap

I have just created a website based on prestahsop template (PHP + SMARTY), and I have made it work online.
Now I want to migrate the project on mobiles. I searched for several means of doing that, finally I am about to use PhoneGap for my solution.
But I have no idea if that can encapsulate the whole project on the mobile platform, and ideally be launched on Apple store. If not, I would like to get some advice to make changes.
Anyone having former experience can come to help? Thanks so much!

In addition to andre3wap response, you can use Prestashop Webservice API to link your application to your website. I've already done this in the past, the tricky part comes when you need to create an order in your Prestashop website from your application. But it's completely doable.
You will have to create an HTML + Javascript application with PhoneGap, that calls Prestashop via Ajax requests. If you want your application to work offline (and only create the order when the customer is back online) you will have to load every products on installation and sync when the app is online.
It's a lot of work.
EDIT related question: How to integrate prestashop with android?

If your web site only consists of HTML pages, yes; PhoneGap will be able to do most of the work(Just upload your HTML pages in a folder to build.phonegap.com for the conversion), there are other methods that can do the conversion, but that one is easier to me. (Read their documentation)
If your web site was created from a server side language, NO, phoneGap will not be able to fully convert it into a full fledged HyBrid App.
It gets very tricky when it comes on to Server Side scripting + phoneGap. What you can do is build html pages, and create "APIs" to load the data in the APP and use JavaScript to parse the data respectfully. (That phoneGap can handle)
You can read this article for an even more detailed explanation:
Usefull Article

How to show web content in android application without using webView

i am still developing android static app in which all the content are static , all the content which is deign by me nothing is taken by website but now
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i am starting to develop web app that is, all content coming from website .
i searched lot of thing i got only "WebView" in which whole website will show in my WebView .
So there is a Problem, i want to get a specific content from any website like Event images from website and show in my Activity.
Please help me to start web app development.
is there any api ??
Thanks in advance.
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In my understanding, what you want to create is an Application that will show content from a website, but not using WebView.
For those webs that do not provide an API (your own website, for example), you may want to have a look at JSOUP and give it a try.
For those webs that have API (for example: twitter), you should read its document and try some HTTP request.

You'll need to write APIs which'll allows you to make requests from your android code to the server code. Using these requests you'll be able to fetch data stored on a web server in a friendly format that can be used to display content on your android app.

I see you have clear some concepts, like Web app, browser, events. But remember the Logic from webApp is with javascript, so the Webview download the HTML to the device and if you have activate javascript in the webview thats work fine, remember you have some restriction with the hardware and process with webapps.
But android developer has a tutorial to create web apps.
When you create a native app doesnt mean is static, you can use Json, XML, Rest API, Web services, etc. to comunicate with a web server.
I recommend see how connect android app with external resources and webserver, here is an example.

CSS loading issue with Android ICS

I have an Android ICS 4.0.3 installed in my phone. I have created one Mobile Web Application (test url http://drupal.langoor.mobi), for which I serve the HTML page from the MySQL database in the backend dynamically.
Problem:
The html page is not rendered by the default stock browser of Android and Dolphin browser.
This problem does NOT occure in chrome, firefox, safari mobile browsers.
To figure out the problem, I followed these approaches:
Used Adobe Shadow to do remote inspect of the HTML Page, which did NOT help much becuase I was NOT able to see any error in content loading.
Assuming Javascript/jQuery conflicts to be a problem, I tried removing all the linked js files which are served dynamically from server (not Static), then the HTML page was rendering but with no style applied.
I tried searching and found this link but it's not helpful:
Android - html from android_assets in WebView, CSS not loading in ICS
Please help me out with this.

After digging more around Problem, I found that main cause for problem was, content being sent in Uncompressed format from Server and because of which Android ICS's default and Dolphin Browser are not able to render it properly.
Here is the link where i have mentioned exact cause of problem.
Enabling data compression for Apache2 + FastCGI setup
Thanks

emulator not displaying web content properly

I'm using webview to display content from certain URL.
Check 2nd and 3rd links by opening separately in your computer browser from here
2nd link
and
3rd link
.
2nd and 3rd links works fine in computer browser but when I try to load them in webView, it is not getting properly displayed.
in 2nd link, link is getting opened, but charts are not getting displayed while in 3rd link nothing is getting displayed at all.
3rd link also contains a chart made using 2nd link.
Is this problem occurring because of any limitation of android emulator?
Note that I TRIED WITH 4.0 EMULATOR, BUT I GET THE SAME OUTPUT...
ANY HELP WILL BE LIFE-SAVER !!!
Screen Shot

It appears the links are all using SVG. That is introduced in 3.2 as a quick google shows: https://www.google.com/search?q=android+svg+browser+support&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a
This is not supported in 2.2, I would recommend using a simulator version of honeycomb, 3.2 or IceCreamSandwich.

One of the common reasons for the web page to appear crumpled in mobile is because they are designed for browser width and height and not mobile versions.Simple example: See the difference in facebook page on browser and on phone. It fits properly because it the mobile version ( m.facebook.com,m.google.com).If you can , then get the mobile version of the webpage.