Link preview not working for Flutter web application url - flutter

I have created a web application using flutter in which i have displayed an image in a page. If I try to share this web page url in social media like facebook and twitter, the image is not displayed in link preview.

Related

Share a text from my app as a Facebook post in Flutter

I want to share a text from my app as a Facebook post using the Facebook app, not a website.
I tried a lot of URLs but it keeps opening facebook in chrome, not in the app.
I know the apps URL but not for sharing a text and making a post.

Link in the app title in the Facebook post

I created a Facebook application linked to my android application with the Facebook SDK. I allow users to share images from my android application, but I really don't understand how to edit the link in the application title of the Facebook Post.
I mean:
If I click on the "Shazam", I will be redirected on the Shazam's web site. How to customize this link?
I only had to add the Web platform in the Developer Console, in which I specified the link.

Custom login page

Is there any way to customize Facebook login page on mobile devices ?
I am working on the web application which share images from this app on Facebook wall. But I don't want to have in the app those buttons which allowes you to exit the app, or switch to another tab.
I use this meta to disable upper and bottom bars in the Safari
But in the FB Login page is for example button (Get Facebook for iPhone and Browser faster) which switch me to the Appstore.
I am including this image of facebook login page, where you can see that links which I need to get out :(
http://fotonaut.lukaskosik.com/photo.JPG
You can't tweak this page. It's hosted by Facebook and out of your control.

Facebook share not working in iphone mobile browser

I am using phonegap and jquery
mobile for Facebook share link. It's working in web browser but not in mobile browser.
My share link is:
http://facebook.com/sharer.php?s=100&p[title]=&p[url]=mysitename&p[images][0]=http://mysitename/storage/information_promotion/719/4_1361103843_SeafoodPizza.jpg&p[summary]=test
Please help.
This is not the working one url. You have to make it https://m.facebook.com/sharer.php?u=
Also you need to make url site whit Facebook Open Graph META Tags to get the details.

Issue with facebook android app integration

I am posting image to facebook using android app. On the facebook page, there appears a link with name of my app just above the image posted. How to add a url to this link ? Rightnow, if we click this link, it says page not available.
Set up a website or canvas page URL in your app settings.