My android xamarin form app is restarted by itself - xamarin

I Just developed my first app with xamarin forms.
Its an app to collect photos and gps and send it to the server.
Every thing is working except User open the app the main page is loaded. Then he navigates to another page and minimize de app when he opens the app again it is not on the page the user navegated to its on the main page.
I don't know where to start . What could I do?

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Thanks in Advance,
Raj Kumar G
I am able to open the app from an email invite if the app is not there means it is redirected to the browser.
So what I am expecting is instead of redirecting to the browser it should redirect to App Store or Play Store.

Handling deep-linking via a web link in Xamarin for Android

I need to handle a deep-link in my Xamarin application which will come from a mail.
I managed to make it works on Android and IOS but I still have a trouble with Android.
As said in this blog i overrode the OnAppLinkRequestReceived method to handle the navigation.
The problem is that this method is triggered once per instance of the App.
For example, if i click on the link the first time it will go to the right page(page A) because the code I wrote is triggered, but if go to another page (Page B), then put the App on background, go to back my mails and click a second time on the link, it will just resume the App and open the page B, not the page A.
Do you have any ideas on how it can be triggered at each time i click on the link ?
I finally used the native android behaviour for deep-linking with Intents and it works in Xamarin

How do I make an App Inventor app be a target for Chrome Share web page?

This is for an Android app that I want to develop using App Inventor, to read the content of a web page when a user decides to share it to my app.
When you are on a web page, in Chrome, you have the option to "Share" it. If you click this option, you get a list of available apps on your Android device to pick from. How can I make my app appear on that list?
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Thanks.
This is not possible with App Inventor, unfortunately.

iOS 8 Extension

In iOS 8 is it possible to invoke extension menu from a button on website (i.e. using javascript) in safari ?
I am able to invoke the extension menu from a password field in one of my iOS APP. Like in image below.
http://blog.agilebits.com/wp-content/uploads/2014/09/Instapaper-1Password-extension.png
I want to do the same when i open my website in safari. So when user selects 1Password button from website page it should open this menu or share menu with 1Password extension. Not that user go and select share menu then 1Password.
This is not possible in Safari currently. What you are seeing in the Instapaper application is only possible using iOS SDK.
If you write a thin app around your website, this is also possible. You can signal from Javascript to your app that you want the activity used, and when the user finished, signal your website the information with Javascript.

How to set the value at app launching time in windows phone 7?

The first time the app is launched I need to display a register button. The user is only able to login to the app after registration. After the user has successfully registered no register button should be displayed when the app is launched. If the app is uninstalled and installed again registration is required once when the app is launched for the first time.
Save a flag in isolated storage. If it's there when you start the app, then its not the first launch. If it's not there, then save it and show the button.

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