Debug Xamarin Sports Sample Locally - android

I am having trouble debugging the Xamarin Sports Sample locally on my development machine, so I can debug both the mobile app and the services on the same machine.
I have got the solutions open in Visual Studio 2015. I created my Google API Credentials and updated the settings with that info. I set the Azure domain to my local IP address (also tried localhost and a fake domain name). I added the authorized javascript origins and redirect URI's into the Google interface with the various combinations of IP, localhost and fake domain name.
It looks like the redirect URI cannot be an IP address. I have tried putting the fake domain name into my hosts file. I can run the services solution and it displays in the browser properly. I can hit /login/google in the browser and it looks like it works.
When I run the mobile solution in the emulator and click the login button, I get errors. During my troubleshooting, I have seen various errors, like name not resolved and a few others. I suspected that I could modify the device emulators hosts file to include the fake domain name, but I am not able to get the file system to be read-write, even after trying adb remount. That command says it was successful, but the adb push tells me the file is read-only.
I am using a Nexus 6 API 23 virtual device, if that matters.
Has anyone managed to get this sample to debug both mobile and services locally? Any suggestions on how I can modify the hosts file to see if that works? Any other thoughts on getting this to all run locally?
I have not tried running the iOS project, yet. Will that run into the same challenges?

Your device/emulator probably doesnt´t have access to your server machine.
Check your server local host ip, and run this with PowerShell as administrator:
netsh http add urlacl url=http://192.168.X.X:XXXX/ user=everyone
Replace the ip:port with your host ip and the app port.
Then create a new <Binding> in your applicationhost.config pointing to the above ip:port.
More details (and possible duplicate) here:
How to call your own ASP.NET MVC project preaent on same machine from xamrin webview

Related

How to connect to local host of another machine with android emulator

I am developing an app for android (with react-native) which is running in android studio emulator. This app should connect to a server, but I am in the testing phase and I run the server in a localhost port. but the localhost of another machine (which is in the same network that I am)
let's say the (local) IP of the other machine is 172.17.240.223 and the port which the server is running on is 8080
when I type 172.17.240.223:8080 in my browser (laptop browser), I get the response and there is no problem. Even when I type this in my browser in the emulator I get the response, but this won't happen in app. why is that?
More generally, it's not possible to customize the URL and how the bundle gets loaded. This flexibility is useful to have.
check issue on github here
in this case ,you can use testflight for IOS testing and for android just create apk.

Access Chromebook's localhost from Android apps?

I have a Chromebook that I've set up in Developer Mode, with a crouton-installed version of Linux running alongside. Within the Linux crouton, I'm running a simple web server.
My question is whether it's possible to access that server using any Android apps that are also running on that Chromebook?
Android apps have been installable natively on ChromeOS for some time, but everything that I've read says that they run in some kind of sandbox. ChromeOS itself is pretty tight with its firewall rules as well.
Just to get a start, I'm trying to use the Android version of the Chrome browser to load up a page that's running on a web server in the Linux crouton. I've tried localhost,127.0.0.1, and the Chromebook's current IP address.
I followed the instructions at https://developer.android.com/topic/arc/index.html to enable Developer Mode on the Android side and also, I think, loosen up those firewall rules on the ChromeOS side.
Is there some secret sauce that I'm missing? Is this even possible at all?
I had the exact same question and found this:
https://developer.android.com/topic/arc/index.html#network
It seems that in essence there is no IP traffic allowed from local Chrome to the Android web servers..
Update (thanks jlb for the ping)
However, you can run ifconfig in crouton. And then you can access your content via that IP address. I wonder if Firefox takes that shortcut for you..
Leveraging #tomdemuyt's post, his citation source says that android apps will be assigned a private IP address, so you can access local IP traffic, just not with localhost or 127.0.0.1.
For example, from termux execute ifconfig and look for the local IP address. Then run your service, e.g. node from termux, or kWs, any Android app.... and point Chrome to http://<your-local-ip-address>:<your-service-port>
127.0.0.1 and localhost will work from other Android apps, just not Chrome.
The solutions by jlb and tomdemuyt are for accessing a android app from chromeos (i.e. an ftp server)
However, I needed the opposite way (accessing an node server running in the linux virtual environment from android chrome browser) and that was basically the question ChillyPenguin asked for.
I finally solved it:
Start your webserver and ensure that you can access it with localhost (in my case http://localhost:8080
Within the chromeos terminal run
hostname -I
100.115.92.203 (and an ip:v6:adress:...)
(or ip addr show which is more verbose)
Now I was able to access the web server from android chrome with http://100.115.92.203:8080

Ionic can't run my app from the device browser

I am developing an Android app using ionic. When I execute ionic serve I can see my app on my computer through http://localhost:8100
I checked my ip address using ipconfig and it's 192.168.0.3, so I tried using this IP from my device (http://192.168.0.3:8100), but I got a 404. I then tried from the very same computer I am developing from, and I got a 404 too!
Funny thing is, ionic uses two servers:
If I put http://192.168.0.3:35729 I can see live reload server both from my computer and my device. I didn't have to touch anything on my router to forward ports, and both my computer and my phone are on the same network. Note that I cannot access http://192.168.0.3:8100 neither from my phone nor from my computer (the same one I am using to develop)
Also I am serving a REST web service on 8080 from a J2EE app, and I can see it in my device. My app consumes this service, and from the computer, everything works fine. But from the device, although I can use the phone browser to access the REST server, my ionic app gives me another 404 error!
Can anyone point me in the right direction?
You will have to change the address Ionic has configured. Run:
ionic address
Then it will provide you a list of available addresses:
Multiple addresses available.
Please select which address to use by entering its number from the list below:
1) 192.168.0.107 (eth1)
2) localhost
Select your local IP from the available options. This must solve the issue you're facing.

How to access computer's local host on Android phone?

I'm currently using Android Studio to prototype an Android application. I'm trying to use the Google App Engine Servlet Module to write a prototype backend for my app. I can run the dev server and access the page via localhost:8080. However, I cannot access this address on my physical android phone over the same wifi connection.
I understand that I cannot use the term localhost within the Android's web browser because that does not refer to the computer's instance of localhost. I tried looking up my computer's ipv4 address and using the "ipaddress:8080" to access the page on the phone, but that does not seem to work either for the Servlet Module within Android Studio.
I have an older server application running on Apache Tomcat within Eclipse. When I run that, I am able to utilize the "ipaddress:8080" method to access the page on my android device.
Any ideas as to why this works while the Android Studio Google App Engine Servlet Module dev server fails? Any suggestions as how to resolve this issue would be greatly appreciated!
You can access the localhost in the following way : 10.0.2.2:8080
I realized that the server did not bind to my IP address. I changed configuration settings within Android Studio for my server to use http address "0.0.0.0". It now works.
In my case, I was receiving null for list request after deploying backend (running on Android device). For some reason backend received requests and didn't respond. The fix for me was to re-deploy and create new project, syncing with my android project front-end code. Then as a result my front end was connected to the back-end exactly as described here: https://github.com/GoogleCloudPlatform/gradle-appengine-templates/tree/master/HelloEndpoints step 2.3, and two additional fields were generated in my JSON: "kind" and "etag"

Android:Socket programming between phone and system

I am trying to write a client server application, in which the client is a android device.
I am not confident on socket programming.
I have written a server side application and a client side that runs on my emulator.
Will the same application work between a real android device?
I have edited your question (once its reviewed it will show up). From what I understand, your question is generic. It works on my emulator, will it work on my device.
The answer is yes. The emulator connects to 10.0.2.2 which redirects to 127.0.0.1 on your host machine right ? This is how you would have got it working.
To get it working from a device you will need to do the following
Load your java server on your real ip address on your desktop
Ensure that your desktop is on the internet and the ip address visible to the internet (open)
Ensure that your android phone points to the public ip address of your desktop.
Now, I know your worry :) open ip address. So, you can use a ec2 (free amazon ubuntu instance), install java on it and run your server as java -jar . From eclipse you can export a jar file (runnable jar file) with lib in your jarfilename_lib path.
You can use spring For android via HTTP request.
Here is an example.
When you have static ip in server you should set that static ip in your actual device.If you are running your app on emulator you must set 10.0.0.2.

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