fabricio fabricio - 2 years ago 269
Android Question

Xamarin.Android Internet Permission

I'm using Visual Studio 2015, min sdk version 14.
I have read everywhere that after building a release version you need to specify internet permssions in the manifest. (although some people say that it's only neccessary if your a building for android version below x version).

This is a extract of my manifest:

<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"></uses-permission>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<application android:label="<app name>" android:icon="@drawable/icon"></application>

The thing is that when building and running straight from Visual to my device, I can't access internet from my app.

In the device's application manager I can see that the permissions assigned to my app are the following (wether it's deployed from visual studio or installed from Google Play):

- Modify or delete the contents of your USB storage

- Full Network access

- View Network Connections

On the other hand, when uploading the app to Goolge Play (alpha test), when I click install in my phone, the popup that shows the permissions that the app is going to use, shows it needs is "Access to Photos/Media/Files"

The way my app is accessing internet is through a PCL Project.
Basically this is the chunk of code that does (or does not) all the magic.

if (CheckIfThereIsConnection())
HttpWebRequest request = WebRequest.Create(urlRequest) as HttpWebRequest;
request.Headers[HttpRequestHeader.Authorization] = "my token here";

using (WebResponse response = await request.GetResponseAsync())
using (Stream stream = response.GetResponseStream())
StreamReader reader = new StreamReader(stream);

string line = string.Empty;
StringBuilder sb = new StringBuilder();

while ((line = reader.ReadLine()) != null)

T deserializedObject = JsonConvert.DeserializeObject<T>(sb.ToString());

return deserializedObject;

catch (Exception ex)
throw new Exception("My custom Exception", ex.InnerException);

I've looked everywhere whitout any luck. Could someone provide me a further and detailed explanation, or point me out some documents to have a look??

Answer Source

You are most likely running into an issue with the Linker stripping away something that your application needs. I would highly recommend that you review our documentation on this topic here:


You can then attempt to use linkskip (https://developer.xamarin.com/guides/android/advanced_topics/linking/#linkskip) or a custom linker configuration file(https://developer.xamarin.com/guides/cross-platform/advanced/custom_linking/) to ensure your assemblies are included in your final package.

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