Get WindowManager using GetSystemService. Where is the class WindowManager?

Question

User19848 posted

Hello,

I want to use the Context.GetSystemservice(Context.WindowService) method to get the WindowManager. After some search I have found that there is no WindowManager (at least exposed to the developer) but only when you are in an Activity you can get the IWindowManager and access what you need properly.

I want to accomplish this in a class library when only have the ApplicationContext and the GetSystemService(Context.WindowService) so I can have access to the DefaultDisplay so I can have the device screen related information.

Doing this IWindowManager windowManager = (IWindowManager)ApplicationContext.GetSystemService(Context.WindowService); will return null.

Thank you.

Answer 1

User401 posted

Hi,

this should work

  IWindowManager windowManager = Context.GetSystemService(Context.WindowService).JavaCast<IWindowManager>();

according to that post mono-for-android.1047100.n5.nabble.com/IWindowManager-td4845524.html

Answer 2

User19848 posted

Worked like a charm!

Thank you.

Answer 3

User2029 posted

ty, starting with version 4.20.0.28 this probem reappeared.

Answer 4

User82076 posted

It seems that JavaCast does not exists....

Answer 5

User12460 posted

Add the following using statement. That will import the Extension method JavaCast<T>

using Android.Runtime;

Answer 6

User1071 posted

This did my day Yey :smiley:

Answer 7

User222192 posted

The name 'Context' doesnot exist in the current context ? What does this mean and how can I remove this is there any idea ?

Answer 8

User200230 posted

using Android.Content

Answer 9

User298773 posted

With --> IWindowManager windowManager = Context.GetSystemService(Context.WindowService).JavaCast();

I have the error "An object reference is required for the non-static field, method, or propery 'Context.GetSystemService(string)'".

Answer 10

User334768 posted

What worked for me is

IWindowManager windowManager = Application.Context.GetSystemService(Context.WindowService).JavaCast();