Store data and global variables using the Application object
Solution 1
Looking at the code you could just make the variable a public static.
public class HelloApplication : Application
{
public static int GlobalVariable = 1;
}
Usage:
HelloApplication.GlobalVariable = 10;
Solution 2
change:
((HelloApplication)GetApplication())
to
((HelloApplication)GetApplicationContext())
Garry
Updated on June 04, 2022Comments
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Garry about 2 years
In Xamarin, I am wanting to store data and global variables using the Application object.
I looked at this resource for this code: http://www.helloandroid.com/tutorials/maintaining-global-application-state
Here is my code:
public class HelloApplication : Application { private int GlobalVariable = 1; public int GetGlobalVariable() { return GlobalVariable; } public void SetGlobalVariable(int GlobalVariable) { this.GlobalVariable = GlobalVariable; } }
I am trying to reference the class using this code:
((HelloApplication)GetApplication()).setGlobalVariable(10); int variable=((HelloApplication)GetApplication()).getGlobalVariable();
When I build the application I am getting this error for both the above lines of code:
The name 'GetApplication' does not exist in the current context
Can I please have some help to get this code working?
EDIT
Here is my code:
HelloApplication state = ((HelloApplication) this.ApplicationContext); state.SetGlobalVariable(10); int globalVariable = state.GetGlobalVariable (); Toast.MakeText (this, "Global variable " + globalVariable, ToastLength.Short).Show ();
This is the error I am getting:
UNHANDLED EXCEPTION: System.InvalidCastException: Cannot cast from source type to destination type.
Can I please have some help to get this working?