“Cannot make a static reference to a non-static method” in Android

Question

I\'m having some issues with the old \"Cannot make a static reference to a non-static method\" error in my Android program. I am creating a sand falling game (similar to the

Answer 1

You have to call showDialog on a DemoActivity instance, NOT on the class itself. The only time you can call ClassName.methodName() is if the method is defined as static. showDialog is not a static method.

To fix this, you either need to instantiate a new DemoActivity or get an existing one, then call showDialog on that.

Edit: If you already have a DemoActivity instance when you instantiate this Control object, perhaps the following modification will work:

public class Control extends LinearLayout
{

    ...

    // add an Activity instance
    private Activity activity;

    // set the Activity in your constructor
    public Control(Context context, AttributeSet attrs, Activity activity)
    {
        super(context, attrs);
        this.activity = activity;
    }

    @Override
    protected void onFinishInflate()
    {
        ...

           // Use the instance activity here
           activity.showDialog(2);
        ...
    }
}

Answer 2

if the create is called by ANDROID, so you do not create the instance, just put into the create mShowDialog=this or mShowDialog=pShowDialog

in other words - have the create save the instance value also you can add a public get to get that instance value. Then you can access the instance function through the abstract by interceding the getter:

ABSTRACTCLASS.getInstance().applyFunction();