Palatis

public class MyCustomView extends View {
	public MyCustomView(Context context) { this(context, R.style.MyCustomView); }

	public MyCustomView(Context context, AttributeSet attrs) { this(context, attrs, 0); }

	public MyCustomView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);

        final int defStyleRes = 0;

Palatis

import android.support.v7.app.AppCompatActivity;
//import android.app.Activity; // import this if you don't want to use the AppComat package.
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewParent;
import android.view.Window;
import android.view.WindowManager;

/**
 * the activity with a Dialog theme doesn't really respect the "wrap_content" params.