gistfile1.java

private int popupStack = 0;
private boolean showingPopup = false;

public void showPopup() {
    
    if (!showingPopup) {
        showingPopup = true;
        
        //if this isn't popup number 0 one should be eliminated from the stack
        if (popupStack > 0) {
        	popupStack--;
        }
        
        final Dialog dialog = new Dialog(this) {
            @Override
            protected void onStop() {                    
                super.onStop();
                showingPopup = false;
                if (popupStack > 0) {
                	showPopup();
                }
            }
        };
        dialog.setContentView(R.layout.pop_up);
        dialog.setTitle("Not enough points");

        dialog.show();
        z = 1;
        Button btnCancel = (Button) dialog.findViewById(R.id.cancel);

        btnCancel.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                dialog.dismiss();
            }

        });                        
    } else {
        popupStack++;
    }
}