package com.example.stackrechner;

import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;

private Stack zahlenStapel = new Stack ();

public class MainActivity extends ActionBarActivity implements ActionListener {

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}

	  public void actionPerformed(ActionEvent event) {
		    String cmd = event.getActionCommand();
		    if (cmd.equals("Enter")){
		    	String strInhalt = R.layout.tfEingabe.getText();
		        Double zahl = new Double (strInhalt);
		        zahlenStapel.push(zahl);
		        R.layout.tfAnzeige.setText ("");
		      }
	  }
}