Main.java

package com.example.app;

import java.util.ArrayList;

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Spinner;
import android.widget.TextView;

public class MainActivity extends Activity implements AdapterView.OnItemSelectedListener {

    private ListView list;
    private Location locations;
    private Spinner spinner;
    private ArrayList<Location> totalLocations=new ArrayList<Location>();
    private ArrayList<Location> sortedLocations= new ArrayList<Location>();
    private String[] ratings={"1 Stern","2 Sterne","3 Sterne","4 Sterne","5 Sterne"};
    private ArrayAdapter<Location> adapter;
    ArrayAdapter<String> spinnerAdapter;


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

        if(savedInstanceState==null){
            list= (ListView) findViewById(R.id.listViewListNightlife);
            spinner= (Spinner) findViewById(R.id.spinnerListRatings);
            setKneipenListe();
        }

        this.sortedLocations = (ArrayList<Location>) this.totalLocations.clone();

        this.adapter= new MyAdapter(this, this.sortedLocations);
        list.setAdapter(adapter);

        this.spinnerAdapter= new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, ratings);
        spinner.setAdapter(spinnerAdapter);
        spinner.setOnItemSelectedListener(this);
    }

    public class MyAdapter extends ArrayAdapter<Location>{

        public MyAdapter(Context c, ArrayList<Location> list){
            super(c,R.layout.list_row,list);
        }
        @Override
        public View getView(int position, View convertView, ViewGroup parent) {

            View root= convertView;
            TextView name= null;
            TextView adresse=null;
            TextView type= null;
            TextView rating=null;

            if(root==null){
                root= getLayoutInflater().inflate(R.layout.list_row, parent, false);

            }
            name= (TextView) root.findViewById(R.id.textViewListRowHeader);
            adresse= (TextView) root.findViewById(R.id.textViewListRowAddresse);
            type=(TextView) root.findViewById(R.id.textViewListRowType);
            rating= (TextView) root.findViewById(R.id.textViewListRowRatingStars);

            name.setText(""+getItem(position).getName()+"");
            adresse.setText(""+getItem(position).getAdresse()+"");
            type.setText(""+ getItem(position).getType()+"");
            rating.setText(""+ getItem(position).getRating()+"");
            return root;
        }
    }
    @Override
    public void onItemSelected(AdapterView<?> parent, View view, int position,
                               long id) {

        int ratingSpinner=position+1;
        int ratingList;

        this.adapter.clear();

        for(int i=0; i< totalLocations.size();i++){
            ratingList= totalLocations.get(i).getRating();

            if(ratingList>=ratingSpinner){
                this.adapter.add(totalLocations.get(i));
            }
        }
    }

    @Override
    public void onNothingSelected(AdapterView<?> parent) {
    }
    private void setKneipenListe() {
        locations= new Location("Hexenlochküche","Hexenloch 13","Restaurant",4);
        totalLocations.add(locations);
        locations= new Location("Cafe Mayerhofer","Marktplatz 16","Cafe",5);
        totalLocations.add(locations);
        locations= new Location("Bergstüble","Im Mäderstal 4","Restaurant",4);
        totalLocations.add(locations);
        locations= new Location("Fallenbengel","Allmendenstraße 1","Restaurant",3);
        totalLocations.add(locations);
        locations= new Location("Klimperkasten","Bahnhofstraße 70","Kneipe",2);
        totalLocations.add(locations);
        locations= new Location("Gaststätte Zur Tanne","Bismarkstraße 18","Gaststätte",2);
        totalLocations.add(locations);
        locations= new Location("Viva Cafe-Bar","Bismarkstraße 18","Kneipe", 4);
        totalLocations.add(locations);
        locations= new Location("Der Speicher","Am Großhausberg 9","Kneipe",5);
        totalLocations.add(locations);
        locations= new Location("Pizzaria Europa","Friedrichstraße 12","Pizzaria",4);
        totalLocations.add(locations);
        locations= new Location("Gasthaus Bad","Baumanstraße 26","Restaurant",5);
        totalLocations.add(locations);
        locations= new Location("Cafe Tannenhof","Oskar-Bürklestraße 2","Cafe",1);
        totalLocations.add(locations);
        locations= new Location("Waldhotel am Stausee","Preßwitzerstraße 5","Bar",2);
        totalLocations.add(locations);
        locations= new Location("Cafe Mayerhofer","Marktplatz 16","Cafe",5);
        totalLocations.add(locations);
        locations= new Location("Bergstüble","Im Mäderstal 4","Restaurant",4);
        totalLocations.add(locations);
        locations= new Location("Fallenbengel","Allmendenstraße 1","Restaurant",3);
        totalLocations.add(locations);
        locations= new Location("Klimperkasten","Bahnhofstraße 70","Kneipe",2);
        totalLocations.add(locations);
        locations= new Location("Gaststätte Zur Tanne","Bismarkstraße 18","Gaststätte",2);
        totalLocations.add(locations);
    }

}