Java tutorial
package geert.stef.sm.beheerautokm; import android.content.Intent; import android.graphics.drawable.ColorDrawable; import android.support.v7.app.ActionBarActivity; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.Button; import android.widget.TableLayout; import android.widget.TableRow; import android.widget.TextView; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; import java.util.ArrayList; import java.util.Date; import java.util.concurrent.ExecutionException; import android.widget.ListView; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Date; import java.util.concurrent.ExecutionException; public class HistoryActivity extends ActionBarActivity { Manager manager; Car selectedCar = null; private ListView listView; private RitListAdapter ritAdapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_history); getSupportActionBar().setBackgroundDrawable(new ColorDrawable(getResources().getColor(R.color.darkblue))); Bundle b = getIntent().getExtras(); manager = b.getParcelable("parcel"); selectedCar = b.getParcelable("car"); getSupportActionBar().setTitle(selectedCar.getCar()); this.getRitten(); ArrayList<Rit> rittenSelectedCar = new ArrayList<>(); for (Rit r : manager.getRitten()) { if (r.getCar().equals(selectedCar.getLicensePlate())) { rittenSelectedCar.add(r); } } listView = (ListView) findViewById(R.id.lvRit); ritAdapter = new RitListAdapter(this.getApplicationContext(), rittenSelectedCar); listView.setAdapter(ritAdapter); } public void parseJson(String json) { try { JSONArray jArray = new JSONArray(json); for (int i = 0; i < jArray.length(); i++) { try { JSONObject oneObject = jArray.getJSONObject(i); // Pulling items from the array int ritID = oneObject.getInt("RitID"); String car = oneObject.getString("Car"); double distance = oneObject.getDouble("Distance"); String driver = oneObject.getString("Driver"); System.out.println(oneObject.get("Datum")); System.out.println(oneObject.getString("Datum")); String date = oneObject.getString("Datum").substring(0, 10); String date2 = oneObject.getString("Datum"); manager.addRit(ritID, car, distance, driver, parseDate(date2)); } catch (JSONException e) { // Oops } } } catch (JSONException e) { e.printStackTrace(); } } public static Date parseDate(String date) { try { return new SimpleDateFormat("yyyy-MM-dd").parse(date); } catch (ParseException e) { return null; } } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.menu_history, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { int id = item.getItemId(); if (id == R.id.action_logOff) { Intent intent = new Intent(HistoryActivity.this, MainActivity.class); intent.putExtra("parcel", manager); this.startActivity(intent); this.finish(); return true; } if (id == R.id.action_about) { Intent intent = new Intent(HistoryActivity.this, AboutActivity.class); intent.putExtra("parcel", manager); this.startActivity(intent); } return super.onOptionsItemSelected(item); } public void getRitten() { String json = null; try { json = new GetRittenTask().execute().get().toString(); } catch (InterruptedException e) { e.printStackTrace(); } catch (ExecutionException e) { e.printStackTrace(); } parseJson(json); } }