Leider hat die Verbindung gestoppt ⇐ Java

[Anonymous]

Ich versuche, eine einfache Android -App zu erstellen, um eine Verbindung zur Localhost -Datenbank herzustellen und Daten aus demselben abzurufen. Ich benutze Genymotion -Emulator. Jedes Mal, wenn ich die Anwendung starte, erhalte ich die folgende Fehlermeldung: "Leider hat die Verbindung gestoppt". > Meine Hauptaktivität lautet: < /p>

Code: Select all

public class MainActivity extends AppCompatActivity implements View.OnClickListener {
private EditText editTextId;
private Button buttonGet;
private TextView textViewResult;

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

editTextId = (EditText)findViewById(R.id.editTextId);
buttonGet = (Button)findViewById(R.id.buttonGet);
textViewResult = (TextView)findViewById(R.id.textViewresult);

buttonGet.setOnClickListener(this);
}

private void getData(){
String id = editTextId.getText().toString().trim();
if(id.equals("")){
Toast.makeText(MainActivity.this, "Please enter an ID", Toast.LENGTH_SHORT).show();
return;
}
loading = ProgressDialog.show(this,"Please wait....","Fetching...",false,false);
String url = Config.DATA_URL+id;

StringRequest stringRequest = new StringRequest(url,new Response.Listener(){

@Override
public void onResponse(String response){
loading.dismiss();
showJSON(response);
}
},
new Response.ErrorListener(){
@Override
public void onErrorResponse(VolleyError error){
Toast.makeText(MainActivity.this, error.getMessage(), Toast.LENGTH_LONG).show();
}
});
RequestQueue requestQueue = Volley.newRequestQueue(this);
requestQueue.add(stringRequest);
}

private void showJSON(String response){
String name="";
String address="";
String director="";
try {
JSONObject jsonObject = new JSONObject(response);
JSONArray result = jsonObject.getJSONArray(Config.JSON_ARRAY);
JSONObject collegeData = result.getJSONObject(0);
name = collegeData.getString(Config.KEY_NAME);
address = collegeData.getString(Config.KEY_ADDRESS);
director = collegeData.getString(Config.KEY_DIRECTOR);
} catch (JSONException e){
e.printStackTrace();
}
textViewResult.setText("Name:\t"+name+"Address:\t"+address+"Director:\t"+director);
}
@Override
public void onClick(View v) {
getData();
}
}
< /code>
Die Konfigurationsdatei: < /p>
public class Config {
public static final String DATA_URL = "http://127.0.0.1/getDatanew.php?id=";
public static final String KEY_NAME = "name";
public static final String KEY_ADDRESS = "address";
public static final String KEY_DIRECTOR = "director";
public static final String JSON_ARRAY = "result";
}
< /code>
Die Datei dataconnect.php: < /p>

< /code>
Die Datei getData.php < /p>