Android çağrıldığını değil Spinner, onItemSelected (...)

Question

İşte kod:

import java.io.BufferedReader; 
import java.io.IOException; 
import java.io.InputStream; 
import java.io.InputStreamReader; 
import java.util.ArrayList; 
import java.util.List; 
import org.apache.http.HttpResponse; 
import org.apache.http.client.HttpClient; 
import org.apache.http.client.methods.HttpGet; 
import org.apache.http.impl.client.DefaultHttpClient; 
import org.apache.http.params.BasicHttpParams; 
import org.apache.http.params.HttpConnectionParams; 
import org.apache.http.params.HttpParams; 
import org.json.JSONArray; 
import org.json.JSONObject; 
import com.project.locationapp.model.Device; 
import android.os.AsyncTask; 
import android.os.Bundle; 
import android.provider.Settings.Secure; 
import android.app.Activity; 
import android.content.Intent; 
import android.util.Log; 
import android.view.Menu; 
import android.view.View; 
import android.widget.AdapterView; 
import android.widget.AdapterView.OnItemSelectedListener; 
import android.widget.ArrayAdapter; 
import android.widget.Spinner; 


public class SelectDevice extends Activity implements OnItemSelectedListener { 

private Spinner deviceSpinner; 
private List<Device> deviceList; 
private ArrayAdapter<Device> deviceAdapter; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_select_device); 
    deviceList = new ArrayList<Device>(); 


    try { 
     deviceSpinner = (Spinner) findViewById(R.id.select_device_spinner); 
     deviceAdapter = new DeviceAdapter(this, android.R.layout.simple_spinner_dropdown_item, deviceList); 
     deviceSpinner.setAdapter(deviceAdapter); 
     deviceSpinner.setOnItemSelectedListener(this); 

     DataAsyncTask loadDevices = new DataAsyncTask(); 
     loadDevices.execute(new String[] { WebServiceURL.WEB_SERVICE + WebServiceURL.DEVICES + WebServiceURL.ALL }); 




    } catch (Exception e){ 
     Log.e(TAG, e.getLocalizedMessage(), e); 
    } 
} 

@Override 
public void onItemSelected(AdapterView<?> a, View v, int position, 
     long id) { 

    Log.d(TAG, "called!"); 
    Intent intent = new Intent(this, ViewTrips.class); 
    intent.putExtra("device_id", deviceAdapter.getItem(position).getId()); 
    startActivity(intent); 

} 
} 

DeviceAdapter sınıfı:

import java.util.List; 
import com.project.locationapp.model.Device; 
import android.content.Context; 
import android.widget.ArrayAdapter; 

public class DeviceAdapter extends ArrayAdapter<Device> { 

public DeviceAdapter(Context context, int textViewResourceId, 
     List<Device> objects) { 
    super(context, textViewResourceId, objects); 
} 
} 

Etkinlik düzeni xml: Ben

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:tools="http://schemas.android.com/tools" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
tools:context=".SelectDevice" > 


<TextView 
    android:id="@+id/instructions_device_select" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_centerHorizontal="true" 
    android:text="@string/select_device_instructions" 
    android:layout_marginTop="10dp" 
    android:layout_marginBottom="10dp" 
    android:layout_marginRight="15dp" 
    android:layout_marginLeft="15dp" /> 

<Button 
    android:id="@+id/start_service_button" 
    android:layout_below="@id/instructions_device_select" 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:onClick="thisDevice" 
    android:text="@string/this_device" 
    android:layout_marginTop="10dp" 
    android:layout_marginRight="40dp" 
    android:layout_marginLeft="40dp" /> 

<Spinner 
    android:id="@+id/select_device_spinner" 
    android:layout_below="@id/start_service_button" 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:prompt="@string/select_device" 
    android:layout_marginTop="20dp" 
    android:layout_marginLeft="5dp" 
    android:drawSelectorOnTop = "true" /> 

</RelativeLayout> 

Bu düzgün çalışıyor almak için bekliyorum, o zaman DeviceAdapter daha da özelleştirmek için gidiyorum. Activity implements OnItemSelectedListener

, tüm çağrılan değildir onItemSelected(...) dolayısıyla geçersiz kılma. LogCat'da hata yok. Spinner, Aktivitenin düzeninde (xml) tanımlanır ve iyi görüntülenir ve doldurulur. Bu düzeltmek için herhangi bir tavsiye büyük olurdu.

Teşekkür ederiz.

Answer 1

Ben size adaptörü için bir açılır görünümünü ayarlamak vermedi görebilirsiniz spinner düzenleri olabilir. böyle senin spinner başlatmak için deneyebilir misiniz:

deviceAdapter = new DeviceAdapter(this, android.R.layout.simple_spinner_item, deviceList); 
deviceSpinner.setAdapter(deviceAdapter); 
deviceSpinner.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
deviceSpinner.setOnItemSelectedListener(this);