Null-Zeiger-Fehler in jsonObjectRequest

Question

WeatherActivity.java

package com.android.braudy.androidnetworking; 

import android.content.Intent; 
import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.View; 
import android.widget.TextView; 
import android.widget.Toast; 

import com.android.volley.Request; 
import com.android.volley.RequestQueue; 
import com.android.volley.Response; 
import com.android.volley.VolleyError; 
import com.android.volley.VolleyLog; 
import com.android.volley.toolbox.JsonObjectRequest; 
import com.android.volley.toolbox.Volley; 

import org.json.JSONArray; 
import org.json.JSONException; 
import org.json.JSONObject; 

public class WeatherActivity extends AppCompatActivity { 

    String WEATHER_API_URL = "api.openweathermap.org/data/2.5/weather"; 
    String API_KEY = "a66c89f35234cce834acd976903d4fbe"; 


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


     RequestQueue requestQueue = Volley.newRequestQueue(WeatherActivity.this); 

     JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.GET, getRequestURL(), null 
      ,new Response.Listener<JSONObject>() { 
       @Override 
       public void onResponse(JSONObject response) { 
        Toast.makeText(WeatherActivity.this,response.toString(),Toast.LENGTH_LONG).show(); 
       } 
      } 
      ,new Response.ErrorListener() { 
      @Override 
      public void onErrorResponse(VolleyError error) { 

      } 
     }); 

     requestQueue.add(jsonObjectRequest); 


    } 

    public String getRequestURL(){ 
     return WEATHER_API_URL+"?q=Iligan&APPID="+API_KEY; 
    } 

, wo ich hier falsch ging? Ich bin ein Fehler in der Leitung bekommen, wo ich die Anfrage initialisiert ..

java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.String.hashCode()' on a null object reference 

ist die komplette Fehlerprotokoll ..

06-07 22:17:06.876 17583-17628/com.android.braudy.androidnetworking E/Surface: getSlotFromBufferLocked: unknown buffer: 0xb4055d40 
06-07 22:17:06.909 17583-17583/com.android.braudy.androidnetworking E/AndroidRuntime: FATAL EXCEPTION: main 
                         Process: com.android.braudy.androidnetworking, PID: 17583 
                         java.lang.RuntimeException: Unable to start activity ComponentInfo{com.android.braudy.androidnetworking/com.android.braudy.androidnetworking.WeatherActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.String.hashCode()' on a null object reference 
                          at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416) 
                          at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476) 
                          at android.app.ActivityThread.-wrap11(ActivityThread.java) 
                          at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344) 
                          at android.os.Handler.dispatchMessage(Handler.java:102) 
                          at android.os.Looper.loop(Looper.java:148) 
                          at android.app.ActivityThread.main(ActivityThread.java:5417) 
                          at java.lang.reflect.Method.invoke(Native Method) 
                          at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
                          at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 
                         Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.String.hashCode()' on a null object reference 
                          at com.android.volley.Request.<init>(Request.java:136) 
                          at com.android.volley.toolbox.JsonRequest.<init>(JsonRequest.java:58) 
                          at com.android.volley.toolbox.JsonObjectRequest.<init>(JsonObjectRequest.java:47) 
                          at com.android.braudy.androidnetworking.WeatherActivity.onCreate(WeatherActivity.java:45) 
                          at android.app.Activity.performCreate(Activity.java:6237) 
                          at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107) 
                          at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369) 
                          at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)  
                          at android.app.ActivityThread.-wrap11(ActivityThread.java)  
                          at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)  
                          at android.os.Handler.dispatchMessage(Handler.java:102)  
                          at android.os.Looper.loop(Looper.java:148)  
                          at android.app.ActivityThread.main(ActivityThread.java:5417)  
                          at java.lang.reflect.Method.invoke(Native Method)  
                          at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)  
                          at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)  

Answer 1

ich die Lösung gefunden, habe ich vergessen „http hinzufügen: // "zu meiner URL ..