Android Retrofit "Attempt to invoke virtual method on a null object reference"
<p>Hi first of all i searched some similar questions like mine but unfortunately i couldn't find the similarity of my code to them so please here me out</p>

<p>I have a Main Activity Class </p>

<pre><code>public class MainActivity extends AppCompatActivity {

public ProgressDialog loading;
public String[] itemer;

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

    RetrofitHandler handler = new RetrofitHandler();
    handler.getContacts(MainActivity.this);
}

public void getter(String[] response, int size) {
    String[] itemer;
    itemer = new String[size];
    if (response != null) {
        itemer = response;
        Toast.makeText(MainActivity.this, itemer[0], Toast.LENGTH_SHORT).show();
    }
}
</code></pre>

<p>And a Handler for my result</p>

<pre><code>public class RetrofitHandler {
public String[] item;
public static final String ROOT_URL = "http://api.androidhive.info";
public List&lt;Contacts&gt; contacts;

// final MainActivity main = new MainActivity();
public void getContacts(final Context context) {
    final ProgressDialog loading = ProgressDialog.show(context, "Fetching Data", "Please wait...", false, false);

    RestAdapter adapter = new RestAdapter.Builder().setEndpoint(ROOT_URL).build();
    ContactsAPI api = adapter.create(ContactsAPI.class);

    api.getContacts(new Callback&lt;Contacts&gt;() {
        @Override
        public void success(Contacts contacts, Response response) {
            loading.dismiss();
            MainActivity update = new MainActivity();
            List&lt;Contact&gt; contactList = contacts.getContacts();

            item = new String[contactList.size()];
            int size = contactList.size();
            for (int i = 0; i &lt; contactList.size(); i++) {
                item[i] = contactList.get(i).getName();
            }
            update.getter(item, size);
        }

        @Override
        public void failure(RetrofitError error) {
            Toast.makeText(context, "Error Occured", Toast.LENGTH_LONG).show();
        }
    });


}
</code></pre>

<p>But I get an error on my response in the main activity here is my log</p>

<pre><code>              java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.res.Resources android.content.Context.getResources()' on a null object reference
                                                                         at android.content.ContextWrapper.getResources(ContextWrapper.java:87)
                                                                         at android.view.ContextThemeWrapper.getResources(ContextThemeWrapper.java:81)
                                                                         at android.support.v7.app.AppCompatActivity.getResources(AppCompatActivity.java:542)
                                                                         at android.widget.Toast.&lt;init&gt;(Toast.java:102)
                                                                         at android.widget.Toast.makeText(Toast.java:259)
                                                                         at com.exist.kelvs.retrofit2.MainActivity.getter(MainActivity.java:55)
                                                                         at com.exist.kelvs.retrofit2.RetrofitHandler$1.success(RetrofitHandler.java:41)
                                                                         at com.exist.kelvs.retrofit2.RetrofitHandler$1.success(RetrofitHandler.java:28)
                                                                         at retrofit.CallbackRunnable$1.run(CallbackRunnable.java:45)
                                                                         at android.os.Handler.handleCallback(Handler.java:739)
                                                                         at android.os.Handler.dispatchMessage(Handler.java:95)
                                                                         at android.os.Looper.loop(Looper.java:148)
                                                                         at android.app.ActivityThread.main(ActivityThread.java:5417)
                                                                         at java.lang.reflect.Method.invoke(Native Method)
                                                                         at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
                                                                         at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
</code></pre>

<p>I maked sure that the handler item where not null tested it with toast but when i pass it to getter it gives me the error where did i do wrong? :(</p>