Contact subscription request crash fixed.

app/src/main/java/com/xabber/android/ui/ContactSubscription.java

@@ -17,6 +17,7 @@ package com.xabber.android.ui;
 import android.content.Context;
 import android.content.Intent;
 import android.os.Bundle;
+import android.support.v4.app.NavUtils;
 import android.support.v7.widget.Toolbar;
 import android.view.View;
 import android.widget.Button;
@@ -35,7 +36,7 @@ import com.xabber.android.ui.helper.AccountPainter;
 import com.xabber.android.ui.helper.BarPainter;
 import com.xabber.android.ui.helper.SingleActivity;
 
-public class ContactSubscription extends SingleActivity implements View.OnClickListener {
+public class ContactSubscription extends SingleActivity implements View.OnClickListener, ContactVcardViewerFragment.Listener {
 
     private String account;
     private String user;
@@ -71,10 +72,14 @@ public class ContactSubscription extends SingleActivity implements View.OnClickL
 
         setContentView(R.layout.contact_subscription);
         Toolbar toolbar = (Toolbar) findViewById(R.id.top_toolbar);
-
-        setSupportActionBar(toolbar);
-        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
         toolbar.setTitle(getString(R.string.subscription_request_message));
+        toolbar.setNavigationIcon(R.drawable.ic_clear_white_24dp);
+        toolbar.setNavigationOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                finish();
+            }
+        });
 
         BarPainter barPainter = new BarPainter(this, toolbar);
         barPainter.updateWithAccountName(account);
@@ -142,4 +147,8 @@ public class ContactSubscription extends SingleActivity implements View.OnClickL
         finish();
     }
 
+    @Override
+    public void onVCardReceived() {
+
+    }
 }