when token updated

app/src/main/java/kr/susemi99/gcm/services/InstanceIDUpdateListenerService.java

@@ -0,0 +1,24 @@
+package kr.susemi99.gcm.services;
+
+import android.content.Intent;
+
+import com.google.android.gms.iid.InstanceIDListenerService;
+
+/**
+ * Created by susemi99 on 2016. 1. 26..
+ */
+public class InstanceIDUpdateListenerService extends InstanceIDListenerService
+{
+  /**
+   * Called if InstanceID token is updated. This may occur if the security of
+   * the previous token had been compromised. This call is initiated by the
+   * InstanceID provider.
+   */
+  @Override
+  public void onTokenRefresh()
+  {
+    super.onTokenRefresh();
+    Intent intent = new Intent(this, RegistrationIntentService.class);
+    startService(intent);
+  }
+}