修改部分问题

live_teaching/src/main/res/layout/class_item_conversation_notify_message.xml

@@ -11,6 +11,6 @@
     android:paddingTop="6.5dp"
     android:paddingRight="10dp"
     android:paddingBottom="6.5dp"
-    android:textColor="@color/white"
+    android:textColor="@color/color_666666"
     android:textSize="12dp"
     tools:ignore="MissingDefaultResource" />

rong_im/kit/src/main/java/io/rong/imkit/conversation/RongConversationActivity.java

@@ -22,6 +22,7 @@ import io.rong.imkit.widget.TitleBar;
 import io.rong.imlib.model.Conversation;
 import io.rong.imlib.model.Group;
 import io.rong.imlib.model.UserInfo;
+
 //学生端消息交互界面
 public class RongConversationActivity extends RongBaseActivity {
     protected String mTargetId;
@@ -65,9 +66,12 @@ public class RongConversationActivity extends RongBaseActivity {
             mTitleBar.getRightImageView().setOnClickListener(new View.OnClickListener() {
                 @Override
                 public void onClick(View view) {
+                    if (group == null) {
+                        return;
+                    }
                     ARouter.getInstance().build(RouterPath.ChatCenter.CHAT_GROUP_SETTING)
-                            .withString("targetId",mTargetId)
-                            .withString("name",group.getName())
+                            .withString("targetId", mTargetId)
+                            .withString("name", group.getName())
                             .navigation();
                 }
             });