remove device fresh icon

app/src/main/java/com/example/zxa01/iotclient/common/singleton/DefaultData.java

@@ -2,14 +2,10 @@ package com.example.zxa01.iotclient.common.singleton;
 
 import com.example.zxa01.iotclient.common.pojo.auth.LoginMessage;
 
-import java.util.LinkedList;
-import java.util.List;
-
 public class DefaultData {
 
     private static DefaultData defaultData = new DefaultData();
     private LoginMessage loginMessage;
-    private List<String> devices = new LinkedList<>();
     public String address = "http://192.168.2.90";
     public String gatewayPort= "8080";
     public String cloudPort = "8081";
@@ -26,8 +22,4 @@ public class DefaultData {
         return loginMessage;
     }
 
-    public List<String> getDevices(){
-        return devices;
-    }
-
 }

app/src/main/java/com/example/zxa01/iotclient/component/home/device/DeviceFragment.java

@@ -35,7 +35,6 @@ public class DeviceFragment extends Fragment {
         viewModel = new DeviceViewModel(binding.getRoot().getContext());
         binding.setViewModel(viewModel);
         binding.fab.setOnClickListener(item -> drawDialog());
-        binding.fabRefresh.setOnClickListener(item ->  viewModel.readDevices());
         binding.deviceRecyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
         deviceBindFragment = new DeviceBindFragment();
     }

app/src/main/res/layout/fragment_device.xml

@@ -38,17 +38,6 @@
             android:theme="@style/ProgressTheme"
             android:visibility="@{viewModel.isLoading ? View.VISIBLE : View.GONE}" />
 
-        <android.support.design.widget.FloatingActionButton
-            android:id="@+id/fab_refresh"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_gravity="bottom|end"
-            android:layout_marginLeft="@dimen/margin"
-            android:layout_marginRight="@dimen/margin"
-            android:layout_marginBottom="90dp"
-            android:src="@drawable/ic_refresh_black_24dp"
-            app:backgroundTint="@color/colorWhite" />
-
         <android.support.design.widget.FloatingActionButton
             android:id="@+id/fab"
             android:layout_width="wrap_content"