fix bug

.idea/misc.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
+  <component name="NullableNotNullManager">
+    <option name="myDefaultNullable" value="android.support.annotation.Nullable" />
+    <option name="myDefaultNotNull" value="android.support.annotation.NonNull" />
+    <option name="myNullables">
+      <value>
+        <list size="7">
+          <item index="0" class="java.lang.String" itemvalue="org.jetbrains.annotations.Nullable" />
+          <item index="1" class="java.lang.String" itemvalue="javax.annotation.Nullable" />
+          <item index="2" class="java.lang.String" itemvalue="javax.annotation.CheckForNull" />
+          <item index="3" class="java.lang.String" itemvalue="edu.umd.cs.findbugs.annotations.Nullable" />
+          <item index="4" class="java.lang.String" itemvalue="android.support.annotation.Nullable" />
+          <item index="5" class="java.lang.String" itemvalue="androidx.annotation.Nullable" />
+          <item index="6" class="java.lang.String" itemvalue="androidx.annotation.RecentlyNullable" />
+        </list>
+      </value>
+    </option>
+    <option name="myNotNulls">
+      <value>
+        <list size="6">
+          <item index="0" class="java.lang.String" itemvalue="org.jetbrains.annotations.NotNull" />
+          <item index="1" class="java.lang.String" itemvalue="javax.annotation.Nonnull" />
+          <item index="2" class="java.lang.String" itemvalue="edu.umd.cs.findbugs.annotations.NonNull" />
+          <item index="3" class="java.lang.String" itemvalue="android.support.annotation.NonNull" />
+          <item index="4" class="java.lang.String" itemvalue="androidx.annotation.NonNull" />
+          <item index="5" class="java.lang.String" itemvalue="androidx.annotation.RecentlyNonNull" />
+        </list>
+      </value>
+    </option>
+  </component>
   <component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" project-jdk-name="1.8" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>

app/build.gradle

@@ -7,7 +7,7 @@ android {
         minSdkVersion 14
         targetSdkVersion 27
         versionCode 1
-        versionName "1.9.3"
+        versionName "1.9.4"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
     }
     buildTypes {

app/release/output.json

-[{"outputType":{"type":"APK"},"apkInfo":{"type":"MAIN","splits":[],"versionCode":1,"versionName":"1.9.3","enabled":true,"outputFile":"app-release.apk","fullName":"release","baseName":"release"},"path":"app-release.apk","properties":{}}]
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+[{"outputType":{"type":"APK"},"apkInfo":{"type":"MAIN","splits":[],"versionCode":1,"versionName":"1.9.4","enabled":true,"outputFile":"app-release.apk","fullName":"release","baseName":"release"},"path":"app-release.apk","properties":{}}]
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app/src/main/java/com/example/mockgps/PageFragment2.java

@@ -28,7 +28,8 @@ public class PageFragment2 extends Fragment {
 
     public static final String ARG_PAGE = "ARG_PAGE";
     private int mPage;
-
+    public static TextView noOfflineMap;
+    public static ListView localMapListView;
 //    private MKOfflineMap mOffline = null;
 
     public static ArrayList<MKOLUpdateElement> localMapList = null;
@@ -64,9 +65,18 @@ public class PageFragment2 extends Fragment {
             localMapList = new ArrayList<MKOLUpdateElement>();
         }
         //init list view
-        ListView localMapListView = (ListView) view.findViewById(R.id.localmaplist);
+        localMapListView = (ListView) view.findViewById(R.id.localmaplist);
+        noOfflineMap=(TextView)view.findViewById(R.id.no_offline_map);
         lAdapter = new LocalMapAdapter();
         localMapListView.setAdapter(lAdapter);
+        //
+        if (localMapList.size()!=0){
+            localMapListView.setVisibility(View.VISIBLE);
+            noOfflineMap.setVisibility(View.GONE);
+        }else{
+            localMapListView.setVisibility(View.GONE);
+            noOfflineMap.setVisibility(View.VISIBLE);
+        }
         return view;
     }
 
@@ -75,6 +85,14 @@ public class PageFragment2 extends Fragment {
         if (localMapList == null) {
             localMapList = new ArrayList<MKOLUpdateElement>();
         }
+        //
+        if (localMapList.size()!=0){
+            localMapListView.setVisibility(View.VISIBLE);
+            noOfflineMap.setVisibility(View.GONE);
+        }else{
+            localMapListView.setVisibility(View.GONE);
+            noOfflineMap.setVisibility(View.VISIBLE);
+        }
         lAdapter.notifyDataSetChanged();
     }
 

app/src/main/res/layout/fragment_page_2.xml

@@ -14,6 +14,19 @@
     <ListView
         android:id="@+id/localmaplist"
         android:layout_width="match_parent"
-        android:layout_height="wrap_content" />
+        android:layout_height="wrap_content"
+        android:visibility="gone"
+        />
+
+    <TextView
+        android:id="@+id/no_offline_map"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center"
+        android:layout_marginTop="100dp"
+        android:textSize="25dp"
+        android:textColor="@color/half_black"
+        android:visibility="gone"
+        android:text="暂无离线地图"/>
 
 </LinearLayout>
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