添加初步联合定位功能

positions/src/main/res/layout/activity_main2.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout
+	xmlns:android="http://schemas.android.com/apk/res/android"
+	xmlns:app="http://schemas.android.com/apk/res-auto"
+	android:orientation="vertical"
+	android:layout_width="match_parent"
+	android:layout_height="match_parent"
+	android:background="#FFCAFECC">
+
+	<TextView
+		android:layout_width="wrap_content"
+		android:layout_height="wrap_content"
+		android:text="Text"
+		android:id="@+id/location_text_view"/>
+
+</LinearLayout>
+

positions/src/main/res/layout/fragment_positions.xml

@@ -1,14 +1,31 @@
 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    android:orientation="vertical"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent">
+	xmlns:android="http://schemas.android.com/apk/res/android"
+	xmlns:app="http://schemas.android.com/apk/res-auto"
+	android:orientation="vertical"
+	android:layout_width="match_parent"
+	android:layout_height="match_parent">
+
+	<LinearLayout
+		android:orientation="horizontal"
+		android:layout_width="match_parent"
+		android:layout_height="wrap_content"
+		android:gravity="center_vertical">
+
+		<TextView
+			android:layout_width="0dp"
+			android:layout_height="wrap_content"
+			android:text="fragment_positions"
+			android:layout_weight="1.0"
+			android:id="@+id/current_position_tv"/>
+
+		<Button
+			android:layout_width="wrap_content"
+			android:layout_height="wrap_content"
+			android:text="定位"
+			android:id="@+id/locking_position_btn"/>
+
+	</LinearLayout>
 
-    <TextView
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:text="fragment_positions"/>
-    
 </LinearLayout>
+

positions/src/main/res/menu/toolbar_main.xml

@@ -4,6 +4,9 @@
     <item
         android:id="@+id/item_testmapview"
         android:title="TestMapViewActivity"/>
+    <item
+        android:id="@+id/item_joint_positioning"
+        android:title="JointPositioningActivity"/>
     <item
         android:id="@+id/item_demomain"
         android:title="DemoMainActivity"/>