Add an exported flag in manifest

With b/150232615, we will need an explicit value set for the exported
flag when intent filters are present, as the default behavior is
changing for S+. This change adds the value reflecting the previous
default to the manifest.

These changes were made using an automated tool, the xml file may be
reformatted slightly creating a larger diff. The only "real" change is
the addition of "android:exported" to activities, services, and
receivers that have one or more intent-filters.

Bug: 150232615
Test: TH
Exempt-From-Owner-Approval: mechanical refactoring
Change-Id: I4457ff2bd466a4c56fed2570e110f251031c2385
diff --git a/samples/training/network-usage/AndroidManifest.xml b/samples/training/network-usage/AndroidManifest.xml
index 4b96d14..3cd4651 100644
--- a/samples/training/network-usage/AndroidManifest.xml
+++ b/samples/training/network-usage/AndroidManifest.xml
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
 <!--
   Copyright (C) 2012 The Android Open Source Project
 
@@ -15,33 +16,34 @@
   -->
 
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.example.android.networkusage"
-    android:versionCode="1"
-    android:versionName="1.0" >
+     package="com.example.android.networkusage"
+     android:versionCode="1"
+     android:versionName="1.0">
 
     <uses-sdk android:minSdkVersion="4"
-        android:targetSdkVersion="14" />
+         android:targetSdkVersion="14"/>
 
-    <uses-permission android:name="android.permission.INTERNET" />
-    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.INTERNET"/>
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
 
-    <application
-        android:icon="@drawable/ic_launcher"
-        android:label="@string/app_name" >
+    <application android:icon="@drawable/ic_launcher"
+         android:label="@string/app_name">
 
-        <activity
-            android:name="com.example.networkusage.NetworkActivity"
-            android:label="@string/app_name" >
+        <activity android:name="com.example.networkusage.NetworkActivity"
+             android:label="@string/app_name"
+             android:exported="true">
             <intent-filter>
-                <action android:name="android.intent.action.MAIN" />
+                <action android:name="android.intent.action.MAIN"/>
 
-                <category android:name="android.intent.category.LAUNCHER" />
+                <category android:name="android.intent.category.LAUNCHER"/>
             </intent-filter>
         </activity>
-        <activity android:label="SettingsActivity" android:name=".SettingsActivity">
+        <activity android:label="SettingsActivity"
+             android:name=".SettingsActivity"
+             android:exported="true">
              <intent-filter>
-                <action android:name="android.intent.action.MANAGE_NETWORK_USAGE" />
-                <category android:name="android.intent.category.DEFAULT" />
+                <action android:name="android.intent.action.MANAGE_NETWORK_USAGE"/>
+                <category android:name="android.intent.category.DEFAULT"/>
           </intent-filter>
         </activity>
     </application>