Create the SystemUpdate activity class.

Test: tested sample app with sideloading.

Change-Id: I0d1661cea57c706b4981a4cda9f9b69fdeb69292

sample_updater/Android.mk

@@ -22,4 +22,6 @@ LOCAL_PACKAGE_NAME := SystemUpdateApp
 LOCAL_SDK_VERSION := system_current
 LOCAL_MODULE_TAGS := optional
 
+LOCAL_SRC_FILES := $(call all-java-files-under, src)
+
 include $(BUILD_PACKAGE)

sample_updater/AndroidManifest.xml

@@ -14,8 +14,18 @@
   limitations under the License.
   -->
 
-<manifest
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
-    package="com.android.update">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+          package="com.android.update">
+
+  <application android:label="Sample Updater">
+    <activity android:name=".ui.SystemUpdateActivity"
+              android:label="Sample Updater">
+      <intent-filter>
+        <action android:name="android.intent.action.MAIN" />
+        <category android:name="android.intent.category.LAUNCHER" />
+      </intent-filter>
+    </activity>
+  </application>
+
 </manifest>
+

sample_updater/res/layout/activity_main.xml

@@ -0,0 +1,20 @@
+<!--
+  Copyright (C) 2018 The Android Open Source Project
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+  -->
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+</LinearLayout>

sample_updater/src/com/android/update/ui/SystemUpdateActivity.java

@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.update.ui;
+
+import android.app.Activity;
+import android.os.UpdateEngine;
+import android.os.UpdateEngineCallback;
+
+/** Main update activity. */
+public class SystemUpdateActivity extends Activity {
+
+  private UpdateEngine updateEngine;
+  private UpdateEngineCallbackImpl updateEngineCallbackImpl = new UpdateEngineCallbackImpl(this);
+
+  @Override
+  public void onResume() {
+    super.onResume();
+    updateEngine = new UpdateEngine();
+    updateEngine.bind(updateEngineCallbackImpl);
+  }
+
+  @Override
+  public void onPause() {
+    updateEngine.unbind();
+    super.onPause();
+  }
+
+  void onStatusUpdate(int i, float v) {
+    // Handle update engine status update
+  }
+
+  void onPayloadApplicationComplete(int i) {
+    // Handle apply payload completion
+  }
+
+  private static class UpdateEngineCallbackImpl extends UpdateEngineCallback {
+
+    private final SystemUpdateActivity activity;
+
+    public UpdateEngineCallbackImpl(SystemUpdateActivity activity) {
+      this.activity = activity;
+    }
+
+    @Override
+    public void onStatusUpdate(int i, float v) {
+      activity.onStatusUpdate(i, v);
+    }
+
+    @Override
+    public void onPayloadApplicationComplete(int i) {
+      activity.onPayloadApplicationComplete(i);
+    }
+  }
+}