Say hello to Android Services

This changeset enables running a QCoreApplication from within an Android
Service. The Android Application running can now have a QtActivity or a
QtService, but having both in the same process is not supported.

This patch was based on Cory Slep's patch

[ChangeLog][Android] Qt can now be used to easily create Android Services.

Task-number: QTBUG-37221
Change-Id: I0fd693daaa85b991940ffe9cc41c483022677199
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@theqtcompany.com>

5 files changed, 279 insertions, 36 deletions

diff --git a/src/android/jar/jar.pri b/src/android/jar/jar.pri
index b45b353f95..58caacb837 100644
--- a/src/android/jar/jar.pri
+++ b/src/android/jar/jar.pri
@@ -16,7 +16,8 @@ JAVASOURCES += \
     $$PATHPREFIX/QtNative.java \
     $$PATHPREFIX/QtNativeLibrariesDir.java \
     $$PATHPREFIX/QtSurface.java \
-    $$PATHPREFIX/ExtractStyle.java
+    $$PATHPREFIX/ExtractStyle.java \
+    $$PATHPREFIX/QtServiceDelegate.java
 
 # install
 target.path = $$[QT_INSTALL_PREFIX]/jar
diff --git a/src/android/jar/src/org/qtproject/qt5/android/QtActivityDelegate.java b/src/android/jar/src/org/qtproject/qt5/android/QtActivityDelegate.java
index 985661bf3c..c434cc24b3 100644
--- a/src/android/jar/src/org/qtproject/qt5/android/QtActivityDelegate.java
+++ b/src/android/jar/src/org/qtproject/qt5/android/QtActivityDelegate.java
@@ -953,6 +953,7 @@ public class QtActivityDelegate
     {
         if (m_quitApp) {
             QtNative.terminateQt();
+            QtNative.setActivity(null, null);
             if (m_debuggerProcess != null)
                 m_debuggerProcess.destroy();
             System.exit(0);// FIXME remove it or find a better way
diff --git a/src/android/jar/src/org/qtproject/qt5/android/QtNative.java b/src/android/jar/src/org/qtproject/qt5/android/QtNative.java
index d9be4c7d9f..5d4f6e791a 100644
--- a/src/android/jar/src/org/qtproject/qt5/android/QtNative.java
+++ b/src/android/jar/src/org/qtproject/qt5/android/QtNative.java
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2014 BogDan Vatra <bogdan@kde.org>
+** Copyright (C) 2016 BogDan Vatra <bogdan@kde.org>
 ** Copyright (C) 2016 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
@@ -45,6 +45,7 @@ import java.util.ArrayList;
 import java.util.concurrent.Semaphore;
 
 import android.app.Activity;
+import android.app.Service;
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.PackageManager;
@@ -72,7 +73,9 @@ public class QtNative
 {
     private static Activity m_activity = null;
     private static boolean m_activityPaused = false;
+    private static Service m_service = null;
     private static QtActivityDelegate m_activityDelegate = null;
+    private static QtServiceDelegate m_serviceDelegate = null;
     public static Object m_mainActivityMutex = new Object(); // mutex used to synchronize runnable operations
 
     public static final String QtTAG = "Qt JAVA"; // string used for Log.x
@@ -115,6 +118,14 @@ public class QtNative
         }
     }
 
+    public static Service service()
+    {
+        synchronized (m_mainActivityMutex) {
+            return m_service;
+        }
+    }
+
+
     public static QtActivityDelegate activityDelegate()
     {
         synchronized (m_mainActivityMutex) {
@@ -122,6 +133,13 @@ public class QtNative
         }
     }
 
+    public static QtServiceDelegate serviceDelegate()
+    {
+        synchronized (m_mainActivityMutex) {
+            return m_serviceDelegate;
+        }
+    }
+
     public static boolean openURL(String url, String mime)
     {
         boolean ok = true;
@@ -186,6 +204,14 @@ public class QtNative
         }
     }
 
+    public static void setService(Service qtMainService, QtServiceDelegate qtServiceDelegate)
+    {
+        synchronized (m_mainActivityMutex) {
+            m_service = qtMainService;
+            m_serviceDelegate = qtServiceDelegate;
+        }
+    }
+
     public static void setApplicationState(int state)
     {
         synchronized (m_mainActivityMutex) {
@@ -319,7 +345,11 @@ public class QtNative
         runAction(new Runnable() {
             @Override
             public void run() {
-                m_activity.finish();
+                quitQtAndroidPlugin();
+                if (m_activity != null)
+                     m_activity.finish();
+                 if (m_service != null)
+                     m_service.stopSelf();
             }
         });
     }
@@ -452,7 +482,8 @@ public class QtNative
         runAction(new Runnable() {
             @Override
             public void run() {
-                m_activityDelegate.updateSelection(selStart, selEnd, candidatesStart, candidatesEnd);
+                if (m_activityDelegate != null)
+                    m_activityDelegate.updateSelection(selStart, selEnd, candidatesStart, candidatesEnd);
             }
         });
     }
@@ -467,7 +498,8 @@ public class QtNative
         runAction(new Runnable() {
             @Override
             public void run() {
-                m_activityDelegate.showSoftwareKeyboard(x, y, width, height, inputHints, enterKeyType);
+                if (m_activityDelegate != null)
+                    m_activityDelegate.showSoftwareKeyboard(x, y, width, height, inputHints, enterKeyType);
             }
         });
     }
@@ -477,7 +509,8 @@ public class QtNative
         runAction(new Runnable() {
             @Override
             public void run() {
-                m_activityDelegate.resetSoftwareKeyboard();
+                if (m_activityDelegate != null)
+                    m_activityDelegate.resetSoftwareKeyboard();
             }
         });
     }
@@ -487,7 +520,8 @@ public class QtNative
         runAction(new Runnable() {
             @Override
             public void run() {
-                m_activityDelegate.hideSoftwareKeyboard();
+                if (m_activityDelegate != null)
+                    m_activityDelegate.hideSoftwareKeyboard();
             }
         });
     }
@@ -497,7 +531,9 @@ public class QtNative
         runAction(new Runnable() {
             @Override
             public void run() {
-                m_activityDelegate.setFullScreen(fullScreen);
+                if (m_activityDelegate != null) {
+                    m_activityDelegate.setFullScreen(fullScreen);
+                }
                 updateWindow();
             }
         });
@@ -505,34 +541,44 @@ public class QtNative
 
     private static void registerClipboardManager()
     {
-        final Semaphore semaphore = new Semaphore(0);
-        runAction(new Runnable() {
-            @Override
-            public void run() {
-                m_clipboardManager = (android.text.ClipboardManager) m_activity.getSystemService(Context.CLIPBOARD_SERVICE);
-                semaphore.release();
+        if (m_service == null || m_activity != null) { // Avoid freezing if only service
+            final Semaphore semaphore = new Semaphore(0);
+            runAction(new Runnable() {
+                @Override
+                public void run() {
+                    if (m_activity != null)
+                        m_clipboardManager = (android.text.ClipboardManager) m_activity.getSystemService(Context.CLIPBOARD_SERVICE);
+                    semaphore.release();
+                }
+            });
+            try {
+                semaphore.acquire();
+            } catch (Exception e) {
+                e.printStackTrace();
             }
-        });
-        try {
-            semaphore.acquire();
-        } catch (Exception e) {
-            e.printStackTrace();
         }
     }
 
     private static void setClipboardText(String text)
     {
-        m_clipboardManager.setText(text);
+        if (m_clipboardManager != null)
+            m_clipboardManager.setText(text);
     }
 
     private static boolean hasClipboardText()
     {
-        return m_clipboardManager.hasText();
+        if (m_clipboardManager != null)
+            return m_clipboardManager.hasText();
+        else
+            return false;
     }
 
     private static String getClipboardText()
     {
-        return m_clipboardManager.getText().toString();
+        if (m_clipboardManager != null)
+            return m_clipboardManager.getText().toString();
+        else
+            return "";
     }
 
     private static void openContextMenu(final int x, final int y, final int w, final int h)
@@ -540,7 +586,8 @@ public class QtNative
         runAction(new Runnable() {
             @Override
             public void run() {
-                m_activityDelegate.openContextMenu(x, y, w, h);
+                if (m_activityDelegate != null)
+                    m_activityDelegate.openContextMenu(x, y, w, h);
             }
         });
     }
@@ -550,7 +597,8 @@ public class QtNative
         runAction(new Runnable() {
             @Override
             public void run() {
-                m_activityDelegate.closeContextMenu();
+                if (m_activityDelegate != null)
+                    m_activityDelegate.closeContextMenu();
             }
         });
     }
@@ -560,7 +608,8 @@ public class QtNative
         runAction(new Runnable() {
             @Override
             public void run() {
-                m_activityDelegate.resetOptionsMenu();
+                if (m_activityDelegate != null)
+                    m_activityDelegate.resetOptionsMenu();
             }
         });
     }
@@ -570,7 +619,8 @@ public class QtNative
         runAction(new Runnable() {
             @Override
             public void run() {
-                m_activity.openOptionsMenu();
+                if (m_activity != null)
+                    m_activity.openOptionsMenu();
             }
         });
     }
@@ -607,7 +657,8 @@ public class QtNative
         runAction(new Runnable() {
             @Override
             public void run() {
-                m_activityDelegate.createSurface(id, onTop, x, y, w, h, imageDepth);
+                if (m_activityDelegate != null)
+                    m_activityDelegate.createSurface(id, onTop, x, y, w, h, imageDepth);
             }
         });
     }
@@ -617,7 +668,8 @@ public class QtNative
         runAction(new Runnable() {
             @Override
             public void run() {
-                m_activityDelegate.insertNativeView(id, view, x, y, w, h);
+                if (m_activityDelegate != null)
+                    m_activityDelegate.insertNativeView(id, view, x, y, w, h);
             }
         });
     }
@@ -627,7 +679,8 @@ public class QtNative
         runAction(new Runnable() {
             @Override
             public void run() {
-                m_activityDelegate.setSurfaceGeometry(id, x, y, w, h);
+                if (m_activityDelegate != null)
+                    m_activityDelegate.setSurfaceGeometry(id, x, y, w, h);
             }
         });
     }
@@ -637,7 +690,8 @@ public class QtNative
         runAction(new Runnable() {
             @Override
             public void run() {
-                m_activityDelegate.bringChildToFront(id);
+                if (m_activityDelegate != null)
+                    m_activityDelegate.bringChildToFront(id);
             }
         });
     }
@@ -647,7 +701,8 @@ public class QtNative
         runAction(new Runnable() {
             @Override
             public void run() {
-                m_activityDelegate.bringChildToBack(id);
+                if (m_activityDelegate != null)
+                    m_activityDelegate.bringChildToBack(id);
             }
         });
     }
@@ -657,7 +712,8 @@ public class QtNative
         runAction(new Runnable() {
             @Override
             public void run() {
-                m_activityDelegate.destroySurface(id);
+                if (m_activityDelegate != null)
+                    m_activityDelegate.destroySurface(id);
             }
         });
     }
@@ -737,4 +793,7 @@ public class QtNative
     public static native void onNewIntent(Intent data);
 
     public static native void runPendingCppRunnables();
+
+    private static native void setNativeActivity(Activity activity);
+    private static native void setNativeService(Service service);
 }
diff --git a/src/android/jar/src/org/qtproject/qt5/android/QtNativeLibrariesDir.java b/src/android/jar/src/org/qtproject/qt5/android/QtNativeLibrariesDir.java
index 8481baec54..ff3bf19383 100644
--- a/src/android/jar/src/org/qtproject/qt5/android/QtNativeLibrariesDir.java
+++ b/src/android/jar/src/org/qtproject/qt5/android/QtNativeLibrariesDir.java
@@ -40,17 +40,17 @@
 
 package org.qtproject.qt5.android;
 
-import android.app.Activity;
+import android.content.Context;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageManager.NameNotFoundException;
 
 public class QtNativeLibrariesDir {
-    public static String nativeLibrariesDir(Activity activity)
+    public static String nativeLibrariesDir(Context context)
     {
         String m_nativeLibraryDir = null;
         try {
-            ApplicationInfo ai = activity.getPackageManager().getApplicationInfo(activity.getPackageName(), 0);
-            m_nativeLibraryDir = ai.nativeLibraryDir+"/";
+            ApplicationInfo ai = context.getPackageManager().getApplicationInfo(context.getPackageName(), 0);
+            m_nativeLibraryDir = ai.nativeLibraryDir + "/";
         } catch (NameNotFoundException e) {
             e.printStackTrace();
         }
diff --git a/src/android/jar/src/org/qtproject/qt5/android/QtServiceDelegate.java b/src/android/jar/src/org/qtproject/qt5/android/QtServiceDelegate.java
new file mode 100644
index 0000000000..634658eefb
--- /dev/null
+++ b/src/android/jar/src/org/qtproject/qt5/android/QtServiceDelegate.java
@@ -0,0 +1,182 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 BogDan Vatra <bogdan@kde.org>
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Android port of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+package org.qtproject.qt5.android;
+
+import android.app.Service;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.ActivityInfo;
+import android.content.pm.PackageManager;
+import android.content.pm.PackageManager.NameNotFoundException;
+import android.content.res.Configuration;
+import android.graphics.drawable.ColorDrawable;
+import android.net.LocalServerSocket;
+import android.net.LocalSocket;
+import android.os.Build;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.ResultReceiver;
+import android.text.method.MetaKeyKeyListener;
+import android.util.Base64;
+import android.util.DisplayMetrics;
+import android.util.Log;
+import android.util.TypedValue;
+import android.view.ContextMenu;
+import android.view.ContextMenu.ContextMenuInfo;
+import android.view.KeyCharacterMap;
+import android.view.KeyEvent;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.Surface;
+import android.view.View;
+import android.view.ViewConfiguration;
+import android.view.ViewGroup;
+import android.view.WindowManager;
+import android.view.inputmethod.InputMethodManager;
+
+import java.io.BufferedReader;
+import java.io.DataOutputStream;
+import java.io.File;
+import java.io.FileWriter;
+import java.io.InputStreamReader;
+import java.io.IOException;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.Method;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Iterator;
+
+public class QtServiceDelegate
+{
+    private static final String NATIVE_LIBRARIES_KEY = "native.libraries";
+    private static final String BUNDLED_LIBRARIES_KEY = "bundled.libraries";
+    private static final String MAIN_LIBRARY_KEY = "main.library";
+    private static final String ENVIRONMENT_VARIABLES_KEY = "environment.variables";
+    private static final String APPLICATION_PARAMETERS_KEY = "application.parameters";
+    private static final String STATIC_INIT_CLASSES_KEY = "static.init.classes";
+    private static final String APP_DISPLAY_METRIC_SCREEN_DESKTOP_KEY = "display.screen.desktop";
+    private static final String APP_DISPLAY_METRIC_SCREEN_XDPI_KEY = "display.screen.dpi.x";
+    private static final String APP_DISPLAY_METRIC_SCREEN_YDPI_KEY = "display.screen.dpi.y";
+    private static final String APP_DISPLAY_METRIC_SCREEN_DENSITY_KEY = "display.screen.density";
+
+    private Service m_service = null;
+    private String m_mainLib;
+    private static String m_environmentVariables = null;
+    private static String m_applicationParameters = null;
+
+    public boolean loadApplication(Service service, ClassLoader classLoader, Bundle loaderParams)
+    {
+        /// check parameters integrity
+        if (!loaderParams.containsKey(NATIVE_LIBRARIES_KEY)
+                || !loaderParams.containsKey(BUNDLED_LIBRARIES_KEY)) {
+            return false;
+        }
+
+        m_service = service;
+        QtNative.setService(m_service, this);
+        QtNative.setClassLoader(classLoader);
+
+        QtNative.setApplicationDisplayMetrics(10, 10, 10, 10, 120, 120, 1.0, 1.0);
+
+        if (loaderParams.containsKey(STATIC_INIT_CLASSES_KEY)) {
+            for (String className: loaderParams.getStringArray(STATIC_INIT_CLASSES_KEY)) {
+                if (className.length() == 0)
+                    continue;
+
+                try {
+                    Class<?> initClass = classLoader.loadClass(className);
+                    Object staticInitDataObject = initClass.newInstance(); // create an instance
+                    Method m = initClass.getMethod("setService", Service.class, Object.class);
+                    m.invoke(staticInitDataObject, m_service, this);
+                } catch (Exception e) {
+                    e.printStackTrace();
+                }
+            }
+        }
+        QtNative.loadQtLibraries(loaderParams.getStringArrayList(NATIVE_LIBRARIES_KEY));
+        ArrayList<String> libraries = loaderParams.getStringArrayList(BUNDLED_LIBRARIES_KEY);
+        QtNative.loadBundledLibraries(libraries, QtNativeLibrariesDir.nativeLibrariesDir(m_service));
+        m_mainLib = loaderParams.getString(MAIN_LIBRARY_KEY);
+
+        m_environmentVariables = loaderParams.getString(ENVIRONMENT_VARIABLES_KEY);
+        String additionalEnvironmentVariables = "QT_ANDROID_FONTS_MONOSPACE=Droid Sans Mono;Droid Sans;Droid Sans Fallback"
+                                              + "\tQT_ANDROID_FONTS_SERIF=Droid Serif"
+                                              + "\tHOME=" + m_service.getFilesDir().getAbsolutePath()
+                                              + "\tTMPDIR=" + m_service.getFilesDir().getAbsolutePath();
+        if (Build.VERSION.SDK_INT < 14)
+            additionalEnvironmentVariables += "\tQT_ANDROID_FONTS=Droid Sans;Droid Sans Fallback";
+        else
+            additionalEnvironmentVariables += "\tQT_ANDROID_FONTS=Roboto;Droid Sans;Droid Sans Fallback";
+
+        if (m_environmentVariables != null && m_environmentVariables.length() > 0)
+            m_environmentVariables = additionalEnvironmentVariables + "\t" + m_environmentVariables;
+        else
+            m_environmentVariables = additionalEnvironmentVariables;
+
+        if (loaderParams.containsKey(APPLICATION_PARAMETERS_KEY))
+            m_applicationParameters = loaderParams.getString(APPLICATION_PARAMETERS_KEY);
+        else
+            m_applicationParameters = "";
+
+        return true;
+    }
+
+    public boolean startApplication()
+    {
+        // start application
+        try {
+            String nativeLibraryDir = QtNativeLibrariesDir.nativeLibrariesDir(m_service);
+            QtNative.startApplication(m_applicationParameters,
+                    m_environmentVariables,
+                    m_mainLib,
+                    nativeLibraryDir);
+            return true;
+        } catch (Exception e) {
+            e.printStackTrace();
+            return false;
+        }
+    }
+
+    public void onDestroy()
+    {
+        QtNative.setService(null, null);
+    }
+}