Android: Say hello to gradle!

Switching from Ant to Gradle brings lots of advantages:
 - it is way faster when rebuilding (25-50% faster than ant).
 - it enables first class Android Studio integration.
 - adding Android Extras libs (e.g. Google Play services, OBB, etc.) to
   your project is now painless.

[ChangeLog][Android] Added Gradle support to build the APK.

Change-Id: Iee492954f8ffb2c22e6ab14a8a25faf644de9a51
Reviewed-by: Daniel Teske <daniel.teske@digia.com>

17 files changed, 329 insertions, 50 deletions

diff --git a/src/plugins/android/android.pro b/src/plugins/android/android.pro
index f978d78918..b3514dc038 100644
--- a/src/plugins/android/android.pro
+++ b/src/plugins/android/android.pro
@@ -89,7 +89,8 @@ SOURCES += \
     javafilewizard.cpp \
     avddialog.cpp \
     androidbuildapkstep.cpp \
-    androidbuildapkwidget.cpp
+    androidbuildapkwidget.cpp \
+    androidqtsupport.cpp
 
 FORMS += \
     androidsettingswidget.ui \
diff --git a/src/plugins/android/android.qbs b/src/plugins/android/android.qbs
index 0574d80f63..914266b3af 100644
--- a/src/plugins/android/android.qbs
+++ b/src/plugins/android/android.qbs
@@ -67,6 +67,7 @@ QtcPlugin {
         "androidplugin.h",
         "androidpotentialkit.cpp",
         "androidpotentialkit.h",
+        "androidqtsupport.cpp",
         "androidqtsupport.h",
         "androidqtversion.cpp",
         "androidqtversion.h",
diff --git a/src/plugins/android/androidbuildapkstep.cpp b/src/plugins/android/androidbuildapkstep.cpp
index c1b6a4cfcf..fc9ce9eca9 100644
--- a/src/plugins/android/androidbuildapkstep.cpp
+++ b/src/plugins/android/androidbuildapkstep.cpp
@@ -59,18 +59,22 @@ const QLatin1String DeployActionKey("Qt4ProjectManager.AndroidDeployQtStep.Deplo
 const QLatin1String KeystoreLocationKey("KeystoreLocation");
 const QLatin1String BuildTargetSdkKey("BuildTargetSdk");
 const QLatin1String VerboseOutputKey("VerboseOutput");
+const QLatin1String UseGradleKey("UseGradle");
 
 AndroidBuildApkStep::AndroidBuildApkStep(ProjectExplorer::BuildStepList *parent, const Core::Id id)
     : ProjectExplorer::AbstractProcessStep(parent, id),
       m_deployAction(BundleLibrariesDeployment),
       m_signPackage(false),
       m_verbose(false),
+      m_useGradle(false),
       m_openPackageLocation(false),
       m_buildTargetSdk(AndroidConfig::apiLevelNameFor(AndroidConfigurations::currentConfig().highestAndroidSdk()))
 {
     const QtSupport::BaseQtVersion *version = QtSupport::QtKitInformation::qtVersion(target()->kit());
-    if (version && version->qtVersion() >=  QtSupport::QtVersionNumber(5, 4, 0))
+    if (version && version->qtVersion() >=  QtSupport::QtVersionNumber(5, 4, 0)) {
         m_deployAction = DebugDeployment;
+        m_useGradle = AndroidConfigurations::currentConfig().useGrandle();
+    }
     //: AndroidBuildApkStep default display name
     setDefaultDisplayName(tr("Build Android APK"));
 }
@@ -81,6 +85,7 @@ AndroidBuildApkStep::AndroidBuildApkStep(ProjectExplorer::BuildStepList *parent,
       m_deployAction(other->deployAction()),
       m_signPackage(other->signPackage()),
       m_verbose(other->m_verbose),
+      m_useGradle(other->m_useGradle),
       m_openPackageLocation(other->m_openPackageLocation),
       m_buildTargetSdk(other->m_buildTargetSdk)
 {
@@ -88,6 +93,8 @@ AndroidBuildApkStep::AndroidBuildApkStep(ProjectExplorer::BuildStepList *parent,
     if (version->qtVersion() <  QtSupport::QtVersionNumber(5, 4, 0)) {
         if (m_deployAction == DebugDeployment)
             m_deployAction = BundleLibrariesDeployment;
+        if (m_useGradle)
+            m_useGradle = false;
     }
 }
 
@@ -123,8 +130,7 @@ bool AndroidBuildApkStep::init()
     setOutputParser(parser);
 
     m_openPackageLocationForRun = m_openPackageLocation;
-    m_apkPath = AndroidManager::androidQtSupport(target())->apkPath(target(), m_signPackage ? AndroidQtSupport::ReleaseBuildSigned
-                                                                : AndroidQtSupport::DebugBuild).toString();
+    m_apkPath = AndroidManager::androidQtSupport(target())->apkPath(target()).toString();
 
     bool result = AbstractProcessStep::init();
     if (!result)
@@ -169,6 +175,7 @@ bool AndroidBuildApkStep::fromMap(const QVariantMap &map)
     if (m_buildTargetSdk.isEmpty())
         m_buildTargetSdk = AndroidConfig::apiLevelNameFor(AndroidConfigurations::currentConfig().highestAndroidSdk());
     m_verbose = map.value(VerboseOutputKey).toBool();
+    m_useGradle = map.value(UseGradleKey).toBool();
     return ProjectExplorer::BuildStep::fromMap(map);
 }
 
@@ -179,6 +186,7 @@ QVariantMap AndroidBuildApkStep::toMap() const
     map.insert(KeystoreLocationKey, m_keystorePath.toString());
     map.insert(BuildTargetSdkKey, m_buildTargetSdk);
     map.insert(VerboseOutputKey, m_verbose);
+    map.insert(UseGradleKey, m_useGradle);
     return map;
 }
 
@@ -195,6 +203,8 @@ QString AndroidBuildApkStep::buildTargetSdk() const
 void AndroidBuildApkStep::setBuildTargetSdk(const QString &sdk)
 {
     m_buildTargetSdk = sdk;
+    if (m_useGradle)
+        AndroidManager::updateGradleProperties(target());
 }
 
 AndroidBuildApkStep::AndroidDeployAction AndroidBuildApkStep::deployAction() const
@@ -254,6 +264,18 @@ void AndroidBuildApkStep::setVerboseOutput(bool verbose)
     m_verbose = verbose;
 }
 
+bool AndroidBuildApkStep::useGradle() const
+{
+    return m_useGradle;
+}
+
+void AndroidBuildApkStep::setUseGradle(bool b)
+{
+    m_useGradle = b;
+    if (m_useGradle)
+        AndroidManager::updateGradleProperties(target());
+}
+
 bool AndroidBuildApkStep::runInGuiThread() const
 {
     return true;
diff --git a/src/plugins/android/androidbuildapkstep.h b/src/plugins/android/androidbuildapkstep.h
index 668f5b4b7e..2d82b7b261 100644
--- a/src/plugins/android/androidbuildapkstep.h
+++ b/src/plugins/android/androidbuildapkstep.h
@@ -72,13 +72,19 @@ public:
 
     bool openPackageLocation() const;
     void setOpenPackageLocation(bool open);
+
     bool verboseOutput() const;
     void setVerboseOutput(bool verbose);
 
+    bool useGradle() const;
+    void setUseGradle(bool b);
+
     bool runInGuiThread() const;
 
     QString buildTargetSdk() const;
     void setBuildTargetSdk(const QString &sdk);
+
+    virtual Utils::FileName androidPackageSourceDir() const = 0;
 public slots:
     void setDeployAction(AndroidDeployAction deploy);
 
@@ -95,12 +101,12 @@ protected:
     ProjectExplorer::BuildStepConfigWidget *createConfigWidget();
     bool immutable() const { return true; }
     void processFinished(int exitCode, QProcess::ExitStatus status);
-    virtual Utils::FileName androidPackageSourceDir() const = 0;
 
 protected:
     AndroidDeployAction m_deployAction;
     bool m_signPackage;
     bool m_verbose;
+    bool m_useGradle;
     bool m_openPackageLocation;
     bool m_openPackageLocationForRun;
     QString m_buildTargetSdk;
diff --git a/src/plugins/android/androidbuildapkwidget.cpp b/src/plugins/android/androidbuildapkwidget.cpp
index 6bc769d7ca..ade9d09bb7 100644
--- a/src/plugins/android/androidbuildapkwidget.cpp
+++ b/src/plugins/android/androidbuildapkwidget.cpp
@@ -91,6 +91,7 @@ AndroidBuildApkWidget::AndroidBuildApkWidget(AndroidBuildApkStep *step)
     m_ui->signingDebugWarningLabel->hide();
     signPackageCheckBoxToggled(m_step->signPackage());
 
+    m_ui->useGradleCheckBox->setChecked(m_step->useGradle());
     m_ui->verboseOutputCheckBox->setChecked(m_step->verboseOutput());
     m_ui->openPackageLocationCheckBox->setChecked(m_step->openPackageLocation());
 
@@ -105,6 +106,8 @@ AndroidBuildApkWidget::AndroidBuildApkWidget(AndroidBuildApkStep *step)
     connect(m_ui->temporaryQtOption, SIGNAL(clicked()), SLOT(updateDebugDeploySigningWarning()));
     connect(m_ui->bundleQtOption, SIGNAL(clicked()), SLOT(updateDebugDeploySigningWarning()));
 
+    connect(m_ui->useGradleCheckBox, SIGNAL(toggled(bool)),
+            this, SLOT(useGradleCheckBoxToggled(bool)));
     connect(m_ui->openPackageLocationCheckBox, SIGNAL(toggled(bool)),
             this, SLOT(openPackageLocationCheckBoxToggled(bool)));
     connect(m_ui->verboseOutputCheckBox, SIGNAL(toggled(bool)),
@@ -128,7 +131,9 @@ AndroidBuildApkWidget::AndroidBuildApkWidget(AndroidBuildApkStep *step)
     updateSigningWarning();
     updateDebugDeploySigningWarning();
     QtSupport::BaseQtVersion *qt = QtSupport::QtKitInformation::qtVersion(step->target()->kit());
-    m_ui->temporaryQtOption->setVisible(qt->qtVersion() >= QtSupport::QtVersionNumber(5, 4, 0));
+    bool qt54 = qt->qtVersion() >= QtSupport::QtVersionNumber(5, 4, 0);
+    m_ui->temporaryQtOption->setVisible(qt54);
+    m_ui->useGradleCheckBox->setVisible(qt54);
 }
 
 AndroidBuildApkWidget::~AndroidBuildApkWidget()
@@ -254,3 +259,7 @@ void AndroidBuildApkWidget::updateDebugDeploySigningWarning()
     }
 }
 
+void AndroidBuildApkWidget::useGradleCheckBoxToggled(bool checked)
+{
+    m_step->setUseGradle(checked);
+}
diff --git a/src/plugins/android/androidbuildapkwidget.h b/src/plugins/android/androidbuildapkwidget.h
index 33215f171c..708c400883 100644
--- a/src/plugins/android/androidbuildapkwidget.h
+++ b/src/plugins/android/androidbuildapkwidget.h
@@ -64,6 +64,7 @@ private slots:
     void certificatesAliasComboBoxActivated(const QString &alias);
     void updateSigningWarning();
     void updateDebugDeploySigningWarning();
+    void useGradleCheckBoxToggled(bool checked);
     void openPackageLocationCheckBoxToggled(bool checked);
     void verboseOutputCheckBoxToggled(bool checked);
     void updateKeyStorePath(const QString &path);
diff --git a/src/plugins/android/androidbuildapkwidget.ui b/src/plugins/android/androidbuildapkwidget.ui
index bdcaca57c3..13d638b659 100644
--- a/src/plugins/android/androidbuildapkwidget.ui
+++ b/src/plugins/android/androidbuildapkwidget.ui
@@ -184,20 +184,27 @@
       <string>Advanced Actions</string>
      </property>
      <layout class="QGridLayout" name="gridLayout">
-      <item row="1" column="0">
+      <item row="2" column="0">
        <widget class="QCheckBox" name="verboseOutputCheckBox">
         <property name="text">
          <string>Verbose output</string>
         </property>
        </widget>
       </item>
-      <item row="0" column="0">
+      <item row="1" column="0">
        <widget class="QCheckBox" name="openPackageLocationCheckBox">
         <property name="text">
          <string>Open package location after build</string>
         </property>
        </widget>
       </item>
+      <item row="0" column="0">
+       <widget class="QCheckBox" name="useGradleCheckBox">
+        <property name="text">
+         <string>Use Gradle</string>
+        </property>
+       </widget>
+      </item>
      </layout>
     </widget>
    </item>
diff --git a/src/plugins/android/androidconfigurations.cpp b/src/plugins/android/androidconfigurations.cpp
index 0a2faf9e8b..76465f2452 100644
--- a/src/plugins/android/androidconfigurations.cpp
+++ b/src/plugins/android/androidconfigurations.cpp
@@ -84,6 +84,7 @@ namespace {
     const QLatin1String OpenJDKLocationKey("OpenJDKLocation");
     const QLatin1String KeystoreLocationKey("KeystoreLocation");
     const QLatin1String AutomaticKitCreationKey("AutomatiKitCreation");
+    const QLatin1String UseGradleKey("UseGradle");
     const QLatin1String MakeExtraSearchDirectory("MakeExtraSearchDirectory");
     const QLatin1String DefaultDevice("DefaultDevice");
     const QLatin1String PartitionSizeKey("PartitionSize");
@@ -181,6 +182,7 @@ void AndroidConfig::load(const QSettings &settings)
     m_sdkLocation = FileName::fromString(settings.value(SDKLocationKey).toString());
     m_ndkLocation = FileName::fromString(settings.value(NDKLocationKey).toString());
     m_antLocation = FileName::fromString(settings.value(AntLocationKey).toString());
+    m_useGradle = settings.value(UseGradleKey, true).toBool();
     m_openJDKLocation = FileName::fromString(settings.value(OpenJDKLocationKey).toString());
     m_keystoreLocation = FileName::fromString(settings.value(KeystoreLocationKey).toString());
     m_toolchainHost = settings.value(ToolchainHostKey).toString();
@@ -214,7 +216,8 @@ void AndroidConfig::load(const QSettings &settings)
 }
 
 AndroidConfig::AndroidConfig()
-    : m_availableSdkPlatformsUpToDate(false),
+    : m_useGradle(true),
+      m_availableSdkPlatformsUpToDate(false),
       m_NdkInformationUpToDate(false)
 {
 
@@ -230,6 +233,7 @@ void AndroidConfig::save(QSettings &settings) const
     settings.setValue(SDKLocationKey, m_sdkLocation.toString());
     settings.setValue(NDKLocationKey, m_ndkLocation.toString());
     settings.setValue(AntLocationKey, m_antLocation.toString());
+    settings.setValue(UseGradleKey, m_useGradle);
     settings.setValue(OpenJDKLocationKey, m_openJDKLocation.toString());
     settings.setValue(KeystoreLocationKey, m_keystoreLocation.toString());
     settings.setValue(PartitionSizeKey, m_partitionSize);
@@ -912,6 +916,16 @@ void AndroidConfig::setAutomaticKitCreation(bool b)
     m_automaticKitCreation = b;
 }
 
+bool AndroidConfig::useGrandle() const
+{
+    return m_useGradle;
+}
+
+void AndroidConfig::setUseGradle(bool b)
+{
+    m_useGradle = b;
+}
+
 ///////////////////////////////////
 // AndroidConfigurations
 ///////////////////////////////////
diff --git a/src/plugins/android/androidconfigurations.h b/src/plugins/android/androidconfigurations.h
index 025ca5dced..4914e37b14 100644
--- a/src/plugins/android/androidconfigurations.h
+++ b/src/plugins/android/androidconfigurations.h
@@ -115,6 +115,9 @@ public:
     bool automaticKitCreation() const;
     void setAutomaticKitCreation(bool b);
 
+    bool useGrandle() const;
+    void setUseGradle(bool b);
+
     Utils::FileName adbToolPath() const;
     Utils::FileName androidToolPath() const;
     Utils::Environment androidToolEnvironment() const;
@@ -179,6 +182,7 @@ private:
     QStringList m_makeExtraSearchDirectories;
     unsigned m_partitionSize;
     bool m_automaticKitCreation;
+    bool m_useGradle;
 
     //caches
     mutable bool m_availableSdkPlatformsUpToDate;
diff --git a/src/plugins/android/androiddeployqtstep.cpp b/src/plugins/android/androiddeployqtstep.cpp
index 333d3e02b5..6a180201b4 100644
--- a/src/plugins/android/androiddeployqtstep.cpp
+++ b/src/plugins/android/androiddeployqtstep.cpp
@@ -165,6 +165,8 @@ void AndroidDeployQtStep::ctor()
 
 bool AndroidDeployQtStep::init()
 {
+    m_androiddeployqtArgs.clear();
+
     if (AndroidManager::checkForQt51Files(project()->projectDirectory()))
         emit addOutput(tr("Found old folder \"android\" in source directory. Qt 5.2 does not use that folder by default."), ErrorOutput);
 
@@ -252,12 +254,12 @@ bool AndroidDeployQtStep::init()
                 Utils::QtcProcess::addArg(&m_androiddeployqtArgs, QLatin1String("bundled"));
                 break;
         }
+        if (androidBuildApkStep->useGradle())
+            Utils::QtcProcess::addArg(&m_androiddeployqtArgs, QLatin1String("--gradle"));
     } else {
         m_uninstallPreviousPackageRun = true;
         pp->setCommand(AndroidConfigurations::currentConfig().adbToolPath().toString());
-        m_apkPath = AndroidManager::androidQtSupport(target())->apkPath(target(), AndroidManager::signPackage(target())
-                                                                        ? AndroidQtSupport::ReleaseBuildSigned
-                                                                        : AndroidQtSupport::DebugBuild).toString();
+        m_apkPath = AndroidManager::androidQtSupport(target())->apkPath(target()).toString();
         pp->setWorkingDirectory(bc->buildDirectory().toString());
     }
     pp->setMacroExpander(bc->macroExpander());
diff --git a/src/plugins/android/androidmanager.cpp b/src/plugins/android/androidmanager.cpp
index 6419c6dca8..bace0759ea 100644
--- a/src/plugins/android/androidmanager.cpp
+++ b/src/plugins/android/androidmanager.cpp
@@ -595,4 +595,112 @@ AndroidQtSupport *AndroidManager::androidQtSupport(ProjectExplorer::Target *targ
     return 0;
 }
 
+bool AndroidManager::useGradle(ProjectExplorer::Target *target)
+{
+    if (!target)
+        return false;
+    AndroidBuildApkStep *buildApkStep
+        = AndroidGlobal::buildStep<AndroidBuildApkStep>(target->activeBuildConfiguration());
+    return buildApkStep && buildApkStep->useGradle();
+}
+
+typedef QMap<QByteArray, QByteArray> GradleProperties;
+
+static GradleProperties readGradleProperties(const QString &path)
+{
+    GradleProperties properties;
+    QFile file(path);
+    if (!file.open(QIODevice::ReadOnly))
+        return properties;
+
+    foreach (const QByteArray &line, file.readAll().split('\n')) {
+        if (line.trimmed().startsWith('#'))
+            continue;
+
+        QList<QByteArray> prop(line.split('='));
+        if (prop.size() > 1)
+            properties[prop.at(0).trimmed()] = prop.at(1).trimmed();
+    }
+    file.close();
+    return properties;
+}
+
+static bool mergeGradleProperties(const QString &path, GradleProperties properties)
+{
+    QFile::remove(path + QLatin1Char('~'));
+    QFile::rename(path, path + QLatin1Char('~'));
+    QFile file(path);
+    if (!file.open(QIODevice::Truncate | QIODevice::WriteOnly | QIODevice::Text))
+        return false;
+
+    QFile oldFile(path + QLatin1Char('~'));
+    if (oldFile.open(QIODevice::ReadOnly)) {
+        while (!oldFile.atEnd()) {
+            QByteArray line(oldFile.readLine());
+            QList<QByteArray> prop(line.split('='));
+            if (prop.size() > 1) {
+                GradleProperties::iterator it = properties.find(prop.at(0).trimmed());
+                if (it != properties.end()) {
+                    file.write(it.key() + '=' + it.value() + '\n');
+                    properties.erase(it);
+                    continue;
+                }
+            }
+            file.write(line);
+        }
+        oldFile.close();
+    } else {
+        file.write("## This file is automatically generated by QtCreator.\n"
+                   "#\n"
+                   "# This file must *NOT* be checked into Version Control Systems,\n"
+                   "# as it contains information specific to your local configuration.\n\n");
+
+    }
+
+    for (GradleProperties::const_iterator it = properties.begin(); it != properties.end(); ++it)
+        file.write(it.key() + '=' + it.value() + '\n');
+
+    file.close();
+    return true;
+}
+
+
+bool AndroidManager::updateGradleProperties(ProjectExplorer::Target *target)
+{
+    QtSupport::BaseQtVersion *version = QtSupport::QtKitInformation::qtVersion(target->kit());
+    if (!version)
+        return false;
+
+    AndroidBuildApkStep *buildApkStep
+        = AndroidGlobal::buildStep<AndroidBuildApkStep>(target->activeBuildConfiguration());
+
+    if (!buildApkStep || !buildApkStep->androidPackageSourceDir().appendPath(QLatin1String("gradlew")).toFileInfo().exists())
+        return false;
+
+    GradleProperties localProperties;
+    localProperties["sdk.dir"] = AndroidConfigurations::currentConfig().sdkLocation().toString().toLocal8Bit();
+    if (!mergeGradleProperties(buildApkStep->androidPackageSourceDir().appendPath(QLatin1String("local.properties")).toString(), localProperties))
+        return false;
+
+    QString gradlePropertiesPath = buildApkStep->androidPackageSourceDir().appendPath(QLatin1String("gradle.properties")).toString();
+    GradleProperties gradleProperties = readGradleProperties(gradlePropertiesPath);
+    gradleProperties["qt5AndroidDir"] = version->qmakeProperty("QT_INSTALL_PREFIX")
+            .append(QLatin1String("/src/android/java")).toLocal8Bit();
+    gradleProperties["buildDir"] = ".build";
+    gradleProperties["androidCompileSdkVersion"] = buildTargetSDK(target).split(QLatin1Char('-')).last().toLocal8Bit();
+    if (gradleProperties["androidBuildToolsVersion"].isEmpty()) {
+        QString maxVersion;
+        QDir buildToolsDir(AndroidConfigurations::currentConfig().sdkLocation().appendPath(QLatin1String("build-tools")).toString());
+        foreach (const QFileInfo &file, buildToolsDir.entryList(QDir::Dirs|QDir::NoDotAndDotDot)) {
+            QString ver(file.fileName());
+            if (maxVersion < ver)
+                maxVersion = ver;
+        }
+        if (maxVersion.isEmpty())
+            return false;
+        gradleProperties["androidBuildToolsVersion"] = maxVersion.toLocal8Bit();
+    }
+    return mergeGradleProperties(gradlePropertiesPath, gradleProperties);
+}
+
 } // namespace Android
diff --git a/src/plugins/android/androidmanager.h b/src/plugins/android/androidmanager.h
index a738555d2b..a7d36e77e0 100644
--- a/src/plugins/android/androidmanager.h
+++ b/src/plugins/android/androidmanager.h
@@ -96,6 +96,8 @@ public:
     static bool checkCertificatePassword(const QString &keystorePath, const QString &keystorePasswd, const QString &alias, const QString &certificatePasswd);
     static bool checkForQt51Files(Utils::FileName fileName);
     static AndroidQtSupport *androidQtSupport(ProjectExplorer::Target *target);
+    static bool useGradle(ProjectExplorer::Target *target);
+    static bool updateGradleProperties(ProjectExplorer::Target *target);
 };
 
 } // namespace Android
diff --git a/src/plugins/android/androidqtsupport.cpp b/src/plugins/android/androidqtsupport.cpp
new file mode 100644
index 0000000000..52c2360d44
--- /dev/null
+++ b/src/plugins/android/androidqtsupport.cpp
@@ -0,0 +1,67 @@
+/**************************************************************************
+**
+** Copyright (c) 2014 BogDan Vatra <bog_dan_ro@yahoo.com>
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of Qt Creator.
+**
+** 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 Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+****************************************************************************/
+
+#include "androidbuildapkstep.h"
+#include "androidconstants.h"
+#include "androidglobal.h"
+#include "androidqtsupport.h"
+
+#include <projectexplorer/target.h>
+
+Utils::FileName Android::AndroidQtSupport::apkPath(ProjectExplorer::Target *target) const
+{
+    if (!target)
+        return Utils::FileName();
+
+    AndroidBuildApkStep *buildApkStep
+        = Android::AndroidGlobal::buildStep<AndroidBuildApkStep>(target->activeBuildConfiguration());
+
+    if (!buildApkStep)
+        return Utils::FileName();
+
+    QString apkPath;
+    if (buildApkStep->useGradle())
+        apkPath = QLatin1String("/build/outputs/apk/android-build-");
+    else
+        apkPath = QLatin1String("/bin/QtApp-");
+    if (buildApkStep->buildConfiguration()->buildType() == ProjectExplorer::BuildConfiguration::Release) {
+        apkPath += QLatin1String("release-");
+        if (!buildApkStep->signPackage())
+            apkPath += QLatin1String("un");
+        apkPath += QLatin1String("signed.apk");
+    } else {
+        apkPath += QLatin1String("debug");
+        if (buildApkStep->signPackage())
+            apkPath += QLatin1String("-signed");
+        apkPath += QLatin1String(".apk");
+    }
+    return target->activeBuildConfiguration()->buildDirectory()
+            .appendPath(QLatin1String(Android::Constants::ANDROID_BUILDDIRECTORY))
+            .appendPath(apkPath);
+}
diff --git a/src/plugins/android/androidqtsupport.h b/src/plugins/android/androidqtsupport.h
index 2283bf07d0..7c28878bf8 100644
--- a/src/plugins/android/androidqtsupport.h
+++ b/src/plugins/android/androidqtsupport.h
@@ -62,10 +62,9 @@ public:
     virtual bool canHandle(const ProjectExplorer::Target *target) const = 0;
     virtual QStringList soLibSearchPath(const ProjectExplorer::Target *target) const = 0;
     virtual QStringList projectTargetApplications(const ProjectExplorer::Target *target) const = 0;
-    virtual Utils::FileName apkPath(ProjectExplorer::Target *target, BuildType buildType) const = 0;
+    virtual Utils::FileName apkPath(ProjectExplorer::Target *target) const;
     virtual Utils::FileName androiddeployqtPath(ProjectExplorer::Target *target) const = 0;
     virtual Utils::FileName androiddeployJsonPath(ProjectExplorer::Target *target) const = 0;
-
     virtual void resetBuild(const ProjectExplorer::Target *target) = 0;
 };
 
diff --git a/src/plugins/android/androidsettingswidget.cpp b/src/plugins/android/androidsettingswidget.cpp
index 363d1b1a76..67fc53f105 100644
--- a/src/plugins/android/androidsettingswidget.cpp
+++ b/src/plugins/android/androidsettingswidget.cpp
@@ -162,6 +162,7 @@ AndroidSettingsWidget::AndroidSettingsWidget(QWidget *parent)
     m_ui->AntLocationPathChooser->setPromptDialogTitle(tr("Select ant Script"));
     m_ui->AntLocationPathChooser->setInitialBrowsePathBackup(dir);
     m_ui->AntLocationPathChooser->setPromptDialogFilter(filter);
+    m_ui->UseGradleCheckBox->setChecked(m_androidConfig.useGrandle());
 
     m_ui->OpenJDKLocationPathChooser->setFileName(m_androidConfig.openJDKLocation());
     m_ui->OpenJDKLocationPathChooser->setPromptDialogTitle(tr("Select JDK Path"));
@@ -577,6 +578,11 @@ void AndroidSettingsWidget::createKitToggled()
     m_androidConfig.setAutomaticKitCreation(m_ui->CreateKitCheckBox->isChecked());
 }
 
+void AndroidSettingsWidget::useGradleToggled()
+{
+    m_androidConfig.setUseGradle(m_ui->UseGradleCheckBox->isChecked());
+}
+
 void AndroidSettingsWidget::checkGdbFinished()
 {
     QPair<QStringList, bool> result = m_checkGdbWatcher.future().result();
diff --git a/src/plugins/android/androidsettingswidget.h b/src/plugins/android/androidsettingswidget.h
index 8e7aaf5b89..668a0d6b4e 100644
--- a/src/plugins/android/androidsettingswidget.h
+++ b/src/plugins/android/androidsettingswidget.h
@@ -91,6 +91,7 @@ private slots:
     void dataPartitionSizeEditingFinished();
     void manageAVD();
     void createKitToggled();
+    void useGradleToggled();
 
     void checkGdbFinished();
     void showGdbWarningDialog();
diff --git a/src/plugins/android/androidsettingswidget.ui b/src/plugins/android/androidsettingswidget.ui
index 4b4321f70a..147d49ed55 100644
--- a/src/plugins/android/androidsettingswidget.ui
+++ b/src/plugins/android/androidsettingswidget.ui
@@ -30,7 +30,7 @@
      </property>
     </widget>
    </item>
-   <item row="10" column="1">
+   <item row="11" column="1">
     <widget class="Utils::PathChooser" name="AntLocationPathChooser" native="true"/>
    </item>
    <item row="1" column="1">
@@ -108,7 +108,7 @@
    <item row="0" column="1">
     <widget class="Utils::PathChooser" name="OpenJDKLocationPathChooser" native="true"/>
    </item>
-   <item row="10" column="2">
+   <item row="11" column="2">
     <widget class="QToolButton" name="downloadAntToolButton">
      <property name="toolTip">
       <string>Download Ant</string>
@@ -119,7 +119,7 @@
      </property>
     </widget>
    </item>
-   <item row="10" column="0">
+   <item row="11" column="0">
     <widget class="QLabel" name="AntLocationLabel">
      <property name="sizePolicy">
       <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
@@ -157,7 +157,7 @@
      </property>
     </widget>
    </item>
-   <item row="11" column="0" colspan="2">
+   <item row="12" column="0" colspan="2">
     <widget class="QFrame" name="AVDManagerFrame">
      <property name="frameShape">
       <enum>QFrame::StyledPanel</enum>
@@ -452,6 +452,19 @@
      </item>
     </layout>
    </item>
+   <item row="10" column="1">
+    <widget class="QCheckBox" name="UseGradleCheckBox">
+     <property name="sizePolicy">
+      <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
+       <horstretch>0</horstretch>
+       <verstretch>0</verstretch>
+      </sizepolicy>
+     </property>
+     <property name="text">
+      <string>Use Gradle instead of Ant</string>
+     </property>
+    </widget>
+   </item>
   </layout>
  </widget>
  <customwidgets>
@@ -474,8 +487,8 @@
    <slot>ndkLocationEditingFinished()</slot>
    <hints>
     <hint type="sourcelabel">
-     <x>420</x>
-     <y>49</y>
+     <x>605</x>
+     <y>143</y>
     </hint>
     <hint type="destinationlabel">
      <x>352</x>
@@ -490,8 +503,8 @@
    <slot>sdkLocationEditingFinished()</slot>
    <hints>
     <hint type="sourcelabel">
-     <x>420</x>
-     <y>17</y>
+     <x>605</x>
+     <y>82</y>
     </hint>
     <hint type="destinationlabel">
      <x>352</x>
@@ -506,8 +519,8 @@
    <slot>antLocationEditingFinished()</slot>
    <hints>
     <hint type="sourcelabel">
-     <x>420</x>
-     <y>113</y>
+     <x>605</x>
+     <y>315</y>
     </hint>
     <hint type="destinationlabel">
      <x>352</x>
@@ -522,8 +535,8 @@
    <slot>openJDKLocationEditingFinished()</slot>
    <hints>
     <hint type="sourcelabel">
-     <x>420</x>
-     <y>49</y>
+     <x>605</x>
+     <y>31</y>
     </hint>
     <hint type="destinationlabel">
      <x>352</x>
@@ -538,8 +551,8 @@
    <slot>addAVD()</slot>
    <hints>
     <hint type="sourcelabel">
-     <x>693</x>
-     <y>199</y>
+     <x>793</x>
+     <y>394</y>
     </hint>
     <hint type="destinationlabel">
      <x>352</x>
@@ -554,8 +567,8 @@
    <slot>removeAVD()</slot>
    <hints>
     <hint type="sourcelabel">
-     <x>693</x>
-     <y>230</y>
+     <x>793</x>
+     <y>427</y>
     </hint>
     <hint type="destinationlabel">
      <x>352</x>
@@ -570,8 +583,8 @@
    <slot>startAVD()</slot>
    <hints>
     <hint type="sourcelabel">
-     <x>693</x>
-     <y>261</y>
+     <x>793</x>
+     <y>460</y>
     </hint>
     <hint type="destinationlabel">
      <x>352</x>
@@ -586,8 +599,8 @@
    <slot>avdActivated(QModelIndex)</slot>
    <hints>
     <hint type="sourcelabel">
-     <x>309</x>
-     <y>260</y>
+     <x>328</x>
+     <y>605</y>
     </hint>
     <hint type="destinationlabel">
      <x>352</x>
@@ -602,8 +615,8 @@
    <slot>avdActivated(QModelIndex)</slot>
    <hints>
     <hint type="sourcelabel">
-     <x>309</x>
-     <y>260</y>
+     <x>328</x>
+     <y>605</y>
     </hint>
     <hint type="destinationlabel">
      <x>352</x>
@@ -618,8 +631,8 @@
    <slot>dataPartitionSizeEditingFinished()</slot>
    <hints>
     <hint type="sourcelabel">
-     <x>543</x>
-     <y>153</y>
+     <x>614</x>
+     <y>360</y>
     </hint>
     <hint type="destinationlabel">
      <x>352</x>
@@ -634,8 +647,8 @@
    <slot>manageAVD()</slot>
    <hints>
     <hint type="sourcelabel">
-     <x>568</x>
-     <y>268</y>
+     <x>792</x>
+     <y>359</y>
     </hint>
     <hint type="destinationlabel">
      <x>339</x>
@@ -650,8 +663,8 @@
    <slot>createKitToggled()</slot>
    <hints>
     <hint type="sourcelabel">
-     <x>358</x>
-     <y>99</y>
+     <x>543</x>
+     <y>228</y>
     </hint>
     <hint type="destinationlabel">
      <x>339</x>
@@ -666,8 +679,8 @@
    <slot>openSDKDownloadUrl()</slot>
    <hints>
     <hint type="sourcelabel">
-     <x>20</x>
-     <y>20</y>
+     <x>830</x>
+     <y>85</y>
     </hint>
     <hint type="destinationlabel">
      <x>20</x>
@@ -682,8 +695,8 @@
    <slot>openNDKDownloadUrl()</slot>
    <hints>
     <hint type="sourcelabel">
-     <x>20</x>
-     <y>20</y>
+     <x>830</x>
+     <y>141</y>
     </hint>
     <hint type="destinationlabel">
      <x>20</x>
@@ -698,8 +711,8 @@
    <slot>openAntDownloadUrl()</slot>
    <hints>
     <hint type="sourcelabel">
-     <x>20</x>
-     <y>20</y>
+     <x>830</x>
+     <y>313</y>
     </hint>
     <hint type="destinationlabel">
      <x>20</x>
@@ -714,8 +727,8 @@
    <slot>openOpenJDKDownloadUrl()</slot>
    <hints>
     <hint type="sourcelabel">
-     <x>20</x>
-     <y>20</y>
+     <x>830</x>
+     <y>29</y>
     </hint>
     <hint type="destinationlabel">
      <x>20</x>
@@ -723,6 +736,22 @@
     </hint>
    </hints>
   </connection>
+  <connection>
+   <sender>UseGradleCheckBox</sender>
+   <signal>toggled(bool)</signal>
+   <receiver>AndroidSettingsWidget</receiver>
+   <slot>useGradleToggled()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>395</x>
+     <y>238</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>324</x>
+     <y>223</y>
+    </hint>
+   </hints>
+  </connection>
  </connections>
  <slots>
   <slot>sdkLocationEditingFinished()</slot>