Added Java->C++ native calls for the session.

android/AndroidManifest.xml

@@ -7,7 +7,7 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
           package="org.kde.kasts"
           android:versionName="0.0.1"
-          android:versionCode="1628971416"
+          android:versionCode="1628976648"
           android:installLocation="auto">
 
     <supports-screens android:largeScreens="true" android:normalScreens="true" android:anyDensity="true" android:smallScreens="true"/>

android/src/org/kde/kasts/KastsActivity.java

@@ -175,6 +175,8 @@ public class KastsActivity extends QtActivity
 
             mSession.setActive(true);
 
+            play();
+
             //Update variables of mediaData;
             activity.updateNotification();
 
@@ -197,6 +199,13 @@ public class KastsActivity extends QtActivity
             //JNI call to audiomanager stop
             mSession.setActive(false);
         }
+
+        @Override
+        public void onSkipToNext() {
+            super.onPause();
+
+            //JNI to audiomanager next
+        }
     }
 
     /*
@@ -249,4 +258,10 @@ public class KastsActivity extends QtActivity
 
         activity.updateNotification();
     }
+
+    private static native void play();
+    private static native void pause();
+    private static native void stop();
+    private static native void next();
+    private static native void seek(long position);
 }

src/mediasessionclient.cpp

@@ -8,6 +8,54 @@
 #include "audiomanager.h"
 
 #include <QDebug>
+#include <QAndroidJniObject>
+#include <QAndroidJniEnvironment>
+
+static void play(JNIEnv *env, jobject thiz)
+{
+    Q_UNUSED(env)
+    Q_UNUSED(thiz)
+    // audio manager play
+}
+static void pause(JNIEnv *env, jobject thiz)
+{
+    Q_UNUSED(env)
+    Q_UNUSED(thiz)
+    // audio manager pause
+}
+static void stop(JNIEnv *env, jobject thiz)
+{
+    Q_UNUSED(env)
+    Q_UNUSED(thiz)
+    //audio manager previous
+}
+static void next(JNIEnv *env, jobject thiz)
+{
+    Q_UNUSED(env)
+    Q_UNUSED(thiz)
+    // audio manager next
+}
+static void seek(JNIEnv *env, jobject thiz, jlong position)
+{
+    Q_UNUSED(env)
+    Q_UNUSED(thiz)
+    // implement seek
+}
+void registerNativeMethods() {
+    JNINativeMethod methods[] {{"play", "()V", reinterpret_cast<void *>(play)},
+    {"pause", "()V", reinterpret_cast<void *>(pause)},
+    {"stop", "()V", reinterpret_cast<void *>(stop)},
+    {"next", "()V", reinterpret_cast<void *>(next)},
+    {"seek", "(J)V", reinterpret_cast<void *>(seek)}};
+
+    QAndroidJniObject javaClass("org/kde/kasts/KastsActivity");
+    QAndroidJniEnvironment env;
+    jclass objectClass = env->GetObjectClass(javaClass.object<jobject>());
+    env->RegisterNatives(objectClass,
+                         methods,
+                         sizeof(methods) / sizeof(methods[0]));
+    env->DeleteLocalRef(objectClass);
+}
 
 MediaSessionClient::MediaSessionClient(AudioManager *audioPlayer, QObject *parent)
     : QObject(parent)
@@ -60,7 +108,7 @@ void MediaSessionClient::setSessionMetadata()
     if (entry->authors().count() > 0) {
         for (auto &author : entry->authors()) {
             authorString.append(author->name());
-            (entry->authors().count > 1)
+            if(entry->authors().count() > 1)
                 authorString.append(QStringLiteral(", "));
         }
     }