first commit

service.cpp

@@ -0,0 +1,115 @@
+#include "service.h"
+
+#include <QGuiApplication>
+#include <QtCore/private/qandroidtypes_p.h>
+#include <QtCore/qjniobject.h>
+#include <QtCore/qcoreapplication.h>
+#include <QSysInfo>
+#include <QtCore/private/qandroidextras_p.h>
+
+// Q_DECLARE_JNI_CLASS(Intent, "android/content/Intent")
+Q_DECLARE_JNI_CLASS(ComponentName, "android/content/ComponentName")
+Q_DECLARE_JNI_CLASS(WaterLevelService, "org/qtproject/example/appwaterLevelSensor/WaterLevelService")
+
+
+static volatile float level = -1;
+
+static void handleWaterLevelUpdate(JNIEnv *env, jobject /*obj*/, jbyteArray data) {
+    jbyte *bytes = env->GetByteArrayElements(data, nullptr);
+    jsize len = env->GetArrayLength(data);
+
+    // Process your data here
+    qDebug() << "Received data from Java broadcast! Length:" << len;
+
+
+    level = *((float *) (bytes));
+
+    qDebug() << "Level received as: " << level;
+
+    env->ReleaseByteArrayElements(data, bytes, JNI_ABORT);
+}
+
+
+service::service(QObject *parent)
+    : QObject{parent}
+{
+    if(QSysInfo::productType() == "android") {
+        qDebug() << "Running android service";
+
+        using namespace QtJniTypes;
+        using namespace QNativeInterface;
+
+
+        JNINativeMethod methods[] = {
+            {"updateWaterLevel", "([B)V", (void *)handleWaterLevelUpdate}
+        };
+
+
+        // auto *androidApp = qGuiApp->nativeInterface<QAndroidApplication>();
+        // Context context = androidApp->context();
+        QJniObject context = QNativeInterface::QAndroidApplication::context();
+
+        QJniEnvironment env;
+        auto serviceClass = env.findClass(Traits<WaterLevelService>::className());
+        if (!serviceClass) {
+            qDebug() << "FAILED to find WaterLevelService class!";
+            env->ExceptionDescribe();   // VERY important
+            env->ExceptionClear();
+            return;
+        }
+
+        jclass javaClass = env.findClass("org/qtproject/example/appwaterLevelSensor/WaterLevelReceiver");
+        env->RegisterNatives(javaClass, methods, 1);
+
+
+        QJniObject::callStaticMethod<void>(
+            "org/qtproject/example/appwaterLevelSensor/WaterLevelServiceStarter",
+            "startService",
+            "(Landroid/content/Context;)V",
+            context.object<jobject>());  // pass the QtActivity instance            );
+
+        // QJniObject activity = QNativeInterface::QAndroidApplication::context();
+        // activity.callMethod<void>("startWaterLevelService", "()V");
+        // Intent serviceIntent(activity, serviceClass);
+        // activity.callMethod<WaterLevelService>("startWaterLevelService");
+
+        // activity.callMethod<()
+        // QJniObject::callStaticMethod<void>(
+        //     "org/qtproject/example/appwaterLevelSensor/WaterLevelService",
+        //     "startQtAndroidService",
+        //     "(Landroid/content/Context;)V",
+        //     activity.object<jobject>()
+        //     );
+
+        // activity.callMethod<void>("startWaterLevelService", "()V");        // Intent serviceIntent(context, serviceClass);
+        // context.callMethod<ComponentName>("startService", serviceIntent);
+
+        // context.callMethod<ComponentName>(
+        //     "startForegroundService",
+        //     serviceIntent
+        //     );
+        // QJniObject className = QJniObject::fromString(
+        //     "org.qtproject.example.appwaterLevelSensor.WaterLevelService"
+        //     );
+
+        // QJniObject serviceClassObj = QJniObject::callStaticObjectMethod(
+        //     "java/lang/Class",
+        //     "forName",
+        //     "(Ljava/lang/String;)Ljava/lang/Class;",
+        //     className.object<jstring>()
+        //     );
+
+        // QJniObject intent(
+        //     "android/content/Intent",
+        //     "(Landroid/content/Context;Ljava/lang/Class;)V",
+        //     context.object(),
+        //     serviceClassObj.object()
+        //     );
+
+        // context.callObjectMethod(
+        //     "startForegroundService",
+        //     "(Landroid/content/Intent;)Landroid/content/ComponentName;",
+        //     intent.object()
+        //     );        // WaterLevelService::callStaticMethod<void>("startQtAndroidService", context);
+    }
+}