Communication between C++ and Java without using JNI

benlau

Hi,

QuickAndroid project has released a new version with a feature for communication between C++ and Java without using JNI.

It provides a component called System Dispatcher for message delivery. The design is quite similar to the AppDispatcher from QuickFlux project. But the delivered message can be passed from C++ to Java and vice versa. Data type conversion is handled automatically.

C++

QASystemDispatcher::dispatch(QString name, QVariantMap message);

quickandroid/qasystemdispatcher.h at 4339203dbb87eed0fda611151481216db004385a · benlau/quickandroid

Java

class SystemDispatcher {
public static void dispatch ( String name , Map message ) { ... }
}

quickandroid/SystemDispatcher.java at 4339203dbb87eed0fda611151481216db004385a · benlau/quickandroid

The supported data types:

int <-> Integer
bool <-> Boolean
QString <-> java.lang.String
QVariantMap <-> java.util.Map (Non-nested)

Example code:
quickandroid/examples/quickandroidexample at master · benlau/quickandroid

Deliver message from QML

SystemDispatcher.dispatch("Notifier.notify",{
   title: "Quick Android Example",
   message: "Hello!"
});

quickandroid/NotificationDemo.qml at d76397a9c21732439fa9dffeff9bc6246e67e2bc · benlau/quickandroid

Handle the message from Java

public void onDispatched(String name , Map message) {
   if (name.equals("Notifier.notify")) {
      notificationManagerNotify(data);
   }
    return;
}

quickandroid/ExampleActivity.java at d76397a9c21732439fa9dffeff9bc6246e67e2bc · benlau/quickandroid