Java events management in Qt5 C++ Android application

Hello everyone,

Developping an Android application, I would like to manage a click event from a Button object.
Here's the point : my source code is written in C++ (Qt) and my button in Java.
Can someone explain me how I can manage the click event between Java and Qt ?
Under the following form, compilation don't work.
Thanks!


myClass.cpp:

Code:

---

MyClass::MyClass(QWidget *parent) : QWidget(parent)
{
    myFunction();
}
 
 
void MyClass::myFunction() {
 
    QAndroidJniObject MyJavaClass;
    MyJavaClass = QAndroidJniObject("org/qtproject/example/myproject/MyJavaClass",
                                    "(Landroid/app/Activity;)V",
                                    QtAndroid::androidActivity().object<jobject>()
                                    );
}

---

MyJavaClass.java:

Code:

---

import ...
 
public class MyJavaClass {
 
    private final Activity m_MainActivity;
 
    public MyJavaClass(final Activity MainActivity)
    {
        m_MainActivity = MainActivity;
 
        m_MainActivity.runOnUiThread(new Runnable() {
            @Override
                public void run()
                {
                    RelativeLayout m_rlMainLayout;
                    m_rlMainLayout = new RelativeLayout(m_MainActivity);
                    m_MainActivity.setContentView(m_rlMainLayout);
 
                    ViewGroup.MarginLayoutParams mrgBtn;
                    ViewGroup.MarginLayoutParams mrgText;
 
                    TextView tvJavaText = new TextView(m_MainActivity);
                    tvJavaText.setText("Hello from Ui Thread!");
 
                    Button m_btn = new Button(m_MainActivity);
                    m_btn.setText("Hello Button");
                    m_btn.setOnClickListener(runningBtnClick);
                    m_rlMainLayout.addView(m_btn);
 
                    mrgBtn = (ViewGroup.MarginLayoutParams) m_btn.getLayoutParams();
                    mrgBtn.setMargins(150, 0, 0, 0);
                    m_btn.setLayoutParams(mrgBtn);
 
                    OnClickListener runningBtnClick = new OnClickListener() {
 
                        public void onClick(View v) {
                            mrgText.setMargins(150, 100, 0, 0);
                            tvText.setLayoutParams(mrgText);
                            tvText.setText("Hy, i clicked the button!");
                            System.out.println(m_btn.getLayoutParams().height);
                        }
                    };
               }
        }
   }
}

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