Qt on Android : How to Vibrate the device

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List below steps for all developers.

0) change the .pro file in QT in this way:

1. QT       += core gui androidextras

1. ANDROID_PACKAGE_SOURCE_DIR = $$PWD/android

1) Add the permission in the AndroidMainifest.xml

1. <uses-permission android:name="android.permission.VIBRATE"/>

2) replace the attribute in the activity:

from

1. android:name="org.qtproject.qt5.android.bindings.QtActivity"

to

1. android:name="org.qtproject.example.Chronometer.Vibrate"

Where Chronometer and Vibrate string can be changes.

3) add the include following in the mainwindow.h

1. #include <QtAndroidExtras/QAndroidJniObject>

4) add the following Vibrate.java class in the following directory

myprogget>android/src/org/qtproject/example/Chronometer/

where Chronometer can be change:

1. //
2. // Vibrate.java  
3. //
4. package org.qtproject.example.Chronometer;
6. import android.content.Context;
7. import android.os.Vibrator;
8. import android.app.Activity;
9. import android.os.Bundle;
11. public class Vibrate extends org.qtproject.qt5.android.bindings.QtActivity
12. {
14.    public static Vibrator m_vibrator;
15.    public static Vibrate m_istance;
17.    public Vibrate()
18.    {
19.        m_istance = this;
20.    }
23.    public static void start(int x)
24.    {
25.        if (m_vibrator == null)
26.        {
27.            if (m_istance != null)
28.            {
29.              m_vibrator = (Vibrator) m_istance.getSystemService(Context.VIBRATOR_SERVICE);
30.              m_vibrator.vibrate(x);
31.            }
33.        }
34.        else m_vibrator.vibrate(x);
35.    }
36. }

5) in your program call class in this way:

1. QAndroidJniObject::callStaticMethod<void>("org/qtproject/example/Chronometer/Vibrate", "start", "(I)V", 300);