Getting broadcast messages on Android

[Iktwo]

I've been trying to detect when an application is installed or removed, I added this to my manifest

@
<receiver android:name="com.iktwo.utils.PackageChangedReceiver">
<intent-filter>
<action android:name="android.intent.action.PACKAGE_ADDED" />
<action android:name="android.intent.action.PACKAGE_REMOVED" />
<action android:name="android.intent.action.PACKAGE_CHANGED"/>
<action android:name="android.intent.action.PACKAGE_REPLACED"/>
<data android:scheme="package" />
</intent-filter>
</receiver>
@

That works fine, onReceive is executed in my class, but I've been trying to get a signal in Qt, so I was following the help

@
void registerNativeMethods() {
JNINativeMethod methods[] {{"callNativeOne", "(I)V", reinterpret_cast<void *>(fromJavaOne)},
{"callNativeTwo", "(I)V", reinterpret_cast<void *>(fromJavaTwo)}};

QAndroidJniObject javaClass("com/iktwo/utils/QPackageManager");
QAndroidJniEnvironment env;
jclass objectClass = env->GetObjectClass(javaClass.object<jobject>());
env->RegisterNatives(objectClass,
                     methods,
                     sizeof(methods) / sizeof(methods[0]));
env->DeleteLocalRef(objectClass);

}
@

but I get this exception

@java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()@

I was looking at how is it implemented for bluetooth in 5.3 but still I can't get it to work, is there something I'm missing or doing wrong? Thanks!