static jobject createHashMap(const QVariantMap &data) {
QAndroidJniEnvironment env;
jclass mapClass = env->FindClass("java/util/HashMap");
if (mapClass == NULL) {
qWarning() << "Failed to find class" << "java/util/HashMap";
return NULL;
}
jclass integerClass = env->FindClass("java/lang/Integer");
jmethodID integerConstructor = env->GetMethodID(integerClass, "<init>", "(I)V");
jclass booleanClass = env->FindClass("java/lang/Boolean");
jmethodID booleanConstructor = env->GetMethodID(booleanClass,"<init>","(Z)V");
jsize map_len = data.size();
jmethodID init = env->GetMethodID(mapClass, "<init>", "(I)V");
jobject hashMap = env->NewObject( mapClass, init, map_len);
jmethodID put = env->GetMethodID( mapClass, "put",
"(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;");
QMapIterator<QString, QVariant> iter(data);
while (iter.hasNext()) {
iter.next();
// qDebug() << iter.key() << iter.value();
QString key = iter.key();
jstring jkey = env->NewStringUTF(key.toLocal8Bit().data());
QVariant v = iter.value();
if (v.type() == QVariant::String) {
QString str = v.toString();
jstring vString = env->NewStringUTF(str.toLocal8Bit().data());
env->CallObjectMethod(hashMap,put,jkey,vString);
} else if (v.type() == QVariant::Int) {
jobject integer = env->NewObject(integerClass,integerConstructor,v.toInt());
env->CallObjectMethod(hashMap,put,jkey,integer);
} else if (v.type() == QVariant::Bool) {
jobject boolean = env->NewObject(booleanClass,booleanConstructor,v.toBool());
env->CallObjectMethod(hashMap,put,jkey,boolean);
} else {
qWarning() << "QASystemDispatcher: Non-supported data type - " << v.type();
}
}
if (env->ExceptionOccurred()) {
env->ExceptionDescribe();
env->ExceptionClear();
}
return hashMap;
}
float ScreenValues::retrieveDensity()
{
#ifdef Q_OS_ANDROID
QAndroidJniEnvironment env;
env->PushLocalFrame(9);
QAndroidJniObject activity = QAndroidJniObject::callStaticObjectMethod("org/qtproject/qt5/android/QtNative",
"activity",
"()Landroid/app/Activity;");
jclass activityClass = env->GetObjectClass(activity.object<jobject>());
jmethodID mIDGetResources = env->GetMethodID(activityClass,
"getResources",
"()Landroid/content/res/Resources;");
jobject resources = env->CallObjectMethod(activity.object<jobject>(), mIDGetResources);
jclass resourcesClass = env->GetObjectClass(resources);
jmethodID mIDGetDisplayMetrics = env->GetMethodID(resourcesClass,
"getDisplayMetrics",
"()Landroid/util/DisplayMetrics;");
jobject displayMetrics = env->CallObjectMethod(resources, mIDGetDisplayMetrics);
jclass displayMetricsClass = env->GetObjectClass(displayMetrics);
jfieldID fIDDensityDpi = env->GetFieldID(displayMetricsClass, "density", "F");
jfloat densityDpi = env->GetFloatField(displayMetrics, fIDDensityDpi);
float result = (float)densityDpi;
env->PopLocalFrame(NULL);
return result;
#else
return QGuiApplication::primaryScreen()->physicalDotsPerInch();
#endif
}
bool QBluetoothSocketPrivate::fallBackConnect(QAndroidJniObject uuid, int channel)
{
qCWarning(QT_BT_ANDROID) << "Falling back to workaround.";
QAndroidJniEnvironment env;
jclass remoteDeviceClazz = env->GetObjectClass(remoteDevice.object());
jmethodID getClassMethod = env->GetMethodID(remoteDeviceClazz, "getClass", "()Ljava/lang/Class;");
if (!getClassMethod) {
qCWarning(QT_BT_ANDROID) << "BluetoothDevice.getClass method could not be found.";
return false;
}
QAndroidJniObject remoteDeviceClass = QAndroidJniObject(env->CallObjectMethod(remoteDevice.object(), getClassMethod));
if (!remoteDeviceClass.isValid()) {
qCWarning(QT_BT_ANDROID) << "Could not invoke BluetoothDevice.getClass.";
return false;
}
jclass classClass = env->FindClass("java/lang/Class");
jclass integerClass = env->FindClass("java/lang/Integer");
jfieldID integerType = env->GetStaticFieldID(integerClass, "TYPE", "Ljava/lang/Class;");
jobject integerObject = env->GetStaticObjectField(integerClass, integerType);
if (!integerObject) {
qCWarning(QT_BT_ANDROID) << "Could not get Integer.TYPE";
return false;
}
jobjectArray paramTypes = env->NewObjectArray(1, classClass, integerObject);
if (!paramTypes) {
qCWarning(QT_BT_ANDROID) << "Could not create new Class[]{Integer.TYPE}";
return false;
}
QAndroidJniObject parcelUuid("android/os/ParcelUuid", "(Ljava/util/UUID;)V",
uuid.object());
if (parcelUuid.isValid()) {
jint socketChannel = remoteDevice.callMethod<jint>("getServiceChannel",
"(Landroid/os/ParcelUuid;)I",
parcelUuid.object());
if (env->ExceptionCheck()) {
env->ExceptionDescribe();
env->ExceptionClear();
}
if (socketChannel
== remoteDevice.getStaticField<jint>("android/bluetooth/BluetoothDevice", "ERROR")) {
qCWarning(QT_BT_ANDROID) << "Cannot determine RFCOMM service channel.";
} else {
qCWarning(QT_BT_ANDROID) << "Using found rfcomm channel" << socketChannel;
channel = socketChannel;
}
}
QAndroidJniObject method = remoteDeviceClass.callObjectMethod(
"getMethod",
"(Ljava/lang/String;[Ljava/lang/Class;)Ljava/lang/reflect/Method;",
QAndroidJniObject::fromString(QLatin1String("createRfcommSocket")).object<jstring>(),
paramTypes);
if (!method.isValid() || env->ExceptionCheck()) {
qCWarning(QT_BT_ANDROID) << "Could not invoke getMethod";
if (env->ExceptionCheck()) {
env->ExceptionDescribe();
env->ExceptionClear();
}
return false;
}
jclass methodClass = env->GetObjectClass(method.object());
jmethodID invokeMethodId = env->GetMethodID(
methodClass, "invoke",
"(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;");
if (!invokeMethodId) {
qCWarning(QT_BT_ANDROID) << "Could not invoke method.";
return false;
}
jmethodID valueOfMethodId = env->GetStaticMethodID(integerClass, "valueOf", "(I)Ljava/lang/Integer;");
jclass objectClass = env->FindClass("java/lang/Object");
jobjectArray invokeParams = env->NewObjectArray(1, objectClass, env->CallStaticObjectMethod(integerClass, valueOfMethodId, channel));
jobject invokeResult = env->CallObjectMethod(method.object(), invokeMethodId,
remoteDevice.object(), invokeParams);
if (!invokeResult)
{
qCWarning(QT_BT_ANDROID) << "Invoke Resulted with error.";
if (env->ExceptionCheck()) {
env->ExceptionDescribe();
env->ExceptionClear();
}
return false;
}
socketObject = QAndroidJniObject(invokeResult);
socketObject.callMethod<void>("connect");
if (env->ExceptionCheck()) {
env->ExceptionDescribe();
env->ExceptionClear();
qCWarning(QT_BT_ANDROID) << "Socket connect via workaround failed.";
return false;
}
qCWarning(QT_BT_ANDROID) << "Workaround invoked.";
return true;
}
static QVariantMap createVariantMap(jobject data) {
QVariantMap res;
QAndroidJniEnvironment env;
/* Reference : https://community.oracle.com/thread/1549999 */
// Get the HashMap Class
jclass jclass_of_hashmap = (env)->GetObjectClass(data);
// Get link to Method "entrySet"
jmethodID entrySetMethod = (env)->GetMethodID(jclass_of_hashmap, "entrySet", "()Ljava/util/Set;");
// Invoke the "entrySet" method on the HashMap object
jobject jobject_of_entryset = env->CallObjectMethod(data, entrySetMethod);
// Get the Set Class
jclass jclass_of_set = (env)->FindClass("java/util/Set"); // Problem during compilation !!!!!
if (jclass_of_set == 0) {
qWarning() << "java/util/Set lookup failed\n";
return res;
}
jclass jclass_of_string = env->FindClass("java/lang/String");
jclass jclass_of_integer = env->FindClass("java/lang/Integer");
jclass jclass_of_boolean = env->FindClass("java/lang/Boolean");
// Get link to Method "iterator"
jmethodID iteratorMethod = env->GetMethodID(jclass_of_set, "iterator", "()Ljava/util/Iterator;");
// Invoke the "iterator" method on the jobject_of_entryset variable of type Set
jobject jobject_of_iterator = env->CallObjectMethod(jobject_of_entryset, iteratorMethod);
// Get the "Iterator" class
jclass jclass_of_iterator = (env)->FindClass("java/util/Iterator");
// Get link to Method "hasNext"
jmethodID hasNextMethod = env->GetMethodID(jclass_of_iterator, "hasNext", "()Z");
jmethodID nextMethod = env->GetMethodID(jclass_of_iterator, "next", "()Ljava/lang/Object;");
while (env->CallBooleanMethod(jobject_of_iterator, hasNextMethod) ) {
QAndroidJniObject entry = env->CallObjectMethod(jobject_of_iterator,nextMethod);
QAndroidJniObject key = entry.callObjectMethod("getKey","()Ljava/lang/Object;");
QAndroidJniObject value = entry.callObjectMethod("getValue","()Ljava/lang/Object;");
QString k = key.toString();
if (!value.isValid())
continue;
if (env->IsInstanceOf(value.object<jobject>(),jclass_of_boolean)) {
res[k] = QVariant::fromValue<bool>(value.callMethod<jboolean>("booleanValue","()Z"));
} else if (env->IsInstanceOf(value.object<jobject>(),jclass_of_integer)) {
res[k] = value.callMethod<jint>("intValue","()I");
} else if (env->IsInstanceOf(value.object<jobject>(),jclass_of_string)) {
QString v = value.toString();
res[k] = v;
}
}
if (env->ExceptionOccurred()) {
env->ExceptionDescribe();
env->ExceptionClear();
}
// Delete local reference
return res;
}