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;
}
QList<QObject *> Gallery::fetchAll()
{
#ifdef Q_OS_ANDROID
//ref(android): http://stackoverflow.com/questions/4195660/get-list-of-photo-galleries-on-android
//ref(thumbnail): http://stackoverflow.com/questions/5013176/displaying-photo-thumbnails-on-map
/*
// which image properties are we querying
String[] projection = new String[]{
MediaStore.Images.Media._ID,
MediaStore.Images.Media.BUCKET_DISPLAY_NAME,
MediaStore.Images.Media.DATE_TAKEN
};
*/
QAndroidJniObject MediaStore_Images_Media__ID
= QAndroidJniObject::getStaticObjectField(
"android/provider/BaseColumns", "_ID", "Ljava/lang/String;");
qDebug() << "MediaStore_Images_Media__ID.isValid()=" << MediaStore_Images_Media__ID.isValid();
QAndroidJniObject MediaStore_Images_Media_BUCKET_ID
= QAndroidJniObject::getStaticObjectField(
"android/provider/MediaStore$Images$ImageColumns", "BUCKET_ID", "Ljava/lang/String;");
qDebug() << "MediaStore_Images_Media_BUCKET_ID.isValid()=" << MediaStore_Images_Media_BUCKET_ID.isValid();
QAndroidJniObject MediaStore_Images_Media_BUCKET_DISPLAY_NAME
= QAndroidJniObject::getStaticObjectField(
"android/provider/MediaStore$Images$ImageColumns", "BUCKET_DISPLAY_NAME", "Ljava/lang/String;");
qDebug() << "MediaStore_Images_Media_BUCKET_DISPLAY_NAME.isValid()=" << MediaStore_Images_Media_BUCKET_DISPLAY_NAME.isValid();
QAndroidJniObject MediaStore_Images_Media_DATE_TAKEN
= QAndroidJniObject::getStaticObjectField(
"android/provider/MediaStore$Images$ImageColumns", "DATE_TAKEN", "Ljava/lang/String;");
qDebug() << "MediaStore_Images_Media_DATE_TAKEN.isValid()=" << MediaStore_Images_Media_DATE_TAKEN.isValid();
QAndroidJniObject MediaStore_MediaColumns_DATA
= QAndroidJniObject::getStaticObjectField(
"android/provider/MediaStore$MediaColumns", "DATA", "Ljava/lang/String;");
qDebug() << "MediaStore_MediaColumns_DATA.isValid()=" << MediaStore_MediaColumns_DATA.isValid();
QAndroidJniObject MediaStore_MediaColumns_WIDTH
= QAndroidJniObject::getStaticObjectField(
"android/provider/MediaStore$MediaColumns", "WIDTH", "Ljava/lang/String;");
qDebug() << "MediaStore_MediaColumns_WIDTH.isValid()=" << MediaStore_MediaColumns_WIDTH.isValid();
QAndroidJniObject MediaStore_MediaColumns_HEIGHT
= QAndroidJniObject::getStaticObjectField(
"android/provider/MediaStore$MediaColumns", "HEIGHT", "Ljava/lang/String;");
qDebug() << "MediaStore_MediaColumns_HEIGHT.isValid()=" << MediaStore_MediaColumns_HEIGHT.isValid();
QAndroidJniObject MediaStore_Images_ImageColumns_MINI_THUMB_MAGIC
= QAndroidJniObject::getStaticObjectField(
"android/provider/MediaStore$Images$ImageColumns", "MINI_THUMB_MAGIC", "Ljava/lang/String;");
qDebug() << "MediaStore_Images_ImageColumns_MINI_THUMB_MAGIC.isValid()=" << MediaStore_Images_ImageColumns_MINI_THUMB_MAGIC.isValid();
jint MediaStore_Images_Thumbnails_MICRO_KIND = QAndroidJniObject::getStaticField<jint>(
"android/provider/MediaStore$Images$Thumbnails", "MICRO_KIND");
qDebug() << "MediaStore_Images_Thumbnails_MICRO_KIND=" << MediaStore_Images_Thumbnails_MICRO_KIND;
QAndroidJniObject MediaStore_Images_Thumbnails_IMAGE_ID
= QAndroidJniObject::getStaticObjectField(
"android/provider/MediaStore$Images$Thumbnails", "IMAGE_ID", "Ljava/lang/String;");
qDebug() << "MediaStore_Images_Thumbnails_IMAGE_ID.isValid()=" << MediaStore_Images_Thumbnails_IMAGE_ID.isValid();
QAndroidJniObject MediaStore_Images_ImageColumns_ORIENTATION
= QAndroidJniObject::getStaticObjectField(
"android/provider/MediaStore$Images$ImageColumns", "ORIENTATION", "Ljava/lang/String;");
qDebug() << "MediaStore_Images_ImageColumns_ORIENTATION.isValid()=" << MediaStore_Images_ImageColumns_ORIENTATION.isValid();
QAndroidJniEnvironment env;
jstring emptyJString = env->NewStringUTF("");
jobjectArray projection = (jobjectArray)env->NewObjectArray(
9,
env->FindClass("java/lang/String"),
emptyJString
);
jobject projection0 = env->NewStringUTF( MediaStore_Images_Media__ID.toString().toStdString().c_str() );
env->SetObjectArrayElement(
projection, 0, projection0 );
jobject projection1 = env->NewStringUTF( MediaStore_Images_Media_BUCKET_ID.toString().toStdString().c_str() );
env->SetObjectArrayElement(
projection, 1, projection1 );
jobject projection2 = env->NewStringUTF( MediaStore_Images_Media_BUCKET_DISPLAY_NAME.toString().toStdString().c_str() );
env->SetObjectArrayElement(
projection, 2, projection2 );
jobject projection3 = env->NewStringUTF( MediaStore_Images_Media_DATE_TAKEN.toString().toStdString().c_str() );
env->SetObjectArrayElement(
projection, 3, projection3 );
jobject projection4 = env->NewStringUTF( MediaStore_MediaColumns_DATA.toString().toStdString().c_str() );
env->SetObjectArrayElement(
projection, 4, projection4 );
jobject projection5 = env->NewStringUTF( MediaStore_MediaColumns_WIDTH.toString().toStdString().c_str() );
env->SetObjectArrayElement(
projection, 5, projection5 );
jobject projection6 = env->NewStringUTF( MediaStore_MediaColumns_HEIGHT.toString().toStdString().c_str() );
env->SetObjectArrayElement(
projection, 6, projection6 );
jobject projection7 = env->NewStringUTF( MediaStore_Images_ImageColumns_MINI_THUMB_MAGIC.toString().toStdString().c_str() );
env->SetObjectArrayElement(
projection, 7, projection7 );
jobject projection8 = env->NewStringUTF( MediaStore_Images_ImageColumns_ORIENTATION.toString().toStdString().c_str() );
env->SetObjectArrayElement(
projection, 8, projection8 );
/*
// Get the base URI for the People table in the Contacts content provider.
Uri Images_EXTERNAL_CONTENT_URI = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
*/
QAndroidJniObject Images_EXTERNAL_CONTENT_URI
= QAndroidJniObject::getStaticObjectField(
"android/provider/MediaStore$Images$Media", "EXTERNAL_CONTENT_URI", "Landroid/net/Uri;");
qDebug() << "Images_EXTERNAL_CONTENT_URI.isValid()=" << Images_EXTERNAL_CONTENT_URI.isValid();
/*
// Make the query.
Cursor cur = managedQuery(Images_EXTERNAL_CONTENT_URI,
projection, // Which columns to return
"", // Which rows to return (all rows)
null, // Selection arguments (none)
"" // Ordering
);
*/
QAndroidJniObject activity = QAndroidJniObject::callStaticObjectMethod("org/qtproject/qt5/android/QtNative", "activity", "()Landroid/app/Activity;");
qDebug() << "activity.isValid()=" << activity.isValid();
QAndroidJniObject contentResolver = activity.callObjectMethod("getContentResolver","()Landroid/content/ContentResolver;");
QAndroidJniObject emptyString=QAndroidJniObject::fromString(QString("")); //path is valid
qDebug() << "emptyString.isValid()=" << emptyString.isValid();
QAndroidJniObject nullObj;
QAndroidJniObject cur = activity.callObjectMethod("managedQuery",
"(Landroid/net/Uri;[Ljava/lang/String;Ljava/lang/String;[Ljava/lang/String;Ljava/lang/String;)Landroid/database/Cursor;",
Images_EXTERNAL_CONTENT_URI.object<jobject>(), projection,
emptyString.object<jstring>(), nullObj.object<jobject>(), emptyString.object<jstring>()
);
qDebug() << "cur.isValid()=" << cur.isValid();
if (env->ExceptionCheck())
{
// Handle exception here.
qDebug() << "Exception when getting \"cur\"....";
env->ExceptionDescribe();
env->ExceptionClear();
}
QMap<QString, wpp::qt::GalleryFolder> folderList;
//if (cur.moveToFirst()) {
if ( cur.callMethod<jboolean>("moveToFirst") )
{
/*
int bucketColumn = cur.getColumnIndex(
MediaStore.Images.Media.BUCKET_DISPLAY_NAME);
*/
jint bucketColumn = cur.callMethod<jint>("getColumnIndex", "(Ljava/lang/String;)I", MediaStore_Images_Media_BUCKET_DISPLAY_NAME.object<jstring>());
qDebug() << "bucketColumn = " << bucketColumn;
/*
int dateColumn = cur.getColumnIndex(
MediaStore.Images.Media.DATE_TAKEN);
*/
jint dateColumn = cur.callMethod<jint>("getColumnIndex", "(Ljava/lang/String;)I", MediaStore_Images_Media_DATE_TAKEN.object<jstring>());
qDebug() << "dateColumn = " << dateColumn;
jint idColumn = cur.callMethod<jint>("getColumnIndex", "(Ljava/lang/String;)I", MediaStore_Images_Media__ID.object<jstring>());
qDebug() << "idColumn = " << idColumn;
jint bucketIdColumn = cur.callMethod<jint>("getColumnIndex", "(Ljava/lang/String;)I", MediaStore_Images_Media_BUCKET_ID.object<jstring>());
qDebug() << "bucketIdColumn = " << bucketIdColumn;
jint mediaColumnsDataColumn = cur.callMethod<jint>("getColumnIndex", "(Ljava/lang/String;)I", MediaStore_MediaColumns_DATA.object<jstring>());
qDebug() << "mediaColumnsDataColumn = " << mediaColumnsDataColumn;
jint widthColumn = cur.callMethod<jint>("getColumnIndex", "(Ljava/lang/String;)I", MediaStore_MediaColumns_WIDTH.object<jstring>());
qDebug() << "widthColumn = " << widthColumn;
jint heightColumn = cur.callMethod<jint>("getColumnIndex", "(Ljava/lang/String;)I", MediaStore_MediaColumns_HEIGHT.object<jstring>());
qDebug() << "heightColumn = " << heightColumn;
jint thumbIdColumn = cur.callMethod<jint>("getColumnIndex", "(Ljava/lang/String;)I", MediaStore_Images_ImageColumns_MINI_THUMB_MAGIC.object<jstring>());
qDebug() << "thumbIdColumn = " << thumbIdColumn;
//jint imageIdColumn = cur.callMethod<jint>("getColumnIndex", "(Ljava/lang/String;)I", MediaStore_Images_Media__ID.object<jstring>());
//qDebug() << "imageIdColumn = " << imageIdColumn;
jint orientationColumn = cur.callMethod<jint>("getColumnIndex", "(Ljava/lang/String;)I", MediaStore_Images_ImageColumns_ORIENTATION.object<jstring>());
qDebug() << "orientationColumn = " << orientationColumn;
do
{
//QAndroidJniObject _id = cur.callObjectMethod("getString","(I)Ljava/lang/String;", idColumn );
//qDebug() << "_id.isValid()=" << _id.isValid();
jlong _id = cur.callMethod<jlong>("getLong","(I)J", idColumn );
qDebug() << "_id=" << _id;
QAndroidJniObject bucketId = cur.callObjectMethod("getString","(I)Ljava/lang/String;", bucketIdColumn );
qDebug() << "bucketId.isValid()=" << bucketId.isValid();
QAndroidJniObject bucket = cur.callObjectMethod("getString","(I)Ljava/lang/String;", bucketColumn );
qDebug() << "bucket.isValid()=" << bucket.isValid();
QAndroidJniObject date = cur.callObjectMethod("getString","(I)Ljava/lang/String;", dateColumn );
qDebug() << "date.isValid()=" << date.isValid();
QAndroidJniObject mediaColumnsData = cur.callObjectMethod("getString","(I)Ljava/lang/String;", mediaColumnsDataColumn );
qDebug() << "mediaColumnsData.isValid()=" << mediaColumnsData.isValid();
QAndroidJniObject width = cur.callObjectMethod("getString","(I)Ljava/lang/String;", widthColumn );
qDebug() << "width.isValid()=" << width.isValid();
QAndroidJniObject height = cur.callObjectMethod("getString","(I)Ljava/lang/String;", heightColumn );
qDebug() << "height.isValid()=" << height.isValid();
QAndroidJniObject thumbId = cur.callObjectMethod("getString","(I)Ljava/lang/String;", thumbIdColumn );
qDebug() << "thumbId.isValid()=" << thumbId.isValid();
//jlong thumbId = cur.callMethod<jlong>("getLong", "(I)J", thumbIdColumn);
if (env->ExceptionCheck())
{
// Handle exception here.
qDebug() << "Exception when getting \"thumbId\"....";
env->ExceptionDescribe();
env->ExceptionClear();
}
qDebug() << "thumbId=" << thumbId.toString();
//QAndroidJniObject imageId = cur.callObjectMethod("getString","(I)Ljava/lang/String;", imageIdColumn );
//qDebug() << "imageId.isValid()=" << imageId.isValid();
// MediaStore.Images.Thumbnails.getThumbnail(getContentResolver(), imageID, MediaStore.Images.Thumbnails.MINI_KIND, null);
/*QAndroidJniObject thumbnailBitmap = QAndroidJniObject::callStaticObjectMethod(
"android/provider/MediaStore$Images$Thumbnails", "getThumbnail",
"(Landroid/content/ContentResolver;JILandroid/graphics/BitmapFactory$Options;)Landroid/graphics/Bitmap;",
contentResolver.object<jobject>(), _id,
MediaStore_Images_Thumbnails_MICRO_KIND,
nullObj.object<jobject>()
);
qDebug() << "thumbnailBitmap.isValid()=" << thumbnailBitmap.isValid();
*/
//QAndroidJniObject orientation = cur.callObjectMethod("getString","(I)Ljava/lang/String;", orientationColumn );
//qDebug() << "orientation.isValid()=" << orientation.isValid();
jint orientation = cur.callMethod<jint>("getInt","(I)I", orientationColumn );
qDebug() << "orientation=" << orientation;
QAndroidJniObject thumbData = QAndroidJniObject::fromString( QString("") );
if ( false ) //if ( thumbId > 0 )
{
// String[] args = new String[]{String.valueOf(thumbId)};
jobjectArray args = (jobjectArray)env->NewObjectArray(
1,
env->FindClass("java/lang/String"),
emptyJString
);
jstring thumbIdJString = env->NewStringUTF( thumbId.toString().toStdString().c_str() );
env->SetObjectArrayElement(
//args, 0, env->NewStringUTF( QString().sprintf("%ld",thumbId).toStdString().c_str() ) );
args, 0, thumbIdJString );
// Cursor curThumb = managedQuery(Thumbnails.EXTERNAL_CONTENT_URI, null, Thumbnails._ID + "= ?", args, null);
QAndroidJniObject Images_Thumbnails__ID
= QAndroidJniObject::getStaticObjectField(
"android/provider/BaseColumns", "_ID", "Ljava/lang/String;");
qDebug() << "Images_Thumbnails__ID.isValid()=" << Images_Thumbnails__ID.isValid();
QAndroidJniObject selection=QAndroidJniObject::fromString( Images_Thumbnails__ID.toString() + "= ?" ); //path is valid
QAndroidJniObject curThumb = activity.callObjectMethod("managedQuery",
"(Landroid/net/Uri;[Ljava/lang/String;Ljava/lang/String;[Ljava/lang/String;Ljava/lang/String;)Landroid/database/Cursor;",
Images_EXTERNAL_CONTENT_URI.object<jobject>(), nullObj.object<jobject>(),
selection.object<jstring>(), args, nullObj.object<jobject>()
);
qDebug() << "curThumb.isValid()=" << curThumb.isValid();
//if( curThumb.moveToFirst() ){
if ( curThumb.callMethod<jboolean>("moveToFirst") )
{
// String path = curThumb.getString(curThumb.getColumnIndex(Thumbnails.DATA));
QAndroidJniObject Images_Thumbnails_DATA
= QAndroidJniObject::getStaticObjectField(
"android/provider/MediaStore$Images$Thumbnails", "DATA", "Ljava/lang/String;");
qDebug() << "Images_Thumbnails_DATA.isValid()=" << Images_Thumbnails_DATA.isValid();
jint thumbDataColumn = curThumb.callMethod<jint>("getColumnIndex", "(Ljava/lang/String;)I", Images_Thumbnails_DATA.object<jstring>());
qDebug() << "thumbDataColumn = " << thumbDataColumn;
thumbData = cur.callObjectMethod("getString","(I)Ljava/lang/String;", thumbDataColumn );
qDebug() << "thumbData.isValid()=" << thumbData.isValid();
}
env->DeleteLocalRef(args);
env->DeleteLocalRef(thumbIdJString);
}
qDebug() << "_id=" << _id
<< ", bucketId=" << bucketId.toString()
<< ", bucket=" << bucket.toString()
<< ", date_taken=" << date.toString()
<< ", WxH=" << width.toString() << "x" << height.toString()
<< ", orientation=" << orientation
<< ", thumbId=" << thumbId.toString()
<< ", thumbData=" << thumbData.toString()
<< ", abs_path=" << mediaColumnsData.toString();
if ( !folderList.contains( bucketId.toString() ) )
{
qDebug() << "create folder:" << bucketId.toString();
GalleryFolder galleryFolder;
galleryFolder.setId( bucketId.toString() );
galleryFolder.setName( bucket.toString() );
folderList.insert(bucketId.toString(), galleryFolder);
}
wpp::qt::GalleryPhoto photo;
photo.setAbsolutePath( mediaColumnsData.toString() );
photo.setWidth( width.toString().toInt() );
photo.setHeight( height.toString().toInt() );
photo.setOrientation( orientation );
qDebug()<<"orientation===" << photo.getOrientation();
folderList[ bucketId.toString() ].addPhoto( photo );
}
while ( cur.callMethod<jboolean>("moveToNext") );
//while (cur.moveToNext());
}
env->DeleteLocalRef(emptyJString);
env->DeleteLocalRef(projection);
env->DeleteLocalRef(projection0);
env->DeleteLocalRef(projection1);
env->DeleteLocalRef(projection2);
env->DeleteLocalRef(projection3);
env->DeleteLocalRef(projection4);
env->DeleteLocalRef(projection5);
env->DeleteLocalRef(projection6);
env->DeleteLocalRef(projection7);
env->DeleteLocalRef(projection8);
//change QMap to QList
QList<QObject *> finalFolderList;
for ( wpp::qt::GalleryFolder folder : folderList )
{
finalFolderList.push_back( new wpp::qt::GalleryFolder( folder ) );
}
this->setFolders( QVariant::fromValue( finalFolderList ) );
for ( const QObject *obj : finalFolderList )
{
const wpp::qt::GalleryFolder *f = dynamic_cast< const wpp::qt::GalleryFolder * >( obj );
qDebug() << "FOLDER" << f->getPhotos().value< QList<QObject*> >().size() << ":" << f->getName();
}
return finalFolderList;
#else
return QList<QObject *>();
#endif
}
/*
* This function operates on the assumption that each
* field is of type java/lang/String.
*/
QAndroidJniObject valueForStaticField(JavaNames javaName, JavaNames javaFieldName)
{
//construct key
//the switch statements are used to reduce the number of duplicated strings
//in the library
const char* className;
switch (javaName) {
case JavaNames::BluetoothAdapter:
className = javaBluetoothAdapterClassName; break;
case JavaNames::BluetoothDevice:
className = javaBluetoothDeviceClassName; break;
default:
qCWarning(QT_BT_ANDROID) << "Unknown java class name passed to valueForStaticField():" << javaName;
return QAndroidJniObject();
}
const char *fieldName;
switch (javaFieldName) {
case JavaNames::ActionAclConnected:
fieldName = javaActionAclConnected; break;
case JavaNames::ActionAclDisconnected:
fieldName = javaActionAclDisconnected; break;
case JavaNames::ActionBondStateChanged:
fieldName = javaActionBondStateChanged; break;
case JavaNames::ActionDiscoveryStarted:
fieldName = javaActionDiscoveryStarted; break;
case JavaNames::ActionDiscoveryFinished:
fieldName = javaActionDiscoveryFinished; break;
case JavaNames::ActionFound:
fieldName = javaActionFound; break;
case JavaNames::ActionPairingRequest:
fieldName = javaActionPairingRequest; break;
case JavaNames::ActionScanModeChanged:
fieldName = javaActionScanModeChanged; break;
case JavaNames::ActionUuid:
fieldName = javaActionUuid; break;
case JavaNames::ExtraBondState:
fieldName = javaExtraBondState; break;
case JavaNames::ExtraDevice:
fieldName = javaExtraDevice; break;
case JavaNames::ExtraPairingKey:
fieldName = javaExtraPairingKey; break;
case JavaNames::ExtraPairingVariant:
fieldName = javaExtraPairingVariant; break;
case JavaNames::ExtraRssi:
fieldName = javaExtraRssi; break;
case JavaNames::ExtraScanMode:
fieldName = javaExtraScanMode; break;
case JavaNames::ExtraUuid:
fieldName = javaExtraUuid; break;
default:
qCWarning(QT_BT_ANDROID) << "Unknown java field name passed to valueForStaticField():" << javaFieldName;
return QAndroidJniObject();
}
int offset_class = qstrlen(className);
int offset_field = qstrlen(fieldName);
QByteArray key(offset_class + offset_field, Qt::Uninitialized);
memcpy(key.data(), className, offset_class);
memcpy(key.data()+offset_class, fieldName, offset_field);
JCachedStringFields::iterator it = cachedStringFields()->find(key);
if (it == cachedStringFields()->end()) {
QAndroidJniEnvironment env;
QAndroidJniObject fieldValue = QAndroidJniObject::getStaticObjectField(
className, fieldName, "Ljava/lang/String;");
if (env->ExceptionCheck()) {
env->ExceptionDescribe();
env->ExceptionClear();
cachedStringFields()->insert(key, QAndroidJniObject());
return QAndroidJniObject();
}
cachedStringFields()->insert(key, fieldValue);
return fieldValue;
} else {
return it.value();
}
}