C++ QAndroidJniEnvironment::DeleteLocalRef方法代码示例

本文整理汇总了C++中QAndroidJniEnvironment::DeleteLocalRef方法的典型用法代码示例。如果您正苦于以下问题：C++ QAndroidJniEnvironment::DeleteLocalRef方法的具体用法？C++ QAndroidJniEnvironment::DeleteLocalRef怎么用？C++ QAndroidJniEnvironment::DeleteLocalRef使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类QAndroidJniEnvironment的用法示例。

在下文中一共展示了QAndroidJniEnvironment::DeleteLocalRef方法的12个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: writeToPort

qint64 QSerialPortPrivate::writeToPort(const char *data, qint64 maxSize)
{
    if (deviceId == BAD_PORT)
    {
        q_ptr->setError(QSerialPort::NotOpenError);
        return 0;
    }

    QAndroidJniEnvironment jniEnv;
    jbyteArray jarrayL = jniEnv->NewByteArray(maxSize);
    jniEnv->SetByteArrayRegion(jarrayL, 0, maxSize, (jbyte *)data);
    if (jniEnv->ExceptionCheck())
        jniEnv->ExceptionClear();
    int resultL = QAndroidJniObject::callStaticMethod<jint>(
        kJniClassName,
        "write",
        "(I[BI)I",
        deviceId,
        jarrayL,
        internalWriteTimeoutMsec);

    if (jniEnv->ExceptionCheck())
    {
        jniEnv->ExceptionClear();
        q_ptr->setErrorString(QStringLiteral("Writing to the device threw an exception"));
        jniEnv->DeleteLocalRef(jarrayL);
        return 0;
    }
    jniEnv->DeleteLocalRef(jarrayL);
    return resultL;
}

开发者ID:KamalGalrani，项目名称:qgroundcontrol，代码行数:31，代码来源:qserialport_android.cpp

示例2: writeDescriptor

void QLowEnergyControllerPrivate::writeDescriptor(
        const QSharedPointer<QLowEnergyServicePrivate> service,
        const QLowEnergyHandle /*charHandle*/,
        const QLowEnergyHandle descHandle,
        const QByteArray &newValue)
{
    Q_ASSERT(!service.isNull());

    QAndroidJniEnvironment env;
    jbyteArray payload;
    payload = env->NewByteArray(newValue.size());
    env->SetByteArrayRegion(payload, 0, newValue.size(),
                            (jbyte *)newValue.constData());

    bool result = false;
    if (hub) {
        qCDebug(QT_BT_ANDROID) << "Write descriptor with handle " << descHandle
                 << newValue.toHex() << "(service:" << service->uuid << ")";
        result = hub->javaObject().callMethod<jboolean>("writeDescriptor", "(I[B)Z",
                                                        descHandle, payload);
    }

    if (env->ExceptionOccurred()) {
        env->ExceptionDescribe();
        env->ExceptionClear();
        result = false;
    }

    env->DeleteLocalRef(payload);

    if (!result)
        service->setError(QLowEnergyService::DescriptorWriteError);
}

开发者ID:2gis，项目名称:2gisqt5android，代码行数:33，代码来源:qlowenergycontroller_android.cpp

示例3: writeData

qint64 QBluetoothSocketPrivate::writeData(const char *data, qint64 maxSize)
{
    //TODO implement buffered behavior (so far only unbuffered)
    Q_Q(QBluetoothSocket);
    if (state != QBluetoothSocket::ConnectedState || !outputStream.isValid()) {
        qCWarning(QT_BT_ANDROID) << "Socket::writeData: " << state << outputStream.isValid();
        errorString = QBluetoothSocket::tr("Cannot write while not connected");
        q->setSocketError(QBluetoothSocket::OperationError);
        return -1;
    }

    QAndroidJniEnvironment env;
    jbyteArray nativeData = env->NewByteArray((qint32)maxSize);
    env->SetByteArrayRegion(nativeData, 0, (qint32)maxSize, reinterpret_cast<const jbyte*>(data));
    outputStream.callMethod<void>("write", "([BII)V", nativeData, 0, (qint32)maxSize);
    env->DeleteLocalRef(nativeData);
    emit q->bytesWritten(maxSize);

    if (env->ExceptionCheck()) {
        qCWarning(QT_BT_ANDROID) << "Error while writing";
        env->ExceptionDescribe();
        env->ExceptionClear();
        errorString = QBluetoothSocket::tr("Error during write on socket.");
        q->setSocketError(QBluetoothSocket::NetworkError);
        return -1;
    }

    return maxSize;
}

开发者ID:Drakey83，项目名称:steamlink-sdk，代码行数:29，代码来源:qbluetoothsocket_android.cpp

示例4: registerNativeMethods

bool JniNative::registerNativeMethods()
{
    JNINativeMethod methods[] {
        {"notifyMsg", "(III)V", (void*)notifyMsg},
        {"setDirectBuffer","(Ljava/lang/Object;I)V",(void*)setDirectBuffer}
    };

    const char *classname = "an/qt/useJar/ExtendsQtNative";
    jclass clazz;
    QAndroidJniEnvironment env;

    QAndroidJniObject javaClass(classname);
    clazz = env->GetObjectClass(javaClass.object<jobject>());
//    QDBG << "find ExtendsQtNative - " << clazz;
    bool result = false;
    if (clazz) {
        jint ret = env->RegisterNatives(clazz, methods, sizeof(methods) / sizeof(methods[0]));
        env->DeleteLocalRef(clazz);
//        QDBG << "RegisterNatives return - " << ret;
        result = ret >= 0;
    }
    if (env->ExceptionCheck())
        env->ExceptionClear();
    return result;
}

开发者ID:APCVSRepo，项目名称:hmi_sdk，代码行数:25，代码来源:JniNative.cpp

示例5: registerNativeMethods

static bool registerNativeMethods()
{
    JNINativeMethod methods[] {
        {"OnImageCaptured", "(ILjava/lang/String;)V", (void*)onImageCaptured}
    };

    const char *classname = "an/qt/imageProcessor/ImageCaptureNative";
    jclass clazz;
    QAndroidJniEnvironment env;

    QAndroidJniObject javaClass(classname);
    clazz = env->GetObjectClass(javaClass.object<jobject>());
    //clazz = env->FindClass(classname);
    qDebug() << "find ImageCaptureNative - " << clazz;
    bool result = false;
    if(clazz)
    {
        jint ret = env->RegisterNatives(clazz,
                                        methods,
                                        sizeof(methods) / sizeof(methods[0]));
        env->DeleteLocalRef(clazz);
        qDebug() << "RegisterNatives return - " << ret;
        result = ret >= 0;
    }
    if(env->ExceptionCheck()) env->ExceptionClear();
    return result;
}

开发者ID:weilaidb，项目名称:qtexample，代码行数:27，代码来源:main.cpp

示例6: addToImageGallery

void Wpp::addToImageGallery(const QString& imageFullPath)
{

#if defined(Q_OS_ANDROID)
	/*
	 http://stackoverflow.com/questions/2170214/image-saved-to-sdcard-doesnt-appear-in-androids-gallery-app
	File imageFile = ...
	MediaScannerConnection.scanFile(this, new String[] { imageFile.getPath() }, new String[] { "image/jpeg" }, null);
	 */

	QAndroidJniObject activity = QtAndroid::androidActivity();
	qDebug() << __FUNCTION__ << "activity.isValid()=" << activity.isValid();

	QAndroidJniEnvironment env;

	//new String[] { imageFile.getPath() }
	jobjectArray imageFilePaths = (jobjectArray)env->NewObjectArray(
		1,
		env->FindClass("java/lang/String"),
		(jobject)0
	);
	QAndroidJniObject imagePathJString = QAndroidJniObject::fromString(imageFullPath);
	env->SetObjectArrayElement(
		imageFilePaths, 0, imagePathJString.object<jstring>() );

	//new String[] { "image/jpeg", "image/png", "image/gif" }
	jobjectArray imageFileTypes = (jobjectArray)env->NewObjectArray(
		3,
		env->FindClass("java/lang/String"),
		(jobject)0
	);
	QAndroidJniObject imageType1 = QAndroidJniObject::fromString("image/jpeg");
	env->SetObjectArrayElement(
		imageFileTypes, 0, imageType1.object<jstring>() );
	QAndroidJniObject imageType2 = QAndroidJniObject::fromString("image/png");
	env->SetObjectArrayElement(
		imageFileTypes, 1, imageType2.object<jstring>() );
	QAndroidJniObject imageType3 = QAndroidJniObject::fromString("image/gif");
	env->SetObjectArrayElement(
		imageFileTypes, 2, imageType3.object<jstring>() );


	QAndroidJniObject::callStaticMethod<void>("android/media/MediaScannerConnection",
											  "scanFile",
											  "(Landroid/content/Context;[Ljava/lang/String;[Ljava/lang/String;Landroid/media/MediaScannerConnection$OnScanCompletedListener;)V",
											  activity.object<jobject>(),
											  imageFilePaths, imageFileTypes, (jobject)0);



	env->DeleteLocalRef(imageFilePaths);
	env->DeleteLocalRef(imageFileTypes);

#else

#endif


}

开发者ID:AndrewDesign，项目名称:wpp-qt，代码行数:59，代码来源:Wpp.cpp

示例7: onRegisterNativeMethods

void QQmlAndroidScrollView::onRegisterNativeMethods(jobject listener)
{
    JNINativeMethod methods[] {{"onScrollChanged", "(JII)V", reinterpret_cast<void *>(onScrollChanged)}};

    QAndroidJniEnvironment env;
    jclass cls = env->GetObjectClass(listener);
    env->RegisterNatives(cls, methods, sizeof(methods) / sizeof(methods[0]));
    env->DeleteLocalRef(cls);
}

开发者ID:butzist，项目名称:playground-qtqmlandroid，代码行数:9，代码来源:qqmlandroidscrollview.cpp

示例8: aseman_android_loclis_registerNativeMethods

bool aseman_android_loclis_registerNativeMethods() {
    JNINativeMethod methods[] {{"_locationListened", "(DDDLjava/lang/String;)V", reinterpret_cast<void *>(locationListened)}};

    QAndroidJniObject javaClass("land/aseman/android/extra/AsemanLocationListener");
    QAndroidJniEnvironment env;
    jclass objectClass = env->GetObjectClass(javaClass.object<jobject>());

    env->RegisterNatives(objectClass, methods, sizeof(methods) / sizeof(methods[0]));

    env->DeleteLocalRef(objectClass);
    return true;
}

开发者ID:ignatenkobrain，项目名称:aseman-qt-tools，代码行数:12，代码来源:asemanandroidlocationlistenercore.cpp

示例9: writeCharacteristic

void QLowEnergyControllerPrivate::writeCharacteristic(
        const QSharedPointer<QLowEnergyServicePrivate> service,
        const QLowEnergyHandle charHandle,
        const QByteArray &newValue,
        bool writeWithResponse)
{
    //TODO don't ignore WriteWithResponse, right now we assume responses
    Q_ASSERT(!service.isNull());

    if (!service->characteristicList.contains(charHandle))
        return;

    QAndroidJniEnvironment env;
    jbyteArray payload;
    payload = env->NewByteArray(newValue.size());
    env->SetByteArrayRegion(payload, 0, newValue.size(),
                            (jbyte *)newValue.constData());

    bool result = false;
    if (hub) {
        qCDebug(QT_BT_ANDROID) << "Write characteristic with handle " << charHandle
                 << newValue.toHex() << "(service:" << service->uuid
                 << ", writeWithResponse:" << writeWithResponse << ")";
        result = hub->javaObject().callMethod<jboolean>("writeCharacteristic", "(I[BI)Z",
                      charHandle, payload,
                      writeWithResponse ?  QLowEnergyService::WriteWithResponse : QLowEnergyService::WriteWithoutResponse);
    }

    if (env->ExceptionOccurred()) {
        env->ExceptionDescribe();
        env->ExceptionClear();
        result = false;
    }

    env->DeleteLocalRef(payload);

    if (!result)
        service->setError(QLowEnergyService::CharacteristicWriteError);
}

开发者ID:2gis，项目名称:2gisqt5android，代码行数:39，代码来源:qlowenergycontroller_android.cpp

示例10: handleActivityResult


//.........这里部分代码省略.........

				QString path(rawString);
				qDebug() << "path[]=" << path;
				paths.append(path);

				env->ReleaseStringUTFChars(string, rawString);
			}
			emit this->accepted(paths);

		}
		else
		{
			QAndroidJniEnvironment env;
			QAndroidJniObject uri = data.callObjectMethod("getData","()Landroid/net/Uri;");
			qDebug() << __FUNCTION__ << "uri.isValid()=" << uri.isValid();
			qDebug() << __FUNCTION__ << "uri=" << uri.toString();
			/*
			  url is like: "content://media/external/images/media/87332"
			  for KitKat(android 4.4), uri is like: "content://com.android.providers.media.documents/document/image:3951"
			 */
			QAndroidJniObject activity = QtAndroid::androidActivity();
			qDebug() << __FUNCTION__ << "activity.isValid()=" << activity.isValid();

			QAndroidJniObject contentResolver = activity.callObjectMethod("getContentResolver","()Landroid/content/ContentResolver;");
			qDebug() << __FUNCTION__ << "contentResolver.isValid()=" << contentResolver.isValid();

			/*if ( receiverRequestCode == PICK_FROM_FILE_KITKAT )
			{
				jint Intent__FLAG_GRANT_READ_URI_PERMISSION = QAndroidJniObject::getStaticField<jint>(
							"android.content.Intent", "FLAG_GRANT_READ_URI_PERMISSION");
				jint Intent__FLAG_GRANT_WRITE_URI_PERMISSION = QAndroidJniObject::getStaticField<jint>(
							"android.content.Intent", "FLAG_GRANT_WRITE_URI_PERMISSION");
				jint takeFlags = data.callMethod<jint>("getFlags","()I");
				takeFlags = takeFlags & ( Intent__FLAG_GRANT_READ_URI_PERMISSION | Intent__FLAG_GRANT_WRITE_URI_PERMISSION );

				contentResolver.callMethod<void>("takePersistableUriPermission","(Landroid/net/Uri;I)V",
																  uri.object<jobject>(), takeFlags);
			}*/
	/*
	String [] proj={MediaStore.Images.Media.DATA};
		Cursor cursor = getContentResolver().query(uri, proj,  null, null, null);
		int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
		cursor.moveToFirst();
		String path = cursor.getString(column_index);
		cursor.close();
	 */
			QAndroidJniObject MediaStore_Images_Media_DATA
					= QAndroidJniObject::getStaticObjectField(
						"android/provider/MediaStore$MediaColumns", "DATA", "Ljava/lang/String;");
						//"android/provider/MediaStore$Images$Media", "DATA", "Ljava/lang/String;");
			qDebug() << "MediaStore_Images_Media_DATA.isValid()=" << MediaStore_Images_Media_DATA.isValid();

			QAndroidJniObject nullObj;
			jstring emptyJString = env->NewStringUTF("");
			jobjectArray projection = (jobjectArray)env->NewObjectArray(
				1,
				env->FindClass("java/lang/String"),
				emptyJString
			);
			jobject projection0 = env->NewStringUTF( MediaStore_Images_Media_DATA.toString().toStdString().c_str() );
			env->SetObjectArrayElement(
				projection, 0, projection0 );

			//	Cursor cursor = getContentResolver().query(uri, proj,  null, null, null);
			QAndroidJniObject cursor = contentResolver.callObjectMethod("query",
				"(Landroid/net/Uri;[Ljava/lang/String;Ljava/lang/String;[Ljava/lang/String;Ljava/lang/String;)Landroid/database/Cursor;",
				uri.object<jobject>(), projection, nullObj.object<jstring>(), nullObj.object<jobjectArray>(), nullObj.object<jstring>());
			qDebug() << __FUNCTION__ << "cursor.isValid()=" << cursor.isValid();

			//int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
			jint column_index = cursor.callMethod<jint>(
						"getColumnIndexOrThrow","(Ljava/lang/String;)I", MediaStore_Images_Media_DATA.object<jstring>());
			qDebug() << "column_index=" << column_index;

			//cursor.moveToFirst();
			cursor.callMethod<jboolean>("moveToFirst");

			//	String path = cursor.getString(column_index);
			QAndroidJniObject path = cursor.callObjectMethod(
						"getString",
						"(I)Ljava/lang/String;", column_index );
			qDebug() << __FUNCTION__ << "path.isValid()=" << path.isValid();
			QString filePath = path.toString();
			qDebug() << "filePath=" << filePath;
			//cursor.close();
			cursor.callMethod<jboolean>("close");


			env->DeleteLocalRef(emptyJString);
			env->DeleteLocalRef(projection);
			env->DeleteLocalRef(projection0);

			QStringList paths;
			paths.append(filePath);
			emit this->accepted(paths);
			//m_imagePath = filePath;
			//emit this->imagePathChanged();
		}
	}
}

开发者ID:AndrewDesign，项目名称:wpp-qt，代码行数:101，代码来源:ImagePicker.cpp

示例11: managedQuery


//.........这里部分代码省略.........
					//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());

开发者ID:hongtoushizi，项目名称:wpp-qt，代码行数:67，代码来源:Gallery.cpp

示例12: handleActivityResult

void Gallery::handleActivityResult(int receiverRequestCode, int resultCode, const QAndroidJniObject & data)
{
	int PICK_FROM_FILE = 1;
	int SHOOT_PHOTO = 2;
	jint Activity__RESULT_OK = QAndroidJniObject::getStaticField<jint>(
				"android.app.Activity", "RESULT_OK");

	if ( receiverRequestCode == PICK_FROM_FILE && resultCode == Activity__RESULT_OK )
	{
		QAndroidJniEnvironment env;
		QAndroidJniObject uri = data.callObjectMethod("getData","()Landroid/net/Uri;");
		qDebug() << __FUNCTION__ << "uri.isValid()=" << uri.isValid();
		qDebug() << __FUNCTION__ << "uri=" << uri.toString();
		/*
		  url is like: "content://media/external/images/media/87332"
		 */
		QAndroidJniObject activity = QtAndroid::androidActivity();
		qDebug() << __FUNCTION__ << "activity.isValid()=" << activity.isValid();

		QAndroidJniObject contentResolver = activity.callObjectMethod("getContentResolver","()Landroid/content/ContentResolver;");
		qDebug() << __FUNCTION__ << "contentResolver.isValid()=" << contentResolver.isValid();

/*
String [] proj={MediaStore.Images.Media.DATA};
	Cursor cursor = getContentResolver().query(uri, proj,  null, null, null);
	int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
	cursor.moveToFirst();
	String path = cursor.getString(column_index);
	cursor.close();
 */
		QAndroidJniObject MediaStore_Images_Media_DATA
				= QAndroidJniObject::getStaticObjectField(
				"android/provider/MediaStore$MediaColumns", "DATA", "Ljava/lang/String;");
		qDebug() << "MediaStore_Images_Media_DATA.isValid()=" << MediaStore_Images_Media_DATA.isValid();

		QAndroidJniObject nullObj;
		jstring emptyJString = env->NewStringUTF("");
		jobjectArray projection = (jobjectArray)env->NewObjectArray(
			1,
			env->FindClass("java/lang/String"),
			emptyJString
		);
		jobject projection0 = env->NewStringUTF( MediaStore_Images_Media_DATA.toString().toStdString().c_str() );
		env->SetObjectArrayElement(
			projection, 0, projection0 );

		//	Cursor cursor = getContentResolver().query(uri, proj,  null, null, null);
		QAndroidJniObject cursor = contentResolver.callObjectMethod("query",
			"(Landroid/net/Uri;[Ljava/lang/String;Ljava/lang/String;[Ljava/lang/String;Ljava/lang/String;)Landroid/database/Cursor;",
			uri.object<jobject>(), projection, nullObj.object<jstring>(), nullObj.object<jobjectArray>(), nullObj.object<jstring>());
		qDebug() << __FUNCTION__ << "cursor.isValid()=" << cursor.isValid();

		//int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
		jint column_index = cursor.callMethod<jint>(
					"getColumnIndexOrThrow","(Ljava/lang/String;)I", MediaStore_Images_Media_DATA.object<jstring>());
		qDebug() << "column_index=" << column_index;

		//cursor.moveToFirst();
		cursor.callMethod<jboolean>("moveToFirst");

		//	String path = cursor.getString(column_index);
		QAndroidJniObject path = cursor.callObjectMethod(
					"getString",
					"(I)Ljava/lang/String;", column_index );
		qDebug() << __FUNCTION__ << "path.isValid()=" << path.isValid();
		QString filePath = path.toString();

		//cursor.close();
		cursor.callMethod<jboolean>("close");


		env->DeleteLocalRef(emptyJString);
		env->DeleteLocalRef(projection);
		env->DeleteLocalRef(projection0);
/*
		QAndroidJniObject inputStream = contentResolver.callObjectMethod(
					"openInputStream","(Landroid/net/Uri;)Ljava/io/InputStream;", uri.object<jobject>());
		qDebug() << __FUNCTION__ << "inputStream.isValid()=" << inputStream.isValid();

		QStringList paths = QStandardPaths::standardLocations(QStandardPaths::DataLocation);
		QDir dir( paths.first() );
		QDir parentDir( dir.filePath("..") );
		qDebug() << "parent path: " << parentDir.absolutePath();
		if ( !dir.exists() )
		{
			qDebug() << "dir not exist, make it:" << dir;
			qDebug() << "dir.name: " << dir.dirName();
			qDebug() << "new make dir returns: " << parentDir.mkpath( dir.dirName() );
			//qDebug() << "make dir returns: " << dir.mkdir(".");
		}
		QString pickFile = paths.first().append("/").append("PickFile");

		QAndroidJniEnvironment env;
		jbyteArray byteArray = env->NewByteArray(1024);

		jint fileSize = inputStream.callMethod<jint>(
					"available","()I");
		qDebug() << "fileSize=" << fileSize;

		QFile file( pickFile );
//.........这里部分代码省略.........

开发者ID:hongtoushizi，项目名称:wpp-qt，代码行数:101，代码来源:Gallery.cpp

注：本文中的QAndroidJniEnvironment::DeleteLocalRef方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。