Android camera widget aplication

[slavisac]

Hello
i trying to get photos from camera on android but no success.
for now i can open camera with jnl and take photo but photo not stored on phone
i use this class to open camera

void radni::on_pushButton_3_clicked()
{
QAndroidJniObject ACTION_SET_TIMER = QAndroidJniObject::getStaticObjectField("android/provider/MediaStore","ACTION_IMAGE_CAPTURE", "Ljava/lang/String;");
QAndroidJniObject intent("android/content/Intent","(Ljava/lang/String;)V",ACTION_SET_TIMER.object());
QAndroidJniObject filename=QAndroidJniObject::fromString("coleeeeee1.jpg");
QAndroidJniObject file("java/io/File","(Ljava/lang/String;)V",filename.object<jstring>());
QAndroidJniObject uri = QAndroidJniObject::callStaticObjectMethod("android/net/Uri","fromFile", "(Ljava/io/File;)Landroid/net/Uri;", file.object());

                   QAndroidJniObject uristr=uri.callObjectMethod("toString", "()Ljava/lang/String;");

                    QAndroidJniObject key=QAndroidJniObject::fromString("MediaStore.EXTRA_OUTPUT");
               //     intent.putExtra(MediaStore.EXTRA_OUTPUT, file);

          intent.callObjectMethod("putExtra","(Ljava/lang/String;Ljava/lang/String;)Landroid/content/Intent;",key.object(), uristr.object());

          QAndroidJniObject activity = QtAndroid::androidActivity();

          QAndroidJniObject packageManager = activity.callObjectMethod("getPackageManager","()Landroid/content/pm/PackageManager;");
          QAndroidJniObject componentName = intent.callObjectMethod("resolveActivity","(Landroid/content/pm/PackageManager;)Landroid/content/ComponentName;",packageManager.object());
          if (componentName.isValid()) {

              QtAndroid::startActivity(intent, 42);
          } else {
              qWarning() << "Unable to resolve activity";
          }

}

my knowegle of jnl is so poor

[Pablo J. Rogina]

@slavisac what if you try the QML camera example?

[slavisac]

@Pablo-J.-Rogina how to implement with qt widget app

[jsulm]

@slavisac https://doc.qt.io/qt-5/qcamera.html

[slavisac]

@jsulm
Qcamera viewfinder not working on android

[jsulm]

@slavisac Then I guess you can't do it with Qt widgets

[J.Hilk]

@slavisac

create a qml file with a Camera component, make sure to give it some object name eg: objectName: "camera"

Load the qml file via QQuickWidget

do the following inside your c++ class to get access to the QML Camera component

ui->quickWidget->setSource(QUrl(QStringLiteral("qrc:/Camera/FrontCam.qml")));
    camera = ui->quickWidget->rootObject()->findChild<QObject*>("camera")->property("mediaObject").value<QCamera*>();
//camera is a QCamera  pointer

Example taken from one of my projects

[slavisac]

@jsulm
i use jnl code to open camera and see, can shot but could not save photo

[slavisac]

@J.Hilk said in Android camera widget aplication:

objectName: "camera"

hi

i have error :
C:\Users\cole\Documents\R-Nalog\kamera.cpp:13: error: error: undefined reference to 'QQuickWidget::setSource(QUrl const&)'

[J.Hilk]

@slavisac
did you add
QT += quickwidgets to your project file ?

and clean & rerun qmake afterwards?

[slavisac]

@J.Hilk
now is ok but QQuickWidget dont show on android (no rendering image)
Thank you

[Pablo J. Rogina]

@slavisac said in Android camera widget aplication:

qt widget app

could you elaborate about this requirement? Why you cannot use QML approach?

[slavisac]

@Pablo-J.-Rogina

i finished app just need implement camera to take photos