CODEWITHSUNDEEP
qtpopupqml
İbrahim
İbrahim

Reputation: 1021

QML NumberAnimation: setRunning() cannot be used on non-root animation nodes

My code is here:

MyPopup.qml:

import QtQuick 2.0
import QtQuick.Window 2.3
import QtQuick.Controls 2.2

Popup {
  id: popup
  width: 250
  height: 250
  closePolicy: Popup.NoAutoClose
  y: -300

  background: Rectangle {
    anchors.fill: parent
    color: '#3f3f3f'
    opacity: 15
    Text {
      text: 'HELLO WORLD!'
      color: 'white'
      font.pointSize: 20
      anchors.centerIn: parent
    }

    Button {
      anchors.bottom: parent.bottom
      text: 'Close Popup'
      onClicked: popup.close()
    }
  }

  enter: Transition {
    NumberAnimation {
      target: parent
      property: 'y'
      to: (Screen.height / 2) - (height / 2)
      duration: 400
      running: true
    }
  }

  exit: Transition {
    NumberAnimation {
      target: parent
      property: 'y'
      to: -((Screen.height / 2) - (height / 2))
      duration: 400
      running: true
    }
  }
}

I put a button into main.qml. When I click that button, popup.open() is running. I put a button into MyPopup.qml, when I click that button, popup.close() is running. When I clik the buttons, my app is freezing and closing.

I get this warnings: qrc:/MyPopup.qml:31:5: QML NumberAnimation: setRunning() cannot be used on non-root animation nodes.
qrc:/MyPopup.qml:41:5: QML NumberAnimation: setRunning() cannot be used on non-root animation nodes.

Upvotes: 4

Views: 1480

Answers (1)

Bobur
Bobur

Reputation: 575

In documentation, two examples are given and none of them have running property instantiated. Example of enter property:

Popup {
    enter: Transition {
        NumberAnimation { property: "opacity"; from: 0.0; to: 1.0 }
    }
}

And for exit property:

Popup {
    exit: Transition {
        NumberAnimation { property: "opacity"; from: 1.0; to: 0.0 }
    }
}

I tried your code without running: true line and it worked. So when popup.open() or popup.exit() are called, the transitions just run.

Upvotes: 2

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