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QT5 Blueprints

You're reading from   QT5 Blueprints Design, build, and deploy cross-platform GUI projects using the amazingly powerful Qt 5 framework

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Product type Paperback
Published in Mar 2015
Publisher
ISBN-13 9781784394615
Length 272 pages
Edition 1st Edition
Languages
Tools
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Author (1):
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Symeon Huang Symeon Huang
Author Profile Icon Symeon Huang
Symeon Huang
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Toc

Table of Contents (12) Chapters Close

Preface 1. Creating Your First Qt Application FREE CHAPTER 2. Building a Beautiful Cross-platform Clock 3. Cooking an RSS Reader with Qt Quick 4. Controlling Camera and Taking Photos 5. Extending Paint Applications with Plugins 6. Getting Wired and Managing Downloads 7. Parsing JSON and XML Documents to Use Online APIs 8. Enabling Your Qt Application to Support Other Languages 9. Deploying Applications on Other Devices 10. Don't Panic When You Encounter These Issues Index

Parsing JSON in QML


Let's rewrite the weather demo in QML. You will find out how easy and elegant it is to write such an application in QML. Since the XML part is already covered in the previous chapter, we'll focus on parsing JSON this time.

First, create a new Qt Quick application project named Weather_QML. Keep the other settings as default, which means we use Qt Quick Controls. Remember to tick the checkbox of the Android kit.

Create a new QML file named Weather.qml to mimic the Weather class in the previous C++ code. This file is pasted here:

import QtQuick 2.3
import QtQuick.Controls 1.2

Rectangle {
  Column {
    anchors.fill: parent
    spacing: 6

    Label {
      id: location
      width: parent.width
      fontSizeMode: Text.Fit
      minimumPointSize: 9
      font.pointSize: 12
    }

    Row {
      spacing: 20
      width: parent.width
      height: parent.height

      Label {
        id: temp
        width: parent.width / 2
        height: parent.height
        fontSizeMode...
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