Book Image

Sencha Touch Cookbook

By : Ajit Kumar
Book Image

Sencha Touch Cookbook

By: Ajit Kumar

Overview of this book

Sencha touch is a versatile HTML5-based framework for developing mobile web apps that look and feel native on touch screen devices, and with it you can write your code once and deploy it to both iOS and Android saving you both time and money. The Sencha touch cookbook has a comprehensive selection of recipes covering everything from installation right through to HTML5 geo location. The Sencha Touch Cookbook really is your one stop resource for cross platform HTML5 application development. It covers the basics such as setting up an iOS and Android development environment right through to much more complex development issues such as touch gestures, animation, rich media and geo location. Every recipe is practically focused. Maximum action. Minimum theory.
Table of Contents (17 chapters)
Sencha Touch Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Grouping the pies


Another useful feature is while you are analyzing your data using the pie chart, you may want to group multiple pies and get additional information; for example, what is the cumulative expense for the House Rent and Petrol. In this recipe, we will see how to put this in place.

Getting ready

Make sure that you have set up your development environment by following the recipes outlined in Chapter 1.

How to do it...

Carry out the following steps:

  1. Edit the ch07_09.js file.

  2. Add the following interaction item into it:

    interactions: [{
      type: 'piegrouping',
      listeners: {
        selectionchange: function(interaction, selectedItems) {
          var msg = selectedItems.length + ' items grouped!\nItems are: ';
          Ext.each(selectedItems, function(item, idx, allItems) {
            msg += ' - ' + item.storeItem.data.name;
          });
          
          Ext.Msg.alert('INFO', msg);
        }
      }
    }]
  3. Save the changes.

  4. Deploy and access the application from the browser. You may also run it using the emulator.

  5. Tap a...