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Android Application Development Cookbook

You're reading from   Android Application Development Cookbook Over 100 recipes to help you solve the most common problems faced by Android Developers today

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Product type Paperback
Published in Mar 2016
Publisher
ISBN-13 9781785886195
Length 428 pages
Edition 2nd Edition
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Authors (2):
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Rick Boyer Rick Boyer
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Rick Boyer
Kyle Mew Kyle Mew
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Kyle Mew
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Toc

Table of Contents (17) Chapters Close

Preface 1. Activities FREE CHAPTER 2. Layouts 3. Views, Widgets, and Styles 4. Menus 5. Exploring Fragments, AppWidgets, and the System UI 6. Working with Data 7. Alerts and Notifications 8. Using the Touchscreen and Sensors 9. Graphics and Animation 10. A First Look at OpenGL ES 11. Multimedia 12. Telephony, Networks, and the Web 13. Getting Location and Using Geofencing 14. Getting your app ready for the Play Store 15. The Backend as a Service Options Index

Using LinearLayout

Another common layout option is the LinearLayout, which arranges the child Views in a single column or single row, depending on the orientation specified. The default orientation (if not specified) is vertical, which aligns the Views in a single column.

The LinearLayout has a key feature not offered in the RelativeLayout—the weight attribute. We can specify a layout_weight parameter when defining a View to allow the View to dynamically size based on the available space. Options include having a View fill all the remaining space (if a View has a higher weight), having multiple Views fit within the given space (if all have the same weight), or spacing the Views proportionally by their weight.

We will create a LinearLayout with three EditText Views to demonstrate how the weight attribute can be used. For this example, we will use three EditText Views—one to enter a To Address parameter, another to enter a Subject, and the third to enter a Message. The To and...

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