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Dave Smith's Android Recipes: A Problem-Solution Approach for Android 5.0 PDF

By Dave Smith

ISBN-10: 1484204751

ISBN-13: 9781484204757

ISBN-10: 148420476X

ISBN-13: 9781484204764

Android Recipes, Fourth version offers greater than a hundred down-to-earth code recipes, and courses you step by step via quite a lot of helpful themes utilizing whole and real-world operating code examples. This booklet is up-to-date to incorporate the Android 5.0 SDK, in addition to prior releases.

Instead of summary descriptions of advanced innovations, in Android Recipes, you will find stay code examples. if you begin a brand new undertaking you could think about copying and pasting the code and configuration documents from this publication after which editing them in your personal customization needs.

Crammed with insightful guideline and worthy examples, this fourth variation of Android Recipes is your consultant to writing apps for considered one of today’s most well-liked cellular systems. It bargains pragmatic suggestion that can assist you get the activity performed fast and good. this may prevent loads of paintings over making a venture from scratch!

Android is still one of many prime cellular OS and improvement systems riding cutting-edge cellular concepts and the apps atmosphere. Android looks complicated, yet deals various geared up improvement kits to these getting into Android with differing programming language ability sets.

What you’ll learn

  • Code for Android smartphones and tablets
  • Use exterior libraries to save lots of time and effort
  • Boost app functionality through the use of the Android NDK and RenderScript
  • Design apps for functionality, responsiveness, and seamlessness
  • Send information among units and different exterior hardware
  • Persist software information and percentage it among applications
  • Capture and play again a number of gadget media items
  • Communicate with internet services
  • Get the main from your person interface

Who this ebook is for

This ebook is a convenient reference for all Android app builders.

Table of Contents

1. Layouts and Views

2. person Interaction

3. Communications and Networking

4. Interacting with equipment and Media

5. Persisting Data

6. Interacting with the System

7. pix and Drawing

8. operating with Android NDK and Renderscript

Show description

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Additional resources for Android Recipes: A Problem-Solution Approach for Android 5.0

Sample text

The accessor functions are added as a convenience to later switch the button contents. These functions are also tasked with switching between text and image mode if the content change warrants it. widget packages, we must use the fully qualified name when it is used in an XML layout. Listings 1-47 and 1-48 show an example activity displaying the custom widget. CHAPTER 1: Layouts and Views 59 Listing 1-47. TextImageButton android:layout_width="match_parent" android:layout_height="wrap_content" android:src="@drawable/ic_launcher" /> Listing 1-48.

How It Works ViewGroup (and its subclasses LinearLayout, RelativeLayout, and so on) gives you the tools to make this simple by assisting you with component placement, so you can be more concerned with the added functionality. TextImageButton Let’s create an example by making a widget that the Android SDK does not have natively: a button containing either an image or text as its content. To do this, we are going to create the TextImageButton class, which is an extension of FrameLayout. It will contain a TextView to handle text content as well as an ImageView for image content (see Listing 1-46).

Com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:gravity="center_horizontal" android:orientation="vertical" >