By Dave Smith
Android Recipes, Fourth variation offers greater than a hundred down-to-earth code recipes, and publications you step by step via quite a lot of priceless subject matters utilizing entire and real-world operating code examples. This booklet is up to date to incorporate the Android 5.0 SDK, in addition to previous releases.
Instead of summary descriptions of complicated strategies, in Android Recipes, you will discover stay code examples. for those who commence a brand new undertaking you could give some thought to copying and pasting the code and configuration documents from this publication after which enhancing them to your personal customization needs.
Crammed with insightful guideline and priceless examples, this fourth version of Android Recipes is your advisor to writing apps for one among today’s preferred cellular structures. It bargains pragmatic recommendation 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 structures using modern-day cellular concepts and the apps atmosphere. Android seems complicated, yet bargains a number of geared up improvement kits to these entering Android with differing programming language ability sets.
What youll learn
- Code for Android smartphones and tablets
- Use exterior libraries to save lots of time and effort
- Boost app functionality by utilizing the Android NDK and RenderScript
- Design apps for functionality, responsiveness, and seamlessness
- Send info among units and different exterior hardware
- Persist software info and percentage it among applications
- Capture and play again quite a few equipment media items
- Communicate with net services
- Get the main from your person interface
Who this e-book is for
This ebook is a convenient reference for all Android app builders.
Table of Contents
1. Layouts and Views
2. consumer Interaction
3. Communications and Networking
4. Interacting with gadget and Media
5. Persisting Data
6. Interacting with the System
7. portraits and Drawing
8. operating with Android NDK and Renderscript
Read or Download Android Recipes: A Problem-Solution Approach for Android 5.0 PDF
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Extra resources for Android Recipes: A Problem-Solution Approach for Android 5.0
The remaining two are used when a view is inflated from XML, where the attributes defined in the XML file are passed in as the AttributeSet parameter. Here we use Java’s this() notation to drill the first two constructors down to the one that really does all the work. Building the custom control in this fashion ensures that we can still define this view in XML layouts. Without implementing the attributed constructors, this would not be possible. buttonStyle to the constructor. This defines the style value that should be pulled from the current theme and applied to the view.
Whenever possible, reuse these views instead of inflating new ones to keep the scrolling performance of the list fast and responsive. In this example, we use getItem() to get the current value at that position in the list (our array of strings), and then later we set that value on the TextView for that row. We can also set the images in each row to something significant for the data, although here they are set to the app icon for simplicity. 1-9. Making ListView Section Headers Problem You want to create a list with multiple sections, each with a header at the top.
An application can set a custom animation for each one of the following states: APPEARING: An item that is appearing in the container DISAPPEARING: An item that is disappearing from the container CHANGING: An item that is changing because of a layout change, such as a resize, that doesn’t involve views being added or removed CHANGE_APPEARING: An item changing because of another view appearing CHANGE_DISAPPEARING: An item changing because of another view disappearing How It Works Listings 1-21 and 1-22 illustrate an application that animates changes on a basic LinearLayout.
Android Recipes: A Problem-Solution Approach for Android 5.0 by Dave Smith