Android App development: Tabbed Activities

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On February 2, 2011

Some times we want to wrap multiple views in a single window and navigate throught them with a Tab Container. this can be done in Android using TabHost control There are two ways to use a TabHost application in Android: Using the TabHost to navigate through multiple views within the same activity. Using the TabHost […]

Android App Development: Activity Life Cycle

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On January 26, 2011

The activity is the core of an android application. Each application can have one or more activities. In this post we are going to explore the activity’s life cycle and understand the event handler of each stage through the activity’s life cycle. Activities in the system are managed in an activity stack (Last in Last […]

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Android App Development – Using Android resources part 2: Image, Color, Arrays and Dimensions Resources

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On January 12, 2011

Image Resources: Android provides us with the ability to use image resources in our applications. We can put image files in res/drawable directory and access them from the xml layout or by the generated ID from R.java class file. You can use image files of the following formats: PNG JPEG GIF we have three drawable […]

Android App Development – Using Android resources part 1: String Resources

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On January 5, 2011

Resources in Android are files stored under the res directory of your project. Resources can be physical files (Audio, video, images, text, etc…) or xml files that declare some values to use in your application. Why use Resources: The resources are bound to the application in a way that you can change them without needing […]

Android App Development- Controls Part Four: Spinner and GridView

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On December 29, 2010

In this tutorial we are going to cover a couple more Android selection controls: the Spinner and the GridView. The Spinner The Spinner control is similar to the ComboBox in C#. It displays a list to select from in a popup window so it may be a better choice over ListView if you have a […]

Android App Development-Controls Part Two: Android Button Controls

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On December 15, 2010

In last week’s Android App Development tutorial I covered Android UI and Text Controls. This week I am going to cover Android Button Controls. Android offers three types of button controls: The Basic Button. Image Button. Toggle Button. The basic Button: The standard Android button is a subclass of the TextView class so it inherits […]

Android App Development-Controls Part One: Introduction to UI in Android and Text Controls

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On December 8, 2010

Layouts in Android are constructed from two objects: View and ViewGroup. The View class is the base class for many widgets sub classes such as TextView and Button classes. The ViewGroup is a view that conatains other views. The Viewgroup class is the base class for many layouts in Android. The UI Hierarchy is described in […]

Android App Development – Layouts Part Three: Frame Layout and Scroll View

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On December 1, 2010

In part 3 of my tutorials on layouts for Android app development I am going to cover frame layout and scroll view. Frame Layout: Frame layout is used to display a single view at a time. The view can contain many widgets but only one will appear at a time. for example we have two […]

Android App Development – Layouts Part Two: Table and Absolute Layouts

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On November 24, 2010

Table Layout: Organizing widgets in a table is a famous approach in HTML design where you construct a table of a number of rows and cells and distribute the controls over the cells to achieve a consistent look for your UI. Android provides a similar technique. In android you define the number of rows by […]

Android App Development – Layouts Part One: Linear and Relative Layouts

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On November 18, 2010

The way we construct the user interface in Android is pretty interesting. You can construct the UI widgets programmatically. But Android presents a decent way to construct the UI which is XML-based layouts. The layout of an activity can be constructed by a XML file. These files are considered resources as they reside in res/layout folder. […]