android.graphics.Matrix is the class that be used to process images in android. This article will show you examples of how to use android.graphics.Matrix to rotate, scale, skew and translate bitmap images in android.
Android ImageView Matrix Rotate, Scale, Skew, Translate Example Read More »
android.widget.ImageView is android image manipulation class. It can be used to load images, show images, and edit images. This article will introduce this class to you and show you an example to demonstrate it’s functions.
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Android provides three clock widgets that you can use to implement a clock. They are android.widget.AnalogClock, android.widget.DigitalClock and android.widget.TextClock. The AnalogClock and DigitalClock class have been deprecated since Android SDK version 1.7, but they can still be used. TextClock class is recommended.
Android Analog, Digital And Text Clock Example Read More »
android.text.style.ReplacementSpan class is a supper span class that you can extend to create your customized span class. You can draw anything as you want in your custom span class, and then use it to replace the specified characters in your textview string.
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The android class android.graphics.Color provides some color constants which can be used directly in an android application. For example, BLACK, WHITE, RED, GREEN, BLUE, YELLOW, CYAN, MAGENTA, GRAY, LTGRAY (light gray), DKGRAY (dark gray). But you may find that it is not enough, sometimes you need more colors. So this article will show you how
How To Define Custom Color Variables In Android Studio Read More »
android.view.View component acts like JPanel in Swing programming. It’s just a rectangular blank area, the android.view.View component doesn’t have any content. For built-in UI components of Android applications, they all inherit the class android.view.Viewand then render the appearance on the blank areas provided by the View component.
Android Custom View And OnTouchListener Example – Move View On Touch Move Read More »
Android applications can be executing or debugging in either virtual device or real device. But it can be executed or debugged in only one device at the same time. This article will show you how to do that.
How To Run / Debug Android App In Android Studio Read More »
Before debugging and testing the android application, you should create an android virtual device ( AVD ) to start a simulator. You can specify special configurations for your AVD, and then start it for debugging and executing applications.
How To Create Android Virtual Device (AVD) In Android Studio Read More »
Activity is a very important component in android application development. It represents a screen which is used to interact with phone user. Commonly there are three important files for creating and use an activity: an XML layout file, a java class file, and AndroidManifest.xml.
How To Add Activity In Android Studio Read More »
This article will show you how to Open, Close, or Save android studio projects. It will also show you how to browse the project folder or file’s physical hard disk directory in android studio.
How To Open, Close, Save Android Studio Project Read More »