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Progress Wheel

This is a custom component for Android intended for use instead of a progress bar.

Sample Image Sample Image 2 Sample Image 3 Sample Image 4

A complete walkthrough of how to use this component in your app

XML:
To implement the view in your xml layout do the following:

  1. Add the following to your attrs.xml file (in res/values):
<declare-styleable name="ProgressWheel">   
	<attr name="text" format="string" />   
	<attr name="textColor" format="color" />   
	<attr name="textSize" format="dimension" />   
	<attr name="barColor" format="color" />   
	<attr name="rimColor" format="color" />   
	<attr name="rimWidth" format="dimension" />   
	<attr name="spinSpeed" format="integer" />     
	<attr name="circleColor" format="color" />     
	<attr name="radius" format="dimension" />   
	<attr name="barWidth" format="dimension" />   
	<attr name="barLength" format="dimension" />   
</declare-styleable>

  1. Add the following code to the root view of your layout: xmlns:ProgressWheel="http://schemas.android.com/apk/res/com.visualdenim.schooltraq"

  2. Add the widget code in the appropriate place in your xml file. Here's a sample implementation:

<com.todddavies.components.progressbar.ProgressWheel   
    android:id="@+id/pw_spinner"     
    android:layout_width="200dp"    
    android:layout_height="200dp"   
    android:layout_centerInParent="true"   
    ProgressWheel:text="Authenticating..."    
    ProgressWheel:textColor="#222"   
    ProgressWheel:textSize="14sp"   
    ProgressWheel:rimColor="#330097D6"   
    ProgressWheel:barLength="60dp"    
    ProgressWheel:barColor="#0097D6"   
    ProgressWheel:barWidth="5dp"   
    ProgressWheel:rimWidth="2dp" />

Java:
First you need to either get a ProgressWheel from a layout file, or initalise one. Do this by:

  • ProgressWheel pw = new ProgressWheel(myContext, myAttributes);
  • ProgressWheel pw = (ProgressWheel) findViewById(R.id.pw_spinner);

To spin the progress wheel, you just call .spin() and to stop it spinning, you call .stopSpinning()

Incrementing the progress wheel is slightly more tricky, you call .incrementProgress(). However, this is out of 360,
(because a circle has 360 degrees), and will automatically reset once you get past 360. A percentage display is
automatically displayed.

Using as a library project

Since Android SDK Tools revision 17 (released March 2012), this component can be used as a library project. In this case, you do not need to copy anything into your project's attrs.xml, and you must use the following namespace URI, instead of the above:

xmlns:ProgressWheel="http://schemas.android.com/apk/res-auto"

Otherwise, usage should be the same.

Todd Davies - 2012