CircularView

A special shoutout to @carlossotelo for his suggestions on anti-aliasing solutions

Include in your project

In your root/build.gradle

allprojects {
  repositories {
  ...
  maven { url 'https://jitpack.io' }
  }
}  

In your app/build.gradle

dependencies {
  compile 'com.github.rjsvieira:circularView:1.3.0'
}

Customization

CircleView allows you to customize its default fields for your personal use. The attribute list can be found within the attrs.xml file.

Below is the configuration for the circleView presented on the first gif

<rjsv.circularview.CircleView
  android:id="@+id/circle_view"
  circleview:layout_constraintTop_toTopOf="parent"
  circleview:layout_constraintBottom_toBottomOf="parent"
  circleview:layout_constraintStart_toStartOf="parent"
  circleview:layout_constraintEnd_toEndOf="parent"
  android:layout_width="500dp"
  android:layout_height="500dp"
  circleview:suffixEnabled="true"
  circleview:suffixValue="EUR"
  circleview:arcBorderColor="@color/color_arc"
  circleview:arcColor="@color/color_arc"
  circleview:arcHasBorder="false"
  circleview:arcWidth="15dp"
  circleview:hasIndicator="false"
  circleview:indicatorColor="@color/theme_red_primary"
  circleview:indicatorRadius="6"
  circleview:progressColor="@color/color_progress"
  circleview:progressMaximumValue="10"
  circleview:progressMinimumValue="0"
  circleview:progressStepValue="1"
  circleview:progressStepAsInteger="false"
  circleview:progressWidth="15dp"
  circleview:textColor="@color/sample_green"
  circleview:textEnabled="true"
  circleview:textFont="fonts/Roboto-Bold.ttf"
  circleview:textSize="36sp"/>

Attribute configuration list

Attribute	Type	Description	Default
progressCurrentValue	float	The starting value	0
progressMaximumValue	float	The maximum allowed value of the circle view	100
progressMinimumValue	float	The minimum allowed value of the circle view	0
progressStepValue	float	The step allows the developer to set a constraint for the values the user can choose. If different from 0, the step will be considered and whenever the user moves the progress to a non-integer value, it will round it to its Ceiling or Floor (whichever is closer)	0
progressStepAsInteger	boolean	The step allows the developer to constraint the value to an integer rather than a float	false
progressBarSquared	boolean	If there is no indicator overlapping it, the progress bar can be set as squared or rounded	false
progressWidth	dimension	The width of the progress bar
progressColor	color	The color of the progress bar
suffixEnabled	boolean	Specifies whether a suffix can be added after the progress value. Used to indicate time or currencies, etc	false
suffixValue	string	The string value for the suffix. E.g. "EUR"	false
hasIndicator	boolean	The indicator is a simple small circle that leads the progress bar	false
indicatorColor	color	The indicator's color
indicatorRadius	integer	Specifies the radius, if it exists, of the indicator
arcWidth	dimension	The width of the circle's arc	20
arcColor	color	The color of the circle's arc.
arcHasBorder	boolean	Defines whether the circle's arc has a border. By default, if has exists, has 1.2x the width of the circle's arc
arcBorderColor	color	Specifies the arc's border color if the arc's border exists	false
hasText	boolean	Specifies whether the arc's current progress will be displayed in the center of the circle	true
textSize	dimension	Specifies the text size	72
textColor	color	Specifies the text color
textFont	string	Specifies the custom font attribute	Typeface.DEFAULT
clockwise	boolean	Specifies whether the CircleView takes a clockwise or a counter-clockwise orientation	true
enabled	boolean	Specifies whether the user can interact (changing the progress) with the CircleView or not. Made with the intent of allowing the developer to lock the value and operate it without user interaction	true

CircleView Change Listener

You can keep track of the values when they change as well as the moment when the point tracking starts or stops.

public interface CircleViewChangeListener {

    void onPointsChanged(CircleView circleView, float points);

    void onStartTracking(CircleView circleView);

    void onStopTracking(CircleView circleView);

}

CircleView Animation (Wrapper)

In order to facilitate animations (because yeah, animations are the coolest part of views), the custom CircleViewAnimation wrapper has been added. Configurations are few and easy to implement. Notes :

1. The AnimationListener is bound to the View. Thus said, if the Activity goes to the background, the animation will be briefly paused until it comes back to the foreground.
2. To complement the previous point, the method setTimerOperationOnFinish allows you to specify a Runnable that will run at the end of the duration regardless of the Activity's state

Consider the following example :

CircleView circleView = (CircleView) findViewById(R.id.circle_view);
CircleViewAnimation circleViewAnimation = new CircleViewAnimation(circleView)
 	.setAnimationStyle(AnimationStyle.CONTINUOUS)
    	.setDuration(circleView.getProgressValue())
        .setCustomAnimationListener(new Animation.AnimationListener() {
			@Override
			public void onAnimationStart(Animation animation) {
			    // Animation Starts
			}

			@Override
			public void onAnimationEnd(Animation animation) {
			    // Animation Ends
			}

			@Override
			public void onAnimationRepeat(Animation animation) {

            }
        }).setTimerOperationOnFinish(new Runnable() {
            @Override
            public void run() {
                // Run when the duration reaches 0. Regardless of the AnimationLifecycle or main thread.
                // Runs and triggers on background.
            }
        })
        .setCustomInterpolator(new LinearInterpolator());