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VectorIntegerView

VectorIntegerView (viv) is custom view to display integers on Android via great animations minSdkVersion 21.

Paths for vector drawables drawables are taken here.

Showcase video

Demo APK

Article on Habr.com

art

Customizing

VectorIntegerView has following XML-attributes:

  • viv_vector_integer initial integer to show (0 by default).
  • viv_digit_color color of integer (black by default).

Other properties may be configured by overriding resourses from library:

(those will be applied to all VectorIntegerView in app, for example see demo-app)

  • @integer/viv_animation_duration defines duration of animation (400ms by default).
  • @dimen/viv_digit_size defines size of one digit (24dp by default).
  • @dimen/viv_digit_translateX applied to all avd-digits, to center them horizontally.
  • @dimen/viv_digit_translateY applied to all avd-digits, to center them vertically.
  • @dimen/viv_digit_strokewidth applied to all avd-digits.
  • @dimen/viv_digit_margin_horizontal applied to all digit-views (-3dp by default). This is needed to make horizontal spaces between digits smaller, because avd-digits are square.

In code

XML

<com.qwert2603.vector_integer_view.VectorIntegerView
    android:id="@+id/vectorIntegerView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_margin="16dp"
    app:viv_digit_color="#ff8000"
    app:viv_vector_integer="14" />

Java / Kotlin

Digit can be set also via code as BigInteger as well as digit color:

final VectorIntegerView vectorIntegerView = findViewById(R.id.vectorIntegerView);
vectorIntegerView.setInteger(
        vectorIntegerView.getInteger().add(BigInteger.ONE),
        /* animated = */ true
);
vectorIntegerView.setDigitColor(getColor(R.color.colorAccent));

Also there is overloaded function that allows set integer as long:

vectorIntegerView.setInteger(1918L, false);

For example see demo-app.

Under the hood

VectorIntegerView is implemented by RecyclerView and each digit is ImageView with <animated-selector> drawable.

Animation are controlled by custom RecyclerView's item animator: DigitItemAnimator.

When animated each digit stays on it's own position. This is done via DiffUtil in DigitAdapter.

Download

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

dependencies {
        implementation 'com.github.qwert2603:VectorIntegerView:x.y.z'
}