TimelineView

A customizable and easy-to-use Timeline View library for Android

Can be used as a standalone view or as a RecyclerView decorator

Previews

Automatically adapts to the item height and supports expand animations	View type	Preview	View type	Preview	View type	Preview
	first		middle		checked
	last		spacer		dashed

Setup

1. Add Jitpack to your root build.gradle

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

2. Add the dependency

dependencies {
    implementation 'com.github.lriccardo:TimelineView:1.1.2'
}

Usage

RecyclerView Decorator

recyclerView.addItemDecoration(
    TimelineDecorator(
        indicatorSize = 24f,
        lineWidth = 15f,
        padding = 48f,
        position = TimelineDecorator.Position.Left,
        indicatorColor = Color.RED,
        lineColor = Color.RED
    )
)

• Customization

  You can provide a custom drawable for the indicators using indicatorDrawable or indicatorDrawableRes (indicatorDrawable overrides indicatorDrawableRes), if both are null a circle will be drawn (using the other customization parameters).

  If you pass a drawable reference (indicatorDrawableRes), ContextCompat.getDrawable() will be used internally.

  Field	Accepted values	Default
  indicatorStyle	IndicatorStyle (Filled | Empty | Checked)	Filled
  indicatorDrawable	Drawable	null
  indicatorDrawableRes	@DrawableRes Int	null
  indicatorSize	Float	24f
  indicatorYPosition	Percentage (0.0f - 1.0f)	0.5f
  checkedIndicatorSize	Float	TimelineView default value
  checkedIndicatorStrokeWidth	Float	4dp
  lineStyle	Normal (Normal | Dashed)	TimelineView default value
  linePadding	Float	TimelineView default value
  lineDashLength	Float	TimelineView default value
  lineDashGap	Float	TimelineView default value
  lineWidth	Float	TimelineView default value
  padding	Float	16dp
  position	Position (Left | Right)	Left
  indicatorColor	@ColorInt	TimelineView default value
  lineColor	@ColorInt	TimelineView default value

• Advanced customization

  If your RecyclerView.Adapter implements TimelineAdapter you can customize how each item of your list is drawn. Implementing one or more of these methods, allows you to use the position argument to return a different customization for some of your items.

  interface TimelineAdapter {
      fun getTimelineViewType(position: Int): TimelineView.ViewType?
      fun getIndicatorDrawable(position: Int): Drawable?
      @DrawableRes fun getIndicatorDrawableRes(position: Int): Int?
      fun getIndicatorStyle(position: Int): TimelineView.IndicatorStyle?
      fun getIndicatorColor(position: Int): Int?
      fun getLineColor(position: Int): Int?
      fun getLineStyle(position: Int): TimelineView.LineStyle?
      fun getLinePadding(position: Int): Float?
  }

Standalone view

<com.lriccardo.timelineview.TimelineView
    android:layout_width="wrap_content"
    android:layout_height="match_parent"
    app:timeline_item_type="first"
    app:indicator_size="12dp"
    app:line_width="8dp"
    app:indicator_color="@color/teal_700"
    app:line_color="@color/teal_700" />

• Customization

  Attribute	Accepted values	Default
  app:timeline_item_type	first | middle | last | spacer	first
  app:indicator_style	filled | empty | checked	filled
  app:indicator_drawable	Drawable	null
  app:indicator_size	Dimension	12dp
  app:indicator_color	Color	Color.RED
  app:indicator_y_position	Percentage (0.0 - 1.0)	0.5f
  app:checked_indicator_size	Dimension	6dp
  app:checked_indicator_stroke_width	Dimension	4dp
  app:line_style	normal | dashed	normal
  app:line_width	Dimension	8dp
  app:line_color	Color	Color.RED
  app:line_dash_length	Dimension	18
  app:line_dash_gap	Dimension	12

License

Copyright 2022 Riccardo Lattarulo

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.