Extended Android Tab Layout with animated indicators that have continuous feedback.
# Dachshund Tab Layout
[![](https://img.shields.io/badge/minSDK-15-brightgreen.svg)](https://developer.android.com/training/basics/supporting-devices/platforms.html)
[![](https://jitpack.io/v/Andy671/Dachshund-Tab-Layout.svg)](https://jitpack.io/#Andy671/Dachshund-Tab-Layout)
[![License: MIT](https://img.shields.io/badge/License-MIT-blue.svg)](https://opensource.org/licenses/MIT)

# ![Logo](https://raw.githubusercontent.com/Andy671/Dachshund-Tab-Layout/master/dachshund_logo.png)

## Introduction
Boosted Android Tab Layout with custom animated indicators including "Dachshund" animation inspired by [this](https://material.uplabs.com/posts/tab-interaction).

## Sample
![](http://i.giphy.com/1VVYHwT4OFf6U.gif)

## Available Animated Indicators
| Indicator         	|  Example | Custom behavior |
|--------------------- 	|--------------------------------| ----- |
| DachshundIndicator 	| ![](http://i.giphy.com/115nZIzHqsDpcI.gif) | |
| PointMoveIndicator	|![](http://i.giphy.com/yK9y4NcPH7wNa.gif)  | setInterpolator(TimeInterpolator interpolator) |
| LineMoveIndicator 	| ![](http://i.giphy.com/rzvsTmlUOod0I.gif) | setEdgeRadius(int edgeRadius)|
| PointFadeIndicator	| ![](http://i.giphy.com/nQZYOyfYH7gJy.gif)  | |
| LineFadeIndicator 	| ![](http://i.giphy.com/PHUmWmrM0O7YI.gif) | setEdgeRadius(int edgeRadius)|

###

## Installation

### Step 1
Add the JitPack repository to your build file
```gradle
	allprojects {
		repositories {
			...
			maven { url 'https://jitpack.io' }
		}
	}
```

### Step 2
Add the dependency
```gradle
	dependencies {
		compile 'com.github.Andy671:Dachshund-Tab-Layout:v0.3.3'
	}
```

# Usage
DachshundTabLayout is a subclass of TabLayout, so usage is pretty similar. The most of the original methods should work without any problems. See sample and source code for more info.

Add DachshundTabLayout to xml (after the Toolbar in the AppBarLayout), if you have TabLayout simply replace it:
```xml
 <android.support.design.widget.AppBarLayout
 ...
	<android.support.v7.widget.Toolbar           
	.../>
	<com.kekstudio.dachshundtablayout.DachshundTabLayout
		android:id="@+id/tab_layout"
		android:layout_width="match_parent"
		android:layout_height="wrap_content"/>
```

Setup it with a ViewPager:
```java
	DachshundTabLayout tabLayout = (DachshundTabLayout) findViewById(R.id.tab_layout);
	tabLayout.setupWithViewPager(yourViewPager);
```

If you want to change animated indicator (see **Available Animated Indicators**):
```java
	//AvailableAnimatedIndicator - change it with available animated indicator

	AvailableAnimatedIndicator indicator = new AvailableAnimatedIndicator(tabLayout);
	tabLayout.setAnimatedIndicator(indicator);
```

## Center align
In **v0.3.2** I've added **ddCenterAlign** parameter. You can use it when you want to center the tabs in **scrollable** tabMode.
Working behavior from [Stackoverflow](https://stackoverflow.com/questions/33191794/android-tablayout-with-active-tab-always-at-center-just-like-in-play-newsstand) question.
```xml
<com.kekstudio.dachshundtablayout.DachshundTabLayout
		...
		custom:tabMode="scrollable"
		custom:ddCenterAlign="true"/>
```

## Creating custom AnimatedIndicator
If you want to create your own custom AnimatedIndicator - you can implement AnimatedIndicatorInterface and if you want to use animators - AnimatorUpdateListener (See JavaDoc of AnimatedIndicatorInterface for more info):
```java
public class CustomIndicator implements AnimatedIndicatorInterface, ValueAnimator.AnimatorUpdateListener {

    private DachshundTabLayout dachshundTabLayout;

    public CustomIndicator(DachshundTabLayout dachshundTabLayout){
        this.dachshundTabLayout = dachshundTabLayout;

    	//here set-up your Animators, Paints etc.
    }

    @Override
    public void onAnimationUpdate(ValueAnimator animator) {
    	// when animator updates - invalidate your canvas, and draw what you want.
    }

    @Override
    public void setSelectedTabIndicatorColor(@ColorInt int color) {
        // customization of color
    }

    @Override
    public void setSelectedTabIndicatorHeight(int height) {
        // customization of height
    }

    @Override
    public void setIntValues(int startXLeft, int endXLeft,
                             int startXCenter, int endXCenter,
                             int startXRight, int endXRight){
        // X-positions of the target and current tabs
    }

    @Override
    public void setCurrentPlayTime(long currentPlayTime) {
        // current play time of the animation
    }

    @Override
    public void draw(Canvas canvas) {
        //Make your draw calls here
    }

    @Override
    public long getDuration() {
        return DEFAULT_DURATION;
    }
}
```


## XML Attributes
| Attribute        	| Type                | Default     |
| ----------------------|:-------------------:| :-----------|
| ddIndicatorHeight   	| dimension           | 6dp 	    |
| ddIndicatorColor    	| color               | Color.WHITE |
| ddAnimatedIndicator 	| enum [dachshund, pointMove, lineMove, pointFade, lineFade] | dachshund |

## Contribution
- Feel free to fork the repo, make pull requests or fix existing bug
- Feel free to open issues if you find some bug or unexpected behaviour

