https://github.com/mikepenz/Android-Iconics

http://mikepenz.github.io/Android-Iconics

Demo APK

Android-Iconics - Use any icon font, or vector (.svg) as drawable in your application.

Choose your desired fonts:

compile 'com.mikepenz:google-material-typeface:3.0.1.0.original@aar'
compile 'com.mikepenz:material-design-iconic-typeface:2.2.0.2@aar'
compile 'com.mikepenz:fontawesome-typeface:4.7.0.0@aar'
compile 'com.mikepenz:octicons-typeface:3.2.0.2@aar'
compile 'com.mikepenz:meteocons-typeface:1.1.0.2@aar'
compile 'com.mikepenz:community-material-typeface:1.8.36.1@aar'
compile 'com.mikepenz:weather-icons-typeface:2.0.10.2@aar'
compile 'com.mikepenz:typeicons-typeface:2.0.7.2@aar'
compile 'com.mikepenz:entypo-typeface:1.0.0.2@aar'
compile 'com.mikepenz:devicon-typeface:2.0.0.2@aar'
compile 'com.mikepenz:foundation-icons-typeface:3.0.0.2@aar'
compile 'com.mikepenz:ionicons-typeface:2.0.1.2@aar'

https://github.com/chrisbanes/PhotoView

Useage

allprojects {
    repositories {
        maven { url "https://jitpack.io" }
    }
}
dependencies {
    compile 'com.github.chrisbanes:PhotoView:latest.release.here'
}

https://github.com/anton46/Android-StepsView

http://anton46.com/

Usage

compile 'com.anton46:stepsview:0.0.2'

<com.anton46.stepsview.StepsView
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:id="@+id/stepsView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        />

mStepsView.setLabels(steps)
        .setBarColorIndicator(getContext().getResources().getColor(R.color.material_blue_grey_800))
        .setProgressColorIndicator(getContext().getResources().getColor(R.color.orange))
        .setLabelColorIndicator(getContext().getResources().getColor(R.color.orange))
        .setCompletedPosition(0)
        .drawView();

https://github.com/daimajia/AndroidImageSlider

Demo APK

Highly customizable and lightweight library that allows you to create a button with animation effect similar to Twitter's heart animation.

https://github.com/varunest/SparkButton

Android library for better date/time Picker DialogFragments

https://github.com/code-troopers/android-betterpickers

Demo APK

Custom shaped android imageview components

https://github.com/siyamed/android-shape-imageview

Android StackBlur is a library that can perform a blurry effect on a Bitmap based on a gradient or radius, and return the result. The library is based on the code of Mario Klingemann.

https://github.com/kikoso/android-stackblur

Bootstrap style widgets for Android, with Glyph Icons

https://github.com/Bearded-Hen/Android-Bootstrap

The ShowcaseView (SCV) library is designed to highlight and showcase specific parts of apps to the user with a distinctive and attractive overlay. This library is great for pointing out points of interest for users, gestures, or obscure but useful items.

https://github.com/amlcurran/ShowcaseView

Demo APK

Cute view animation collection.

https://github.com/daimajia/AndroidViewAnimations

Demo APK

A small Android library allowing you to have a smooth and customizable horizontal indeterminate ProgressBar.

https://github.com/castorflex/SmoothProgressBar

https://github.com/lopspower/CircularFillableLoaders

Android Floating Action Button based on Material Design specification, yet another implementation of Floating Action Button for Android with lots of features.

https://github.com/Clans/FloatingActionButton

Collection Picker is an Android View library that looks like Foursquare Tastes picker.

https://github.com/anton46/Foursquare-CollectionPicker

Fixed viewport image cropping library for Android with built-in support for Picasso, Glide or Universal Image Loader.

https://github.com/lyft/scissors

Cute library to implement SearchView in a Material Design Approach.

https://github.com/MiguelCatalan/MaterialSearchView

http://miguelcatalan.info/2015/09/23/MaterialSearchView/

http://www.materialdoc.com/search-filter/

a BadeView base on android

https://github.com/AlexLiuSheng/BadgeView

A beautiful, fluid, and customizable dialogs API.

https://github.com/afollestad/material-dialogs

Demo APK

A SplashView injecting to any activity for android.

https://github.com/jkyeo/Android-SplashView

http://jkyeo.com/2016/07/10/SplashView-一行代码解决闪屏页(广告页)-Android-篇