Nice and simple customizable implementation of Google style up/down expand arrow.
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README.md

Android-ExpandIcon

Android Arsenal JitPack API

Nice and simple customizable implementation of Google style up/down arrow.

image

Another nice example of using this library: Pixel Slide by hearsilent

Compatibility

This library is compatible from API 15 (Android 4.0.3).

Download

Add it in your root build.gradle at the end of repositories:

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

Add the dependency

dependencies {
    compile 'com.github.zagum:Android-ExpandIcon:1.2.1'
}

Usage

Default implementation:

    <com.github.zagum.expandicon.ExpandIconView
        android:layout_width="24dp"
        android:layout_height="24dp"/>

Fully customized implementation:

    <com.github.zagum.expandicon.ExpandIconView
        android:layout_width="48dp"
        android:layout_height="48dp"
        android:layout_gravity="center_horizontal"
        android:layout_marginTop="56dp"
        app:eiv_animationDuration="300"
        app:eiv_color="#000"
        app:eiv_colorLess="#f00"
        app:eiv_colorMore="#00f"
        app:eiv_colorIntermediate="#0f0"
        app:eiv_roundedCorners="false"
        app:eiv_switchColor="true"
        app:eiv_padding="8dp"/>

Public methods:

    expandIconView.switchState();
    
    expandIconView.setState(ExpandIconView.LESS, true);
    
    expandIconView.setFraction(.3f, true);
    
    expandIconView.setAnimationDuration(2000);

See sample project for more information.

License

Copyright 2016 Evgenii Zagumennyi

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.