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1. Overview

SignatureView is an open source Android library which allow developers to produce pen and paper like effect for creating signatures on Android.

1.1 Play Store Demo App

Click below link to download demo app from Play store

Android app on Google Play

SignatureView Demo App image

SignatureView Demo App image

1.2 Features

  1. Smooth signatures
  2. Auto handling of stroke thickness on the basis of velocity
  3. Get signature as bitmap
  4. Change stroke color and background color
  5. Enable/Disable signature on canvas

See example code (SignatureView-Example) from repository for details.

2 Getting Started Using the Library

2.1 Setup

Add the following to your build.gradle:

  repositories {
        jcenter()
  }

repositories { maven { url 'https://dl.bintray.com/zahid/maven/' } }

  dependencies {
      compile 'com.kyanogen.signatureview:signature-view:1.1@aar'
  }

2.2 How to use view in xml layout

    <com.kyanogen.signatureview.SignatureView
            xmlns:sign="http://schemas.android.com/apk/res-auto"
            android:id="@+id/signature_view"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            sign:penSize="5dp"
            sign:backgroundColor="#ffffff"
            sign:penColor="#000000"
            sign:enableSignature="true"/>
  • First add Android XML namespace: xmlns:sign="http://schemas.android.com/apk/res-auto"
  • sign:penSize = set pen stroke size; default value is 3dp
  • sign:backgroundColor = set background color; default value is #FFFFFF
  • sign:penColor = set pen stroke color; default value is #4169e1
  • sign:enableSignature = enable/disable drawing signature on view

2.3 Other functions

    SignatureView signatureView = (SignatureView) findViewById(R.id.signature_view);
    .
    .
    .

Clear screen

    signatureView.clearCanvas();

Is Bitmap Empty

    signatureView.isBitmapEmpty()

Get SignatureView as bitmap

    Bitmap bitmap = signatureView.getSignatureBitmap();

3. Developed by

Syed Zahid for Kyanogen

4. License

Copyright 2015-2017 Kyanogen

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.