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

SignatureView Demo App image

1.2 Features

Smooth signatures
Auto handling of stroke thickness on the basis of velocity
Get signature as bitmap
Change stroke color and background color
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()
  }
  
  dependencies {
      compile 'com.kyanogen.signatureview:signature-view:1.2'
  }

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. Changelog

Click here for the changelog

4. Developed by

Developed by Syed Zahid. You can follow me on Twitter

5. License

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.

luncang/SignatureView