The AA Signature View is a versatile iOS library that allows users to capture and draw signatures on their devices. It provides an easy-to-use interface for capturing, saving, and exporting signature images.


To use AA Signature View in your iOS application, follow these steps:

  1. Install AA Signature View using CocoaPods by adding the following line to your Podfile:
  2. pod 'AASignatureView'
  3. Run pod install command in your terminal to install the pod.
  4. Import AA Signature View into your project:
  5. #import <AASignatureView/AASignatureView.h>


1. Creating an Instance of AA Signature View

To begin using AA Signature View, create an instance of it in your view controller.

// Swift
let signatureView = AASignatureView(frame: CGRect(x: 0, y: 0, width: 300, height: 200))

// Objective-C
AASignatureView *signatureView = [[AASignatureView alloc] initWithFrame:CGRectMake(0, 0, 300, 200)];

2. Customizing Signature View

You can customize the appearance and behavior of the signature view by modifying its properties:

// Set background color
signatureView.backgroundColor = UIColor.white

// Set stroke color and thickness
signatureView.strokeColor = UIColor.black
signatureView.strokeWidth = 2.0

3. Managing User Interaction

You can enable or disable user interaction with the signature view:

// Enable user interaction
signatureView.isUserInteractionEnabled = true

// Disable user interaction
signatureView.isUserInteractionEnabled = false

4. Capturing Signature

You can capture the user’s signature as an image for further processing or displaying:

// Get signature image
let signatureImage = signatureView.getSignatureImage()

// Save signature image to photo library
UIImageWriteToSavedPhotosAlbum(signatureImage, self, #selector(image(_:didFinishSavingWithError:contextInfo:)), nil)


AA Signature View provides several customization options to tailor the signature view to your application’s needs:

1. Stroke Color and Thickness

You can customize the stroke color and thickness of the signature view using the following properties:

  • strokeColor: The color of the stroke used for drawing the signature. Default is black.
  • strokeWidth: The thickness of the stroke used for drawing the signature. Default is 2.0.

2. Background Color

You can set the background color of the signature view using the following property:

  • backgroundColor: The background color of the signature view. Default is white.

3. Limiting Signature Area

You can limit the drawing area to a specific region of the signature view:

  • shouldCropSignature: When set to true, it crops the signature image to remove empty space around the drawn signature. Default is true.
  • cropSignaturePadding: The padding around the signature image when cropping. Default is 10.0.
  • cropLineWidth: The width of the crop line border. Default is 2.0.
  • cropLineColor: The color of the crop line border. Default is black.


The AA Signature View is a powerful library for capturing and drawing signatures in iOS applications. It provides a simple interface for creating, customizing, and exporting signature images. Try it out in your next project!