react-native-scratch

Getting started

$ npm install react-native-scratch --save

$3

$ react-native link react-native-scratch

$3

#### iOS

1. In XCode, in the project navigator, right click Libraries ➜ Add Files to [your project's name]
2. Go to node_modules ➜ react-native-scratch and add RNScratch.xcodeproj
3. In XCode, in the project navigator, select your project. Add libRNScratch.a to your project's Build Phases ➜ Link Binary With Libraries
4. Run your project (Cmd+R)<

#### Android

1. Open up android/app/src/main/java/[...]/MainActivity.java
- Add import com.como.RNTScratchView.ScratchViewPackage; to the imports at the top of the file
- Add new ScratchViewPackage() to the list returned by the getPackages() method
2. Append the following lines to android/settings.gradle:
``
include ':react-native-scratch'
project(':react-native-scratch').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-scratch/android')
`
3. Insert the following lines inside the dependencies block in android/app/build.gradle:
`
implementation project(':react-native-scratch')
`

Usage

The ScratchView will fill its containing view and cover all other content untill you scratch it
Just put it as the last component in your view
`javascript
import React, { Component } from 'react';
import { View } from 'react-native';
import ScratchView from 'react-native-scratch'

class MyView extends Component {

onImageLoadFinished = ({ id, success }) => {
// Do something
}

onScratchProgressChanged = ({ value, id }) => {
// Do domething like showing the progress to the user
}

onScratchDone = ({ isScratchDone, id }) => {
// Do something
}

onScratchTouchStateChanged = ({ id, touchState }) => {
// Example: change a state value to stop a containing
// FlatList from scrolling while scratching
this.setState({ scrollEnabled: !touchState });
}

render() {
return (
// will be covered by the ScratchView
// will be covered by the ScratchView
id={1} // ScratchView id (Optional)
brushSize={10} // Default is 10% of the smallest dimension (width/height)
threshold={70} // Report full scratch after 70 percentage, change as you see fit. Default is 50
fadeOut={false} // Disable the fade out animation when scratch is done. Default is true
placeholderColor="#AAAAAA" // Scratch color while image is loading (or while image not present)
imageUrl="http://yourUrlToImage.jpg" // A url to your image (Optional)
resourceName="your_image" // An image resource name (without the extension like '.png/jpg etc') in the native bundle of the app (drawble for Android, Images.xcassets in iOS) (Optional)
resizeMode="cover|contain|stretch" // Resize the image to fit or fill the scratch view. Default is stretch
onImageLoadFinished={this.onImageLoadFinished} // Event to indicate that the image has done loading
onTouchStateChanged={this.onTouchStateChangedMethod} // Touch event (to stop a containing FlatList for example)
onScratchProgressChanged={this.onScratchProgressChanged} // Scratch progress event while scratching
onScratchDone={this.onScratchDone} // Scratch is done event
/>}
)
}

export default MyView;
``