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https://github.com/kwaak/react-native-android-blurryoverlay

A react native android package to show a blurry overlay.
https://github.com/kwaak/react-native-android-blurryoverlay

Last synced: about 1 month ago
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A react native android package to show a blurry overlay.

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README 

        
# Blurry overlay for react-native android



[![npm](https://img.shields.io/npm/v/react-native-android-blurryoverlay.svg)](https://www.npmjs.com/package/react-native-android-blurryoverlay)



# This is very experimental



A react native android module to add a blurry overlay.



![Example](Example/Example.gif?raw=true "Example")



## Setup



* install module



```bash

 npm i --save react-native-android-blurryoverlay

```



* `android/settings.gradle`



```gradle

...

include ':react-native-android-blurryoverlay'

project(':react-native-android-blurryoverlay').projectDir = new File(settingsDir, '../node_modules/react-native-android-blurryoverlay')

```



* `android/app/build.gradle`



```gradle

...

android {

    ...

    defaultConfig {

        ...        

        renderscriptTargetApi 23

        renderscriptSupportModeEnabled true

    }    

    ...

}

...

dependencies {

    ...

    compile project(':react-native-android-blurryoverlay')

}

```



* register module (in MainActivity.java)



```java

import com.kwaak.react.BlurryOverlayPackage;  // <--- import



public class MainActivity extends Activity implements DefaultHardwareBackBtnHandler {



  ......

  private static Activity mActivity = null;



  @Override

  protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);

    mReactRootView = new ReactRootView(this);



    mActivity = this;

    mReactInstanceManager = ReactInstanceManager.builder()

      .setApplication(getApplication())

      .setBundleAssetName("index.android.bundle")

      .setJSMainModuleName("index.android")

      .addPackage(new MainReactPackage())

      .addPackage(new BlurryOverlayPackage(this))      // <------- add package, the 'this' is super important

      .setUseDeveloperSupport(BuildConfig.DEBUG)

      .setInitialLifecycleState(LifecycleState.RESUMED)

      .build();



    mReactRootView.startReactApplication(mReactInstanceManager, "ExampleRN", null);



    setContentView(mReactRootView);

  }



  ......



}

```



## Usage



The Android root view will be 'screenshotted' and rendered blurry in the  view.



```js

/**

 * Sample React Native App

 * https://github.com/facebook/react-native

 */

'use strict';

import React, {

  AppRegistry,

  Component,

  StyleSheet,

  Text,

  View,

  Image

} from 'react-native';



var BlurryOverlay = require('react-native-android-blurryoverlay');



class BlurryTest extends Component {

  constructor() {

    super();

    this.state = {

      renderBlurry: false

    }

  }

  componentDidMount() {

    setTimeout(() => {

      this.setState({ renderBlurry: true })

    });

  }

  render() {

    var overlay = (this.state.renderBlurry) ?  : ;

    return (

      

        

        

          Welcome to React Native!

        

        

          To get started, edit index.android.js

        

        

          Shake or press menu button for dev menu

        

        {overlay}

      

    );

  }

}



const styles = StyleSheet.create({

  container: {

    flex: 1,

    justifyContent: 'center',

    alignItems: 'center',

  },

  welcome: {

    fontSize: 20,

    textAlign: 'center',

    margin: 10,

  },

  instructions: {

    textAlign: 'center',

    color: '#333333',

    marginBottom: 5,

  },

});



AppRegistry.registerComponent('BlurryTest', () => BlurryTest);



```