DiHola Shaking API for React Native

DiHola Shaking API makes it easy to build fast and reliable ways to communicate between devices, just by shaking them. We provide such a secure and flexible protocol that this technology can be applied in any form of data exchange: Payment processing, file sharing, social networking, verification processes, etc.

Index

1. Installation
2. Usage
3. Methods
4. Error Codes

Installation

$ npm install react-native-dihola-shaking --save

Mostly automatic installation

$ react-native link react-native-dihola-shaking

Note: Manual installation step 4 for both Android and iOS is required.

Manual installation

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-dihola-shaking and add RNDiHolaShaking.xcodeproj
3. In XCode, in the project navigator, select your project. Add libRNDiHolaShaking.a to your project's Build Phases ➜ Link Binary With Libraries
4. Add NSLocationWhenInUseUsageDescription to Info.plist
5. Run your project (Cmd+R)

Android

1. Open up android/app/src/main/java/[...]/MainActivity.java

• Add import com.diholapp.RNDiHolaShakingPackage; to the imports at the top of the file
• Add new RNDiHolaShakingPackage() to the list returned by the getPackages() method

2. Append the following lines to android/settings.gradle:

   include ':react-native-dihola-shaking'
   project(':react-native-dihola-shaking').projectDir = new File(rootProject.projectDir, 	'../node_modules/react-native-dihola-shaking/android')
   

3. Insert the following lines inside the dependencies block in android/app/build.gradle:

     compile project(':react-native-dihola-shaking')
   

4. If you've defined project-wide properties (recommended) in your root build.gradle, this library will detect the presence of the following properties:

   buildscript {...}
   allprojects {...}
   
   /**
    + Project-wide Gradle configuration properties
    */
   ext {
       compileSdkVersion   = 25
       targetSdkVersion    = 25
       buildToolsVersion   = "25.0.2"
       supportLibVersion   = "25.0.1"
       googlePlayServicesVersion = "11.0.0"
   }

   If you do not have project-wide properties defined and have a different play-services version than the one included in this library, use the following instead. But play service version should be 11+ or the library won't work.

   ...
   dependencies {
       ...
       compile(project(':react-native-dihola-shaking')) {
           exclude group: 'com.google.android.gms', module: 'play-services-location'
       }
       compile 'com.google.android.gms:play-services-location:<insert your play service version here>'
   }

Usage

import { ShakingAPI } from 'react-native-dihola-shaking';

ShakingAPI.configure({

    API_KEY: "<API_KEY>",
    user: "<USER_ID>",
    
    onShaking: () => {
      console.log("Shaking event detected");
    },
    
    onSuccess: (result) => {
      (result.length > 0)
        ? console.log("You connected with: " + result)
        : console.log("Couldn't find anyone...");
    },
    
    onError: (error) => {
      console.log(error);
    }
    
}).start();

Here you can find an example.

Methods

Summary

• configure
• start
• stop
• simulate
• setSensibility
• setDistanceFilter
• setTimingFilter
• setKeepSearching
• setLocation

Details

configure()

ShakingAPI.configure(options);

• options:

  Name	Type	Default	Required	Description
  API_KEY	string	--	yes	Get one at www.diholapp.com
  user	string	--	yes	User identifier
  lat	number	Device current value	no	Latitude coordinates
  lng	number	Device current value	no	Longitude coordinates
  sensibility	number	25	no	Shaking sensibility
  distanceFilter	number	100	no	Maximum distance (in meters) between two devices to be eligible for pairing.
  timingFilter	number	2000	no	Maximum time difference (in milliseconds) between two shaking events to be eligible for pairing.
  keepSearching	boolean	false	no	A positive value would allow to keep searching even though if a user has been found. This could allow to pair with multiple devices. The response time will be affected by the timingFilter value.
  vibrate	boolean	true	no	Vibrate on shaking.
  onShaking	function	--	no	Invoked when the shaking event is detected
  onSuccess	function	--	yes	Invoked with a list of paired users
  onError	function	--	yes	Invoked whenever an error is encountered

---

start()

ShakingAPI.start();

Starts listening to shaking events.

---

stop()

ShakingAPI.stop();

Stops listening to shaking events.

---

simulate()

ShakingAPI.simulate();

Simulates the shaking event.

---

setSensibility()

ShakingAPI.setSensibility(sensibility);

Sets the sensibility for the shaking event to be triggered.

Parameters:

Name	Type	Default
sensibility	number	25

---

setDistanceFilter()

ShakingAPI.setDistanceFilter(distanceFilter);

Sets the maximum distance (in meters) between two devices to be eligible for pairing.

Parameters:

Name	Type	Default	Note
distanceFilter	number	100	GPS margin error must be taken into account

---

setTimingFilter()

ShakingAPI.setTimingFilter(timingFilter);

Sets the maximum time difference (in milliseconds) between two shaking events to be eligible for pairing.

Parameters:

Name	Type	Default	Note
timingFilter	number	2000	Value between 100 and 10000

---

setKeepSearching()

ShakingAPI.setKeepSearching(keepSearching);

A positive value would allow to keep searching even though if a user has been found. This could allow to pair with multiple devices. The response time will be affected by the timingFilter value.

Parameters:

Name	Type	Default
keepSearching	boolean	false

---

setLocation()

ShakingAPI.setLocation(latitude, longitude);

Setting the location manually will disable using the device location.

Parameters:

Name	Type	Default
latitude	number	Device current value
longitude	number	Device current value

Error Codes

Name	Description
LOCATION_PERMISSION_ERROR	Location permission has not been accepted
LOCATION_DISABLED	Location is disabled
SENSOR_ERROR	The sensor devices are not available
AUTHENTICATION_ERROR	API key invalid
API_KEY_EXPIRED	API key expired
SERVER_ERROR	Server is not available

Example:

import { ShakingAPI, ShakingCodes } from 'react-native-dihola-shaking';

ShakingAPI.configure({

  ...
      
  onError: (error) => {

    switch(error){
      case ShakingCodes.LOCATION_PERMISSION_ERROR:
        // Do something
        break;
      case ShakingCodes.LOCATION_DISABLED:
        // Do something
        break;
      case ShakingCodes.AUTHENTICATION_ERROR:
        // Do something
        break;
      case ShakingCodes.API_KEY_EXPIRED:
        // Do something
        break;
      case ShakingCodes.SERVER_ERROR:
        // Do something
        break;
      case ShakingCodes.SENSOR_ERROR:
        // Do something
        break;
    }

  }
      
});

Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.