React Native Camera Roll

UPDATE:
As of react-native 0.19, the CameraRoll module is now available on Android too!

Table of contents

* Example
* Setup
* Usage

Example

Checkout this example of a basic gallery app with infinite scroll:
https://github.com/bamlab/rn-camera-roll/tree/master/example

Setup

First, install the package:
``
npm install rn-camera-roll
`

Then, follow those instructions:

$3

The Camera Roll iOS API is part of react-native.
You have to import node_modules/react-native/Libraries/CameraRoll/RCTCameraRoll.xcodeproj
by following the libraries linking instructions.

$3

#### Update your gradle files

For react-native >= v0.15, this command will do it automatically:
`
react-native link rn-camera-roll
`

For react-native = v0.14
You will have to update them manually:

In android/settings.gradle, add:
`
include ':rn-camera-roll'
project(':rn-camera-roll').projectDir = new File(settingsDir, '../node_modules/rn-camera-roll/android')
`

In android/app/build.gradle add:
`
dependencies {
...
compile project(':rn-camera-roll')
}
`

#### Register the package into your MainActivity
`java
package com.example;

import android.app.Activity;
import android.os.Bundle;
import android.view.KeyEvent;

import com.facebook.react.LifecycleState;
import com.facebook.react.ReactInstanceManager;
import com.facebook.react.ReactRootView;
import com.facebook.react.modules.core.DefaultHardwareBackBtnHandler;
import com.facebook.react.shell.MainReactPackage;
import com.facebook.soloader.SoLoader;

// IMPORT HERE
import fr.bamlab.rncameraroll.CameraRollPackage;
// ---

public class MainActivity extends Activity implements DefaultHardwareBackBtnHandler {

private ReactInstanceManager mReactInstanceManager;
private ReactRootView mReactRootView;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mReactRootView = new ReactRootView(this);

mReactInstanceManager = ReactInstanceManager.builder()
.setApplication(getApplication())
.setBundleAssetName("index.android.bundle")
.setJSMainModuleName("index.android")
.addPackage(new MainReactPackage())

// REGISTER PACKAGE HERE
.addPackage(new CameraRollPackage())
// ---
.setUseDeveloperSupport(BuildConfig.DEBUG)
.setInitialLifecycleState(LifecycleState.RESUMED)
.build();

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

setContentView(mReactRootView);
}

...
`

Usage

You can use the getPhotos API as you would with the iOS API with the after and the first params.
You can use both the promise syntax or the callback syntax.

`javascript
import CameraRoll from 'rn-camera-roll';

onPhotosFetchedSuccess(data) {
const photos = data.edges.map((asset) => {
return asset.node.image;
});
console.log(photos);
/**
On Android, this should log something like:
[
{
"uri": "file:/storage/emulated/0/DCIM/Camera/IMG_20160120_172426830.jpg",
"width":3006,
"height":5344,
"orientation": 90
},
{
"uri": "file:/storage/emulated/0/DCIM/Camera/IMG_20160116_153526816_TOP.jpg",
"width": 5344,
"height": 3006,
"orientation": 0
}
...
]
**/
}

onPhotosFetchError(err) {
// Handle error here
}

fetchPhotos(count = 10, after) {
CameraRoll.getPhotos({
// take the first n photos after given photo uri
first: count,
// after
after: "file:/storage/emulated/0/DCIM/Camera/IMG_20151126_115520477.jpg",
}, this.onPhotosFetchedSuccess.bind(this), this.onPhotosFetchError.bind(this));
}
``