add method initDownloader

README.md

@@ -321,6 +321,18 @@ Resumes a pause download
 ### `stop()`
 Stops the download for good and removes the file that was written so far
 
+### `initDownloader(options)`
+
+Init android downloader with options
+
+**options**
+
+An object containing options properties
+
+| Property      | Type                                             | Required | Platforms | Info                                                                                                                                                                             |
+| ------------- | ------------------------------------------------ | :------: | :-------: | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| `type`        | String                                           |          | Android    | Downloader type: 'parallel' or 'sequential'. Default: 'sequential'. 'parallel' seems to cause lots of ANRs, so be careful |
+
 ## Constants
 
 ### directories

__mocks__/RNBackgroundDownloader.js

@@ -19,6 +19,7 @@ NativeModules.RNBackgroundDownloader = {
     TaskSuspended: 1,
     TaskCanceling: 2,
     TaskCompleted: 3,
+    initDownloader: jest.fn(),
     checkForExistingDownloads: jest.fn().mockImplementation(() => {
         foundDownloads = [
             {

__tests__/mainTest.js

@@ -1,4 +1,4 @@
-import RNBackgroundDownloader from '../index'
+import RNBackgroundDownloader, { initDownloader } from '../index'
 import DownloadTask from '../lib/downloadTask'
 import { NativeModules, NativeEventEmitter } from 'react-native'
 
@@ -129,6 +129,14 @@ test('stop', () => {
   expect(RNBackgroundDownloaderNative.stopTask).toHaveBeenCalled()
 })
 
+test('initDownloader', () => {
+  return RNBackgroundDownloader.initDownloader()
+    .then(res => {
+      expect(RNBackgroundDownloaderNative.initDownloader).toHaveBeenCalled()
+      expect(res).toBe(undefined)
+    })
+})
+
 test('checkForExistingDownloads', () => {
   return RNBackgroundDownloader.checkForExistingDownloads()
     .then(foundDownloads => {

android/src/main/java/com/eko/RNBackgroundDownloaderModule.java

@@ -84,22 +84,10 @@ public class RNBackgroundDownloaderModule extends ReactContextBaseJavaModule imp
   private HashMap<String, WritableMap> progressReports = new HashMap<>();
   private static Object sharedLock = new Object();
 
-  public RNBackgroundDownloaderModule(ReactApplicationContext reactContext) {
+  public RNBackgroundDownloaderModule(ReactApplicationContext reactContext, ReadableMap options) {
     super(reactContext);
 
-    OkHttpClient okHttpClient = new OkHttpClient.Builder().build();
+    this.initDownloader();
-    final Downloader okHttpDownloader = new OkHttpDownloader(okHttpClient,
-                Downloader.FileDownloaderType.PARALLEL);
-
-    loadConfigMap();
-    FetchConfiguration fetchConfiguration = new FetchConfiguration.Builder(this.getReactApplicationContext())
-            .setDownloadConcurrentLimit(4)
-            .setHttpDownloader(okHttpDownloader)
-            .enableRetryOnNetworkGain(true)
-            .setHttpDownloader(new HttpUrlConnectionDownloader(Downloader.FileDownloaderType.PARALLEL))
-            .build();
-    fetch = Fetch.Impl.getInstance(fetchConfiguration);
-    fetch.addListener(this);
   }
 
   @Override
@@ -155,6 +143,32 @@ public class RNBackgroundDownloaderModule extends ReactContextBaseJavaModule imp
     return  constants;
   }
 
+  @ReactMethod
+  public void initDownloader(ReadableMap options) {
+    if (fetch) {
+      fetch.close();
+      fetch = null;
+    }
+
+    Downloader downloader = options.getString("androidDownloaderType") == "parallel"
+      ? Downloader.FileDownloaderType.PARALLEL
+      : Downloader.FileDownloaderType.SEQUENTIAL;
+
+    OkHttpClient okHttpClient = new OkHttpClient.Builder().build();
+    final Downloader okHttpDownloader = new OkHttpDownloader(okHttpClient,
+                downloader);
+
+    loadConfigMap();
+    FetchConfiguration fetchConfiguration = new FetchConfiguration.Builder(this.getReactApplicationContext())
+            .setDownloadConcurrentLimit(4)
+            .setHttpDownloader(okHttpDownloader)
+            .enableRetryOnNetworkGain(true)
+            .setHttpDownloader(new HttpUrlConnectionDownloader(downloader))
+            .build();
+    fetch = Fetch.Impl.getInstance(fetchConfiguration);
+    fetch.addListener(this);
+  }
+
   private void removeFromMaps(int requestId) {
     synchronized(sharedLock) {
       RNBGDTaskConfig config = requestIdToConfig.get(requestId);

index.d.ts

@@ -76,6 +76,11 @@ export interface DownloadTask {
 export type CheckForExistingDownloads = () => Promise<DownloadTask[]>;
 export type EnsureDownloadsAreRunning = () => Promise<void>;
 
+export interface InitDownloaderOptions {
+  type?: 'parallel' | 'sequential' | null;
+}
+export type InitDownloader = (options: InitDownloaderOptions) => Promise<void>;
+
 export interface DownloadOption {
   id: string;
   url: string;
@@ -104,6 +109,7 @@ export interface Priority {
 export const setHeaders: SetHeaders;
 export const checkForExistingDownloads: CheckForExistingDownloads;
 export const ensureDownloadsAreRunning: EnsureDownloadsAreRunning;
+export const initDownloader: InitDownloader;
 export const download: Download;
 export const completeHandler: CompleteHandler;
 export const directories: Directories;
@@ -112,6 +118,7 @@ export const Priority: Priority;
 
 export interface RNBackgroundDownloader {
   setHeaders: SetHeaders;
+  initDownloader: InitDownloader;
   checkForExistingDownloads: CheckForExistingDownloads;
   ensureDownloadsAreRunning: EnsureDownloadsAreRunning;
   download: Download;

index.ts

@@ -1,4 +1,4 @@
-import { NativeModules, NativeEventEmitter } from 'react-native'
+import { NativeModules, NativeEventEmitter, Platform } from 'react-native'
 import DownloadTask from './lib/DownloadTask'
 
 const { RNBackgroundDownloader } = NativeModules
@@ -40,6 +40,11 @@ export function setHeaders (h = {}) {
   headers = h
 }
 
+export function initDownloader (options = {}) {
+  if (Platform.OS === 'android')
+    RNBackgroundDownloader.initDownloader(options)
+}
+
 export function checkForExistingDownloads () {
   return RNBackgroundDownloader.checkForExistingDownloads()
     .then(foundTasks => {

package.json

@@ -56,28 +56,28 @@
     ]
   },
   "devDependencies": {
-    "@babel/core": "^7.20.12",
+    "@babel/core": "^7.22.9",
-    "@babel/eslint-parser": "^7.19.1",
+    "@babel/eslint-parser": "^7.22.9",
-    "@babel/preset-env": "^7.20.2",
+    "@babel/preset-env": "^7.22.9",
-    "@babel/runtime": "^7.20.13",
+    "@babel/runtime": "^7.22.6",
     "@react-native-community/eslint-config": "^3.2.0",
-    "babel-jest": "^29.4.1",
+    "babel-jest": "^29.6.1",
-    "eslint": "8.33.0",
+    "eslint": "8.44.0",
-    "eslint-config-standard": "^17.0.0",
+    "eslint-config-standard": "^17.1.0",
     "eslint-config-standard-jsx": "^11.0.0",
     "eslint-plugin-import": "^2.27.5",
-    "eslint-plugin-n": "^15.6.1",
+    "eslint-plugin-n": "^16.0.1",
     "eslint-plugin-node": "^11.1.0",
     "eslint-plugin-promise": "^6.1.1",
     "eslint-plugin-react": "^7.32.2",
     "eslint-plugin-react-hooks": "^4.6.0",
     "eslint-plugin-standard": "^5.0.0",
-    "immer": "^9.0.19",
+    "immer": "^10.0.2",
-    "jest": "^29.4.1",
+    "jest": "^29.6.1",
     "lint-staged": ">=13",
-    "metro-react-native-babel-preset": "^0.74.1",
+    "metro-react-native-babel-preset": "^0.77.0",
     "react": "18.2.0",
-    "react-native": "0.71.1",
+    "react-native": "0.72.3",
     "react-native-fs": "^2.20.0",
     "react-native-vector-icons": "^9.2.0",
     "react-test-renderer": "18.2.0"