Added progressDivider

Downloader.h

@@ -9,6 +9,7 @@ typedef void (^ProgressCallback)(NSNumber*, NSNumber*);
 
 @property (copy) NSString* fromUrl;
 @property (copy) NSString* toFile;
+@property (copy) NSNumber* progressDivider;
 @property (copy) DownloaderCallback callback;         // Download has finished (data written)
 @property (copy) ErrorCallback errorCallback;         // Something went wrong
 @property (copy) BeginCallback beginCallback;         // Download has started (headers received)

Downloader.m

@@ -10,6 +10,7 @@
 
 @property (retain) NSURLConnection* connection;
 @property (retain) NSNumber* statusCode;
+@property (retain) NSNumber* lastProgressValue;
 @property (retain) NSNumber* contentLength;
 @property (retain) NSNumber* bytesWritten;
 
@@ -72,7 +73,19 @@
 
     _bytesWritten = [NSNumber numberWithUnsignedInteger:[_bytesWritten unsignedIntegerValue] + data.length];
 
-    return _params.progressCallback(_contentLength, _bytesWritten);
+    if (_params.progressDivider <= 1) {
+        return _params.progressCallback(_contentLength, _bytesWritten);
+    } else {
+        NSLog(@"---Progress callback---");
+        long double progress = Math.round(((double) _bytesWritten * 100) / _contentLength);
+        if (progress % param.progressDivider == 0) {
+            if ((progress != _lastProgressValue) || (_bytesWritten == _contentLength)) {
+                NSLog(@"---Progress callback EMIT--- %zu", progress);
+                _lastProgressValue = [NSNumber numberWithLong:progress];
+                return _params.progressCallback(_contentLength, _bytesWritten);
+            }
+        }
+    }
   }
 }
 

FS.common.js

@@ -155,7 +155,7 @@ var RNFS = {
       .catch(convertError);
   },
 
-  downloadFile(fromUrl, toFile, begin, progress) {
+  downloadFile(fromUrl, toFile, begin, progress, progressDivider = 1) {
     var jobId = getJobId();
     var subscriptions = [];
     
@@ -167,7 +167,7 @@ var RNFS = {
       subscriptions.push(NativeAppEventEmitter.addListener('DownloadProgress-' + jobId, progress));
     }
 
-    return _downloadFile(fromUrl, toFile, jobId)
+    return _downloadFile(fromUrl, toFile, jobId, progressDivider)
       .then(res => {
         subscriptions.forEach(sub => sub.remove());
         return res;

RNFSManager.m

@@ -175,6 +175,7 @@ RCT_EXPORT_METHOD(moveFile:(NSString *)filepath
 RCT_EXPORT_METHOD(downloadFile:(NSString *)urlStr
                   filepath:(NSString *)filepath
                   jobId:(nonnull NSNumber *)jobId
+                  progressDivider:(nonnull NSNumber *)progressDivider
                   callback:(RCTResponseSenderBlock)callback)
 {
 
@@ -182,6 +183,7 @@ RCT_EXPORT_METHOD(downloadFile:(NSString *)urlStr
 
   params.fromUrl = urlStr;
   params.toFile = filepath;
+  params.progressDivider = progressDivider;
 
   params.callback = ^(NSNumber* statusCode, NSNumber* bytesWritten) {
     NSMutableDictionary* result = [[NSMutableDictionary alloc] initWithDictionary: @{@"jobId": jobId,

android/src/main/java/com/rnfs/DownloadParams.java

@@ -19,6 +19,7 @@ public class DownloadParams {
   
   public URL src;
   public File dest;
+  public float progressDivider;
   public OnTaskCompleted onTaskCompleted;
   public OnDownloadBegin onDownloadBegin;
   public OnDownloadProgress onDownloadProgress;

android/src/main/java/com/rnfs/Downloader.java

@@ -81,12 +81,16 @@ public class Downloader extends AsyncTask<DownloadParams, int[], DownloadResult>
         }
 
         total += count;
-        double progress = Math.round(((double) total * 100) / lengthOfFile);
-        if (progress % 10 == 0) {
-            if ((progress != lastProgressValue) || (total == lengthOfFile)) {
-                Log.d("Downloader", "EMIT: " + String.valueOf(progress) + ", TOTAL:" + String.valueOf(total));
-                lastProgressValue = progress;
-                publishProgress(new int[]{lengthOfFile, total});
+        if (param.progressDivider <= 1) {
+            publishProgress(new int[]{lengthOfFile, total});
+        } else {
+            double progress = Math.round(((double) total * 100) / lengthOfFile);
+            if (progress % param.progressDivider == 0) {
+                if ((progress != lastProgressValue) || (total == lengthOfFile)) {
+                    Log.d("Downloader", "EMIT: " + String.valueOf(progress) + ", TOTAL:" + String.valueOf(total));
+                    lastProgressValue = progress;
+                    publishProgress(new int[]{lengthOfFile, total});
+                }
             }
         }
         output.write(data, 0, count);

android/src/main/java/com/rnfs/RNFSManager.java

@@ -220,7 +220,7 @@ public class RNFSManager extends ReactContextBaseJavaModule {
   }
 
   @ReactMethod
-  public void downloadFile(String urlStr, final String filepath, final int jobId, final Callback callback) {
+  public void downloadFile(String urlStr, final String filepath, final int jobId, float progressDivider, final Callback callback) {
     try {
       File file = new File(filepath);
       URL url = new URL(urlStr);
@@ -229,6 +229,7 @@ public class RNFSManager extends ReactContextBaseJavaModule {
 
       params.src = url;
       params.dest = file;
+      params.progressDivider = progressDivider;
 
       params.onTaskCompleted = new DownloadParams.OnTaskCompleted() {
         public void onTaskCompleted(DownloadResult res) {