Support for Base64 encoded JPEG URIs

README.md

@@ -1,3 +1,18 @@
+Added support for JPEG Base64 images URIs passed as file name.
+
+Example
+======
+
+
+```
+
+var nativePathToJpegImage = 'data:image/jpeg;base64,<data>'
+
+window.cordova.plugins.imagesaver.saveImageToGallery(nativePathToJpegImage, onSaveImageSuccess, onSaveImageError);
+
+```
+
+
 SaveImage
 ======
 

src/android/SaveImage.java

@@ -21,6 +21,7 @@
 import android.content.pm.PackageManager;
 import android.net.Uri;
 import android.os.Environment;
+import android.util.Base64;
 import android.util.Log;
 
 /**
@@ -77,6 +78,31 @@ private void saveImageToGallery(JSONArray args, CallbackContext callback) throws
      */
     private void performImageSave() throws JSONException {
         // create file from passed path
+
+        // BoB0: patch per supportare i file base64
+        String ext = "";
+        String dataB64 = "";
+        if (filePath.indexOf("data:image/jpeg;base64,") == 0) {
+            ext = "jpg";
+            dataB64 = filePath.substring("data:image/jpeg;base64,".length());
+        }
+
+        if (!ext.equals("")) {
+            try {
+                byte[] data = Base64.decode(dataB64, Base64.DEFAULT);
+                File outputFile = File.createTempFile("image", ext);
+                FileOutputStream stream = new FileOutputStream(outputFile);
+                stream.write(data);
+                stream.close();
+                filePath = outputFile.getAbsolutePath();
+
+            } catch (Exception e) {
+                callbackContext.error("RuntimeException occurred: " + e.getMessage());
+            }
+
+        }
+
+
         File srcFile = new File(filePath);
 
         // destination gallery folder - external storage
@@ -191,3 +217,4 @@ public void onRequestPermissionResult(int requestCode, String[] permissions, int
 		}
 	}
 }
+

src/ios/SaveImage.m

@@ -12,11 +12,21 @@ - (void)saveImageToGallery:(CDVInvokedUrlCommand*)command {
 
         NSLog(@"Image absolute path: %@", imgAbsolutePath);
 
-	    UIImage *image = [UIImage imageWithContentsOfFile:imgAbsolutePath];
+        UIImage *image = nil;
+        if ([imgAbsolutePath hasPrefix:@"data:image/jpeg;base64,"]) {
+            image = [self decodeBase64ToImage: [imgAbsolutePath substringFromIndex:[@"data:image/jpeg;base64," length]]];
+        } else {
+            image = [UIImage imageWithContentsOfFile:imgAbsolutePath];
+        }
 	    UIImageWriteToSavedPhotosAlbum(image, self, @selector(image:didFinishSavingWithError:contextInfo:), nil);
 	}];
 }
 
+- (UIImage *)decodeBase64ToImage:(NSString *)strEncodeData {
+    NSData *data = [[NSData alloc]initWithBase64EncodedString:strEncodeData options:NSDataBase64DecodingIgnoreUnknownCharacters];
+    return [UIImage imageWithData:data];
+}
+
 - (void)dealloc {
 	[callbackId release];
     [super dealloc];
@@ -39,3 +49,4 @@ - (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error context
 }
 
 @end
+