Provide success and error callbacks, and the "Not an image" error.

package.json

@@ -1,17 +1,17 @@
 {
-  "name": "com-sarriaroman-photoviewer",
+  "name": "com-sarriaroman-photoviewer-fix",
   "version": "1.1.10",
   "description": "This plugin is intended to show a picture from an URL into a Photo Viewer with zoom features.",
   "cordova": {
-    "id": "com-sarriaroman-photoviewer",
+    "id": "com-sarriaroman-photoviewer-fix",
     "platforms": [
       "android",
       "ios"
     ]
   },
   "repository": {
     "type": "git",
-    "url": "https://github.com/sarriaroman/photoviewer"
+    "url": "https://github.com/Hypher/photoviewer"
   },
   "keywords": [
     "cordova",

plugin.xml

@@ -1,5 +1,5 @@
 <?xml version='1.0' encoding='utf-8' ?>
-<plugin id="com-sarriaroman-photoviewer" version="1.1.10" xmlns="http://apache.org/cordova/ns/plugins/1.0" xmlns:android="http://schemas.android.com/apk/res/android">
+<plugin id="com-sarriaroman-photoviewer-fix" version="1.1.10" xmlns="http://apache.org/cordova/ns/plugins/1.0" xmlns:android="http://schemas.android.com/apk/res/android">
 	<name>PhotoViewer</name>
 	<description>This plugin is intended to show a picture from an URL into a Photo Viewer with zoom features.</description>
 	<js-module name="PhotoViewer" src="www/PhotoViewer.js">

src/ios/PhotoViewer.m

@@ -53,8 +53,7 @@ - (void)show:(CDVInvokedUrlCommand*)command
 
     [activityIndicator startAnimating];
 
-
-    CDVPluginResult* pluginResult = nil;
+
     NSString* url = [command.arguments objectAtIndex:0];
     NSString* title = [command.arguments objectAtIndex:1];
 
@@ -73,14 +72,16 @@ - (void)show:(CDVInvokedUrlCommand*)command
                     [activityIndicator stopAnimating];
                     [self.docInteractionController presentPreviewAnimated:YES];
                 });
+                [self.commandDelegate sendPluginResult:[CDVPluginResult resultWithStatus:CDVCommandStatus_OK] callbackId:command.callbackId];
+            }
+            else {
+                [activityIndicator stopAnimating];
+                [self.commandDelegate sendPluginResult:[CDVPluginResult resultWithStatus:CDVCommandStatus_ERROR messageAsString:@"Not an image"] callbackId:command.callbackId];
             }
         }];
-        pluginResult = [CDVPluginResult resultWithStatus:CDVCommandStatus_OK];
     } else {
-        pluginResult = [CDVPluginResult resultWithStatus:CDVCommandStatus_ERROR];
+        [self.commandDelegate sendPluginResult:[CDVPluginResult resultWithStatus:CDVCommandStatus_ERROR] callbackId:command.callbackId];
     }
-
-    [self.commandDelegate sendPluginResult:pluginResult callbackId:command.callbackId];
 }
 
 - (NSURL *)localFileURLForImage:(NSString *)image
@@ -96,11 +97,16 @@ - (NSURL *)localFileURLForImage:(NSString *)image
     NSData *data = [NSData dataWithContentsOfURL:fileURL];
 
     if( data ) {
-        fileURL = [[tmpDirURL URLByAppendingPathComponent:filename] URLByAppendingPathExtension:[self contentTypeForImageData:data]];
+        NSString *contentType = [self contentTypeForImageData:data];
+        if(contentType) {
+            fileURL = [[tmpDirURL URLByAppendingPathComponent:filename] URLByAppendingPathExtension:contentType];
 
-        [[NSFileManager defaultManager] createFileAtPath:[fileURL path] contents:data attributes:nil];
+            [[NSFileManager defaultManager] createFileAtPath:[fileURL path] contents:data attributes:nil];
 
-        return fileURL;
+            return fileURL;
+        } else {
+            return nil;
+        }
     } else {
         return nil;
     }

www/PhotoViewer.js

@@ -1,6 +1,6 @@
 var exec = require('cordova/exec');
 
-exports.show = function(url, title, options) {
+exports.show = function(url, title, options, successCallback, errorCallback) {
     if( title == undefined ) {
       title = '';
     }
@@ -9,5 +9,5 @@ exports.show = function(url, title, options) {
         options = {};
     }
 
-    exec(function(){}, function(){}, "PhotoViewer", "show", [url, title, options]);
+    exec(successCallback, errorCallback, "PhotoViewer", "show", [url, title, options]);
 };