how to get URL of a image in sd card

[Ciaran Mooney]

I am trying to get the URL of a image I have saved to a SD card/ external storage of device. I need the string of URL to pass to setPicture(string url) of facebook share dialog SDK so I can upload this image to FB from device.

So far have tried getting the URL from URI of a file path to string:

File imagePathFile = new File(savedImagePath);
try{
userImageURL = imagePathFile.toURI().toURL();
Log.d(TAG, "File URL for saved image on FB: " + userImageURL);
}catch(MalformedURLException ex)
{ //ex.printStackTrace();
}
userImageURLString = userImageURL.toString(); setPicture(userImageURLString)

//userImageURLString = "file:/storage/emulated/0/dive_photos/image4373.png";

But keep getting error:

(#100) picture url not properly formed

any input much appreciated.
Ciaran

[Steve Luke]

You share pictures that are already on the internet, you upload pictures that aren't. So you need to upload the picture from the phone to Facebook (via a Request call: https://developers.facebook.com/docs/reference/android/current/class/Request/). I am not sure you will need to share the image after that or not, but if you do need a separate share action then you could get the ID for the image you upload (provided in a callback) and then do the share dialog with the URL of the image (which will be "https://www.facebook.com/photo.php?fbid=" + photoID).

[Ciaran Mooney]

@Steve thanks allot, I've been at this for a couple weeks and was barking up the wrong tree till now.

So I have an idea how to post the image to the users photo album (I've read the method does this by default).
So I have two questions:
1. How do I pass a File to a Bundle which then needs to be passed to a Request object?
2. How do I get the URL of a image posted on the callback?

I have this code to date:

Request request = new Request();

try {
						request = Request.newUploadPhotoRequest(Session.getActiveSession(), imagePathFile, uploadPhotoRequestCallback);

					} catch (FileNotFoundException e1) {

						// TODO Auto-generated catch block
						e1.printStackTrace();
					}

 					Bundle parameters = request.getParameters(); 
 					//add data to Bundle object then add Bundle object to request obj and execute upload via asynch method
 					// Must add the File imagePathFile ro bundle object
 					//and set the Bundle object as a parameter to request object
 					
 					request.setParameters(parameters);
 					request.executeAsync();

And the call-back method:

Request.Callback uploadPhotoRequestCallback = new Request.Callback() {
 					    @Override
 					    public void onCompleted(Response response) {
 					      
// try to get the URL string and then share this with a Facebook share dialog object setPicture( URL string)
 					};

[Steve Luke]

Ciaran Mooney wrote:So I have two questions:
1. How do I pass a File to a Bundle which then needs to be passed to a Request object?

You already have filled out the Request.newUploadPhotoRequest() parameters with the imagePathFile. That method fills in the parameters bundle for you, no need to add it yourself, just execute it.

Ciaran Mooney wrote:2. How do I get the URL of a image posted on the callback?

The callback gets a Response, the Response lets you get a GraphObject, and the GraphObject lets you get properties for the object just uploaded. The important property is "id" and you would add the result to the end of the URL I posted in the previous post. Something like this:

String photoID = (String)response.getGraphObject().getProperty("id");
String photoURL = "https://www.facebook.com/photo.php?fbid=" + photoID;
//share the photo by its new URL...

[Steve Luke]

p.s. The SDK for Facebook's Android API is here: https://developers.facebook.com/docs/reference/android/current. In my experience it is poorly formatted and not well documented, but it is, at least, a place to look for what objects and methods are available.

[Ciaran Mooney]

Hey thanks again.

I am almost there, the photo will upload into a album specified in the file path, in the users profile BUT I cannot use the URL until the user manually accepts the photo in the photo album which kinda makes the exercise pointless...

Instead FB uses a really odd default blank to upload until the photo is accepted.



Looked around SDK (which i fns v awkward) and can't find anything.



Code to date is:

//open a session accord to FB share dialog instructions

//start a session
Session.openActiveSession(this, true, new Session.StatusCallback() {



@Override
public void call(final Session session, SessionState state, Exception exception) {
//callback when session changes state

if(session.isOpened() ){
						Toast.makeText(getApplicationContext(), "Session is open FOR UPLOAD PHOTO", Toast.LENGTH_SHORT).show();
						
 					Request.Callback uploadPhotoRequestCallback = new Request.Callback() {
 						Object graphResponse=null;
 					    @Override
 					    public void onCompleted(Response response) {
 					    	
 					    	//create callback to catch errors and the url of image via graphResponse object
 					    	//sfatey check
 					    	if(isFinishing()){
 					    		return;
 					    	}
 					        if (response.getError() != null) { 
 					            //if failed posting post error
 					        	Log.d(TAG, "FB upload image error: " + response.getError() );
 					        	
 					        } 
 					        try{
 					        //get id of photo and concentate to string URL
 					        graphResponse = response.getGraphObject().getProperty("id");
 					        
 					        Log.d(TAG, "FB Graph Response object ID of photo: " + graphResponse);
 					        
 					        }catch(Exception ex){
 					        	ex.printStackTrace();
 					        }
 					        if(graphResponse == null || !(graphResponse instanceof String) ||
 					        	TextUtils.isEmpty((String) graphResponse)){
 					    		Log.d(TAG, "FB imageFile failed photo upload/no response");
				 
			 }//end if grpahRes ==null
 					    	else{
 					    		//if load succesfull, fbPhotoURL vcan now be passed to share dialog object setPicture() to load dive site image
 					    		fbPhotoURL = "https://www.facebook.com/photo.php?fbid=" +graphResponse;
 					    		Log.d(TAG, "SUCCES: FB URL of uploaded IMAGE IS : " + fbPhotoURL);
 					    	}//end else
 					    	
 					        }//end onCOmplete
 					        
 					        
 					    
 					};//end callback

 					
 					//Request request = new Request();
					try {
						Request request = Request.newUploadPhotoRequest(Session.getActiveSession(), imagePathFile, uploadPhotoRequestCallback);
						Bundle parameters = request.getParameters(); // <-- THIS IS IMPORTANT
	 					//add data image path file to paramters in method, and execute
	 					// add more params here
	 					parameters.putString("name", bottomDiveTime+ " minute dive at "+ waterTemperature +
											" degrees celcuis, vizibilty "+viz+ " meters. Depth:  "
											+diveDepth+" meters. Dive Rating: "+diveRate+"/5!");//also try key message
	 					
	 					request.setParameters(parameters);
						Log.d(TAG, "FB IMagePathe FILE TO REQUEST UPLOADPHOTO IS: " + imagePathFile);
	 					
	 					//request.setParameters(parameters);
	 					request.executeAsync();
					
					
					
					} catch (FileNotFoundException e1) {
						// TODO Auto-generated catch block
						e1.printStackTrace();
					}
 					
					
 					}//end id session opne

[Ciaran Mooney]

Message i get on Facebook:

Would you like to add these photos to your album?
The photos below were uploaded from another application, you'll need to approve them.

[Steve Luke]

Not sure the answer to this one, I only played with it a tiny bit a while ago (before deciding I didn't want to contribute to the Facebook Spam). But this could be because you need to request more permissions to for your application (so the user gives permission on the phone rather than the site). Look here: https://developers.facebook.com/docs/android/login-with-facebook. The publish permissions are at the bottom.

[Ciaran Mooney]

Thanks I finally got form the link you sent.

//request addtional permissions to upload photos
							 Session.NewPermissionsRequest 

    newPermissionsRequest = new Session
    								      .NewPermissionsRequest(LogDive.this, Arrays.asList("publish_actions", "publish_stream"));
    								    session.requestNewPublishPermissions(newPermissionsRequest);

FB developers site is awful, I found it very hard to find info I was looking for.

[Steve Luke]

Awesome, glad you got it working! I agree, their site is not well organized and the documentation is not much more than re-starting the method name and parameter names. They could use a significant amount of re-work to explain what happens, required permissions, what the expected input is, what likely use-cases are, etc... The fact that references to other classes in their API are not hyperlinked is also a poor decision. We should take this into consideration when we write our documentation: do it better than FB!

[Ciaran Mooney]

Couldn't be too hard! I have a headache thinking about it........again thanks for your help couldn't of done it otherwise.