Store facebook profile picture on a bitmap

somezombiegm

Hello! How can i store my (or any other user) facebook profile picture on a variable? like a bitmap.

facebook:addEventListener(Event.REQUEST_COMPLETE, function(e) print(e.response) end facebook:graphRequest("me/picture")

Apparently on request complete I get the image's url, which I could then add to a texture and then create a bitmap. But on e.response I get a gigantic string of weird characters and symbols. So I'm kinda stuck here. Please help .

SinisterSoft

I think the media plugin can help you with this.
( @ar2rsawseen originally coded this bit, his original code is somewhere on the forum )

--to check if file exists function file_exists(name) local f=io.open(name,"r") if f~=nil then io.close(f) return true else return false end end   --to delete a file function file_delete(name) if file_exists(name) then os.remove(name) end end   -- to process photo queue function fbProcessPhoto() --if there is something in queue if #fbPhotoQueue > 0 then --get id local id = table.remove(fbPhotoQueue) --construct url local url = "<a href="https://graph.facebook.com/"..id.."/picture?type=square&quot" rel="nofollow">https://graph.facebook.com/"..id.."/picture?type=square&quot</a>; print(url) --make UrlLoader call local loader = UrlLoader.new(url) loader:addEventListener(Event.COMPLETE,function(event) print("complete", id)   -- try to save it in file as png local out = io.open("|D|fb"..id..".png", "wb") out:write(event.data) out:close() -- resave it as png, because image might have been jpeg --but media plugin will automatically convert it to png -- pcall because it might be other unsupported format pcall(function() local media = Media.new("|D|fb"..id..".png") media:save() media = nil end) end) -- we can ignore errors photos and try them again on next sync loader:addEventListener(Event.ERROR,function() print("error",id) end) --call to process next photo fbProcessPhoto() end end   function loadFBphoto(id) local texture local file="|D|fb"..id..".png" -- if picture exists if file_exists(file) then print("loading "..file) local success success,texture=pcall(Texture.new,file,true) -- if I was able to load it (has correct format) if not success then texture = nil file_delete(file) print("error loading "..file) end end -- if no texture, take default pic if not texture then texture = Texture.new("fb_default.png", true) end return texture end

somezombiegm

@SinisterSoft I'm gonna try that out

somezombiegm

@SinisterSoft
I get an error when trying to load the images .
This is my output (I changed the id to 222):

<a href="https://graph.facebook.com/222/picture?type=square" rel="nofollow">https://graph.facebook.com/222/picture?type=square</a> complete 222 loading |D|fb222.png error loading |D|fb222.png fb_default.png: No such file or directory. stack traceback: highScores.lua:93: in function 'loadFBphoto' highScores.lua:330: in function <highScores.lua:324>

The problem would be here:

-- if no texture, take default pic if not texture then texture = Texture.new("fb_default.png", true) end

somezombiegm

@SinisterSoft
Wait, I didn't add the plugin... But I've just enter here http://giderosmobile.com/labs/media and on the left it says: Upgrade to Get it... So I guess I can't use it.

jdbc

@SinisterSoft
Wait, I didn't add the plugin... But I've just enter here http://giderosmobile.com/labs/media and on the left it says: Upgrade to Get it... So I guess I can't use it.

Gideros is open source, you can use all plugins.

SinisterSoft

@somezombiegm Just use any picture you like - it's what will be show if no picture can be found.

somezombiegm

@jdbc couldn't download it from here http://giderosmobile.com/labs/media. But it's here with the other gideros plugins https://github.com/gideros/giderosplugins.

somezombiegm

@SinisterSoft I appreciate the help, but I still have the same problem. I haven't had a single example where I could retrieve a profile picture. I don't want to load any picture in case of no picture is found.

I don't really understand that code and I don't know if the image is being wrongly saved or loaded, It would be great to make it work right.

I understand this is what happens when no picture can be found, and that I should create a default picture in case of that.

-- if no texture, take default pic if not texture then texture = Texture.new("fb_default.png", true) end

But what I really need to fix is the correct saving of the profile picture.

SinisterSoft

You can load a fileviewer on the android device, look in the gideros player folder and you will see your game name - the pictures should be in there somewhere.

somezombiegm

@SinisterSoft Thanks again and sorry for being such a noob. Here's what I have so far:

I installed a fileviewer and I can see the pictures now, they're always created and they're all in png.

The programm always knows the pictures exist because on the loadFBphoto(id) function:

file_exists(file)

is always true.

However,

success,texture=pcall(Texture.new,file,true)

always returns success as false. And

texture = Texture.new(picturename.png, true)

always gives me a "No such file or directory." error.

The thing is, all the profile pictures are getting saved in gideros/myGame/documents. And all my game images are stored in gideros/myGame/resource. I have no problems loading textures from resource.

I guess the solution could be:
- To tell gideros to look on "documents" instead of "resource" when loading a texture?
- Or maybe to create the profile pictures directly on "resource" instead of "documents"?

pie

@somezombiegm you can't write in resources, but you can load from documents, see http://docs.giderosmobile.com/file_system.html

somezombiegm

Thanks @pie. Now I understand why SinisterSoft added the |D| on the image route.

I'm testing the texture load again

texture = Texture.new("|D|"..picturename..".png", true)

and now I get the message: "Image format is not supported".

But the images are saved in png

somezombiegm

@pie, wait, scratch that! I'm getting the same error from before: No such file or directory.

And I'm searching for an image on documents with it's exact name, adding |D| before... So it should've work since the first time I tested the code. =(

ar2rsawseen

Some facebook images, for some reason, are in gif, and Gideros can't handle gif images.
that's why in my original code:
http://giderosmobile.com/forum/discussion/comment/33814#Comment_33814

I use pcall, to catch exceptions of incorrect format and load default image instead

SinisterSoft

@ar2rsawseen - I still use that - see src above, he must have cut it out?

somezombiegm

I'm attaching a simplified example of what I'm working on, which would be to save the image, load it and then save it on a bitmap and show it.

I added the loadFBphoto function and an aditional one: loadFBphoto2, which doesn't use pcall. With that method we can see the "Image format not supported" error even if the photo is saved on png.

ar2rsawseen

@somezombiegm it does not matter how it was saved. If it was gif, it would not be converted to png, because nor gideros nor media library have gif library.
So if you save it as .png it will still be gif and will be incorrect image format just as you get

you just need to use default images in such cases

somezombiegm

@ar2rsawseen oh noes =(( bummer (

Well, case closed. Thanks to everyone for your help

Xman

Btw, how about add an api for creating texture from image data for displaying image from network?

SinisterSoft

@somezombiegm I've not had any gif images at all with any of my friends on FB.

You could try reading the image data and drawing it as a rendertarget?
https://en.wikipedia.org/wiki/GIF

(if it really is important, but gifs should not be too common)

jdbc

I have the same problem than somezombiegm. I have used a profile jpg picture, Media plugin converts into png but i got "unsupported format" if I do not use pcall.

If I used pcall then sucess and texture are nil.

I am not sure that Media plugin converts a JPG to PNG in all cases, I mean Media plugin converts JPG images into PNG format, but not properly.

I got nil |D|1585191695063321.png: Image format is not supported. when pcall is used.

jdbc

I found my error, I just forgot to integrate Media plugin, so Media is nil but pcall avoid the error.

May be somezombiegm has the same problem.