Picasso: Q: How to get a bitmap object from a already cached image?

[daimajia]

i want to reuse the cached image~

is there a method to get a bitmap object from a cached image?

[dnkoutso]

Do you mean memory cache? If so, extend LruCache, add the methods you need and pass that when you build your Picasso instance.

e.g. new Picasso.Builder(context).memoryCache(cache).build().

[daimajia]

nice to meet you again~ you avatar looks cool~

---

i found some files in data/data/package name directory / cache / Picasso

what is the files used for? is that cached images ?

[dnkoutso]

Those are the cached images on the disk. You don't have direct access to this, perhaps you could if you wanted to.. There is not a really clear away from Picasso.

[daimajia]

i want to read these files to reuse some of them...

no method at all ?

[dnkoutso]

Are you using OkHttp? If so then provide your own OkHttpDownloader that you specify the cache dir. Then access the cache dir from there.

[dnkoutso]

You might be missing the point though. Why do you want to re-access the cached bitmap? Picasso does that automatically for you when you load it.

[daimajia]

think this scenario : i use picasso to show a lot of images in a screen. the user want to share one of them to facebook or some other social network , i think i have to get a image file from disk ,then attach the file to an intent to send to diffirent app ...

so i try to find the method which can solve this problem...

[daimajia]

if i can get a cached image immediately.... users do not need to wait to download another to disk..

this is a pretty well user experience...

[dnkoutso]

So, you should already have the keys to the bitmap you loaded to show them to the user the first time around. You would need to do the file i/o on a background thread anyway so you can either use Picasso#get(key) to load the bitmap on a background thread and then attach it to the intent.

I am closing this issue as I don't think Picasso needs a change. I think you have the info/data you need to achieve this, with or without Picasso.

[daimajia]

ok. I got, thank you so much..

by the way, my app is going to online : )

thanks to Piasso, Picasso is pretty awesome!!

attach some screenshot:

http://d.pr/i/7Crw

http://d.pr/i/iBSe

http://d.pr/i/k0Nw

thank you again~

[dnkoutso]

Nice, congrats!

[vinodtiwari]

Hi daimajia - Could you please share your solution? I'm also trying to do the same.

[laobie]

@vinodtiwari i think using Picasso.with(context).load(url).get() instead of ...into(target), u can get a Bitmap Object, then u can transform it to a File or other Object

[yeyintlwin]

Try this

public static Bitmap getBitmap(Context context, String url)
    {
        final String CACHE_PATH = context.getCacheDir().getAbsolutePath() + "/picasso-cache/";
        File[] files = new File(CACHE_PATH).listFiles();
        for (File file:files)
        {
            String fname= file.getName();
            if (fname.contains(".") && fname.substring(fname.lastIndexOf(".")).equals(".0"))
            {
                try
                {
                    BufferedReader br = new BufferedReader(new FileReader(file));
                    if (br.readLine().equals(url))
                    {
                        String image_path =  CACHE_PATH + fname.replace(".0", ".1");                        
                        if (new File(image_path).exists())
                        {
                            return BitmapFactory.decodeFile(image_path);
                        }
                    }
                }
                catch (FileNotFoundException|IOException e)
                {
                }
            }
        }
        return null;
    }

[jewom]

Thanks @YeYintLwin ! It works!!