picasso loading old images from cache after images being updated on server

[jawadturk]

hey , I'm new to picasso . Its amazing library with great capabilities . Im using it to load images from url . in my code i might update the image on the server keeping the same URL . my problem is that after updating the image picasso is still displaying the old image from cache and not from URL . I already know why because the URL is the same . so please i need help in case there is a way to let picasso know that image should be loaded again from server instead cache . Ive tried to invalidate URL after updating certain image but when i went offline images failed to load from cache although they were loaded again !

[leicht-io]

This might be because of the Expires or Cache Policy headers.

Can you please provide your headers?

[JakeWharton]

You can use .memoryPolicy(MemoryPolicy.NO_CACHE) on the next request which will skip Picasso's cache. There's also .networkPolicy(NetworkPolicy.NO_CACHE) if you need to bust the HTTP cache.

[RohitJPatil]

Excellent answer .memoryPolicy(MemoryPolicy.NO_CACHE)
Thanks alot

[gitchrisadams]

After using .memoryPolicy, the image was still not changing. After using .networkPolicy(NetworkPolicy.NO_CACHE)
It worked perfectly. Thank you!

[JerabekJakub]

Hi, how about the use case when image is changed for example once a year. I don't wanna set policy to NO_CACHE, because i want caching enabled. URL is still the same after update, how long will it take to load new version?

[JakeWharton]

It will be loaded once per application launch or when evicted from the
cache by loading a bunch of other images.

On Thu, Sep 7, 2017 at 8:37 AM JerabekJakub [e-mail]
wrote:

Hi, how about the use case when image is changed for example once a year.
I don't wanna set policy to NO_CACHE, because i want caching enabled. URL
is still the same after update, how long will it take to load new version?

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[CoolMind]

Why is this issue closed? I bumped into this problem. Is there a way to force Picasso update it's cached image?

[JakeWharton]

You can use the memory and disk cache APIs on RequestBuilder to control
that.

On Thu, Feb 22, 2018 at 8:45 AM Alexander [e-mail] wrote:

Why is this issue closed? I bumped into this problem. Is it a way to force
Picasso update it's cached image?

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[CoolMind]

Thank you, Jake! It's the first time when such a famous person replies me. I looked for "Request.Builder" and understood that it was better to make Picasso as a Singleton in Application class. In my case a user receives an image from gallery or camera and saves it in a temporary file. If then the user gets a new photo it should be moved into a file and shown again. So now I use different file names, but probably it will be better to use the same.

[blackhawk389]

In my case picasso loading image again, seems like it didnt cached image

[sivarajesh]

Try this @CoolMind @blackhawk389

Picasso.get().invalidate("THAT URL")