ImageView no longer exists. You should not use this PhotoViewAttacher any more. about photoview HOT 17 CLOSED

I tried this it might work for you guys. No errors so far.
In PhotoviewAttacher File replace clean up function with the function below

@SuppressLint("NewApi")
    @SuppressWarnings("deprecation")
    public final void cleanup() {
        if (VERSION.SDK_INT >= VERSION_CODES.JELLY_BEAN)
        {
            if (null != mImageView) {
                mImageView.get().getViewTreeObserver().removeOnGlobalLayoutListener(this);
                }

                    if (null != mViewTreeObserver && mViewTreeObserver.isAlive()) {
                         mViewTreeObserver.removeOnGlobalLayoutListener(this);

                    mViewTreeObserver = null;

                    // Clear listeners too
                    mMatrixChangeListener = null;
                    mPhotoTapListener = null;
                    mViewTapListener = null;
                    // Finally, clear ImageView
                    mImageView = null;
                    }

        }
        else
        {
        if (null != mImageView) {
            mImageView.get().getViewTreeObserver().removeGlobalOnLayoutListener(this);
            }

                if (null != mViewTreeObserver && mViewTreeObserver.isAlive()) {
                     mViewTreeObserver.removeGlobalOnLayoutListener(this);

                mViewTreeObserver = null;

                // Clear listeners too
                mMatrixChangeListener = null;
                mPhotoTapListener = null;
                mViewTapListener = null;
                // Finally, clear ImageView
                mImageView = null;
                }
        }
            }

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This is weird behaviour caused by ImageView WeakReference in PhotoViewAttacher. Weird it is because system decides that ImageView is no more accessible from anywhere and clean the reference

Chris, isn't it strange that you call

imageView.setImageDrawable

but iside that method getImageView throws ImageView no longer exists?

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@chrisbanes This change hasn't made it into the maven central release, right?

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Unfortunately it seems that Chris hasn't worked on this project in a while :(
Even when using PhotoView instead of attaching to an ImageView I have seen cases when this ISE is thrown. The above commit by Chris was necessary for me to get the library to work reliably.

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Yes, same here. It might be mindful to set up a fork / team for this and publish it ourselves.

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I don't really have much invested in this project atm. I used it briefly at a company I interned at a couple of months ago. That being said, this is one of the nicer image zoom implementations I've found and with a few fixes I think it could be really great. If you want to organise a fork/team to carry on development then I'd be willing to help out where I can but it would only be in a limited way.

It depends really on what you have in mind. Beyond this pull request I'd also like to see the two I've made (#63, #64) get merged. Would be even better if somebody implements EdgeEffectCompat at some point for an overscroll effect.

Would be good if we could get some feedback from @chrisbanes

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It appears that mViewTreeObserver.isAlive() is false on JellyBean while mImageView.get().getViewTreeObserver().isAlive() is true. I have fixed this issue by removing mViewTreeObserver field and getting ViewTreeObserver from ImageView once it is required.

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@andriytam can you create pull request against current dev branch please?

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@saimr thank you .it work for me.

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Updating to the recently released 1.2.2 fixed that bug. I haven't seen the error since I updated at least.

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@saimr thank you .it work for me.

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thanks.

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@saimr It's still oocurring!

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There is no mViewTreeObserver field?

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i have replace the cleanup function but there is no mViewTreeObserver field,where does it is decareed

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Where is mViewTreeObserver?????I can't find it.Could anyone can help me??

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Think I'm seeing a similar issue on 1.2.4, PhotoView spams my log with:
PhotoViewAttacher: ImageView no longer exists. You should not use this PhotoViewAttacher any more., even though I've called cleanup.

I also found that it was not correctly removing itself form the ViewTreeObserver. For future reference to anyone with the problem the quick-and-dirty fix was:

attacher.cleanup();
getViewTreeObserver().removeOnGlobalLayoutListener(attacher);

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