Android N with Fragment bug

[super-hu]

Hi;
device：google pixel Android 7.1 and hauwei mate9 Android 7.0
Fresco is not visible on Android N devices, using the fragment jump, Android N below is ok.

Tested the other library is ok .

initialization，one/two：fresco ， Three four：Glide

start fragment:

[lambdapioneer]

Hi @hcadoid, thanks for raising this issue. What do you mean by "fragment jump"? Is this a particular fragment transition?

Also which Fresco library are you using? Would be great if you can provide some small code sample that reproduces the issue.

[super-hu]

yes,I use fresco and Glide to compare. "fragment jump" is fargment Transaction.
Here's my code：
FrescoActivity
public class FrescoActivity extends AppCompatActivity {
@OverRide
protected void onCreate(@nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_fresco);
if (savedInstanceState == null) {
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();

        transaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
        transaction.setCustomAnimations(
                R.anim.h_fragment_enter,
                R.anim.h_fragment_exit,
                R.anim.h_fragment_pop_enter,
                R.anim.h_fragment_pop_exit
        );
        transaction.replace(R.id.fl_container, FrescoMainFragment.newInstance());
        transaction.commit();
    }
}

}

FrescoMainFragment
public class FrescoMainFragment extends Fragment {

private SimpleDraweeView s1,s2,s3,s4;

public static FrescoMainFragment newInstance() {
    
    Bundle args = new Bundle();
    FrescoMainFragment fragment = new FrescoMainFragment();
    fragment.setArguments(args);
    return fragment;
}

@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    View mView =inflater.inflate(R.layout.fragment_fresco, container, false);
    initView(mView);
    return mView;
}

private void initView(View mView) {
    s1= (SimpleDraweeView) mView.findViewById(R.id.s1);
    s2= (SimpleDraweeView) mView.findViewById(R.id.s2);
    s3= (SimpleDraweeView) mView.findViewById(R.id.s3);
    s4= (SimpleDraweeView) mView.findViewById(R.id.s4);
    s1.setImageURI("http://odqp9ta7o.qnssl.com/5454114758854668288");
    s2.setImageURI("http://odqp9ta7o.qnssl.com/5464149113932808192");
    Glide.with(this).load("http://odqp9ta7o.qnssl.com/5429034688435023872").into(s3);
    Glide.with(this).load("http://odqp9ta7o.qnssl.com/5468585586862010368").into(s4);

    Button btn= (Button) mView.findViewById(R.id.btn);

    btn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            final FragmentTransaction transaction =  getFragmentManager().beginTransaction();
            transaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
            transaction.setCustomAnimations(
                    R.anim.h_fragment_enter,
                    R.anim.h_fragment_exit,
                    R.anim.h_fragment_pop_enter,
                    R.anim.h_fragment_pop_exit
            );

            transaction.addToBackStack(null);

            transaction.hide(FrescoMainFragment.this);
            transaction.add(R.id.fl_container, OtherFragment.newInstance());
            transaction.commit();
        }
    });

}

OtherFragment
public class OtherFragment extends Fragment {

public static OtherFragment newInstance() {

    Bundle args = new Bundle();

    OtherFragment fragment = new OtherFragment();
    fragment.setArguments(args);
    return fragment;
}

@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    return inflater.inflate(R.layout.test_linearlayout, container, false);
}

}
I think it might be this code：transaction.hide (FrescoMainFragment.this);

[oprisnik]

Android N changed visibility handling for Drawables. I've added a workaround, see #1445:

impleDraweeView.setLegacyVisibilityHandlingEnabled(true)

[super-hu]

@oprisnik This does not work。

s1= (SimpleDraweeView) mView.findViewById(R.id.s1);
s2= (SimpleDraweeView) mView.findViewById(R.id.s2);
s3= (SimpleDraweeView) mView.findViewById(R.id.s3);
s4= (SimpleDraweeView) mView.findViewById(R.id.s4);
s1.setLegacyVisibilityHandlingEnabled(true);
s2.setLegacyVisibilityHandlingEnabled(true);
s1.setImageURI("http://odqp9ta7o.qnssl.com/5454114758854668288");
s2.setImageURI("http://odqp9ta7o.qnssl.com/5464149113932808192");

Glide.with(this).load("http://odqp9ta7o.qnssl.com/5429034688435023872").into(s3); Glide.with(this).load("http://odqp9ta7o.qnssl.com/5468585586862010368").into(s4);

[crossle]

Does not work setLegacyVisibilityHandlingEnabled on Android N galaxy s8+, fresco 1.5

[hnvn]

I confirm that setLegacyVisibilityHandlingEnabled doesn't work on Android N Sony Xepria Z5, fresco 1.5.

[hnvn]

I already created a sample project to reproduce this problem. Please take a look at it. Thanks!
https://github.com/hnvn/frescobugdemo

[hnvn]

@oprisnik can you fix this problem soon?

[oprisnik]

I don't think I'll have time for a proper fix soon. However, doing something along the lines of

setExitSharedElementCallback(new SharedElementCallback() {
    @Override
    public void onSharedElementEnd(List<String> names,
                                   List<View> elements,
                                   List<View> snapshots) {
        super.onSharedElementEnd(names, elements, snapshots);
        for (final View view : elements) {
            if (view instanceof SimpleDraweeView) {
                view.post(() -> {
                    view.setVisibility(View.VISIBLE);
                    view.requestLayout();
                });
            }
        }
    }
});

as mentioned in #1445 should work.

The problem is that Google changed the visibility API and I didn't find an easy way to fix that for Drawee.

[oprisnik]

Pull requests are welcome :)

[hnvn]

Thanks for your suggestion. But I am still in the dark, where shall I place this code?

[oprisnik]

@hnvn take a look at the comments in #1445. You have to do this in your activity / fragment

[hnvn]

I don't know why, but if I replace hide() and add() by replace() fragment, the problem has gone.

[dementia2029]

Same here. I want to achieve animation in transaction with hide and show fragments. All images disappear during animation.

[zmroczek]

This is an issue with setLegacyVisibilityHandlingEnabled, so a duplicate of #1445.

[MichaelJokAr]

@super-hu did you solve this bug?