CODEWITHSUNDEEP
androidfragmentfragmenttransaction
Wayne
Wayne

Reputation: 6449

How to add and remove same fragment frequently

My application usually add and then remove the same fragment many times. Below is how I do this:

Add fragment

if (mHomeFragment == null)
    {
        mHomeFragment = new HomeFragment();
        new Handler().postDelayed(new Runnable()
        {
            @Override
            public void run()
            {
                getSupportFragmentManager().beginTransaction().add(R.id.dummy, mHomeFragment).commit();
            }
        }, getResources().getInteger(R.integer.transition_duration));
    }
else
    {
        getSupportFragmentManager().beginTransaction().add(R.id.dummy, mHomeFragment).commit();
    }

Remove fragment

getSupportFragmentManager().beginTransaction().remove(mHomeFragment).commit();

Problem is, sometime my app has crashed when navigate from the activity contains that fragment (HomeFragment) to another activity. I tried to figure out why but still no way. I have no full error-log here because this error doesn't happen often, but the error is same like this https://android.googlesource.com/platform/frameworks/support/+/5506618c80a292ac275d8b0c1046b446c7f58836%5E!/:

IllegalStateException: Failure saving state......active HomeFragment{419494f0} has cleared index: -1

Does anyone see any problem with my code or just know how to fix this error, please help me. Thank you all in advance.

Upvotes: 0

Views: 1514

Answers (1)

Robert Estivill
Robert Estivill

Reputation: 12477

It sounds like the runnable might be running after the activity was paused or finished. Just make sure to call handler.removeCallback on the activity onPause method to avoid the callback to the activity once it's done.

If you need to swap fragments often, you can use the FragmentTransaction hide and show methods so you avoid the initialization overhead.

Upvotes: 1

Related Questions