FragmentTransactionKeeper

A practical library for committing Fragment Transactions safely.

The related issue:

java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState
      at android.support.v4.app.FragmentManagerImpl.checkStateLoss(FragmentManager.java:2080)
      at android.support.v4.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:2106)
      at android.support.v4.app.BackStackRecord.commitInternal(BackStackRecord.java:683)
      at android.support.v4.app.BackStackRecord.commit(BackStackRecord.java:637)

Also check : Fragment Transactions & Activity State Loss

Usage:

• Bind the TransactionKeeper in your main UI (Activity / Fragment)

    transactionKeeper = TransactionKeeper(this)

• Wrap your asynchronous Fragment transaction logic as below :

    transactionKeeper.execute { activity ->
           kotlin.run {
                 // commit your own Framgment transaction here
           }
    }

For detail info, please check the MainActivity in the app module.

Credit:

kshilovskiy's action-buffer provides an example of avoiding the IllegalStateException during the fragment transition while dealing with background tasks.

Todo list:

• Refactor the library code to provide more convenient APIs