@Override
    public void finishUpdate(ViewGroup container) {
        if (mCurTransaction != null) {
            mCurTransaction.commitAllowingStateLoss();
            mCurTransaction = null;
            mFragmentManager.executePendingTransactions();
        }
    }
Return the Fragment associated with a specified position.
library/src/main/java/com/shizhefei/view/indicator/FragmentListPageAdapter.java