从嵌套片段android中的backstack中删除片段(Remove fragment from backstack in nested fragments android)

从嵌套片段android中的backstack中删除片段(Remove fragment from backstack in nested fragments android) java

我有一个MainActivity，我在BenefintsFragment中添加了一个Fragment ==> BenefitsFragment，它有一个RelativeLayout

<RelativeLayout android:visibility="gone" android:background="@android:color/white" android:id="@+id/benefitContainer" android:layout_width="match_parent" android:layout_height="match_parent"> </RelativeLayout>

我正在添加另一个片段

browseBtn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { RelativeLayout mLayout = (RelativeLayout) view.findViewById(R.id.benefitContainer); mLayout.setVisibility(View.VISIBLE); getChildFragmentManager().beginTransaction() .add(R.id.benefitContainer, new ConfirmPinFragment()).commitNow(); } });

在我的新ConfirmPinFragment我试图回到旧的BenefitsFragment

backBtn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { getChildFragmentManager().popBackStack(); } });

但是这个popBackStack无法正常工作，如果我尝试删除使用

getChildFragmentManager().beginTransaction().remove(ConfirmPinFragment.this).commitNow();

它崩溃说

java.lang.IllegalStateException: FragmentManager is already executing transactions

I have a MainActivity in which I have Added a Fragment ==> BenefitsFragment in BenefintsFragment there is a RelativeLayout

<RelativeLayout android:visibility="gone" android:background="@android:color/white" android:id="@+id/benefitContainer" android:layout_width="match_parent" android:layout_height="match_parent"> </RelativeLayout>

I am adding another fragment like

browseBtn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { RelativeLayout mLayout = (RelativeLayout) view.findViewById(R.id.benefitContainer); mLayout.setVisibility(View.VISIBLE); getChildFragmentManager().beginTransaction() .add(R.id.benefitContainer, new ConfirmPinFragment()).commitNow(); } });

In my new ConfirmPinFragment I am trying to go back to old BenefitsFragment as

backBtn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { getChildFragmentManager().popBackStack(); } });

However this popBackStack not working, if i try to remove using

getChildFragmentManager().beginTransaction().remove(ConfirmPinFragment.this).commitNow();

It crashes saying

java.lang.IllegalStateException: FragmentManager is already executing transactions

最满意答案

您从FragmentTransaction添加到后退状态，并使用FragmentManager pop方法从backstack中删除：

FragmentManager manager = getActivity().getSupportFragmentManager(); FragmentTransaction trans = manager.beginTransaction(); trans.remove(myFrag); trans.commit(); manager.popBackStack();

You add to the back state from the FragmentTransaction and remove from the backstack using FragmentManager pop methods:

FragmentManager manager = getActivity().getSupportFragmentManager(); FragmentTransaction trans = manager.beginTransaction(); trans.remove(myFrag); trans.commit(); manager.popBackStack();