如何禁用片段中的抽屉并返回正确的片段

问题描述

我有一个带有Fragment布局的主Activity.抽屉有3个选项:

I have a main Activity with a Fragment layout. The drawer has 3 option:

Fragment[1], Fragment[2], Fragment[3].

Fragment [2]和Fragment [3]内部是一个按钮.此按钮打开其他片段.片段[4].

Inside Fragment[2] and Fragment[3] is one button. This button open other fragment. Fragment[4].

我希望Fragment [4]不带抽屉，但带有后退按钮.

I want Fragment[4] without drawer but with a back button.

这是Fragment [2]中的onClick代码

This is the onClick code in Fragment[2]

Fragment fragment = new InstalacionesEncontradasFragment();
Bundle bundle = new Bundle();
bundle.putSerializable("key", this.instalacionesConCategorias);
fragment.setArguments(bundle);
FragmentManager fragmentManager = getFragmentManager();

FragmentTransaction mFragmentTransaction = fragmentManager.beginTransaction();
mFragmentTransaction.addToBackStack(null);
mFragmentTransaction.replace(R.id.main_frame_container, fragment, "ACTIVIDADES").commit();

在Fragment [4]

And in Fragment[4]

onCreate方法:

onCreate method:

getActivity().getActionBar().setDisplayHomeAsUpEnabled(true);

但是此解决方案不起作用.

But this solution doesn't work.

如何禁用抽屉?我应该在哪里安装后退按钮?在Fragment [2]或Fragment [3]中?

How to disable the drawer? Where should I implement the back button? In Fragment[2] or Fragment[3]?

推荐答案

1. 您可以使用:

1. You can use :

mDrawerLayout.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED);

这将锁定抽屉在swipe

添加行

getActivity().getActionBar().setDisplayHomeAsUpEnabled(true);

在活动"中，它使所有片段都像片段1、2、3和4.可能是您的情况，片段4与片段2来自不同的活动.因此，按后退按钮不起作用

in Activity which makes all fragments like Fragment 1, 2,3 and 4. May be in your case, Fragment 4 is from differenct activity than Fragment 2. So, back button press is not working

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