Question

我有一种情况，我需要在从对该数据库进行一些修改的Activity返回时为片段设置不同的布局。

如何在该片段的onResume（）方法中为片段设置不同的布局？

我基本上需要将完全相同的代码复制到onResume方法，但问题在于这部分代码，我无法理解如何在on onResume（）方法中实现它：

rootView = inflater.inflate(R.layout.expandable_list, container, false);

以下是OnCreateView方法的代码：

@Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {

        context = getActivity().getApplicationContext();

        dataSource = new ExpensesDataSource(context);
        dataSource.open();

        //if Expenses dataSource is not empty create the list of expenses and set a listview
        if (dataSource.getAllExpenses().size() != 0) {
            rootView = inflater.inflate(R.layout.expandable_list, container, false);

            //prepare the list of Expenses to be put into an adapter
            preparedListData = prepareListData();

            //load the sorted list of lists of expense into the adapter
            listAdapter = new ExpandableListAdapter(context, preparedListData);

            expListView = (ExpandableListView) rootView.findViewById(R.id.lvExp);
            expListView.setAdapter(listAdapter);
            expListView.setOnChildClickListener(this);
        }
        //else show a layout saying the list is empty
        else {
            rootView = inflater.inflate(R.layout.expandable_list_empty, container, false);
        }

        return rootView;
    }

Answer 1

我找到了解决这个问题的方法。这有点讨厌，但这就是我所能做的。假设您在活动中保存了当前选择的片段，那么您需要在活动onResume中执行此操作：

if(currentFragment instanceof YourDynamiclyChangingFrament) {
            FragmentManager fm = getSupportFragmentManager();
            FragmentTransaction transaction = fm.beginTransaction();
            YourDynamiclyChangingFrament yourDynamiclyChangingFrament= new YourDynamiclyChangingFrament();

            transaction.replace(R.id.container, yourDynamiclyChangingFrament, YourDynamiclyChangingFrament.class.getSimpleName());
            transaction.commit();
        }

在Fragment的onResume（）方法中设置不同的布局

1 个答案: