DialogFragment 中的选项菜单

Question

我有两个片段，一个是列表片段，另一个是我将它用作对话框一次，作为片段我的选项菜单问题，在列表片段中有一个项目菜单给出了始终显示操作，在对话框片段中我不希望此项目可见，也不希望选项菜单也可见，我已尝试

setHasOptionMenu(false)

但它没有用，并尝试 setHasOptionMenu(true) 并清除菜单中的所有项目，但它也没有用。

此外，我的 parent activity 没有任何选项菜单代码。这是我的代码：

@SuppressLint("InflateParams")
public class FormGeneratorActivity extends DialogFragment {
Control mControl;
boolean doChangeTitle;
private boolean isDialog;
public static int CreatedNum = 0;


public static FormGeneratorActivity getInstance(Control mControl, boolean doChangeTitle) {
    FormGeneratorActivity frag = new FormGeneratorActivity();
    Bundle b = new Bundle();
    b.putParcelable("control", mControl);
    b.putBoolean("changeTitle", doChangeTitle);
    frag.setArguments(b);
    return frag;
}

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    if (getArguments() != null) {
        doChangeTitle = getArguments().getBoolean("changeTitle");
    }
    setHasOptionsMenu(false);
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    return super.onOptionsItemSelected(item);
}

@Override
public void onPrepareOptionsMenu(Menu menu) {
    menu.clear();
    activity.invalidateOptionsMenu();
    super.onPrepareOptionsMenu(menu);

}

@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
    super.onCreateOptionsMenu(menu, inflater);
}



public void setDoChangeTitle(boolean doChangeTitle) {
    this.doChangeTitle = doChangeTitle;
}

View view;
boolean isInflated = false;
ParentActivity activity;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         final Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    if (view == null) {
        mControl = getArguments().getParcelable("control");
        view = inflater.inflate(R.layout.form_generator_fragment, container, false);
        container = (LinearLayout) view.findViewById(R.id.cont);
        isInflated = true;
    } else {
        if (view.getParent() != null)
            ((ViewGroup) view.getParent()).removeAllViews();
        isInflated = false;
    }

    return view;
}

String headerPageTitle = null;

@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    activity = (ParentActivity) getActivity();
    activity.getSupportActionBar().invalidateOptionsMenu();

        CreatedNum++;

}

@Override
public void onResume() {
    super.onResume();
    activity.setPageTitle(headerPageTitle);
    setHasOptionsMenu(false);
    activity.getSupportActionBar().invalidateOptionsMenu();

}


public void isDialog(boolean b) {
    isDialog = b;
}

}

Answer 1

您可以尝试像这样设置父片段：fragment.setTargetFragment(getSupportFragmentManager().findFragmentById(R.id.frame), 1);

并在您执行的子片段中（在 onAttach/onDetach 方法中） getTargetFragment().setMenuVisibility(true);

Answer 2

当您将此片段称为对话时，也许可以尝试使用对话主题之一。为此，您可以使用此构造函数：

AlertDialog.Builder(Context context, int theme)

即

AlertDialog.Builder builder = new AlertDialog.Builder(getActivity(), theme)

更多解释： Theme not applying to DialogFragment on Android

Answer 3

我发现对话框片段只需要时间来知道选项菜单不再存在，所以我不得不post在开始片段之前延迟使用处理程序

Answer 4

带有搜索 (SearchView) 操作的 DialogFragment(Fragment) 中的选项菜单：

MenuDialogFragment.class

public class MenuDialogFragment extends DialogFragment {

    Toolbar toolbar;

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

        View view = inflater.inflate(R.layout.custom_dialog_layout, container, false);

        toolbar = view.findViewById(R.id.custom_dialog_layout_toolbar);

        toolbar.inflateMenu(R.menu.menu_custom_dialog);

        Menu menu = toolbar.getMenu();
        SearchView searchView = (SearchView) menu.findItem(R.id.menu_searchview).getActionView();

        // DO whatever you need with menu items

        return view;
    }
}

menu_custom_dialog.xml

<?xml version="1.0" encoding="utf-8"?>
<menu
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    >
    <item
        android:id="@+id/menu_searchview"
        android:icon="@drawable/ic_search"
        android:title="Search"
        app:showAsAction="always|collapseActionView"
        app:actionViewClass="android.support.v7.widget.SearchView"
        />
</menu>

custom_dialog_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
>

<android.support.v7.widget.Toolbar
    android:id="@+id/custom_dialog_layout_toolbar"
    android:layout_width="match_parent"
    android:layout_height="?attr/actionBarSize"
    android:theme="@style/ThemeOverlay.AppCompat.ActionBar"
    app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
    />
</LinearLayout>

DialogFragment 中的选项菜单

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optionmenu

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