android - 单击按钮时隐藏/显示选项菜单

Question

我在 fragment 中使用了一些按钮。当我检查这些按钮时，应显示选项菜单。当我取消选中它时，它应该隐藏选项菜单。我应该怎么做

 @Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setHasOptionsMenu(true);
    mLocation = getArguments().getString(Beco.EXTRA_LOCATION);
    listMalls = temporaryModelCache.getDealData().getFacets().getArea();
    listCategories = temporaryModelCache.getDealData().getFacets().getCategories();
    listGender = temporaryModelCache.getDealData().getFacets().getAgeGroup();
    try {
        MainActivity activity = (MainActivity) getActivity();
        if (activity != null) activity.hideBottomBar();
    } catch (Exception ignored) {

    }
}

@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
    menu.clear();
    inflater.inflate(R.menu.forgot_password, menu);
    mResetButton = menu.findItem(R.id.action_reset);
    super.onCreateOptionsMenu(menu, inflater);
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    int itemId = item.getItemId();
    switch (itemId) {
        case  R.id.action_reset:
            Log.d(TAG, "onClick");
            resetFilter();
            return true;
    }

    return super.onOptionsItemSelected(item);
}

这是我需要隐藏/显示选项菜单的事件

private void checkSelected() {
    if (!mapMall.isEmpty() || !mapGender.isEmpty() || !mapCategory.isEmpty()) {
        footerTab.setVisibility(View.VISIBLE);

    } else {
        footerTab.setVisibility(View.GONE);
    }
}

当 if (!mapMall.isEmpty() || !mapGender.isEmpty() || !mapCategory.isEmpty()) 我需要显示操作菜单并在 else 我需要隐藏选项菜单的部分!我怎样才能做到这一点？

Answer 1

调用 invalidateOptionsMenu() 隐藏和显示选项菜单

 Boolean Isreset= false;

@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
    menu.clear();
    inflater.inflate(R.menu.forgot_password, menu);
    mResetButton = menu.findItem(R.id.action_reset);
    if(!Isreset)
    {
        mResetButton.setVisibility(true);
    }else{
        mResetButton.setVisibility(false);
    }
    super.onCreateOptionsMenu(menu, inflater);
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    int itemId = item.getItemId();
    switch (itemId) {
        case  R.id.action_reset:
            Log.d(TAG, "onClick");
            resetFilter();
            Isreset= true;
            invalidateOptionsMenu();

            return true;
    }

    return super.onOptionsItemSelected(item);
}