Android Toolbar Adding Menu Items for different fr

问题:

I have a toolbar as well as a navigation drawer. When I start my app, the toolbar and navigation drawer are created. When I click items in the navigation drawer, it starts new fragments and keeps the same toolbar. How do I basically add menu items to the toolbar such as search, add, edit when I start specific fragments? I don't want them at the start of the program, but created dynamically. Also, how would I be able to click these buttons and have them start other fragments. I want it so in one fragment, the edit button in the toolbar does a specific thing compared to the edit button in another fragment. Thanks!

Menu_toolbar:

<?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/edit"
    android:orderInCategory="1"
    android:title="Edit"
    app:showAsAction="always"
    android:icon="@drawable/pencil_icon"/>
<item android:id="@+id/add"
    android:orderInCategory="1"
    android:title="Add"
    app:showAsAction="always"
    android:icon="@drawable/plus_icon"/>

Toolbar:

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="55dp"
android:background="#10a1ff"
android:title="Home"
/>

回答1:

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup parent, Bundle savedInstanceState)
{
    View v = inflater.inflate(R.layout.library_fragment, parent, false);
    setHasOptionsMenu(true);
    return v;
}


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

回答2:

This is how to create menu dynamically: http://www.101apps.co.za/index.php/articles/using-toolbars-in-your-apps.html

Edited:

Toolbar actionBarToolBar = (Toolbar) findViewById(R.id.my_toobar);
setSupportActionBar(actionBarToolBar);
actionBarToolBar.setNavigationIcon(R.drawable.icon);
actionBarToolBar.setNavigationContextDescription(getResources().getString(R.string.desc);
actionBarToolBar.setLogo(R.drawable.other_icon);
actionBarToolBar.setLogoDescription(getResources().getString(R.string.other_desc);
actionBarToolBar.inflateMenu(R.menu.fragment_menu);

回答3:

The best way to do it :

1. Find toolbar in Activity and set it as supportActionBar.

Toolbar actionBarToolBar = (Toolbar) findViewById(R.id.my_toobar);
setSupportActionBar(actionBarToolBar);

2. Then It will be a piece of cake to handle option menus for different fragments over a same Activity. Do following things in each fragment as you want:

In OnCreateView Method call

setHasOptionsMenu(true);

And Lastly,

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

And to manage menu items click, we have onOptionsItemSelected:

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
        case R.id.action_search :
            Log.i("item id ", item.getItemId() + "");
        default:
            return super.onOptionsItemSelected(item);
    }
}

回答4:

Override onCreateOptionsMenu method in your every fragment.

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

回答5:

I solved this issues correctly. My solution is as following code:

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    mRootView = inflater.inflate(R.layout.fragment_order_history, container, false);
    //getActivity().invalidateOptionsMenu();


    setHasOptionsMenu(true);

    return mRootView;
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
    inflater.inflate(R.menu.main, menu);
    super.onCreateOptionsMenu(menu, inflater);
}

回答6:

I had the same issue and I wanted to replace the toolbar menu accordingly to the fragment displayed.

The problem I'm now facing is that the menu is added to the previous one.

In order to show only the menu for the fragment, I suggest:

@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
     menu.clear(); //Empty the old menu
     inflater.inflate(R.menu.menu_fragment1, menu);
     super.onCreateOptionsMenu(menu, inflater);
}

Hope it'll help.

回答7:

Below are the steps to show different menu options with different fragments.

Step1: Call setHasOptionsMenu(true)

override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        setHasOptionsMenu(true)
        super.onViewCreated(view, savedInstanceState)

    }

Step2: Inflate your fragment related option menu items.

override fun onCreateOptionsMenu(menu: Menu?, inflater: MenuInflater?) {
    // To clear previously added menu items
    menu?.clear()
    inflater?.inflate(R.menu.your_fragment_menu, menu)
    super.onCreateOptionsMenu(menu, inflater)
}