how to set toolbar on FragmentActivity?

问题:

I want to set toolbar on my activity which extends FragmentActivity. I know that for use setSuppoertActionBar(toolbar) method we extends AppCompatActivity instead of FragmentActivity but I override the onMenuItemSelected(int featureId, MenuItem item) method which is final in AppCompatActivity and final method cannot override. so I'm restricted to extends FragmentActivity.

Here is my code:

public class MainActivity extends FragmentActivity
{
    @Override
    protected void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Toolbar toolbar = (Toolbar)findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);   -> error is here
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) 
    {
       // Inflate the menu
       getMenuInflater().inflate(R.menu.menu_main, menu);
       return true;
    }

    @Override
    public boolean onMenuItemSelected(int featureId, MenuItem item) {
        switch(item.getItemId()){
            case R.id.action_search:
                onSearchRequested();
                break;
        }
        return super.onMenuItemSelected(featureId, item);
    }

I saw many answers related to that question but everyone says extends AppCompatActivity instead of FragmentActivity but I want to set toolbar as well as override onMenuItemSelected(int featureId, MenuItem item) method.

what should I do, please help.

回答1:

This thing is good when you are using NavigationDrawer use this:-

 toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        getSupportActionBar().setDisplayShowTitleEnabled(false);

then set Toolbar Title according to different fragment with different Titles in onNavigationItemSelected :-

@Override
    public boolean onNavigationItemSelected(MenuItem item) {
        // Handle navigation view item clicks here.

        sfm = getSupportFragmentManager();
        Fragment fragment = new Fragment();
        int id = item.getItemId();

        if (id == R.id.nav_id) {
            fragment = new YourFragment();
            toolbar.setTitle("SET TOOLBAR NAME");
        }else if (id == R.id.nav_id2) {
            fragment = new YourFragment();
            toolbar.setTitle("SET TOOLBAR NAME");
        } 

For single fragment, first customize your style.xml like this :-

<style name="YourStyleName" parent="Theme.AppCompat.Light.DarkActionBar">
// ToDo as you want to do or as per your requirement

</style>

then apply into your custom toolbar:-

<android.support.v7.widget.Toolbar
    android:id="@+id/toolbar"
    android:layout_width="match_parent"
    android:layout_height="?attr/actionBarSize"
    android:background="?attr/colorPrimary"
    app:popupTheme="@style/YourStyleName" >

  // ...........


</android.support.v7.widget.Toolbar>

回答2:

You can also create your own toolbar:

First set up the main theme to extend Theme.AppCompat.Light.NoActionBar

<style name="style_1" parent="Theme.AppCompat.Light.NoActionBar">
    <!-- Customize your theme here. -->

</style>

Remember to apply the theme:

@Override
protected void onCreate(Bundle savedInstanceState) {
    this.setTheme(R.style.style_1);
    // ...
}

then in your Activity's xml you can set your own custom toolbar:

<include layout="@layout/my_toolbar"/>

where @layout/my_toolbar may look like this:

<android.support.v7.widget.Toolbar 
    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="@dimen/toolbar_height"
    app:contentInsetStart="0dp"
    app:layout_collapseParallaxMultiplier="1.0">

    <!-- insert your views here -->
</android.support.v7.widget.Toolbar>

回答3:

First set style as  
<style name="style_1" parent="Theme.AppCompat.Light.NoActionBar">
    <!-- Customize your theme here. -->

</style>
then

Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
ActionBar actionBar = getSupportActionBar();
        actionBar.setTitle("Home");

回答4:

You should extend your Activity from AppCompatActivity as this includes support for Fragments and the Toolbar. And then override the

onCreateOptionsMenu() and onOptionsItemSelected() methods

You shouldn't be overriding

onMenuItemSelected()

public class MainActivity extends AppCompatActivity { ...

    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);
    FragmentTransaction ft = getSupportFragmentManager.beginTransaction();
    ....


    ....
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
      ...
         ...
    }


   @Override
   public boolean onOptionsItemSelected(MenuItem item) {

   ...
  }