How to set images and text in toolbar from fragment activities in android

问题

I need to set one imageView and Textview on the right side of toolbar in the navigationDrawer activity.But the thing is that the values for imageview and textviews are different for each fragment activity. And also I need to make the toolbar transparent.I am using default navigation drawer activity.Can anyone help? Any help will be appreciated.

app_bar_main.xml file

<? xml version = "1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:context="com.unitybees.photo.MainActivity">
    <android.support.design.widget.AppBarLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:theme="@style/AppTheme.AppBarOverlay"
            android:background="@null">
        <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/AppTheme.PopupOverlay">
            <LinearLayout
                android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:orientation="horizontal">
                <ImageView android:id="@+id/right_icon"
                        android:layout_gravity="right"
                        android:layout_width="40dp"
                        android:layout_height="40dp"/>
                <TextView android:id="@+id/right_text"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_gravity="right"
                        android:textColor="#000000"/>
            </LinearLayout>
        </android.support.v7.widget.Toolbar>
    </android.support.design.widget.AppBarLayout>
    <include layout="@layout/content_main"/>
</android.support.design.widget.CoordinatorLayout>

MainActivity.java

    public class MainActivity extends AppCompatActivity implements
        NavigationView.OnNavigationItemSelectedListener {
    public static final int right_image = 1;
    public static final int right_texts = 2;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        TextView t = (TextView) findViewById(R.id.right_text);
        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(this, drawer,
                toolbar, R.string.navigation_drawer_open,
                R.string.navigation_drawer_close);
        drawer.setDrawerListener(toggle);
        toggle.syncState();
        NavigationView navigationView = (NavigationView)
                findViewById(R.id.nav_view);
        navigationView.setNavigationItemSelectedListener(this);
        this.setTitle("");
    }

    @Override
    public void onBackPressed() {
        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        if (drawer.isDrawerOpen(GravityCompat.START)) {
            drawer.closeDrawer(GravityCompat.START);
        } else {
            super.onBackPressed();
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

    @SuppressWarnings("StatementWithEmptyBody")
    @Override
    public boolean onNavigationItemSelected(MenuItem item) {
        displaySelectedScreen(item.getItemId());
        return true;
    }

    private void displaySelectedScreen(int itemId) {
        android.support.v4.app.Fragment fragment = null;
        switch (itemId) {
            case R.id.nav_menu1:
                fragment = new Book_now();
                break;
            case R.id.nav_menu2:
                fragment = new Payment();
                break;
            case R.id.nav_menu3:
                fragment = new Account();
                break;
        }
        if (fragment != null) {
            FragmentTransactionft = getSupportFragmentManager().beginTransaction();
            ft.replace(R.id.content_frame, fragment);
            ft.commit();
        }
        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        drawer.closeDrawer(GravityCompat.START);
    }
}

my Account.java

public class Account extends android.support.v4.app.Fragment {
    TextView txt;

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        return inflater.inflate(R.layout.account, container, false);
    }

    @Override
    public void onViewCreated(View view, Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        getActivity().setTitle("");
    }
}

回答1:

Hello Try this if it may help

1) Put this method in your activity

public void initToolBar(String title) {
        toolbar = (Toolbar) findViewById(R.id.toolbar);
        toolbar.setTitle(title);

        setSupportActionBar(toolbar);

        toolbar.setNavigationIcon(R.mipmap.ic_launcher_round);
        toolbar.setNavigationOnClickListener(
        new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast.makeText(MainActivity.this, "clicking the toolbar!", Toast.LENGTH_SHORT).show();
            }
        }

        );
    }

2) To update the method from your fragment call mehtod using

((MainActivity) getActivity()).initToolBar("Fragment Title");

来源：https://stackoverflow.com/questions/44197429/how-to-set-images-and-text-in-toolbar-from-fragment-activities-in-android