android 如何从片段活动中设置工具栏中的图像和文本

Question

我需要在导航抽屉的工具栏右侧设置一个 imageView 和 Textview activity.But 问题是每个片段的 imageview 和 textview 的值都不同 activity。而且我还需要使工具栏 transparent.I 使用默认导航抽屉 activity.Can 有人帮忙吗？任何帮助将不胜感激。

app_bar_main.xml 文件

<? 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);
    }
}

我的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("");
    }
}

Answer 1

你好试试这个如果有帮助的话

1) 将此方法放入您的 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) 使用

从片段调用方法更新方法

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

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