Question

我的基本活动显示工具栏，但栏上没有标题，汉堡或溢出菜单。我无法弄清楚如何让菜单显示。任何帮助将非常感激！我在调试时没有在基本活动中调用onCreateOptionsMenu（）。

BaseActivity

public abstract class BaseActivity extends AppCompatActivity
    implements NavigationView.OnNavigationItemSelectedListener {


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_base);

        Toolbar toolbar = findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        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.addDrawerListener(toggle);
        toggle.syncState();

        NavigationView navigationView = (NavigationView) 
        findViewById(R.id.nav_view);
        navigationView.setNavigationItemSelectedListener(this);
    }

    @Override
    public void setContentView(int layoutResID) {
        final DrawerLayout fullView = (DrawerLayout) 
        getLayoutInflater().inflate(R.layout.activity_base, null);
        FrameLayout activityContainer = (FrameLayout) 
        fullView.findViewById(R.id.activity_content);
        getLayoutInflater().inflate(layoutResID, activityContainer, true);
        super.setContentView(fullView);
   }

   @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) {
       super.onCreateOptionsMenu(menu);
       getMenuInflater().inflate(R.menu.main, menu);
       return super.onCreateOptionsMenu(menu);
   }
}

myActivity

public class myActivity extends BaseActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_scan_item);
    }
}

知道我缺少什么来使这项工作？我已经读完了，我真的很难解决这个问题！

我的app_bar_main.xml

<?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"
    tools:context="com.mpd.sfs.BaseActivity">

    <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/AppTheme.AppBarOverlay">

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

    </android.support.design.widget.AppBarLayout>
</android.support.design.widget.CoordinatorLayout>

onCreateOptionsMenu（）覆盖未在BaseActivity中调用

0 个答案: