为什么看到两个工具栏,当我创建一个具有抽屉式导航的应用程序?(Why Do see two tool

2019-09-28 18:20发布

我创建了具有抽屉式导航的应用程序,它工作正常,但唯一的问题是,我看到了两个工具栏。 在其中有Actionbartoggle按钮,另一类则是默认的。 现在,我已经看到了教程使用的工具栏在抽屉布局,显然导航内容从菜单来的主要内容。 现在的问题是,我认为我们必须通过在Actionbardrawertoggle的构造工具栏引用,我通过后妥善它工作正常,但我看到两个工具栏/为其他动作。 基本上我的问题是如何获取的主要动作栏上的切换按钮,并没有得到第二工具条产生的? 我已经尝试使用

<style name="MyTheme" parent="android:Theme.Material.Light.NoActionBar">

它帮助我躲上动作条,但我不认为这是做的很好的方式。 我上传我的输出和代码的截图:

<android.support.v4.widget.DrawerLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/drawerLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true">

    <!-- Page Content -->
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentTop="true"
            android:background="@color/colorPrimary"
            android:minHeight="?attr/actionBarSize"
            app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"/>
    </LinearLayout>

    <!-- Navigation View -->
    <android.support.design.widget.NavigationView
        android:id="@+id/navigationView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_gravity="start"

        app:itemTextColor="#5DADE2"

        app:menu="@menu/drawer_items"/>

</android.support.v4.widget.DrawerLayout>

Mainactivity:

 import android.content.DialogInterface;
    import android.content.Intent;
    import android.os.Bundle;
    import android.support.v7.app.AlertDialog;
    import android.support.v7.app.AppCompatActivity;
    import android.view.Menu;
    import android.view.MenuInflater;
    import android.view.MenuItem;
    import android.view.View;
    import android.widget.Button;
    import android.support.annotation.NonNull;
    import android.support.design.widget.NavigationView;
    import android.support.v4.view.GravityCompat;
    import android.support.v4.widget.DrawerLayout;
    import android.support.v7.app.ActionBarDrawerToggle;
    import android.support.v7.app.AppCompatActivity;
    import android.os.Bundle;
    import android.support.v7.widget.Toolbar;
    import android.view.MenuItem;
    import android.view.View;
    import android.view.Window;
    import android.widget.Toast;    
    import java.util.HashMap;    
    import android.content.DialogInterface;
    import android.content.Intent;
    import android.support.v7.app.AlertDialog;
    import android.support.v7.app.AppCompatActivity;
    import android.os.Bundle;
    import android.view.View;
    import android.widget.Button;    
    import java.util.HashMap;

public class MainActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener{
    SessionManager session;

    private Toolbar mToolbar;
    private DrawerLayout mDrawerLayout;
    ActionBarDrawerToggle drawerToggle;

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

        setupToolbarMenu();
        setupNavigationDrawerMenu();    

    }


    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle item selection
        switch (item.getItemId()) {
            case R.id.lg:

                session.logoutUser();
                return true;

            default:
                return super.onOptionsItemSelected(item);
        }
    } private void setupToolbarMenu() {

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

        mToolbar.setTitle("Home Page");
    }

    private void setupNavigationDrawerMenu() {

        NavigationView navigationView = (NavigationView) findViewById(R.id.navigationView);
        mDrawerLayout = (DrawerLayout) findViewById(R.id.drawerLayout);
        navigationView.setNavigationItemSelectedListener(this);
        navigationView.setItemIconTintList(null);

        drawerToggle = new ActionBarDrawerToggle(this,
                mDrawerLayout,mToolbar,
                R.string.drawer_open,
                R.string.drawer_close);

        mDrawerLayout.addDrawerListener(drawerToggle);

        drawerToggle.syncState();

    }  @Override // Called when Any Navigation Item is Clicked
    public boolean onNavigationItemSelected(@NonNull MenuItem menuItem) {

        closeDrawer();

        switch (menuItem.getItemId()) {

            case R.id.home:
                // Put your Item specific Code here
                break;

            case R.id.invoice:
                Intent intent = new Intent(this,details.class);
                startActivity(intent);
                // Put your item specific Code here
                break;
        }

        return true;
    }

    // Close the Drawer
    private void closeDrawer() {
        mDrawerLayout.closeDrawer(GravityCompat.START);
    }

    // Open the Drawer
    private void showDrawer() {
        mDrawerLayout.openDrawer(GravityCompat.START);
    }


    @Override
    public void onBackPressed() {
        if (mDrawerLayout.isDrawerOpen(GravityCompat.START))
            closeDrawer();
        else{
        new AlertDialog.Builder(this).setIcon(android.R.drawable.ic_dialog_alert).setTitle("Exit")
                .setMessage("Are you sure?")
                .setPositiveButton("yes", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {

                        Intent intent = new Intent(Intent.ACTION_MAIN);
                        intent.addCategory(Intent.CATEGORY_HOME);
                        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                        startActivity(intent);
                        finish();
                    }
                }).setNegativeButton("no", null).show();}
    }     
}

我styles.xml文件:

<resources>
        <!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
    <!-- Customize your theme here. -->
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
    <item name="colorAccent">@color/colorAccent</item>
</style>     
    </resources>

我知道这可能不是一些使用的,但这里是我的清单文件过:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android">

    <uses-permission android:name="android.permission.INTERNET"/>

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">

        <activity android:name=".details" />
        <activity android:name=".Login"
            android:label="Login"/>

        <activity android:name=".MainActivity" />
        <activity android:name=".recycler" />
        <activity android:name=".RegisterActivity" />
        <activity android:name=".SplashScreen">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>        
    </application>    
</manifest>

而这里的我得到的输出:

Answer 1:

尝试按照这个例子: https://developer.android.com/training/appbar/setting-up.html

在那里,你会发现这一点:

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_my);
    Toolbar myToolbar = (Toolbar) findViewById(R.id.my_toolbar);
    setSupportActionBar(myToolbar);
    }

你缺少的东西是: setSupportActionBar(myToolbar);



文章来源: Why Do see two toolbars when I created an app that has a navigation drawer?