Question

我目前正在创建一个不使用片段的导航菜单。我似乎创建了打开类的工作系统，并使用BaseActivity将导航栏保存在每个阶段，并将其继承到需要抽屉的类中。然而，加载应用程序似乎是3栏＆＃39;汉堡＆＃39;图标不存在，顶部的工具栏也不存在（见照片）。导航栏似乎正常工作，因为我可以从左侧滑动并单击以加载其他类。我觉得onCreate() BaseActivity中的import android.content.Intent; import android.os.Bundle; import android.support.design.widget.NavigationView; import android.support.v4.widget.DrawerLayout; import android.support.v7.app.ActionBarDrawerToggle; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.Toolbar; import android.view.MenuItem; public class BaseActivity extends AppCompatActivity { DrawerLayout drawerLayout; ActionBarDrawerToggle actionBarDrawerToggle; Toolbar toolbar; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); toolbar = (Toolbar) findViewById(R.id.toolbar); setSupportActionBar(toolbar); NavigationView navigationView = (NavigationView) findViewById(R.id.navigation_view); drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout); actionBarDrawerToggle = new ActionBarDrawerToggle(this, drawerLayout, toolbar, R.string.drawer_open, R.string.drawer_closed); drawerLayout.addDrawerListener(actionBarDrawerToggle); navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() { @Override public boolean onNavigationItemSelected(MenuItem item) { Intent anIntent; switch (item.getItemId()) { case R.id.nav_homepage: anIntent = new Intent(getApplicationContext(), homepage.class); startActivity(anIntent); drawerLayout.closeDrawers(); break; case R.id.nav_add_roster: anIntent = new Intent(getApplicationContext(), add_roster.class); startActivity(anIntent); drawerLayout.closeDrawers(); break; case R.id.nav_check_schedule: anIntent = new Intent(getApplicationContext(), schedule.class); startActivity(anIntent); drawerLayout.closeDrawers(); break; } return false; } }); } }遗漏了一些内容，但谷歌搜索似乎无法找到解决方案。

当前问题的图片：

导航栏的图像在后台使用问题：

这是我的基础活动：

import android.os.Bundle;
import android.widget.FrameLayout;

public class homepage extends BaseActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        FrameLayout contentFrameLayout = (FrameLayout) findViewById(R.id.content_frame); //Remember this is the FrameLayout area within your content_main.xml
        getLayoutInflater().inflate(R.layout.homepage, contentFrameLayout);
    }
}

这是我的主页，这是最初加载的内容：

    <?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout 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:id="@+id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:openDrawer="start">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

        <FrameLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:id="@+id/content_frame"/>

    </LinearLayout>

    <android.support.design.widget.NavigationView
        android:id="@+id/navigation_view"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:fitsSystemWindows="true"
        app:headerLayout="@layout/nav_header_main"
        app:menu="@menu/activity_main_drawer" />

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

这是我的活动主要内容：

<form action="upload.php" class="dropzone" method="post" enctype="multipart/form-data">
  <div class="fallback">
    <input name="file" type="file" multiple />
  </div>

    <div class="dz-message needsclick">Drop files here or click to upload.</div>

</form>

Answer 1

您可以尝试此操作，在BaseActivity中添加以下代码：

    @Override
    public void onPostCreate(Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);
        actionBarDrawerToggle.syncState();
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        actionBarDrawerToggle.onConfigurationChanged(newConfig);
    }

编辑：

在BaseActivity的onCreate功能中启用主页按钮：

getSupportActionBar().setHomeButtonEnabled(true);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);

xml中缺少工具栏布局：

<android.support.v4.widget.DrawerLayout 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:id="@+id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:openDrawer="start">

    <android.support.design.widget.CoordinatorLayout
        android:id="@+id/rootLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="#eeeeee">

        <android.support.design.widget.AppBarLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <android.support.v7.widget.Toolbar
                android:id="@+id/toolbar"
                android:layout_width="match_parent"
                android:layout_height="?attr/actionBarSize"
                android:background="?attr/colorPrimary"
                android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
                app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />

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

        <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

            <FrameLayout
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:id="@+id/content_frame"/>

        </LinearLayout>

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

    <android.support.design.widget.NavigationView
        android:id="@+id/navigation_view"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:fitsSystemWindows="true"
        app:headerLayout="@layout/nav_header_main"
        app:menu="@menu/activity_main_drawer" />
</android.support.v4.widget.DrawerLayout>

希望这会有所帮助;

抱歉我的英文。

Answer 2

试试这种方式，

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout 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:id="@+id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:openDrawer="start">


<include
    layout="@layout/app_bar_toolbar"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

    <android.support.design.widget.NavigationView
        android:id="@+id/navigation_view"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:fitsSystemWindows="true"
        app:headerLayout="@layout/nav_header_main"
        app:menu="@menu/activity_main_drawer" />

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

并在app_bar_toolbar.xml中，

<?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"
    android:layout_width="match_parent"
    android:layout_height="match_parent">


    <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

        <RelativeLayout
            android:id="@+id/relative_tool_bar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <android.support.v7.widget.Toolbar
                android:id="@+id/toolbar"
                android:layout_width="match_parent"
                android:layout_height="?attr/actionBarSize">


            </android.support.v7.widget.Toolbar>
        </RelativeLayout>
    </android.support.design.widget.AppBarLayout>

    <include layout="@layout/content_main" />
</android.support.design.widget.CoordinatorLayout>

并在content_main.xml中使用此功能。

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:context="com.esec_0052.fingertips.FingerTipMainActivity"
    tools:showIn="@layout/app_bar_finger_tip_main">


    <FrameLayout
        android:id="@+id/frame_parent"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</RelativeLayout>

尽管工作导航抽屉，抽屉布局汉堡包和工具栏仍然不可见？

2 个答案: