工具栏导航汉堡包图标丢失

Question

我正在寻找一种使用 Drawer/DrawerToggle 并使用 Android 中包含的默认图标来显示汉堡包图标的方法

通过设置 getSupportActionBar().setDisplayHomeAsUpEnabled(true); 它显示后退箭头而不是汉堡包。 Whosebug 上的其他 post（如 this or this）使用 DrawerLayout 或自定义可绘制对象。我在 Android 源上找不到汉堡包图标的矢量或 png。

你知道如何在 android/support 库中找到原始的汉堡包图标吗？（或如何显示它）

注意：矢量图和png可以在google.com/design网站上找到： http://www.google.com/design/spec/resources/sticker-sheets-icons.html#

在我的activity

mToolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(mToolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);

mToolbar.setNavigationOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        Log.d(LOG_TAG, "navigation clicked");
    }
});

布局文件

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

Styles.xml

<!-- Base application theme. -->
<style name="Theme.AppTheme" parent="Theme.AppCompat.Light.NoActionBar">


    <item name="colorPrimary">@color/primaryDef</item>
    <item name="colorPrimaryDark">@color/primaryDarkDef</item>
    <item name="colorAccent">@color/primaryDef</item>

    <!-- Remove the actionbar shadow-->
    <item name="android:windowContentOverlay">@null</item>
</style>

Answer 1

可以隐藏后退箭头使用

getSupportActionBar().setDisplayHomeAsUpEnabled(false);
getSupportActionBar().setHomeButtonEnabled(false);

然后在网页中找到汉堡图标 ->hamburger

最后，使用操作栏方法在您的项目中设置此可绘制对象：

getSupportActionBar().setLogo(R.drawable.hamburger_icon);

Answer 2

如果您想使用与棒棒糖相同的抽屉，那么让我告诉您那不是静态图像。该图像由名为 DrawerArrowDrawableToggle 的 class 实时绘制。所以没有 "hamburger" 图标。

但是，如果您想要没有动画的汉堡包图标，可以在这里找到：

https://material.io/tools/icons/?icon=menu&style=baseline

Answer 3

要获得动画汉堡包图标，您应该使用 DrawerLayout 和 ActionBarDrawerToggle，并为 ActionBar 和 ActionBarDrawerToggle 启用图标。

示例：

Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
DrawerLayout drawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle mDrawerToggle;

setSupportActionBar(toolbar);
final ActionBar actionBar = getSupportActionBar();

if (actionBar != null)
{
   actionBar.setDisplayHomeAsUpEnabled(true);
   mDrawerToggle = new ActionBarDrawerToggle(this, drawerLayout, toolbar, R.string.hello_world, R.string.hello_world)
   {

      public void onDrawerClosed(View view)
      {
         supportInvalidateOptionsMenu();
         //drawerOpened = false;
      }

      public void onDrawerOpened(View drawerView)
      {
         supportInvalidateOptionsMenu();
         //drawerOpened = true;
      }
   };
   mDrawerToggle.setDrawerIndicatorEnabled(true);
   drawerLayout.setDrawerListener(mDrawerToggle);
   mDrawerToggle.syncState();
}

此外，您需要将这些方法添加到您的 Activity:

@Override
protected void onPostCreate(Bundle savedInstanceState)
{
    super.onPostCreate(savedInstanceState);
    mDrawerToggle.syncState();
}

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

Answer 4

我遇到了同样的问题。获取ToolBar然后设置导航图标

final android.support.v7.widget.Toolbar toolbar = (android.support.v7.widget.Toolbar) findViewById(R.id.toolbar);
toolbar.setNavigationIcon(R.drawable.blablabla);

Answer 5

也许你可以试试这个，但是你会失去箭头和汉堡包图标之间的动画

@Override
protected void onCreate(Bundle arg0) {
    super.onCreate(arg0);
    super.setContentView(R.layout.activity_menu_drawer_left);

_drawerToggle = new ActionBarDrawerToggle(this, _drawerLayout, R.string.drawer_opened, R.string.drawer_closed) {
        public void onDrawerOpened(View drawerView) {
            super.onDrawerOpened(drawerView);
            changeDrawerIconOnDrawerClick(R.drawable.abc_ic_ab_back_mtrl_am_alpha);
        }

        /** Called when a drawer has settled in a completely closed state. */
        public void onDrawerClosed(View view) {
            super.onDrawerClosed(view);
            changeDrawerIconOnDrawerClick(R.drawable.ic_drawer);
        }
    };

     //to change default icon to hamburger item initially
    changeDrawerIconOnDrawerClick(R.drawable.ic_drawer);    }



private void changeDrawerIconOnDrawerClick(int resourceId) {
    //Drawable icon = ContextCompat.getDrawable(getApplicationContext(), resourceId);
    Drawable icon = ResourcesCompat.getDrawable(getResources(), resourceId, null);
    icon.setColorFilter(getResources().getColor(R.color.white), PorterDuff.Mode.SRC_ATOP);
    _drawerToggle.setDrawerIndicatorEnabled(false);
    _drawerToggle.setHomeAsUpIndicator(icon);
}

Answer 6

这是对我有用的最简单的解决方案。

ActionBarDrawerToggle 有两种类型的构造函数。其中之一以 toolbar 作为参数。使用它（下面的第二个）来获得动画汉堡包。

ActionBarDrawerToggle(this, mDrawerLayout, R.string.content_desc_drawer_open, 
R.string.content_desc_drawer_close);

ActionBarDrawerToggle(this, mDrawerLayout, toolbar, R.string.content_desc_drawer_open, 
R.string.content_desc_drawer_close);`  //use this constructor

Answer 7

我遇到了同样的问题，我在这里找到了最简单的解决方案：

appcompatv7-v21-navigation-drawer-not-showing-hamburger-icon

我所要做的就是打电话：

mDrawerToggle.syncState();

Answer 8

用您自己的可绘制对象替换默认的向上箭头

getSupportActionBar().setHomeAsUpIndicator(R.drawable.hamburger);

Answer 9

    Toolbar mToolbar = (Toolbar) findViewById(R.id.toolbar);
    mToolbar.setTitle("title");
    setSupportActionBar(mToolbar);
    getSupportActionBar().setDisplayHomeAsUpEnabled(true); 
    getSupportActionBar().setHomeButtonEnabled(true);
    getSupportActionBar().setHomeAsUpIndicator(R.drawable.ic_list);

Answer 10

只需在您的 onCreate 方法中添加以下内容，

if (getSupportActionBar() != null) {
            getSupportActionBar().setDisplayHomeAsUpEnabled(true);
            getSupportActionBar().setHomeButtonEnabled(true);
        }

        ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
                this, mDrawer, mToolbar, R.string.home_navigation_drawer_open, R.string.home_navigation_drawer_close) {

            public void onDrawerClosed(View view) {
                super.onDrawerClosed(view);
                invalidateOptionsMenu();
            }

            public void onDrawerOpened(View drawerView) {
                super.onDrawerOpened(drawerView);
                invalidateOptionsMenu();
            }

            @Override
            public void onDrawerSlide(View drawerView, float slideOffset) {
                super.onDrawerSlide(drawerView, slideOffset);
            }
        };
        mDrawer.addDrawerListener(toggle);
        toggle.syncState();

并在 strings.xml、

<string name="home_navigation_drawer_open">Open navigation drawer</string>
<string name="home_navigation_drawer_close">Close navigation drawer</string>

Answer 11

在 MyActionBarDrawerToggle 中使用此构造函数：

    public MyActionBarDrawerToggle(AppCompatActivity host, DrawerLayout drawerlayout, SupportToolbar toolbar, int openedResource, int closedResource)
        : base(host, drawerlayout, toolbar, openedResource, closedResource)
    {
        mHostActivity = host;
        mOpenedResource = openedResource;
        mClosedResource = closedResource;
    }

并在 mainActivity 中调用此方法（使用 AppCompatActivity）

        mDrawerToggle = new MyActionBarDrawerToggle(
            this,                           //Host Activity
            mDrawerLayout,                  //DrawerLayout
            mToolbar,                       //Toolbar
            Resource.String.openDrawer,     //Opened Message
            Resource.String.closeDrawer     //Closed Message
        );


        mDrawerLayout.AddDrawerListener(mDrawerToggle);
        SupportActionBar.SetHomeButtonEnabled(true);
        SupportActionBar.SetDisplayShowTitleEnabled(true);
        mDrawerToggle.DrawerIndicatorEnabled = true;
        mDrawerToggle.SyncState();

Answer 12

在onCreate()中：

    setSupportActionBar(toolbar);
    ActionBar actionBar = getSupportActionBar();
    drawerToggle = new ActionBarDrawerToggle(this, drawerLayout, toolbar, R.string.open, R.string.close) {
        @Override
        public void onDrawerClosed(View drawerView) {
            super.onDrawerClosed(drawerView);
            supportInvalidateOptionsMenu();
        }

        @Override
        public void onDrawerOpened(View drawerView) {
            super.onDrawerOpened(drawerView);
            supportInvalidateOptionsMenu();
        }
    };
    drawerLayout.setDrawerListener(drawerToggle);


    drawerToggle.setToolbarNavigationClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Backstack.get(MainActivity.this).goBack();
        }
    });
    //actionBar.setHomeAsUpIndicator(R.drawable.ic_menu);
    //getSupportActionBar().setDisplayHomeAsUpEnabled(false);
    actionBar.setDisplayHomeAsUpEnabled(false);
    actionBar.setHomeButtonEnabled(true);

并且在设置UP导航时：

private void setupViewsForKey(Key key) {
    if(key.shouldShowUp()) {
        drawerToggle.setDrawerIndicatorEnabled(false);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    }
    else {
        getSupportActionBar().setDisplayHomeAsUpEnabled(false);
        drawerToggle.setDrawerIndicatorEnabled(true);
    }
    drawerToggle.syncState();

Answer 13

您可以像这样尝试为汉堡包图标制作自己的可绘制对象。

<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="24dp"
    android:height="24dp"
    android:viewportHeight="24.0"
    android:viewportWidth="24.0">
    <path
        android:fillColor="#ffffff"
        android:pathData="M3,18h18v-2L3,16v2zM3,13h18v-2L3,11v2zM3,6v2h18L21,6L3,6z" />
</vector>

然后在您的 fragment/activity、

getSupportActionBar().setHomeAsUpIndicator(R.drawable.as_above);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);

对于其他可绘制对象，这可能会有所帮助：https://github.com/google/material-design-icons/blob/master/navigation/drawable-anydpi-v21/

Answer 14

为此你只需要写入一些行

   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.setDrawerIndicatorEnabled(true);
   toggle.syncState();

toggle.setDrawerIndicatorEnabled(true); 如果这是假的，请将其设为真或删除此行

Answer 15

 ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(this, drawer, toolbar,
            R.string.navigation_drawer_open, R.string.navigation_drawer_close);
    drawer.addDrawerListener(toggle);
    toggle.syncState();

对我有用

Answer 16

在 JetPack 中它对我有用

NavigationUI.setupWithNavController(vb.toolbar, nav)
vb.toolbar.navigationIcon = ResourcesCompat.getDrawable(resources, R.drawable.icon_home, null)

工具栏导航汉堡包图标丢失

Toolbar Navigation Hamburger Icon missing

android

android-support-library

material-design

android-toolbar