如何使底部导航显示除中心项目菜单以外的图标和文本的菜单项只显示图标？

Question

我想创建底部导航栏显示菜单项图标和除中心项外的文本。例如。我已附加图像

Answer 1

尝试以下代码：

XML文件：

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout 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:orientation="vertical"> 

    <android.support.v7.widget.Toolbar 
     android:id="@+id/toolbar" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:layout_gravity="top" 
     android:background="@color/gray" 
     android:foregroundGravity="top" 
     android:gravity="top"> 

    </android.support.v7.widget.Toolbar> 

    <FrameLayout 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:layout_weight="1"> 


     <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" 
      android:id="@+id/fragment_container" 
      android:layout_width="match_parent" 
      android:layout_height="match_parent" /> 

    </FrameLayout> 


    <LinearLayout 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:orientation="horizontal"> 

     <android.support.design.widget.BottomNavigationView 
      android:id="@+id/bottomnav" 
      android:layout_width="0dp" 
      android:layout_height="56dp" 
      android:layout_weight="1" 
      android:background="null" 
      app:itemIconTint="@color/green" 
      app:itemTextColor="@color/green" 
      app:menu="@menu/main"> 


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

     <ImageView 
      android:layout_width="0dp" 
      android:layout_height="56dp" 
      android:layout_weight="0.5" 
      android:src="@drawable/camera" /> 

     <android.support.design.widget.BottomNavigationView 
      android:id="@+id/bottomnav1" 
      android:layout_width="0dp" 
      android:layout_height="56dp" 
      android:layout_weight="1" 
      android:background="null" 
      app:itemIconTint="@color/green" 
      app:itemTextColor="@color/green" 
      app:menu="@menu/main"> 


     </android.support.design.widget.BottomNavigationView> 
    </LinearLayout> 
</LinearLayout> 

Helper类：

public class BottomNavigationViewHelper { 
    public static void disableShiftMode(BottomNavigationView view) { 
     BottomNavigationMenuView menuView = (BottomNavigationMenuView) view.getChildAt(0); 
     try { 
      Field shiftingMode = menuView.getClass().getDeclaredField("mShiftingMode"); 
      shiftingMode.setAccessible(true); 
      shiftingMode.setBoolean(menuView, false); 
      shiftingMode.setAccessible(false); 
      for (int i = 0; i < menuView.getChildCount(); i++) { 
       BottomNavigationItemView item = (BottomNavigationItemView) menuView.getChildAt(i); 
       //noinspection RestrictedApi 
       item.setShiftingMode(false); 
       // set once again checked value, so view will be updated 
       //noinspection RestrictedApi 
       item.setChecked(item.getItemData().isChecked()); 
      } 
     } catch (NoSuchFieldException e) { 
      Log.e("BNVHelper", "Unable to get shift mode field", e); 
     } catch (IllegalAccessException e) { 
      Log.e("BNVHelper", "Unable to change value of shift mode", e); 
     } 
    } 
} 

在活动：

BottomNavigationView bnav = (BottomNavigationView) findViewById(R.id.bottomnav); 
BottomNavigationViewHelper.disableShiftMode(bnav); 

菜单文件：

<item 
    android:id="@+id/place" 
    android:icon="@drawable/ic_place_black_24dp" 
    android:title="Place"/> 

<item 
    android:id="@+id/home" 
    android:icon="@drawable/ic_account_balance_black_24dp" 
    android:title="Home"/>