如何使底部導航顯示除中心項目菜單以外的圖標和文本的菜單項只顯示圖標？

Question

我想創建底部導航欄顯示菜單項圖標和除中心項外的文本。例如。我已附加圖像

Answer 1

嘗試以下代碼：

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類：

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); 
     } 
    } 
} 

在活動：

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

菜單文件：

<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"/>