禁用底部菜单动画

Question

我已经通过this 和所有类似的线程，试图禁用底部菜单上的移位模式。

使用了这个帮助类：

 package com.example.chen.jamsession;

/**
 * Created by chen on 04/05/2017.
 */
import android.support.design.internal.BottomNavigationItemView;
import android.support.design.internal.BottomNavigationMenuView;
import android.support.design.widget.BottomNavigationView;
import android.util.Log;
import java.lang.reflect.Field;

class BottomNavigationViewHelper {

    static void removeShiftMode(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);
                item.setShiftingMode(false);
                // set once again checked value, so view will be updated
                item.setChecked(item.getItemData().isChecked());
            }
        } catch (NoSuchFieldException e) {
            Log.e("ERROR NO SUCH FIELD", "Unable to get shift mode field");
        } catch (IllegalAccessException e) {
            Log.e("ERROR ILLEGAL ALG", "Unable to change value of shift mode");
        }
    }
}

并在我的主要活动中实施：

 BottomNavigationView navigation = (BottomNavigationView) findViewById(R.id.navigation);
        BottomNavigationViewHelper.removeShiftMode(navigation);

        navigation.setOnNavigationItemSelectedListener(mOnNavigationItemSelectedListener);

这是我的菜单 xml：

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

    <item
        android:id="@+id/navigation_home"
        android:icon="@drawable/ic_home_black_24dp"
        android:title="@string/title_home"
        android:enabled="true"/>

    <item
        android:id="@+id/navigation_mysessions"
        android:enabled="true"
        android:icon="@drawable/ic_dashboard_black_24dp"
        android:title="@string/title_mysessions" />

    <item
        android:id="@+id/navigation_notifications"
        android:icon="@drawable/ic_notifications_black_24dp"
        android:title="@string/title_notifications"
        android:enabled="true"/>

    <item
        android:id="@+id/navigation_user"
        android:icon="@drawable/ic_notifications_black_24dp"
        android:title="@string/title_user"
        android:enabled="true"/>




</menu>

如何禁用这个烦人的动画？

Answer 1

如果您使用 gradle 3.x，请在 public class BottomNavigationViewHelper 下方添加此 @SuppressLint("RestrictedApi")

这里是完整的代码：

import android.annotation.SuppressLint;
import android.support.design.internal.BottomNavigationItemView;
import android.support.design.internal.BottomNavigationMenuView;
import android.support.design.widget.BottomNavigationView;
import android.util.Log;
import java.lang.reflect.Field;

public class BottomNavigationViewHelper {
    @SuppressLint("RestrictedApi")
    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);
        }
    }
}

希望有帮助

Answer 2

mBottomNavigationView = (BottomNavigationViewEx) findViewById(R.id.bottom_navigation);

mBottomNavigationView.enableShiftingMode(false);