Android BottomNavigationView 去除动画效果

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 {

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);
            item.setShiftingMode(false);
            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);
    } 
} 

}

使用

BottomNavigationView bottomNavigationView = (BottomNavigationView) findViewById(R.id.bottom_navigation_bar); BottomNavigationViewHelper.disableShiftMode(bottomNavigationView);