Java 使用底部导航栏

除了显示不同的字符串外，我如何使用底部导航栏（android支持小部件）进行其他操作？我的意思是，如何使用它在布局之间切换？没有找到解决方案，而且“

setContentView（R.layout.example）；

”不起作用

这里有一个快速入门的片段：

public class MainActivity extends AppCompatActivity {
    private BottomBar mBottomBar;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        // Notice how you don't use the setContentView method here! Just
        // pass your layout to bottom bar, it will be taken care of.
        // Everything will be just like you're used to.
        mBottomBar = BottomBar.bind(this, R.layout.activity_main,
                savedInstanceState);

        mBottomBar.setItems(
                new BottomBarTab(R.drawable.ic_recents, "Recents"),
                new BottomBarTab(R.drawable.ic_favorites, "Favorites"),
                new BottomBarTab(R.drawable.ic_nearby, "Nearby"),
                new BottomBarTab(R.drawable.ic_friends, "Friends")
        );

        mBottomBar.setOnItemSelectedListener(new OnTabSelectedListener() {
            @Override
            public void onItemSelected(final int position) {
                // the user selected a new tab
            }
        });
    }

    @Override
    protected void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        mBottomBar.onSaveInstanceState(outState);
    }
}


How to use ?

首先，我们需要更新我们的依赖关系

编译'com.android.support:design:25.0.0'

设计xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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">

    <!-- Content Container -->


<android.support.design.widget.BottomNavigationView
        android:id="@+id/bottom_navigation"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        app:itemBackground="@color/colorPrimary"
        app:itemIconTint="@color/white"
        app:itemTextColor="@color/white"
        app:menu="@menu/bottom_navigation_main" />

</RelativeLayout>

---

设置内容视图是整个活动，而不是底部栏。。。尝试使用

LayoutInflater

你在找这样的东西吗？如果某个组件未按预期工作，请将您的问题包括在代码中，因为该组件与所询问的组件不同@蟋蟀007非常感谢，但我已经尝试过这一款，但它不仅仅是在琴弦之间切换。这就引出了我的问题：它如何在多个字符串之间切换？“我现在是个彻头彻尾的傻瓜，所以我很高兴能得到任何帮助。@Belmandel我不知道你想做什么。”。你是想回复Euphor08吗？@Euphor08非常感谢你的帮助。我已经设置好了导航栏之类的东西，我需要知道的是如何让它在布局之间切换，因为从这些代码中可以看出，它不会在布局之间切换layouts@cricket_007不，我回应了你。我已经尝试了你发布的示例，但它不能在布局之间切换。。

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">
    <item
        android:id="@+id/action_favorites"
        android:enabled="true"
        android:icon="@drawable/ic_favorite_white_24dp"
        android:title="@string/text_favorites"
        app:showAsAction="ifRoom" />
    <item
        android:id="@+id/action_schedules"
        android:enabled="true"
        android:icon="@drawable/ic_access_time_white_24dp"
        android:title="@string/text_schedules"
        app:showAsAction="ifRoom" />
    <item
        android:id="@+id/action_music"
        android:enabled="true"
        android:icon="@drawable/ic_audiotrack_white_24dp"
        android:title="@string/text_music"
        app:showAsAction="ifRoom" />
</menu>

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:color="@color/white" android:state_enabled="true" />
    <item android:color="@color/colorPrimaryDark" android:state_enabled="false" />
</selector>

BottomNavigationView bottomNavigationView = (BottomNavigationView)
                findViewById(R.id.bottom_navigation);

bottomNavigationView.setOnNavigationItemSelectedListener(
        new BottomNavigationView.OnNavigationItemSelectedListener() {
            @Override
            public boolean onNavigationItemSelected(@NonNull MenuItem item) {
                switch (item.getItemId()) {
                    case R.id.action_favorites:
**question now is: what to put inside here so it switch to another layout??** 
                        break;
                    case R.id.action_schedules:
**question now is: what to put inside here so it switch to another layout??** 
                        break;
                    case R.id.action_music:
**question now is: what to put inside here so it switch to another layout??** 
                        break;
                }
                return false;
            }
});