java使用安卓。支持v4。应用程序。碎片和安卓。应用程序。相同活动中的片段

Question

My Main活动使用两种类型的片段：

com.google.安卓.gms.maps.SupportMapFragment

及

com.ankitshubham97.myapp.NotifFragment.

对于com.google.安卓.gms.maps.SupportMapFragment，需要安卓.support.v4.app.Fragment，但是对于com.ankitshubham97.myapp.NotifFragment，需要安卓.app.Fragment。我不能同时导入这两个。有什么好办法解决这个问题吗？我已经研究了How to mix 安卓.support.v4.app.Fragment and 安卓.app.Fragment和Android using both getFragmentManager and getSupportFragmentManager causes overlapping，但是它们有点老了，我想如果有人有一个简洁的解决方案，除了在前面的链接中建议的以外

这是我的活动。xml的片段声明部分：

<FrameLayout
    安卓:id="@+id/content"
    安卓:layout_width="match_parent"
    安卓:layout_height="0dp"
    安卓:layout_weight="1">
    <fragment
        xmlns:安卓="http://schemas.安卓.com/apk/res/安卓"
        xmlns:map="http://schemas.安卓.com/apk/res-auto"
        xmlns:tools="http://schemas.安卓.com/tools"
        安卓:id="@+id/map"
        安卓:name="com.google.安卓.gms.maps.SupportMapFragment"
        安卓:layout_width="match_parent"
        安卓:layout_height="match_parent">

    </fragment>

    <fragment
        安卓:id="@+id/notif"
        安卓:name="com.ankitshubham97.myapp.NotifFragment"
        安卓:layout_width="match_parent"
        安卓:layout_height="match_parent">

    </fragment>
</FrameLayout>

我的主要活动。java的onCreate函数（有错误）：

 @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
        notifFragment =  getFragmentManager().findFragmentById(R.id.notif);
        getFragmentManager().beginTransaction().hide(notifFragment);
        mapFragment.getMapAsync(this);
        navigation = (AHBottomNavigation) findViewById(R.id.navigation);
        AHBottomNavigationItem item1 = new AHBottomNavigationItem(R.string.title_home, R.drawable.ic_home_black_24dp, R.color.colorBottomNavigationPrimary);
        AHBottomNavigationItem item2 = new AHBottomNavigationItem(R.string.title_dashboard, R.drawable.ic_dashboard_black_24dp, R.color.colorBottomNavigationPrimary);
        AHBottomNavigationItem item3 = new AHBottomNavigationItem(R.string.title_notifications, R.drawable.ic_notifications_black_24dp, R.color.colorBottomNavigationPrimary);
        navigation.addItem(item1);
        navigation.addItem(item2);
        navigation.addItem(item3);
        navigation.setOnTabSelectedListener(new AHBottomNavigation.OnTabSelectedListener() {
            @Override
            public boolean onTabSelected(int position, boolean wasSelected) {
                FragmentManager sfm = getSupportFragmentManager();
                FragmentTransaction sft= sfm.beginTransaction();
                switch (position) {
                    case 0:
                        Log.d(TAG,(mapFragment==null)+"");
                        sft.show(mapFragment);
                        ft.hide(notifFragment);
                        sft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
                        sft.commit();
                        Toast.makeText(getApplicationContext(),R.string.title_home,Toast.LENGTH_SHORT).show();
                        return true;

                    case 1:

                        sft.hide(mapFragment);
                        ft.show(notifFragment);
                        sft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
                        sft.commit();addToBackStack(null).commit();
                        Toast.makeText(getApplicationContext(),R.string.title_dashboard,Toast.LENGTH_SHORT).show();
                        return true;
                    case 2:
                        Toast.makeText(getApplicationContext(),R.string.title_notifications,Toast.LENGTH_SHORT).show();
                        navigation.setNotification("",2);
                        spEditor.putInt(NOTIFCOUNT,0);
                        spEditor.apply();
                        return true;
                }
                return true;
            }
        });
}

Answer 1

无论何时使用“Fragment”，都要使用包括包在内的特定类。因此，根据具体情况，将“Fragment”替换为“android.support.v4.app.Fragment”或“android.app.Fragment”

这能解决你的问题吗