Question

我正在研究一个项目，并按照这些说明进行操作

（How to add buttons at top of map fragment API v2 layout）

我成功地在Map Fragment（不是支持地图片段）的顶部添加了组件。之后，我对代码进行了更改并执行了以下步骤

（SupportMapFragment Instead of MapFragment）

我将地图片段更改为支持地图片段。除了

，我没有从地图xml中更改任何内容

class="com.google.android.gms.maps.MapFragment"

到

class="com.google.android.gms.maps.SupportMapFragment"

但是当我运行我的应用程序时，我的线性布局不再显示在地图上了。我尝试从FrameLayout更改为RelativeLayout并添加了一些属性，但似乎它仍然与我的LinearLayout重叠。

有什么遗漏或错误的地方吗？

PS。在XML Graphical Layout视图中，我可以看到线性布局在Map上正确定位。

XML图形布局：http://j52.imgup.net/Imagen156161.png
正在运行的应用的屏幕截图：http://i87.imgup.net/Imagen171ef6.png

这是我当前的MapFragment.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
     >

    <fragment 
        android:id="@+id/map"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        class="com.google.android.gms.maps.SupportMapFragment" />

    <LinearLayout
        android:id="@+id/box"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="top"
        android:layout_margin="10dp"
        android:background="@drawable/button_noborder_background"
        android:orientation="vertical" >

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal" >

            <LinearLayout
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_weight="1"
                android:orientation="vertical"
                android:paddingBottom="5dp"
                android:paddingLeft="5dp"
                android:paddingTop="5dp" >

                <LinearLayout
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_gravity="center"
                    android:orientation="horizontal" >

                    <ImageView
                        android:layout_width="25dp"
                        android:layout_height="25dp"
                        android:padding="2dp"
                        android:src="@drawable/icon_marker_inactive" />

                    <TextView
                        android:id="@+id/txtOrigen"
                        android:layout_width="0dp"
                        android:layout_height="match_parent"
                        android:layout_weight="1"
                        android:background="@color/white"
                        android:gravity="center_vertical"
                        android:hint="Origen"
                        android:padding="2dp"
                        android:textAppearance="@android:style/TextAppearance.Small" >
                    </TextView>
                </LinearLayout>

                <LinearLayout
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_gravity="center"
                    android:orientation="horizontal" >

                    <ImageView
                        android:layout_width="25dp"
                        android:layout_height="25dp"
                        android:padding="2dp"
                        android:src="@drawable/icon_marker_inactive" />

                    <TextView
                        android:id="@+id/txtDestino"
                        android:layout_width="0dp"
                        android:layout_height="match_parent"
                        android:layout_weight="1"
                        android:background="@color/white"
                        android:gravity="center_vertical"
                        android:hint="Destino"
                        android:padding="2dp"
                        android:textAppearance="@android:style/TextAppearance.Small" >
                    </TextView>
                </LinearLayout>
            </LinearLayout>

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="match_parent"
                android:layout_gravity="center"
                android:background="@drawable/button_blue_background"
                android:gravity="center"
                android:paddingLeft="15dp"
                android:paddingRight="15dp"
                android:text="Ruta"
                android:textAppearance="@android:style/TextAppearance.Small"
                android:textColor="@color/white" >
            </TextView>
        </LinearLayout>
    </LinearLayout>

</FrameLayout>

activity_main.xml：我的片段容器XML

<!-- A DrawerLayout is intended to be used as the top-level content view using match_parent for both width and height to consume the full space available. -->
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <!--
         As the main content view, the view below consumes the entire
         space available using match_parent in both dimensions.
    -->

    <FrameLayout
        android:id="@+id/container"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

    <!--
         android:layout_gravity="start" tells DrawerLayout to treat
         this as a sliding drawer on the left side for left-to-right
         languages and on the right side for right-to-left languages.
         If you're not building against API 17 or higher, use
         android:layout_gravity="left" instead.
    -->
    <!--
         The drawer is given a fixed width in dp and extends the full height of
         the container.
    -->

    <fragment
        android:id="@+id/navigation_drawer"
        android:layout_width="@dimen/navigation_drawer_width"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        tools:layout="@layout/fragment_navigation_drawer" />

</android.support.v4.widget.DrawerLayout>

从MainActivity.java，onNavigationDrawerItemSelected方法，我创建MapFragment

@Override
    public void onNavigationDrawerItemSelected(int position) {
        // update the main content by replacing fragments
        Fragment fragment;
        FragmentManager fragmentManager;
        switch (position) {
        default:
        case 0:
            fragment = MapFragment.newInstance(position + 1);
            onSectionAttached(position + 1);
            break;
        }
        fragmentManager = getSupportFragmentManager();
        fragmentManager.beginTransaction().replace(R.id.container, fragment)
                .commit();

    }

MapFragment.java

import android.app.Activity;
    import android.content.Context;
    import android.location.LocationManager;
    import android.os.Build;
    import android.os.Bundle;
    import android.support.v4.app.FragmentManager;
    import android.view.LayoutInflater;
    import android.view.View;
    import android.view.ViewGroup;

    import com.google.android.gms.maps.GoogleMap;
    import com.google.android.gms.maps.SupportMapFragment;

    /**
     * A placeholder fragment containing a simple view.
     */
    public class MapFragment extends SupportMapFragment  {
        /**
         * The fragment argument representing the section number for this
         * fragment.
         */
        private static final String ARG_SECTION_NUMBER = "section_number";
        private static View rootView;
        LocationManager locationManager;
        static GoogleMap map;

        /**
         * Returns a new instance of this fragment for the given section number.
         */
        public static SupportMapFragment newInstance(int sectionNumber) {
            SupportMapFragment fragment = new SupportMapFragment();
            Bundle args = new Bundle();
            args.putInt(ARG_SECTION_NUMBER, sectionNumber);
            fragment.setArguments(args);
            return fragment;
        }

        public MapFragment() {
        }

        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                Bundle savedInstanceState) {
            if (rootView != null) {
                ViewGroup parent = (ViewGroup) rootView.getParent();
                if (parent != null)
                    parent.removeView(rootView);
            }

            try {
                rootView = inflater.inflate(R.layout.fragment_mapa, container,
                        false);
            }catch(Exception e){

            }

            // Location Service
            locationManager = (LocationManager) getActivity().getSystemService(
                    Context.LOCATION_SERVICE);

            // Inicializacion del mapa
            map = getMapFragment().getMap();
            map.setMyLocationEnabled(true);
            map.setMapType(GoogleMap.MAP_TYPE_NORMAL);

            return rootView;
        }

        @Override
        public void onAttach(Activity activity) {
            super.onAttach(activity);
            ((MainActivity) activity).onSectionAttached(getArguments().getInt(
                    ARG_SECTION_NUMBER));
        }
        private SupportMapFragment getMapFragment() {
            FragmentManager fm = null;

            // Log.d(TAG, "sdk: " + Build.VERSION.SDK_INT);
            // Log.d(TAG, "release: " + Build.VERSION.RELEASE);

            if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
                // Log.d(TAG, "using getFragmentManager");
                fm = getFragmentManager();
            } else {
                // Log.d(TAG, "using getChildFragmentManager");
                fm = getChildFragmentManager();
            }

            return (SupportMapFragment) fm.findFragmentById(R.id.map);
        }
    }

Answer 1

在您的活动中，请保留对线性布局的引用

LinearLayout root = (LinearLayout) findViewById(R.id.root);

然后在使用片段事务将片段添加到布局后，通过执行

将线性布局置于前面

root.bringToFront();

Answer 2

进入你的xml文件

<fragment 
        android:id="@+id/map"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        class="com.google.android.gms.maps.SupportMapFragment" />

应该是

<FrameLayout
        android:id="@+id/container"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

因为您启动了导航器抽屉：

fragmentManager.beginTransaction().replace(R.id.container, fragment)
                .commit();

但是没有id = to container。

将自定义视图（线性布局）添加到支持地图片段的顶部失败

2 个答案: