无法实例android.gms.maps.SupportMapFragment [英] Unable to instantiate android.gms.maps.SupportMapFragment

问题描述

我有一个Facebook风格的侧栏导航视图。在主视图我想显示我的地图。我按照谷歌的教程完全相同！但我一直运行到错误无法实例android.gms.maps.SupportMapFragment。

I have a view with a facebook style side bar navigation. On the main view I want to display my map. I have followed Google's tutorial exactly! But I keep running into the error Unable to instantiate android.gms.maps.SupportMapFragment.

我还是设法在一个普通的项目运行如下命令，但是当我跟我的主要项目进行合并这个错误弹出：

I did manage to run this on a plain project but when I merge it with my main project this error pops up:

07-25 13:27:53.778: E/AndroidRuntime(24841): 
Caused by: android.support.v4.app.Fragment$InstantiationException: Unable to instantiate fragment com.google.android.gms.maps.SupportMapFragment:
make sure class name exists, is public, and has an empty constructor that is public

我试过下面张贴的答案，但问题仍然存在。

I tried the answers posted below but the problem persists.

<一个href=\"http://stackoverflow.com/questions/14082851/error-inflating-class-fragment-with-google-map\">"Error充气类片段QUOT;与谷歌地图

和也这一个：

<一个href=\"http://stackoverflow.com/questions/16572020/error-java-lang-classnotfoundexception-com-google-android-gms-maps-mapfragment\">Error抛出java.lang.ClassNotFoundException：com.google.android.gms.maps.MapFragment在谷歌地图V2

在项目属性为谷歌SDK中的参考也被设置。
这里是类：

The reference to the google sdk in project properties is also set. Here is the class:

    public class SlideAnimationThenCallLayout extends FragmentActivity implements AnimationListener {

View menu;
View app;

boolean menuOut = false;
AnimParams animParams = new AnimParams();

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

        setContentView(R.layout.activity_slide_animation_then_call_layout);


    LinearLayout linearLayout = (LinearLayout) findViewById(R.id.menu);
    linearLayout.setOnTouchListener(new OnSwipeTouchListener(){

        public void onSwipeRight() {
            swipeAnimation();

        }

    });
    RelativeLayout listview3 = (RelativeLayout) findViewById(R.id.relativeLayout1);
    listview3.setOnTouchListener(new OnSwipeTouchListener(){

        public void onSwipeRight() {
            swipeAnimation();

        }
        public void onSwipeLeft() {
            swipeAnimation();

        }
    });
    menu = findViewById(R.id.menu);
    app = findViewById(R.id.relativeLayout1);

}

XML文件是：

The xml file is:

    <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/frame_layout1"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >

<LinearLayout
    android:id="@+id/menu"
    android:layout_width="match_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >
    <ListView
        android:id="@+id/listView3"
        android:layout_width="match_parent"
        android:layout_height="100dp"
        android:background="@drawable/action_eating">
    </ListView>

</LinearLayout>

<RelativeLayout
    android:id="@+id/relativeLayout1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/android_homescreen">

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

我不知道什么是错在这里了。任何帮助将大大AP preciated。

I don't know what is wrong here now. Any Help would be greatly appreciated.

推荐答案

由你判断错误：

产生的原因：android.support.v4.app.Fragment $ InstantiationException：无法实例片段com.google.android.gms.maps.SupportMapFragment：
  确保类名存在，是公开的，有一个空的构造是公共

Caused by: android.support.v4.app.Fragment$InstantiationException: Unable to instantiate fragment com.google.android.gms.maps.SupportMapFragment: make sure class name exists, is public, and has an empty constructor that is public

和事实的 SupportManFragment 类的<​​code>的Google Play服务库，你的问题是surtenly部分在你的方式引用该库或库它的自我。

and the fact the SupportManFragment class is part of the google-play-services library, you problem is surtenly in the way you reference this library or the library it self.

我会建议你使用SDK管理器重新下载它，将它移动到它的路径将更短，然后尝试引用它再次使用你这个问题有答案了一个位置：

I would suggest you to re-download it using the SDK-Manager and move it to a location where it path would be shorter and then try to reference it again using the answer you have in this question:

<一个href=\"http://stackoverflow.com/questions/16572020/error-java-lang-classnotfoundexception-com-google-android-gms-maps-mapfragment\">Error抛出java.lang.ClassNotFoundException：com.google.android.gms.maps.MapFragment在谷歌地图V2

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