Android 二进制XML文件行#8：错误膨胀类片段，谷歌地图

在这个应用程序中，我试图添加一个功能V2谷歌地图。我已经看过了大多数关于创建活动、获取地图密钥和创建xml文件的教程，试图看看我是否遗漏了任何步骤（我重复了4次），而且似乎没有遗漏任何步骤

我使用的网站是：

当我在手机上运行我的应用程序时（因为Google play services在模拟器上不工作），它会给我以下两个错误：

  02-11 22:10:54.690: E/AndroidRuntime(4526): java.lang.RuntimeException: Unable to       start activity ComponentInfo{com.example.myfirstapp/com.example.myfirstapp.ShowActivity}:       android.view.InflateException: Binary XML file line #8: Error inflating class fragment
  02-11 22:10:54.690: E/AndroidRuntime(4526): 

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

以下是我的活动：

package com.example.myfirstapp;

import android.app.Activity;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.view.Menu;
import com.google.android.maps.*;
import com.google.android.gms.maps.MapFragment;
public class ShowActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_map);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.activity_map, menu);
    return true;
}

//@Override
//protected boolean isRouteDisplayed() {
    // TODO Auto-generated method stub
    //return false;
//}

    }

很抱歉设置了格式，但这是我的xml文件：

<RelativeLayout 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"
   tools:context=".ShowActivity" >

<fragment
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/map"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    class="com.google.android.gms.maps.MapFragment" />

  </RelativeLayout>

我已经导入了GoogleAPI和GooglePlay服务，所以所有的导入都在工作，这让我想知道为什么第二个错误说MapFragment是空的。 清单文件代码：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.myfirstapp"
android:versionCode="1"
android:versionName="1.0" >

<uses-permission android:name="android.permission.READ_CONTACTS" />
<uses-permission android:name="android.permission.SUBSCRIBED_FEEDS_READ" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission        android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="com.example.myfirstapp.permission.MAPS_RECEIVE" />
<permission
    android:name="com.example.myfirstapp.permission.MAPS_RECEIVE"
    android:protectionLevel="signature" />

<uses-feature
    android:glEsVersion="0x00020000"
    android:required="true" />

<uses-sdk
    android:minSdkVersion="14"
    android:targetSdkVersion="15" />

<application
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.example.myfirstapp.MainActivity"
        android:label="@string/title_activity_main" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>

        <meta-data
            android:name="android.app.default_searchable"
            android:value=".SearchResultsActivity" />
    </activity>
    <activity
        android:name="com.example.myfirstapp.SearchResultsActivity"
        android:label="@string/title_activity_search_results"
        android:launchMode="singleTop" >
        <intent-filter>
            <action android:name="android.intent.action.SEARCH" />
        </intent-filter>

        <meta-data
            android:name="android.app.searchable"
            android:resource="@xml/searchable" />
    </activity>
    <activity
        android:name="com.example.myfirstapp.AddContacts"
        android:label="@string/title_activity_add_contacts" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.myfirstapp.ContactActivity"
        android:label="@string/title_activity_contact" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.myfirstapp.DisplayInfo"
        android:label="@string/title_activity_display_info" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

    <provider
        android:name="com.example.myfirstapp.SomeProvider"
        android:authorities="com.example.myfirstapp.SomeProvider" >
    </provider>

    <activity
        android:name="com.example.myfirstapp.EditContacts"
        android:label="@string/title_activity_edit_contacts" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.myfirstapp.DeleteContact"
        android:label="@string/title_activity_delete_contact" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.myfirstapp.FlightInfo"
        android:label="@string/title_activity_flight_info" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.myfirstapp.EventInfo"
        android:label="@string/title_activity_event_info" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.myfirstapp.ContactsActivity"
        android:label="@string/title_activity_contacts" >
    </activity>
    <activity
        android:name="com.example.myfirstapp.ShowActivity"
        android:label="@string/title_activity_map" >
    </activity>

    <meta-data
        android:name="com.google.android.maps.v2.API_KEY"
        android:value="removed" />
<uses-library android:name="com.google.android.maps" />
</application>

</manifest>

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

    <permission
        android:name="com.example.myfirstapp.permission.MAPS_RECEIVE"
        android:protectionLevel="signature"/>
      <uses-permission android:name="com.example.myfirstapp.permission.MAPS_RECEIVE"/>
        <!-- Copied from Google Maps Library/AndroidManifest.xml. -->
      <uses-sdk
                android:minSdkVersion="8"
                android:targetSdkVersion="16"/>
        <uses-permission android:name="android.permission.INTERNET"/>
      <uses-permission         android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
<!-- External storage for caching. -->
       <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
      <uses-feature
        android:glEsVersion="0x00020000"
        android:required="true"/>
      <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >    
         <meta-data
            android:name="com.google.android.maps.v2.API_KEY"
            android:value="removed" />
   </application>

尝试以下代码：

public class ShowActivity extends android.support.v4.app.FragmentActivity {
    private GoogleMap mMap;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_map);
        setUpMapIfNeeded();
    }

    @Override
    protected void onResume() {
        super.onResume();
        setUpMapIfNeeded();
    }

    private void setUpMapIfNeeded() {
        // Do a null check to confirm that we have not already instantiated the map.
        if (mMap == null) {
            // Try to obtain the map from the SupportMapFragment.
            mMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map))
                    .getMap();
            // Check if we were successful in obtaining the map.
            if (mMap != null) {
                setUpMap();
            }
        }
    }
}

XML文件代码：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.myfirstapp"
android:versionCode="1"
android:versionName="1.0" >

<uses-permission android:name="android.permission.READ_CONTACTS" />
<uses-permission android:name="android.permission.SUBSCRIBED_FEEDS_READ" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission        android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="com.example.myfirstapp.permission.MAPS_RECEIVE" />
<permission
    android:name="com.example.myfirstapp.permission.MAPS_RECEIVE"
    android:protectionLevel="signature" />

<uses-feature
    android:glEsVersion="0x00020000"
    android:required="true" />

<uses-sdk
    android:minSdkVersion="14"
    android:targetSdkVersion="15" />

<application
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.example.myfirstapp.MainActivity"
        android:label="@string/title_activity_main" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>

        <meta-data
            android:name="android.app.default_searchable"
            android:value=".SearchResultsActivity" />
    </activity>
    <activity
        android:name="com.example.myfirstapp.SearchResultsActivity"
        android:label="@string/title_activity_search_results"
        android:launchMode="singleTop" >
        <intent-filter>
            <action android:name="android.intent.action.SEARCH" />
        </intent-filter>

        <meta-data
            android:name="android.app.searchable"
            android:resource="@xml/searchable" />
    </activity>
    <activity
        android:name="com.example.myfirstapp.AddContacts"
        android:label="@string/title_activity_add_contacts" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.myfirstapp.ContactActivity"
        android:label="@string/title_activity_contact" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.myfirstapp.DisplayInfo"
        android:label="@string/title_activity_display_info" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

    <provider
        android:name="com.example.myfirstapp.SomeProvider"
        android:authorities="com.example.myfirstapp.SomeProvider" >
    </provider>

    <activity
        android:name="com.example.myfirstapp.EditContacts"
        android:label="@string/title_activity_edit_contacts" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.myfirstapp.DeleteContact"
        android:label="@string/title_activity_delete_contact" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.myfirstapp.FlightInfo"
        android:label="@string/title_activity_flight_info" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.myfirstapp.EventInfo"
        android:label="@string/title_activity_event_info" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.myfirstapp.ContactsActivity"
        android:label="@string/title_activity_contacts" >
    </activity>
    <activity
        android:name="com.example.myfirstapp.ShowActivity"
        android:label="@string/title_activity_map" >
    </activity>

    <meta-data
        android:name="com.google.android.maps.v2.API_KEY"
        android:value="removed" />
<uses-library android:name="com.google.android.maps" />
</application>

</manifest>

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

    <permission
        android:name="com.example.myfirstapp.permission.MAPS_RECEIVE"
        android:protectionLevel="signature"/>
      <uses-permission android:name="com.example.myfirstapp.permission.MAPS_RECEIVE"/>
        <!-- Copied from Google Maps Library/AndroidManifest.xml. -->
      <uses-sdk
                android:minSdkVersion="8"
                android:targetSdkVersion="16"/>
        <uses-permission android:name="android.permission.INTERNET"/>
      <uses-permission         android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
<!-- External storage for caching. -->
       <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
      <uses-feature
        android:glEsVersion="0x00020000"
        android:required="true"/>
      <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >    
         <meta-data
            android:name="com.google.android.maps.v2.API_KEY"
            android:value="removed" />
   </application>

清单文件代码：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.myfirstapp"
android:versionCode="1"
android:versionName="1.0" >

<uses-permission android:name="android.permission.READ_CONTACTS" />
<uses-permission android:name="android.permission.SUBSCRIBED_FEEDS_READ" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission        android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="com.example.myfirstapp.permission.MAPS_RECEIVE" />
<permission
    android:name="com.example.myfirstapp.permission.MAPS_RECEIVE"
    android:protectionLevel="signature" />

<uses-feature
    android:glEsVersion="0x00020000"
    android:required="true" />

<uses-sdk
    android:minSdkVersion="14"
    android:targetSdkVersion="15" />

<application
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.example.myfirstapp.MainActivity"
        android:label="@string/title_activity_main" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>

        <meta-data
            android:name="android.app.default_searchable"
            android:value=".SearchResultsActivity" />
    </activity>
    <activity
        android:name="com.example.myfirstapp.SearchResultsActivity"
        android:label="@string/title_activity_search_results"
        android:launchMode="singleTop" >
        <intent-filter>
            <action android:name="android.intent.action.SEARCH" />
        </intent-filter>

        <meta-data
            android:name="android.app.searchable"
            android:resource="@xml/searchable" />
    </activity>
    <activity
        android:name="com.example.myfirstapp.AddContacts"
        android:label="@string/title_activity_add_contacts" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.myfirstapp.ContactActivity"
        android:label="@string/title_activity_contact" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.myfirstapp.DisplayInfo"
        android:label="@string/title_activity_display_info" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

    <provider
        android:name="com.example.myfirstapp.SomeProvider"
        android:authorities="com.example.myfirstapp.SomeProvider" >
    </provider>

    <activity
        android:name="com.example.myfirstapp.EditContacts"
        android:label="@string/title_activity_edit_contacts" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.myfirstapp.DeleteContact"
        android:label="@string/title_activity_delete_contact" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.myfirstapp.FlightInfo"
        android:label="@string/title_activity_flight_info" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.myfirstapp.EventInfo"
        android:label="@string/title_activity_event_info" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.example.myfirstapp.ContactsActivity"
        android:label="@string/title_activity_contacts" >
    </activity>
    <activity
        android:name="com.example.myfirstapp.ShowActivity"
        android:label="@string/title_activity_map" >
    </activity>

    <meta-data
        android:name="com.google.android.maps.v2.API_KEY"
        android:value="removed" />
<uses-library android:name="com.google.android.maps" />
</application>

</manifest>

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

    <permission
        android:name="com.example.myfirstapp.permission.MAPS_RECEIVE"
        android:protectionLevel="signature"/>
      <uses-permission android:name="com.example.myfirstapp.permission.MAPS_RECEIVE"/>
        <!-- Copied from Google Maps Library/AndroidManifest.xml. -->
      <uses-sdk
                android:minSdkVersion="8"
                android:targetSdkVersion="16"/>
        <uses-permission android:name="android.permission.INTERNET"/>
      <uses-permission         android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
<!-- External storage for caching. -->
       <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
      <uses-feature
        android:glEsVersion="0x00020000"
        android:required="true"/>
      <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >    
         <meta-data
            android:name="com.google.android.maps.v2.API_KEY"
            android:value="removed" />
   </application>

---

我正在尝试在Android 2.3.4上部署Google Play Services V2（用于Google地图功能）。（API级别10），我也有同样的问题。我是这样解决的：

google-play-services_lib必须作为一个库包含在内。在Eclipse中，可以按如下方式执行此操作：

• 使用Android SDK管理器下载该库
• 从现有代码创建一个新的Android项目，指向用于安装SDK的文件夹中的google-play-services_lib。我使用了一个级别（libproject）
• 在Project->Properties->Android下，将此项目标记为Is library
• 在您的项目中，也打开项目->属性->Android，然后单击库部分中的添加。选择google-play-services_库。它将显示为com\u google\u android\u gms

这一点很重要：请确保库的项目生成目标与应用程序使用的目标相同

因为API版本低于11，所以使用SupportMapFragment而不是MapFragment

---

希望这有帮助。我花了整整三个小时才完成这个任务。

在您的清单中添加以下行

<meta-data  
android:name="com.google.android.gms.version"  
android:value="@integer/google_play_services_version" />

我遵循了以下步骤： 步骤1:在清单中包含以下行，确保在应用程序标记中添加

    <meta-data
        android:name="com.google.android.maps.v2.API_KEY"
        android:value="AIzaSyA0YQoByyHKGbB2R3pSIerQCEiGlwieRas" />
    <meta-data
        android:name="com.google.android.gms.version"
        android:value="@integer/google_play_services_version" />

---

---

这个问题发生在我身上，我的代码似乎没有任何问题，经过调查，我注意到问题发生在开发过程中应用实例运行后打开活动时，所以我忽略了它，因为当应用程序在真实用户手中时，即时运行永远不会发生

您的应用程序中有哪种最低api级别？如果您的最低api级别为12或更低，那么您应该在xml中使用

SupportFragment

，而不是

MapFragment

。因此，我的设备是4.1.1，我在清单中将我的minimumSDK设置为14，将targetSDK设置为15。这给了我一个错误，但真正奇怪的是，它仍然说我的mapfragment无法实例化，即使我将其替换为supportfragment。请从布局文件中删除这一行`xmlns:tools=“”`和

xmlns:android=”http://schemas.android.com/apk/res/android“

从您的片段标记。您解决了这个问题吗？我有几乎完全相同的问题。不确定这是否是因为片段管理器对使用哪个片段感到困惑？好的，我已经解决了，我将在下面发布我的答案。