Java 谷歌地图API地图创建错误

我在.xml文件中创建了片段：

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

但当我试图创建GoogleMap对象时

maps = ((MapFragment) getFragmentManager().findFragmentById(
                    R.id.map)).getMap();

我在

getFragmentManager（）

eclipse找不到此方法时出错

如何克服此问题？

在Xml文件中

<?xml version="1.0" encoding="utf-8"?>
<fragment
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/map"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:name="com.google.android.gms.maps.SupportMapFragment"/>

遵循本教程

在您的清单文件中

<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />

<application>

    ...

    <meta-data android:name="com.google.android.maps.v2.API_KEY"
               android:value="HERE GOES YOUR API KEY" />

</application>

...

请导入主活动中的“导入android.support.v4.app.FragmentActivity”类

---

如果你下载了google play服务，它可以被导入。

确保你的类扩展了FragmentActivity，并且你的android项目是google api项目

检查您的清单文件：

public class MainActivity extends Activity {

    private GoogleMap googleMap;

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

        // Loading map
        initilizeMap();

    }

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

    private void initilizeMap() {
        if (googleMap == null) {
            googleMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();

            if (googleMap == null) {
                Toast.makeText(getApplicationContext(), "Sorry! unable to create maps",
                        Toast.LENGTH_SHORT).show();
            }
        }
    }

}

---

无需扩展碎片活动

尝试以下代码：

public class MainActivity extends Activity {

    private GoogleMap googleMap;

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

        // Loading map
        initilizeMap();

    }

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

    private void initilizeMap() {
        if (googleMap == null) {
            googleMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();

            if (googleMap == null) {
                Toast.makeText(getApplicationContext(), "Sorry! unable to create maps",
                        Toast.LENGTH_SHORT).show();
            }
        }
    }

}

---

API密钥和其他密钥没有问题settings@user3138900确保此包已导入1）导入android.support.v4.app.FragmentActivity；2） 导入com.google.android.gms.maps.SupportMapFragment@user3138900 try Upper在java文件部分添加的更新代码I添加了两个导入，但错误仍然存在：（正确答案在这里！：）很高兴它帮助了您：）ty但问题是“公共类xxx扩展碎片活动”：

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

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

    <permission
        android:name="com.example.permission.MAPS_RECEIVE"
        android:protectionLevel="signature" />

    <uses-permission android:name="com.example.MAPS_RECEIVE" />

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

    <uses-sdk
        android:minSdkVersion="11"
        android:targetSdkVersion="18" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <uses-library android:name="com.google.android.maps" />

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

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

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

</manifest>

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

GoogleMap googleMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();

public class MainActivity extends Activity {

    private GoogleMap googleMap;

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

        // Loading map
        initilizeMap();

    }

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

    private void initilizeMap() {
        if (googleMap == null) {
            googleMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();

            if (googleMap == null) {
                Toast.makeText(getApplicationContext(), "Sorry! unable to create maps",
                        Toast.LENGTH_SHORT).show();
            }
        }
    }

}