在下面检查我的答案:
toandroid:name="com.google.android.gms.maps.SupportMapFragment"
将您的活动扩展到FragmentActivty并进行更改
map = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)) .getMap(); tomap= ((SupportMapFragment) getSupportFragmentManager() .findFragmentById(R.id.map)).getMap();
还要检查
if (map== null) { map= ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map)).getMap();}
检查清单文件:
<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"package="com.example.googlemapsv2"android:versionCode="1"android:versionName="1.0" ><permission android:name="com.example.googlemapsv2.permission.MAPS_RECEIVE" android:protectionLevel="signature" /><uses-permission android:name="com.example.googlemapsv2.permission.MAPS_RECEIVE" /><uses-sdk android:minSdkVersion="12" android:targetSdkVersion="17" /><uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /><uses-permission android:name="android.permission.INTERNET" /><uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" /><uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /><!-- Required to show current location --><uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /><uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /><!-- Required OpenGL ES 2.0. for Maps V2 --><uses-feature android:glEsVersion="0x00020000" android:required="true" /><!-- Requires OpenGL ES version 2 --><uses-feature android:glEsVersion="0x00020000" android:required="true" /><application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" > <activity android:name="com.example.googlemapsv2.MainActivity" android:label="@string/app_name" android:theme="@style/AppbaseTheme" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <!-- Google API Key --> <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 Google map API key" /></application>
希望这可以帮助。
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