我正在尝试使用Google Maps API v2构建应用程序，但事实是，应用程序一直给我错误。不幸的是.apk已停止工作，尽管我遵循了所有必需的说明。请查看我的代码并帮助我找出问题所在。在此先感谢
这是我的应用代码
package com.example.ugoogle;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapView;
public class MainActivity extends MapActivity {
MapView maps;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
maps = (MapView) findViewById (R.id.MapsViewMain);
maps.setBuiltInZoomControls(true);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
}
这是我的xml
<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"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.ugoogle.MainActivity" >
<com.google.android.gms.maps.MapView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:apiKey="My key that was generated on google is here. trust me"
android:id="@+id/MapsViewMain"
android:enabled="true"
android:clickable="true"
/>
</RelativeLayout>
这是我的清单
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.ugoogle"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="21" />
<uses-feature
android:glEsVersion="0x00020000"
android:required="true" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<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" />
<activity
android:name=".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>
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="My key that was generated on google is here. trust me" />
</application>
</manifest>
logcat的
01-01 22:13:31.862: E/AndroidRuntime(13016): FATAL EXCEPTION: main
01-01 22:13:31.862: E/AndroidRuntime(13016): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.vogella.android.locationapi.maps/com.vogella.android.locationapi.maps.MainActivity}: java.lang.ClassNotFoundException: Didn't find class "com.vogella.android.locationapi.maps.MainActivity" on path: DexPathList[[zip file "/data/app/com.vogella.android.locationapi.maps-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.vogella.android.locationapi.maps-1, /vendor/lib, /system/lib]]
01-01 22:13:31.862: E/AndroidRuntime(13016): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2269)
01-01 22:13:31.862: E/AndroidRuntime(13016): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2395)
01-01 22:13:31.862: E/AndroidRuntime(13016): at android.app.ActivityThread.access$600(ActivityThread.java:162)
01-01 22:13:31.862: E/AndroidRuntime(13016): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1364)
01-01 22:13:31.862: E/AndroidRuntime(13016): at android.os.Handler.dispatchMessage(Handler.java:107)
01-01 22:13:31.862: E/AndroidRuntime(13016): at android.os.Looper.loop(Looper.java:194)
01-01 22:13:31.862: E/AndroidRuntime(13016): at android.app.ActivityThread.main(ActivityThread.java:5371)
01-01 22:13:31.862: E/AndroidRuntime(13016): at java.lang.reflect.Method.invokeNative(Native Method)
01-01 22:13:31.862: E/AndroidRuntime(13016): at java.lang.reflect.Method.invoke(Method.java:525)
01-01 22:13:31.862: E/AndroidRuntime(13016): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833)
01-01 22:13:31.862: E/AndroidRuntime(13016): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
01-01 22:13:31.862: E/AndroidRuntime(13016): at dalvik.system.NativeStart.main(Native Method)
01-01 22:13:31.862: E/AndroidRuntime(13016): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.vogella.android.locationapi.maps.MainActivity" on path: DexPathList[[zip file "/data/app/com.vogella.android.locationapi.maps-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.vogella.android.locationapi.maps-1, /vendor/lib, /system/lib]]
01-01 22:13:31.862: E/AndroidRuntime(13016): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:53)
01-01 22:13:31.862: E/AndroidRuntime(13016): at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
01-01 22:13:31.862: E/AndroidRuntime(13016): at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
01-01 22:13:31.862: E/AndroidRuntime(13016): at android.app.Instrumentation.newActivity(Instrumentation.java:1054)
01-01 22:13:31.862: E/AndroidRuntime(13016): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2260)
01-01 22:13:31.862: E/AndroidRuntime(13016): ... 11 more
01-01 22:13:31.927: E/AppErrorDialog(494): Failed to get ILowStorageHandle instance
01-01 22:15:50.133: E/AndroidRuntime(13111): FATAL EXCEPTION: main
01-01 22:15:50.133: E/AndroidRuntime(13111): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.vogella.android.locationapi.maps/com.vogella.android.locationapi.maps.MainActivity}: java.lang.ClassNotFoundException: Didn't find class "com.vogella.android.locationapi.maps.MainActivity" on path: DexPathList[[zip file "/data/app/com.vogella.android.locationapi.maps-2.apk"],nativeLibraryDirectories=[/data/app-lib/com.vogella.android.locationapi.maps-2, /vendor/lib, /system/lib]]
01-01 22:15:50.133: E/AndroidRuntime(13111): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2269)
01-01 22:15:50.133: E/AndroidRuntime(13111): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2395)
01-01 22:15:50.133: E/AndroidRuntime(13111): at android.app.ActivityThread.access$600(ActivityThread.java:162)
01-01 22:15:50.133: E/AndroidRuntime(13111): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1364)
01-01 22:15:50.133: E/AndroidRuntime(13111): at android.os.Handler.dispatchMessage(Handler.java:107)
01-01 22:15:50.133: E/AndroidRuntime(13111): at android.os.Looper.loop(Looper.java:194)
01-01 22:15:50.133: E/AndroidRuntime(13111): at android.app.ActivityThread.main(ActivityThread.java:5371)
01-01 22:15:50.133: E/AndroidRuntime(13111): at java.lang.reflect.Method.invokeNative(Native Method)
01-01 22:15:50.133: E/AndroidRuntime(13111): at java.lang.reflect.Method.invoke(Method.java:525)
01-01 22:15:50.133: E/AndroidRuntime(13111): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833)
01-01 22:15:50.133: E/AndroidRuntime(13111): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
01-01 22:15:50.133: E/AndroidRuntime(13111): at dalvik.system.NativeStart.main(Native Method)
01-01 22:15:50.133: E/AndroidRuntime(13111): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.vogella.android.locationapi.maps.MainActivity" on path: DexPathList[[zip file "/data/app/com.vogella.android.locationapi.maps-2.apk"],nativeLibraryDirectories=[/data/app-lib/com.vogella.android.locationapi.maps-2, /vendor/lib, /system/lib]]
01-01 22:15:50.133: E/AndroidRuntime(13111): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:53)
01-01 22:15:50.133: E/AndroidRuntime(13111): at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
01-01 22:15:50.133: E/AndroidRuntime(13111): at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
01-01 22:15:50.133: E/AndroidRuntime(13111): at android.app.Instrumentation.newActivity(Instrumentation.java:1054)
01-01 22:15:50.133: E/AndroidRuntime(13111): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2260)
01-01 22:15:50.133: E/AndroidRuntime(13111): ... 11 more
01-01 22:15:50.184: E/AppErrorDialog(494): Failed to get ILowStorageHandle instance
01-01 22:16:50.897: E/PlayEventLogger(11433): Upload failed class java.net.UnknownHostException(Unable to resolve host "play.googleapis.com": No address associated with hostname)
01-01 22:17:17.911: E/CellLocation(861): create GsmCellLocation
01-01 22:17:17.915: E/CellLocation(861): create GsmCellLocation
01-01 22:17:32.905: E/CellLocation(861): create GsmCellLocation
01-01 22:17:32.909: E/CellLocation(861): create GsmCellLocation
答案 0 :(得分：0)
尝试将其添加为元素的子元素：
<meta-data
android:name="com.google.android.gms.version"
android:value="@integer/google_play_services_version" />