我正在尝试使用 Android 加载简单地图，但是当我在移动设备上运行此应用程序时出现问题。这是我的日志猫
07-22 14:47:12.207: D/AndroidRuntime(3241): Shutting down VM
07-22 14:47:12.207: W/dalvikvm(3241): threadid=1: thread exiting with uncaught exception (group=0x40d17258)
07-22 14:47:12.215: E/AndroidRuntime(3241): FATAL EXCEPTION: main
07-22 14:47:12.215: E/AndroidRuntime(3241): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.adeel.map/com.adeel.map.MainActivity}: android.view.InflateException: Binary XML file line #7: Error inflating class fragment
07-22 14:47:12.215: E/AndroidRuntime(3241): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2001)
07-22 14:47:12.215: E/AndroidRuntime(3241): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2028)
07-22 14:47:12.215: E/AndroidRuntime(3241): at android.app.ActivityThread.access$600(ActivityThread.java:127)
07-22 14:47:12.215: E/AndroidRuntime(3241): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1179)
07-22 14:47:12.215: E/AndroidRuntime(3241): at android.os.Handler.dispatchMessage(Handler.java:99)
07-22 14:47:12.215: E/AndroidRuntime(3241): at android.os.Looper.loop(Looper.java:137)
07-22 14:47:12.215: E/AndroidRuntime(3241): at android.app.ActivityThread.main(ActivityThread.java:4508)
07-22 14:47:12.215: E/AndroidRuntime(3241): at java.lang.reflect.Method.invokeNative(Native Method)
07-22 14:47:12.215: E/AndroidRuntime(3241): at java.lang.reflect.Method.invoke(Method.java:511)
07-22 14:47:12.215: E/AndroidRuntime(3241): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:809)
07-22 14:47:12.215: E/AndroidRuntime(3241): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:576)
07-22 14:47:12.215: E/AndroidRuntime(3241): at dalvik.system.NativeStart.main(Native Method)
07-22 14:47:12.215: E/AndroidRuntime(3241): Caused by: android.view.InflateException: Binary XML file line #7: Error inflating class fragment
07-22 14:47:12.215: E/AndroidRuntime(3241): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:699)
07-22 14:47:12.215: E/AndroidRuntime(3241): at android.view.LayoutInflater.rInflate(LayoutInflater.java:741)
07-22 14:47:12.215: E/AndroidRuntime(3241): at android.view.LayoutInflater.inflate(LayoutInflater.java:491)
07-22 14:47:12.215: E/AndroidRuntime(3241): at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
07-22 14:47:12.215: E/AndroidRuntime(3241): at android.view.LayoutInflater.inflate(LayoutInflater.java:353)
07-22 14:47:12.215: E/AndroidRuntime(3241): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:252)
07-22 14:47:12.215: E/AndroidRuntime(3241): at android.app.Activity.setContentView(Activity.java:1837)
07-22 14:47:12.215: E/AndroidRuntime(3241): at com.adeel.map.MainActivity.onCreate(MainActivity.java:23)
07-22 14:47:12.215: E/AndroidRuntime(3241): at android.app.Activity.performCreate(Activity.java:4479)
07-22 14:47:12.215: E/AndroidRuntime(3241): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1050)
07-22 14:47:12.215: E/AndroidRuntime(3241): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1965)
07-22 14:47:12.215: E/AndroidRuntime(3241): ... 11 more
07-22 14:47:12.215: E/AndroidRuntime(3241): Caused by: java.lang.ClassCastException: com.google.android.gms.maps.MapFragment cannot be cast to android.support.v4.app.Fragment
07-22 14:47:12.215: E/AndroidRuntime(3241): at android.support.v4.app.Fragment.instantiate(Fragment.java:394)
07-22 14:47:12.215: E/AndroidRuntime(3241): at android.support.v4.app.Fragment.instantiate(Fragment.java:369)
07-22 14:47:12.215: E/AndroidRuntime(3241): at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:272)
07-22 14:47:12.215: E/AndroidRuntime(3241): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:671)
07-22 14:47:12.215: E/AndroidRuntime(3241): ... 21 more
07-22 14:47:14.132: I/Process(3241): Sending signal. PID: 3241 SIG: 9
这是我的源代码
package com.adeel.map;
import android.os.Bundle;
import android.view.Menu;
import android.support.v4.app.FragmentActivity;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.GoogleMap;
import java.io.InputStream;
import org.json.JSONArray;
import com.adeel.map.R;
public class MainActivity extends FragmentActivity {
JSONArray jArray;
String result = null;
InputStream is = null;
StringBuilder sb=null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//GoogleMap mMap;
//mMap = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
//String readTwitterFeed = readpoints();
SupportMapFragment fm = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
GoogleMap mMap = fm.getMap();
}
@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;
}
}
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"
tools:context=".MainActivity" >
<fragment
android:id="@+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.google.android.gms.maps.MapFragment" />
</RelativeLayout>
这是清单
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.adeel.map"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="8" android:maxSdkVersion="16" android:targetSdkVersion="16"/>
<permission
android:name="com.adeel.map.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
<uses-feature
android:glEsVersion="0x00020000"
android:required="true" />
<uses-permission android:name="com.adeel.map.maps.permission.MAPS_RECEIVE" />
<uses-permission android:name="android.permission.INTERNET" />
<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" />
<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"
android:debuggable="true" >
<activity
android:name="com.adeel.map.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="AIzaSyCHTWS_mHN-2a0oTC2NiC4_a0......." />
</application>
</manifest>
任何人请帮助我这里有什么问题。