在下面检查我的答案：
在您的xml文件中更改此 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' > <activityandroid: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-dataandroid:name='com.google.android.gms.version'android:value='@integer/google_play_services_version' /> <Meta-dataandroid:name='com.google.android.maps.v2.API_KEY'android:value='your Google map API key' /></application>
希望这可以帮助。
解决方法我尝试在Android上编写一个简单的地图应用程序，但唯一的结果就是错误。我尝试以应有的方式对其进行编程，但仍然无法正常工作。
主要活动
package com.example.guidebook;import android.os.Bundle;import android.app.Activity;import android.view.Menu;public class GuidebookActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.guidebook); } @Override public boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.guidebook,menu);return true; }}
.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' > <TextViewandroid:layout_width='wrap_content'android:layout_height='wrap_content'android:layout_centerHorizontal='true'android:layout_centerVertical='true'android:text='@string/hello_world' /> <fragmentandroid: android:layout_width='match_parent'android:layout_height='match_parent' /></RelativeLayout>
表现
<?xml version='1.0' encoding='utf-8'?><manifest xmlns:android='http://schemas.android.com/apk/res/android' package='com.example.guidebook' android:versionCode='1' android:versionName='1.0' > <uses-sdkandroid:minSdkVersion='8'android:targetSdkVersion='19' /> <permission android:name='com.example.guidebook.permission.MAPS_RECEIVE'android:protectionLevel='signature'/> <uses-permission android:name='com.example.guidebook.permission.MAPS_RECEIVE'/> <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'/> <uses-permission android:name='android.permission.ACCESS_COARSE_LOCATION'/> <uses-permission android:name='android.permission.ACCESS_FINE_LOCATION'/> <!-- Maps API needs OpenGL ES 2.0. --> <uses-feature android:glEsVersion='0x00020000' android:required='true'/> <applicationandroid:allowBackup='true'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='AI-------------------'/><activity android:name='com.example.guidebook.GuidebookActivity' 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>
我是这个领域的新手，因此需要详细的帮助。
Log: 12-09 10:35:44.200: D/AndroidRuntime(24663): Shutting down VM12-09 10:35:44.200: W/dalvikvm(24663): threadid=1: thread exiting with uncaught exception (group=0x415d5ba8)12-09 10:35:44.200: E/AndroidRuntime(24663): FATAL EXCEPTION: main12-09 10:35:44.200: E/AndroidRuntime(24663): Process: com.example.guidebook,PID: 2466312-09 10:35:44.200: E/AndroidRuntime(24663): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.guidebook/com.example.guidebook.GuidebookActivity}: android.view.InflateException: Binary XML file line #2: Error inflating class fragment12-09 10:35:44.200: E/AndroidRuntime(24663): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)12-09 10:35:44.200: E/AndroidRuntime(24663): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)12-09 10:35:44.200: E/AndroidRuntime(24663): at android.app.ActivityThread.access$800(ActivityThread.java:135)12-09 10:35:44.200: E/AndroidRuntime(24663): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)12-09 10:35:44.200: E/AndroidRuntime(24663): at android.os.Handler.dispatchMessage(Handler.java:102)12-09 10:35:44.200: E/AndroidRuntime(24663): at android.os.Looper.loop(Looper.java:136)12-09 10:35:44.200: E/AndroidRuntime(24663): at android.app.ActivityThread.main(ActivityThread.java:5017)12-09 10:35:44.200: E/AndroidRuntime(24663): at java.lang.reflect.Method.invokeNative(Native Method)12-09 10:35:44.200: E/AndroidRuntime(24663): at java.lang.reflect.Method.invoke(Method.java:515)12-09 10:35:44.200: E/AndroidRuntime(24663): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)12-09 10:35:44.200: E/AndroidRuntime(24663): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)12-09 10:35:44.200: E/AndroidRuntime(24663): at dalvik.system.NativeStart.main(Native Method)12-09 10:35:44.200: E/AndroidRuntime(24663): Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class fragment12-09 10:35:44.200: E/AndroidRuntime(24663): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:713)12-09 10:35:44.200: E/AndroidRuntime(24663): at android.view.LayoutInflater.inflate(LayoutInflater.java:469)12-09 10:35:44.200: E/AndroidRuntime(24663): at android.view.LayoutInflater.inflate(LayoutInflater.java:397)12-09 10:35:44.200: E/AndroidRuntime(24663): at android.view.LayoutInflater.inflate(LayoutInflater.java:353)12-09 10:35:44.200: E/AndroidRuntime(24663): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:290)12-09 10:35:44.200: E/AndroidRuntime(24663): at android.app.Activity.setContentView(Activity.java:1929)12-09 10:35:44.200: E/AndroidRuntime(24663): at com.example.guidebook.GuidebookActivity.onCreate(GuidebookActivity.java:12)12-09 10:35:44.200: E/AndroidRuntime(24663): at android.app.Activity.performCreate(Activity.java:5231)12-09 10:35:44.200: E/AndroidRuntime(24663): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)12-09 10:35:44.200: E/AndroidRuntime(24663): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)12-09 10:35:44.200: E/AndroidRuntime(24663): ... 11 more12-09 10:35:44.200: E/AndroidRuntime(24663): Caused by: android.app.Fragment$InstantiationException: Trying to instantiate a class com.google.android.gms.maps.SupportMapFragment that is not a Fragment12-09 10:35:44.200: E/AndroidRuntime(24663): at android.app.Fragment.instantiate(Fragment.java:585)12-09 10:35:44.200: E/AndroidRuntime(24663): at android.app.Fragment.instantiate(Fragment.java:561)12-09 10:35:44.200: E/AndroidRuntime(24663): at android.app.Activity.onCreateView(Activity.java:4778)12-09 10:35:44.200: E/AndroidRuntime(24663): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:689)12-09 10:35:44.200: E/AndroidRuntime(24663): ... 20 more12-09 10:35:44.200: E/AndroidRuntime(24663): Caused by: java.lang.ClassCastException12-09 10:35:44.200: E/AndroidRuntime(24663): ... 24 more12-09 10:36:10.520: D/AndroidRuntime(24870): Shutting down VM12-09 10:36:10.520: W/dalvikvm(24870): threadid=1: thread exiting with uncaught exception (group=0x415d5ba8)12-09 10:36:10.520: E/AndroidRuntime(24870): FATAL EXCEPTION: main12-09 10:36:10.520: E/AndroidRuntime(24870): Process: com.example.guidebook,PID: 2487012-09 10:36:10.520: E/AndroidRuntime(24870): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.guidebook/com.example.guidebook.GuidebookActivity}: android.view.InflateException: Binary XML file line #2: Error inflating class fragment12-09 10:36:10.520: E/AndroidRuntime(24870): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)12-09 10:36:10.520: E/AndroidRuntime(24870): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)12-09 10:36:10.520: E/AndroidRuntime(24870): at android.app.ActivityThread.access$800(ActivityThread.java:135)12-09 10:36:10.520: E/AndroidRuntime(24870): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)12-09 10:36:10.520: E/AndroidRuntime(24870): at android.os.Handler.dispatchMessage(Handler.java:102)12-09 10:36:10.520: E/AndroidRuntime(24870): at android.os.Looper.loop(Looper.java:136)12-09 10:36:10.520: E/AndroidRuntime(24870): at android.app.ActivityThread.main(ActivityThread.java:5017)12-09 10:36:10.520: E/AndroidRuntime(24870): at java.lang.reflect.Method.invokeNative(Native Method)12-09 10:36:10.520: E/AndroidRuntime(24870): at java.lang.reflect.Method.invoke(Method.java:515)12-09 10:36:10.520: E/AndroidRuntime(24870): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)12-09 10:36:10.520: E/AndroidRuntime(24870): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)12-09 10:36:10.520: E/AndroidRuntime(24870): at dalvik.system.NativeStart.main(Native Method)12-09 10:36:10.520: E/AndroidRuntime(24870): Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class fragment12-09 10:36:10.520: E/AndroidRuntime(24870): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:713)12-09 10:36:10.520: E/AndroidRuntime(24870): at android.view.LayoutInflater.inflate(LayoutInflater.java:469)12-09 10:36:10.520: E/AndroidRuntime(24870): at android.view.LayoutInflater.inflate(LayoutInflater.java:397)12-09 10:36:10.520: E/AndroidRuntime(24870): at android.view.LayoutInflater.inflate(LayoutInflater.java:353)12-09 10:36:10.520: E/AndroidRuntime(24870): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:290)12-09 10:36:10.520: E/AndroidRuntime(24870): at android.app.Activity.setContentView(Activity.java:1929)12-09 10:36:10.520: E/AndroidRuntime(24870): at com.example.guidebook.GuidebookActivity.onCreate(GuidebookActivity.java:12)12-09 10:36:10.520: E/AndroidRuntime(24870): at android.app.Activity.performCreate(Activity.java:5231)12-09 10:36:10.520: E/AndroidRuntime(24870): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)12-09 10:36:10.520: E/AndroidRuntime(24870): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)12-09 10:36:10.520: E/AndroidRuntime(24870): ... 11 more12-09 10:36:10.520: E/AndroidRuntime(24870): Caused by: java.lang.NullPointerException: name == null12-09 10:36:10.520: E/AndroidRuntime(24870): at java.lang.VMClassLoader.findLoadedClass(Native Method)12-09 10:36:10.520: E/AndroidRuntime(24870): at java.lang.ClassLoader.findLoadedClass(ClassLoader.java:350)12-09 10:36:10.520: E/AndroidRuntime(24870): at java.lang.ClassLoader.loadClass(ClassLoader.java:487)12-09 10:36:10.520: E/AndroidRuntime(24870): at java.lang.ClassLoader.loadClass(ClassLoader.java:457)12-09 10:36:10.520: E/AndroidRuntime(24870): at android.app.Fragment.instantiate(Fragment.java:583)12-09 10:36:10.520: E/AndroidRuntime(24870): at android.app.Fragment.instantiate(Fragment.java:561)12-09 10:36:10.520: E/AndroidRuntime(24870): at android.app.Activity.onCreateView(Activity.java:4778)12-09 10:36:10.520: E/AndroidRuntime(24870): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:689)12-09 10:36:10.520: E/AndroidRuntime(24870): ... 20 more12-09 10:36:12.420: I/Process(24870): Sending signal. PID: 24870 SIG: 9
