我正在尝试根据以下教程制作Google Maps Android应用： http://www.androidhive.info/2013/08/android-working-with-google-maps-v2/
崩溃是因为＆＃34; android.view.MapFragment＆＃34;未检测到类：
03-14 03:42:13.219: D/AndroidRuntime(3052): Shutting down VM
03-14 03:42:13.219: W/dalvikvm(3052): threadid=1: thread exiting with uncaught exception (group=0xb3af2ba8)
03-14 03:42:13.249: E/AndroidRuntime(3052): FATAL EXCEPTION: main
03-14 03:42:13.249: E/AndroidRuntime(3052): Process: com.example.test3, PID: 3052
03-14 03:42:13.249: E/AndroidRuntime(3052): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.test3/com.example.test3.MainActivity}: android.view.InflateException: Binary XML file line #2: Error inflating class MapFragment
03-14 03:42:13.249: E/AndroidRuntime(3052): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
03-14 03:42:13.249: E/AndroidRuntime(3052): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
03-14 03:42:13.249: E/AndroidRuntime(3052): at android.app.ActivityThread.access$800(ActivityThread.java:135)
03-14 03:42:13.249: E/AndroidRuntime(3052): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
03-14 03:42:13.249: E/AndroidRuntime(3052): at android.os.Handler.dispatchMessage(Handler.java:102)
03-14 03:42:13.249: E/AndroidRuntime(3052): at android.os.Looper.loop(Looper.java:136)
03-14 03:42:13.249: E/AndroidRuntime(3052): at android.app.ActivityThread.main(ActivityThread.java:5017)
03-14 03:42:13.249: E/AndroidRuntime(3052): at java.lang.reflect.Method.invokeNative(Native Method)
03-14 03:42:13.249: E/AndroidRuntime(3052): at java.lang.reflect.Method.invoke(Method.java:515)
03-14 03:42:13.249: E/AndroidRuntime(3052): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
03-14 03:42:13.249: E/AndroidRuntime(3052): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
03-14 03:42:13.249: E/AndroidRuntime(3052): at dalvik.system.NativeStart.main(Native Method)
03-14 03:42:13.249: E/AndroidRuntime(3052): Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class MapFragment
03-14 03:42:13.249: E/AndroidRuntime(3052): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:707)
03-14 03:42:13.249: E/AndroidRuntime(3052): at android.view.LayoutInflater.inflate(LayoutInflater.java:469)
03-14 03:42:13.249: E/AndroidRuntime(3052): at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
03-14 03:42:13.249: E/AndroidRuntime(3052): at android.view.LayoutInflater.inflate(LayoutInflater.java:353)
03-14 03:42:13.249: E/AndroidRuntime(3052): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:290)
03-14 03:42:13.249: E/AndroidRuntime(3052): at android.app.Activity.setContentView(Activity.java:1929)
03-14 03:42:13.249: E/AndroidRuntime(3052): at com.example.test3.MainActivity.onCreate(MainActivity.java:22)
03-14 03:42:13.249: E/AndroidRuntime(3052): at android.app.Activity.performCreate(Activity.java:5231)
03-14 03:42:13.249: E/AndroidRuntime(3052): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
03-14 03:42:13.249: E/AndroidRuntime(3052): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
03-14 03:42:13.249: E/AndroidRuntime(3052): ... 11 more
03-14 03:42:13.249: E/AndroidRuntime(3052): Caused by: java.lang.ClassNotFoundException: Didn't find class "android.view.MapFragment" on path: DexPathList[[zip file "/data/app/com.example.test3-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.example.test3-1, /system/lib]]
03-14 03:42:13.249: E/AndroidRuntime(3052): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
03-14 03:42:13.249: E/AndroidRuntime(3052): at java.lang.ClassLoader.loadClass(ClassLoader.java:497)
03-14 03:42:13.249: E/AndroidRuntime(3052): at java.lang.ClassLoader.loadClass(ClassLoader.java:457)
03-14 03:42:13.249: E/AndroidRuntime(3052): at android.view.LayoutInflater.createView(LayoutInflater.java:559)
03-14 03:42:13.249: E/AndroidRuntime(3052): at android.view.LayoutInflater.onCreateView(LayoutInflater.java:652)
03-14 03:42:13.249: E/AndroidRuntime(3052): at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:66)
03-14 03:42:13.249: E/AndroidRuntime(3052): at android.view.LayoutInflater.onCreateView(LayoutInflater.java:669)
03-14 03:42:13.249: E/AndroidRuntime(3052): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:694)
03-14 03:42:13.249: E/AndroidRuntime(3052): ... 20 more
03-14 03:42:23.709: I/Process(3052): Sending signal. PID: 3052 SIG: 9
这是我的AndroidManifest.xml文件：
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.test3"
android:versionCode="1"
android:versionName="1.0c" >
<uses-sdk
android:minSdkVersion="11"
android:targetSdkVersion="18" />
<permission
android:name="com.example.test3.permission.MAPS_RECEIVE"
android:protectionLevel="signature" />
<uses-permission android:name="com.example.test3.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" />
<!-- 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" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.test3.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 Maps API Key -->
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="AIzaSyD1XTDQkNMnUtrnVvcocvGeZQsiBV3j3VA" />
</application>
</manifest>
这是activity_main.xml：
<?xml version="1.0" encoding="utf-8"?>
<MapFragment xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<fragment
android:id="@+id/map"
android:name="com.google.android.gms.maps.MapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</MapFragment>
和MainActivity.java：
package com.example.test3;
import android.app.Activity;
import android.os.Bundle;
import android.widget.Toast;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapFragment;
import com.example.test3.R;
public class MainActivity extends Activity {
private GoogleMap googleMap;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
try {
// Loading map
initializeMap();
} catch (Exception e) {
e.printStackTrace();
}
}
private void initializeMap() {
if (googleMap == null) {
googleMap = ((MapFragment) getFragmentManager().findFragmentById(
R.id.map)).getMap();
// check if map is created successfully or not
if (googleMap == null) {
Toast.makeText(getApplicationContext(),
"Sorry! unable to create maps", Toast.LENGTH_SHORT)
.show();
}
}
}
@Override
protected void onResume() {
super.onResume();
initializeMap();
}
}
任何想法会发生什么？
答案 0 :(得分：0)
我会再看看你的activity_main.xml。您正在指定<MapView ...>标记，该标记将尝试解析为android.view.MapView，从而导致您看到异常。
尝试以下方法;
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<fragment
android:id="@+id/map"
android:name="com.google.android.gms.maps.MapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</FrameLayout>
答案 1 :(得分：0)
- 首先，您应该检查APIKEY，并且包名与您的项目相同 - 更改activity_main的xml看起来像这样
<?xml version="1.0" encoding="utf-8"?>
<!--
See this page for more XML attribute options
https://developers.google.com/maps/documentation/android/map#using_xml_attributes
-->
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:map="http://schemas.android.com/apk/res-auto"
android:id="@+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:name="com.google.android.gms.maps.SupportMapFragment"
map:mapType="normal"/>
然后更改ActivityMain.java
package com.example.test3;
import android.app.Activity;
import android.os.Bundle;
import android.widget.Toast;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapFragment;
public class MainActivity extends Activity {
private GoogleMap googleMap;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
try {
// Loading map
initializeMap();
} catch (Exception e) {
e.printStackTrace();
}
}
private void initializeMap() {
if (googleMap == null) {
GoogleMap googleMap = ((SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map)).getMap();
// check if map is created successfully or not
if (googleMap == null) {
Toast.makeText(getApplicationContext(),
"Sorry! unable to create maps", Toast.LENGTH_SHORT)
.show();
}
}
}
@Override
protected void onResume() {
super.onResume();
initializeMap();
}
}
希望它可以帮到你：D