问题
I am using Google Map V2 API for the map. I have copied the google-play-services.jar in libs folder and set in the build path of eclipse.
I am getting exception as I added logcat.
Please help to get solve this issue.
home_map_view.xml
<fragment
android:id=\"@+id/map\"
android:layout_width=\"fill_parent\"
android:layout_height=\"fill_parent\"
android:name=\"com.google.android.gms.maps.MapFragment\"
android:layout_marginBottom=\"60dp\"/>
AndroidManifest.xml
<manifest xmlns:android=\"http://schemas.android.com/apk/res/android\"
package=\"com.example.app\"
android:versionCode=\"1\"
android:versionName=\"1.0\" >
<uses-sdk android:minSdkVersion=\"8\" android:targetSdkVersion=\"17\" />
<permission
android:name=\"com.example.app.permission.MAPS_RECEIVE\"
android:protectionLevel=\"signature\"/>
<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.CALL_PHONE\" />
<uses-permission android:name=\"android.permission.ACCESS_NETWORK_STATE\"/>
<uses-permission android:name=\"com.example.app.permission.MAPS_RECEIVE\"/>
<uses-feature
android:glEsVersion=\"0x00020000\"
android:required=\"true\"/>
<application android:icon=\"@drawable/ic_launcher\" android:label=\"@string/app_name\">
<meta-data
android:name=\"com.google.android.maps.v2.API_KEY\"
android:value=\"KEY\"/>
<activity android:name=\".MainActivity\" android:label=\"@string/app_name\" android:clearTaskOnLaunch=\"true\"
android:configChanges=\"orientation\" android:screenOrientation=\"portrait\">
<intent-filter>
<action android:name=\"android.intent.action.MAIN\" />
<category android:name=\"android.intent.category.LAUNCHER\" />
</intent-filter>
</activity>
<activity android:name=\".HomeMapView\" android:label=\"@string/title_home\" android:configChanges=\"orientation\" android:launchMode=\"singleTop\" />
</application>
</manifest>
HomeMapView.java
public class HomeMapView extends FragmentActivity implements OnTabChangeListener {
private GoogleMap mapView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.home_map_view);
// Getting reference to SupportMapFragment of the activity_main
SupportMapFragment fragment = new SupportMapFragment();
getSupportFragmentManager().beginTransaction() .add(R.id.map, fragment).commit();
// Getting Map for the SupportMapFragment
mapView = fragment.getMap();
mapView.setMyLocationEnabled(true);
}
}
Logcat:
05-15 23:17:52.843: E/AndroidRuntime(19782): FATAL EXCEPTION: main
05-15 23:17:52.843: E/AndroidRuntime(19782): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.app/com.example.app.HomeMapView}: android.view.InflateException: Binary XML file line #13: Error inflating class fragment
05-15 23:17:52.843: E/AndroidRuntime(19782): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1651)
05-15 23:17:52.843: E/AndroidRuntime(19782): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667)
05-15 23:17:52.843: E/AndroidRuntime(19782): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
05-15 23:17:52.843: E/AndroidRuntime(19782): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935)
05-15 23:17:52.843: E/AndroidRuntime(19782): at android.os.Handler.dispatchMessage(Handler.java:99)
05-15 23:17:52.843: E/AndroidRuntime(19782): at android.os.Looper.loop(Looper.java:130)
05-15 23:17:52.843: E/AndroidRuntime(19782): at android.app.ActivityThread.main(ActivityThread.java:3687)
05-15 23:17:52.843: E/AndroidRuntime(19782): at java.lang.reflect.Method.invokeNative(Native Method)
05-15 23:17:52.843: E/AndroidRuntime(19782): at java.lang.reflect.Method.invoke(Method.java:507)
05-15 23:17:52.843: E/AndroidRuntime(19782): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
05-15 23:17:52.843: E/AndroidRuntime(19782): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625)
05-15 23:17:52.843: E/AndroidRuntime(19782): at dalvik.system.NativeStart.main(Native Method)
05-15 23:17:52.843: E/AndroidRuntime(19782): Caused by: android.view.InflateException: Binary XML file line #13: Error inflating class fragment
05-15 23:17:52.843: E/AndroidRuntime(19782): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:587)
05-15 23:17:52.843: E/AndroidRuntime(19782): at android.view.LayoutInflater.rInflate(LayoutInflater.java:623)
05-15 23:17:52.843: E/AndroidRuntime(19782): at android.view.LayoutInflater.inflate(LayoutInflater.java:408)
05-15 23:17:52.843: E/AndroidRuntime(19782): at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
05-15 23:17:52.843: E/AndroidRuntime(19782): at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
05-15 23:17:52.843: E/AndroidRuntime(19782): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:216)
05-15 23:17:52.843: E/AndroidRuntime(19782): at android.app.Activity.setContentView(Activity.java:1660)
05-15 23:17:52.843: E/AndroidRuntime(19782): at com.example.app.HomeMapView.onCreate(HomeMapView.java:61)
05-15 23:17:52.843: E/AndroidRuntime(19782): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
05-15 23:17:52.843: E/AndroidRuntime(19782): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615)
05-15 23:17:52.843: E/AndroidRuntime(19782): ... 11 more
05-15 23:17:52.843: E/AndroidRuntime(19782): Caused by: android.support.v4.app.Fragment$InstantiationException: Unable to instantiate fragment com.google.android.gms.maps.MapFragment: make sure class name exists, is public, and has an empty constructor that is public
05-15 23:17:52.843: E/AndroidRuntime(19782): at android.support.v4.app.Fragment.instantiate(Fragment.java:395)
05-15 23:17:52.843: E/AndroidRuntime(19782): at android.support.v4.app.Fragment.instantiate(Fragment.java:363)
05-15 23:17:52.843: E/AndroidRuntime(19782): at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:264)
05-15 23:17:52.843: E/AndroidRuntime(19782): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:563)
05-15 23:17:52.843: E/AndroidRuntime(19782): ... 20 more
05-15 23:17:52.843: E/AndroidRuntime(19782): Caused by: java.lang.ClassNotFoundException: com.google.android.gms.maps.MapFragment in loader dalvik.system.PathClassLoader[/system/framework/com.google.android.maps.jar:/data/app/com.example.app-2.apk]
05-15 23:17:52.843: E/AndroidRuntime(19782): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:240)
05-15 23:17:52.843: E/AndroidRuntime(19782): at java.lang.ClassLoader.loadClass(ClassLoader.java:551)
05-15 23:17:52.843: E/AndroidRuntime(19782): at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
05-15 23:17:52.843: E/AndroidRuntime(19782): at android.support.v4.app.Fragment.instantiate(Fragment.java:385)
05-15 23:17:52.843: E/AndroidRuntime(19782): ... 23 more
回答1:
You problem is the way you added google-play-services to your project:
I have copied the google-play-services.jar in libs folder and set in the build path of eclipse.
This is wrong! Read the first 3 steps of this blog post I wrote to get an idea of how to do it correctly:
Google Maps API V2
In short, you should import google-play-services as a project in your workspace.
and then reference it from your project.
this should be the result:
回答2:
Use support Map fragment in place of Map fragment. Make sure you have added the support libray
<fragment
android:id="@+id/map"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:name="com.google.android.gms.maps.SupportMapFragment "
android:layout_marginBottom="60dp"/>
Second you should not copy the jar file to your build path.
You should refer the google play services library project in your map project.
Import your library project to your worksace. import the same to eclipse.
Right click on your project. goto properties. Choose android. click android. browse and add the library project.
回答3:
If everything is woking same as google code then please check manifest file in my case i added geo key and map key that's why exception occurs,
Note - do not add two keys in manifest file remove map key
meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="@string/google_maps_key"/>
add this code.
<meta-data
android:name="com.google.android.geo.API_KEY"
android:value="@string/auto_location"/>
<meta-data
android:name="com.google.android.gms.version"
android:value="@integer/google_play_services_version"/>
来源：https://stackoverflow.com/questions/16572020/error-java-lang-classnotfoundexception-com-google-android-gms-maps-mapfragment