问题
I created a new MapActivity class MapProba.
From main Activity I want to show MapActivity: on button click event I put this code:
Intent myIntent = new Intent(this, com.art.mode.MapProba.class);
startActivity(myIntent);
But I receive force close error.
In my xml file I use this code:
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<com.google.android.maps.MapView
android:id="@+id/map_view"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:apiKey="SomeGoogleMapAPIKeyHere" />
</LinearLayout>
In log I receive this error :
08-31 04:47:10.218: ERROR/AndroidRuntime(593): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.art.mode/com.art.mode.MapProba}:
android.view.InflateException: Binary XML file line #7: Error inflating class com.google.android.maps.MapView
Line 7 is: com.google.android.maps.MapView
When I remove this code form xml file:
<com.google.android.maps.MapView
android:id="@+id/map_view"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:apiKey="SomeGoogleMapAPIKeyHere" />
Blank black screen appears (there is no error)
In manifest file I have:
uses-permission android:name="android.permission.INTERNET"
uses-permission android:name="android.permission.ACCESS_LOCATION"
<uses-library android:name="com.google.android.maps" />
Any idea?
Thanks
UPDATE
08-31 12:22:00.648: ERROR/AndroidRuntime(656): FATAL EXCEPTION: main
08-31 12:22:00.648: ERROR/AndroidRuntime(656): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.art.mode/com.art.mode.MapProba}: android.view.InflateException: Binary XML file line #7: Error inflating class com.google.android.maps.MapView
08-31 12:22:00.648: ERROR/AndroidRuntime(656): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
08-31 12:22:00.648: ERROR/AndroidRuntime(656): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
08-31 12:22:00.648: ERROR/AndroidRuntime(656): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
08-31 12:22:00.648: ERROR/AndroidRuntime(656): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
08-31 12:22:00.648: ERROR/AndroidRuntime(656): at android.os.Handler.dispatchMessage(Handler.java:99)
08-31 12:22:00.648: ERROR/AndroidRuntime(656): at android.os.Looper.loop(Looper.java:123)
08-31 12:22:00.648: ERROR/AndroidRuntime(656): at android.app.ActivityThread.main(ActivityThread.java:4627)
08-31 12:22:00.648: ERROR/AndroidRuntime(656): at java.lang.reflect.Method.invokeNative(Native Method)
08-31 12:22:00.648: ERROR/AndroidRuntime(656): at java.lang.reflect.Method.invoke(Method.java:521)
08-31 12:22:00.648: ERROR/AndroidRuntime(656): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
08-31 12:22:00.648: ERROR/AndroidRuntime(656): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
08-31 12:22:00.648: ERROR/AndroidRuntime(656): at dalvik.system.NativeStart.main(Native Method)
08-31 12:22:00.648: ERROR/AndroidRuntime(656): Caused by: android.view.InflateException: Binary XML file line #7: Error inflating class com.google.android.maps.MapView
08-31 12:22:00.648: ERROR/AndroidRuntime(656): at android.view.LayoutInflater.createView(LayoutInflater.java:513)
08-31 12:22:00.648: ERROR/AndroidRuntime(656): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:565)
08-31 12:22:00.648: ERROR/AndroidRuntime(656): at android.view.LayoutInflater.rInflate(LayoutInflater.java:618)
08-31 12:22:00.648: ERROR/AndroidRuntime(656): at android.view.LayoutInflater.inflate(LayoutInflater.java:407)
08-31 12:22:00.648: ERROR/AndroidRuntime(656): at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
08-31 12:22:00.648: ERROR/AndroidRuntime(656): at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
08-31 12:22:00.648: ERROR/AndroidRuntime(656): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:198)
08-31 12:22:00.648: ERROR/AndroidRuntime(656): at android.app.Activity.setContentView(Activity.java:1647)
08-31 12:22:00.648: ERROR/AndroidRuntime(656): at com.art.mode.MapProba.onCreate(MapProba.java:12)
08-31 12:22:00.648: ERROR/AndroidRuntime(656): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
08-31 12:22:00.648: ERROR/AndroidRuntime(656): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
08-31 12:22:00.648: ERROR/AndroidRuntime(656): ... 11 more
08-31 12:22:00.648: ERROR/AndroidRuntime(656): Caused by: java.lang.reflect.InvocationTargetException
08-31 12:22:00.648: ERROR/AndroidRuntime(656): at com.google.android.maps.MapView.<init>(MapView.java:238)
08-31 12:22:00.648: ERROR/AndroidRuntime(656): at java.lang.reflect.Constructor.constructNative(Native Method)
08-31 12:22:00.648: ERROR/AndroidRuntime(656): at java.lang.reflect.Constructor.newInstance(Constructor.java:446)
08-31 12:22:00.648: ERROR/AndroidRuntime(656): at android.view.LayoutInflater.createView(LayoutInflater.java:500)
08-31 12:22:00.648: ERROR/AndroidRuntime(656): ... 21 more
08-31 12:22:00.648: ERROR/AndroidRuntime(656): Caused by: java.lang.NullPointerException
08-31 12:22:00.648: ERROR/AndroidRuntime(656): at com.google.android.maps.MapActivity.setupMapView(MapActivity.java:382)
08-31 12:22:00.648: ERROR/AndroidRuntime(656): at com.google.android.maps.MapView.<init>(MapView.java:280)
08-31 12:22:00.648: ERROR/AndroidRuntime(656): at com.google.android.maps.MapView.<init>(MapView.java:255)
08-31 12:22:00.648: ERROR/AndroidRuntime(656): ... 25 more
回答1:
I had the same problem, you have to put this tag in your AndroidManifest.xml
<uses-library android:name="com.google.android.maps"/>
It should be inside:
<application>
<uses-library android:name="com.google.android.maps"/>
</application>
!!!!never, never outside
and use this on yous activity
Intent myIntent = new Intent(getBaseContext(), MapProba.class);
startActivity(myIntent);
回答2:
Can you send more of the error log, what comes right after
XML file line #7: Error inflating class com.google.android.maps.MapView ...
It will probably tell why it was not able to inflate this class, whether it is not present, or it is missing libraries...etc...
-- After your update --
What kind of device are you running this on ?
If you use the emulator, you need to use the Google API as your build target.
If you use a real device, it should just work fine on a G1, but if it is a device where you ported Android from AOSP, you most likely do not have the right libraries installed.
Specifically, you should have files like com.google.android.maps.jar and com.google.android.maps.xml There is a good tutorial there to use the mapview : http://developer.android.com/resources/tutorials/views/hello-mapview.html
回答3:
If you are using an external device for debugging most probably it does not have the right libraries installed.
Especially for archos users check this out http://code.google.com/p/archos-apps-installer/downloads/detail?name=gAppsInstaller_v5-final.apk
回答4:
On your Maps form class, did you use extends MapActivity instead of extends Activity? That screw me for awhile before I realized that I was using the wrong extended class. :P
来源：https://stackoverflow.com/questions/3605722/mapactivity-error-force-close