我有一個應用程序使用操作欄選項卡。我試圖升級應用程序以使用Google Maps V2(MapFragment),但是當MapFragment從主活動傳遞到碎片容器時,它全部崩潰。是否可以將Google Maps V2 MapFragment放入ActionBar選項卡中?
MapFragment:
public class EstablishmentGoogleMapFragment extends MapFragment {
private GoogleMap mMap;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View root = super.onCreateView(inflater, container, savedInstanceState);
mMap = getMap();
return root;
}
}
片段交易:
public void onTabSelected(Tab tab, FragmentTransaction ft) {
if(fragment == null){
String fragmentName = fragmentClass.getName();
fragment = Fragment.instantiate(activity, fragmentName);
ft.add(fragmentContainer, fragment, fragmentName);
} else {
ft.attach(fragment);
}
}
的logcat:
FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.rb.hellojson/com.rb.hellojson.EstablishmentGoogleMapFragment}:
java.lang.ClassCastException: com.rb.hellojson.EstablishmentGoogleMapFragment cannot be cast to android.app.Activity
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2024)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2125)
at android.app.ActivityThread.access$600(ActivityThread.java:140)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1227)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4898)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1006)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:773)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ClassCastException: com.rb.hellojson.EstablishmentGoogleMapFragment cannot be cast to android.app.Activity
at android.app.Instrumentation.newActivity(Instrumentation.java:1057)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2015)
... 11 more
什麼是崩潰(logcat)?你的代碼在哪裏? – 2013-04-05 18:37:39
我已更新問題正文 – wkdshot 2013-04-05 18:42:30
您可以添加Manifest文件嗎? – 2013-04-05 18:54:05