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我有持有片段了這種活動佈局：活動地圖碎片碰撞
<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" >
...
<fragment
android:id="@+id/HomeActivity_container_fragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_below="@+id/HomeActivity_navigation_LinearLayout" />
</RelativeLayout>
這裏是活動：
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.home_activity); //crashes here
init();
changeFragment(R.id.HomeActivity_container_fragment, new MapFragment());
}
這裏是changeFragment功能：
protected void changeFragment(int fragmentContainer, Fragment newFragment)
{
FragmentTransaction transaction = getFragmentManager().beginTransaction();
transaction.replace(fragmentContainer, newFragment);
transaction.addToBackStack(null);
transaction.commit();
}
這裏是地圖片段的佈局：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<fragment
android:id="@+id/MapFragment_map_Fragment"
class="com.google.android.gms.maps.MapFragment"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true" />
</RelativeLayout>
，這裏是地圖片段類：
public class MapFragment extends Fragment
{
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
View rootView = inflater.inflate(R.layout.map_fragment, container, false);
return rootView;
}
}
諾爾：的是谷歌地圖確認沒有問題，因爲如果我把我的活動片段容器中的地圖是工作。
下面是我從logcat中獲取異常：
02-10 20:23:33.591: E/AndroidRuntime(2009): FATAL EXCEPTION: main
02-10 20:23:33.591: E/AndroidRuntime(2009): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.evapp.activities/com.evapp.activities.HomeActivity}: android.view.InflateException: Binary XML file line #50: Error inflating class fragment
02-10 20:23:33.591: E/AndroidRuntime(2009): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059)
02-10 20:23:33.591: E/AndroidRuntime(2009): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
02-10 20:23:33.591: E/AndroidRuntime(2009): at android.app.ActivityThread.access$600(ActivityThread.java:130)
02-10 20:23:33.591: E/AndroidRuntime(2009): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
02-10 20:23:33.591: E/AndroidRuntime(2009): at android.os.Handler.dispatchMessage(Handler.java:99)
02-10 20:23:33.591: E/AndroidRuntime(2009): at android.os.Looper.loop(Looper.java:137)
02-10 20:23:33.591: E/AndroidRuntime(2009): at android.app.ActivityThread.main(ActivityThread.java:4745)
02-10 20:23:33.591: E/AndroidRuntime(2009): at java.lang.reflect.Method.invokeNative(Native Method)
02-10 20:23:33.591: E/AndroidRuntime(2009): at java.lang.reflect.Method.invoke(Method.java:511)
02-10 20:23:33.591: E/AndroidRuntime(2009): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
02-10 20:23:33.591: E/AndroidRuntime(2009): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
02-10 20:23:33.591: E/AndroidRuntime(2009): at dalvik.system.NativeStart.main(Native Method)
02-10 20:23:33.591: E/AndroidRuntime(2009): Caused by: android.view.InflateException: Binary XML file line #50: Error inflating class fragment
02-10 20:23:33.591: E/AndroidRuntime(2009): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)
02-10 20:23:33.591: E/AndroidRuntime(2009): at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
02-10 20:23:33.591: E/AndroidRuntime(2009): at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
02-10 20:23:33.591: E/AndroidRuntime(2009): at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
02-10 20:23:33.591: E/AndroidRuntime(2009): at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
02-10 20:23:33.591: E/AndroidRuntime(2009): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:256)
02-10 20:23:33.591: E/AndroidRuntime(2009): at android.app.Activity.setContentView(Activity.java:1867)
02-10 20:23:33.591: E/AndroidRuntime(2009): at com.evapp.activities.HomeActivity.onCreate(HomeActivity.java:21)
02-10 20:23:33.591: E/AndroidRuntime(2009): at android.app.Activity.performCreate(Activity.java:5008)
02-10 20:23:33.591: E/AndroidRuntime(2009): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)
02-10 20:23:33.591: E/AndroidRuntime(2009): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023)
02-10 20:23:33.591: E/AndroidRuntime(2009): ... 11 more
02-10 20:23:33.591: E/AndroidRuntime(2009): Caused by: java.lang.NullPointerException: name == null
02-10 20:23:33.591: E/AndroidRuntime(2009): at java.lang.VMClassLoader.findLoadedClass(Native Method)
02-10 20:23:33.591: E/AndroidRuntime(2009): at java.lang.ClassLoader.findLoadedClass(ClassLoader.java:354)
02-10 20:23:33.591: E/AndroidRuntime(2009): at java.lang.ClassLoader.loadClass(ClassLoader.java:491)
02-10 20:23:33.591: E/AndroidRuntime(2009): at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
02-10 20:23:33.591: E/AndroidRuntime(2009): at android.support.v4.app.Fragment.isSupportFragmentClass(Fragment.java:436)
02-10 20:23:33.591: E/AndroidRuntime(2009): at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:255)
02-10 20:23:33.591: E/AndroidRuntime(2009): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:676)
02-10 20:23:33.591: E/AndroidRuntime(2009): ... 21 more