使用兼容性包android来扩充片段

我正在尝试使用向后兼容性包充满包含Fragment的布局。 我把这个jar文件放在我的项目的libs文件夹中。 我扩展了片段,然后通过设置Activity的contentView来尝试膨胀它

 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical"> <fragment class="com.test.fragments.AdFragment" android:layout_width="fill_parent" android:layout_height="wrap_content"/></LinearLayout> 

但是,当我设置内容视图失败与片段标记ClassNotFoundException 。 这里是logcat输出。

 java.lang.RuntimeException: Unable to start activity ComponentInfo{}: \ android.view.InflateException: Binary XML file line #51: \ Error inflating class fragment at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1777) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1793) at android.app.ActivityThread.access$1500(ActivityThread.java:123) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:939) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:123) at android.app.ActivityThread.main(ActivityThread.java:3848) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:507) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599) at dalvik.system.NativeStart.main(Native Method) Caused by: android.view.InflateException: Binary XML file line #51: \ Error inflating class fragment at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:581) at android.view.LayoutInflater.rInflate(LayoutInflater.java:623) at android.view.LayoutInflater.inflate(LayoutInflater.java:408) at android.view.LayoutInflater.inflate(LayoutInflater.java:320) at android.view.LayoutInflater.inflate(LayoutInflater.java:276) at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:211) at android.app.Activity.setContentView(Activity.java:1657) at com.test.base.activities.TabbedStoreActivity.onCreate(TabbedStoreActivity.java:46) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1731) ... 11 more Caused by: java.lang.ClassNotFoundException: android.view.fragment in loader \ dalvik.system.PathClassLoader[/system/framework/com.google.android.maps.jar: \ /data/app/com.test.test.apk] at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:240) at java.lang.ClassLoader.loadClass(ClassLoader.java:551) at java.lang.ClassLoader.loadClass(ClassLoader.java:511) at android.view.LayoutInflater.createView(LayoutInflater.java:471) at android.view.LayoutInflater.onCreateView(LayoutInflater.java:549) at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:66) at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:568) ... 20 more 

确保你的活动inheritance自FragmentActivity ,否则<fragment>不起作用。 这是一个示范项目,展示了这一点。