好的,这是问题所在,我有一个片段活动,里面有两个片段.一个是ListFragment,另一个是Fragment.所以,我想根据选择的项目显示片段.这是问题所在.如果我在横向模式或纵向模式下启动此片段活动,它可以正常工作.无论如何,当我改变到另一个方向时,它总是崩溃.错误是关于充气器,类似onCreateView,但我查看了其他帖子,其他解决方案,如onConfigurationChanges,onSaveInstances,没有从名称更改为类.所有都有相同的错误.所以,我希望有人帮助我.我确实有布局 – 土地和布局,仍然无法正常工作.
这是我的代码.
activity_pontix(陆地和肖像模式)
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#CCFF99" android:orientation="vertical" > <TextView android:id="@+id/Pontix" android:layout_width="match_parent" android:layout_height="50dp" android:gravity="center_horizontal" android:text="@string/pontix" android:background="#ffffff" android:textColor="#000000" android:textSize="40dp" /> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="horizontal" > <fragment android:id="@+id/sideMenu" android:name="com.example.pontix.SideMenu" android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="3" /> <fragment android:id="@+id/content" android:name="com.example.pontix.ContentPreview" android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1" /> </LinearLayout> </LinearLayout>
SideMenu.java
public class SideMenu extends ListFragment { OnMenuSelectedListener setSelected; public interface OnMenuSelectedListener { public void onItemSelected(int position); } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); int layout = R.layout.side_menu_item; setlistadapter(new ArrayAdapter<String>(getActivity(),layout,MenuItem.Items)); } @Override public void onStart() { super.onStart(); if (getFragmentManager().findFragmentById(R.id.sideMenu) != null) { getListView().setChoiceMode(ListView.CHOICE_MODE_SINGLE); } } @Override public void onAttach(Activity activity) { super.onAttach(activity); try { setSelected = (OnMenuSelectedListener) activity; } catch (ClassCastException e) { throw new ClassCastException(activity.toString() + " must implement OnMenuSelectedListener"); } } @Override public void onListItemClick(ListView l,View v,int position,long id) { setSelected.onItemSelected(position); // Set the item as checked to be highlighted when in two-pane layout getListView().setItemChecked(position,true); } }
ContentPreview.java
public class ContentPreview extends Fragment { final static String ARG_POSITION = "position"; int mCurrentPosition = -1; @Override public View onCreateView(LayoutInflater inflater,ViewGroup container,Bundle savedInstanceState) { if (savedInstanceState != null) { mCurrentPosition = savedInstanceState.getInt(ARG_POSITION); } return inflater.inflate(R.layout.content_view,container,false); } @Override public void onStart() { super.onStart(); Bundle args = getArguments(); if (args != null) { updateContentPreview(args.getInt(ARG_POSITION)); } else if (mCurrentPosition != -1) { updateContentPreview(mCurrentPosition); } } public void updateContentPreview(int position) { switch(position) { case 1: { TextView article = (TextView) getActivity().findViewById(R.id.contentView); article.setText("Voce estava na aba Gincana"); mCurrentPosition = position; break; } case 2: { TextView article = (TextView) getActivity().findViewById(R.id.contentView); article.setText("Voce estava na aba Tarefas"); mCurrentPosition = position; break; } case 3: { TextView article = (TextView) getActivity().findViewById(R.id.contentView); article.setText("Voce estava na aba Ranking"); mCurrentPosition = position; break; } case 4: { TextView article = (TextView) getActivity().findViewById(R.id.contentView); article.setText("Voce estava na aba Amigos"); mCurrentPosition = position; break; } case 5: { TextView article = (TextView) getActivity().findViewById(R.id.contentView); article.setText("Voce estava na aba Perfil"); mCurrentPosition = position; break; } case 6: { TextView article = (TextView) getActivity().findViewById(R.id.contentView); article.setText("Voce estava na aba Sobre"); mCurrentPosition = position; break; } } } @Override public void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); outState.putInt(ARG_POSITION,mCurrentPosition); } }
PontixActivity.java
public class PontixActivity extends FragmentActivity implements SideMenu.OnMenuSelectedListener { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_pontix); Intent intent = getIntent(); int code = intent.getIntExtra(GincanaActivity.EXTRA_CONTENT,0); SideMenu sideMenu = new SideMenu(); sideMenu.setArguments(getIntent().getExtras()); getSupportFragmentManager().beginTransaction().add(R.id.sideMenu,sideMenu).commit(); ContentPreview contentFragment = (ContentPreview) getSupportFragmentManager().findFragmentById(R.id.content); if (contentFragment != null) { contentFragment.updateContentPreview(code); } } public void onItemSelected(int position) { switch(position) { case 0: { Intent contentView = new Intent(this,GincanaActivity.class); startActivity(contentView); break; } case 1: { Intent contentView = new Intent(this,TarefaActivity.class); startActivity(contentView); break; } case 2: { Intent contentView = new Intent(this,RankingActivity.class); startActivity(contentView); break; } case 3: { Intent contentView = new Intent(this,MainActivity.class); startActivity(contentView); break; } case 4: { Intent contentView = new Intent(this,MainActivity.class); startActivity(contentView); break; } case 5: { Intent contentView = new Intent(this,MainActivity.class); startActivity(contentView); break; } } } }
这是错误日志.
08-03 13:13:58.745: W/IInputConnectionWrapper(13847): showStatusIcon on inactive InputConnection 08-03 13:14:09.065: D/AbsListView(13847): Get MotionRecognitionManager 08-03 13:14:09.065: D/AbsListView(13847): Get MotionRecognitionManager 08-03 13:14:12.310: D/AndroidRuntime(13847): Shutting down VM 08-03 13:14:12.310: W/dalvikvm(13847): threadid=1: thread exiting with uncaught exception (group=0x40c661f8) 08-03 13:14:12.340: E/AndroidRuntime(13847): FATAL EXCEPTION: main 08-03 13:14:12.340: E/AndroidRuntime(13847): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.pontix/com.example.pontix.PontixActivity}: android.view.InflateException: Binary XML file line #21: Error inflating class fragment 08-03 13:14:12.340: E/AndroidRuntime(13847): at android.app.ActivityThread.performlaunchActivity(ActivityThread.java:1970) 08-03 13:14:12.340: E/AndroidRuntime(13847): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1995) 08-03 13:14:12.340: E/AndroidRuntime(13847): at android.app.ActivityThread.handlerelaunchActivity(ActivityThread.java:3365) 08-03 13:14:12.340: E/AndroidRuntime(13847): at android.app.ActivityThread.access$700(ActivityThread.java:128) 08-03 13:14:12.340: E/AndroidRuntime(13847): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1165) 08-03 13:14:12.340: E/AndroidRuntime(13847): at android.os.Handler.dispatchMessage(Handler.java:99) 08-03 13:14:12.340: E/AndroidRuntime(13847): at android.os.Looper.loop(Looper.java:137) 08-03 13:14:12.340: E/AndroidRuntime(13847): at android.app.ActivityThread.main(ActivityThread.java:4514) 08-03 13:14:12.340: E/AndroidRuntime(13847): at java.lang.reflect.Method.invokeNative(Native Method) 08-03 13:14:12.340: E/AndroidRuntime(13847): at java.lang.reflect.Method.invoke(Method.java:511) 08-03 13:14:12.340: E/AndroidRuntime(13847): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:993) 08-03 13:14:12.340: E/AndroidRuntime(13847): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:760) 08-03 13:14:12.340: E/AndroidRuntime(13847): at dalvik.system.NativeStart.main(Native Method) 08-03 13:14:12.340: E/AndroidRuntime(13847): Caused by: android.view.InflateException: Binary XML file line #21: Error inflating class fragment 08-03 13:14:12.340: E/AndroidRuntime(13847): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:697) 08-03 13:14:12.340: E/AndroidRuntime(13847): at android.view.LayoutInflater.rInflate(LayoutInflater.java:739) 08-03 13:14:12.340: E/AndroidRuntime(13847): at android.view.LayoutInflater.rInflate(LayoutInflater.java:742) 08-03 13:14:12.340: E/AndroidRuntime(13847): at android.view.LayoutInflater.inflate(LayoutInflater.java:489) 08-03 13:14:12.340: E/AndroidRuntime(13847): at android.view.LayoutInflater.inflate(LayoutInflater.java:396) 08-03 13:14:12.340: E/AndroidRuntime(13847): at android.view.LayoutInflater.inflate(LayoutInflater.java:352) 08-03 13:14:12.340: E/AndroidRuntime(13847): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:280) 08-03 13:14:12.340: E/AndroidRuntime(13847): at android.app.Activity.setContentView(Activity.java:1892) 08-03 13:14:12.340: E/AndroidRuntime(13847): at com.example.pontix.PontixActivity.onCreate(PontixActivity.java:13) 08-03 13:14:12.340: E/AndroidRuntime(13847): at android.app.Activity.performCreate(Activity.java:4562) 08-03 13:14:12.340: E/AndroidRuntime(13847): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1053) 08-03 13:14:12.340: E/AndroidRuntime(13847): at android.app.ActivityThread.performlaunchActivity(ActivityThread.java:1934) 08-03 13:14:12.340: E/AndroidRuntime(13847): ... 12 more 08-03 13:14:12.340: E/AndroidRuntime(13847): Caused by: java.lang.IllegalStateException: Fragment com.example.pontix.SideMenu did not create a view. 08-03 13:14:12.340: E/AndroidRuntime(13847): at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:295) 08-03 13:14:12.340: E/AndroidRuntime(13847): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:669) 08-03 13:14:12.340: E/AndroidRuntime(13847): ... 23 more 08-03 13:14:12.355: D/dalvikvm(13847): GC_CONCURRENT freed 152K,3% free 13194K/13575K,paused 1ms+3ms 08-03 13:14:12.355: D/AbsListView(13847): [unregisterDoubleTapMotionListener] 08-03 13:14:12.355: I/MotionRecognitionManager(13847): .unregisterListener : / listener count = 0->0,listener=android.widget.AbsListView$4@419278a8 08-03 13:14:12.355: D/AbsListView(13847): [unregisterDoubleTapMotionListener] 08-03 13:14:12.355: I/MotionRecognitionManager(13847): .unregisterListener : / listener count = 0->0,listener=android.widget.AbsListView$4@4192d5e0 08-03 13:14:12.360: D/AbsListView(13847): [unregisterDoubleTapMotionListener] 08-03 13:14:12.360: I/MotionRecognitionManager(13847): .unregisterListener : / listener count = 0->0,listener=android.widget.AbsListView$4@41963500
解决方法
你的两个片段都需要公共的空构造函数:
public class SideMenu extends ListFragment { public SideMenu(){} ... public class ContentPreview extends Fragment { public ContentPreview(){} ...
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