我正在尝试实施Sherlock导航抽屉
进入我的项目，但我有一些问题。解决了大部分问题之后，现在我在启动活动时遇到了非法状态异常。我不明白为什么。
02-05 15:09:32.994: E/AndroidRuntime(28194): FATAL EXCEPTION: main
02-05 15:09:32.994: E/AndroidRuntime(28194): Process: com.uy.cocoapp, PID: 28194
02-05 15:09:32.994: E/AndroidRuntime(28194): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.uy.cocoapp/com.uy.cocoapp.DrawerActivity}: java.lang.IllegalStateException: MainFragment must be attached to a SherlockFragmentActivity.
02-05 15:09:32.994: E/AndroidRuntime(28194): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2209)
02-05 15:09:32.994: E/AndroidRuntime(28194): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2269)
02-05 15:09:32.994: E/AndroidRuntime(28194): at android.app.ActivityThread.access$800(ActivityThread.java:139)
02-05 15:09:32.994: E/AndroidRuntime(28194): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1210)
02-05 15:09:32.994: E/AndroidRuntime(28194): at android.os.Handler.dispatchMessage(Handler.java:102)
02-05 15:09:32.994: E/AndroidRuntime(28194): at android.os.Looper.loop(Looper.java:136)
02-05 15:09:32.994: E/AndroidRuntime(28194): at android.app.ActivityThread.main(ActivityThread.java:5102)
02-05 15:09:32.994: E/AndroidRuntime(28194): at java.lang.reflect.Method.invokeNative(Native Method)
02-05 15:09:32.994: E/AndroidRuntime(28194): at java.lang.reflect.Method.invoke(Method.java:515)
02-05 15:09:32.994: E/AndroidRuntime(28194): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
02-05 15:09:32.994: E/AndroidRuntime(28194): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
02-05 15:09:32.994: E/AndroidRuntime(28194): at dalvik.system.NativeStart.main(Native Method)
02-05 15:09:32.994: E/AndroidRuntime(28194): Caused by: java.lang.IllegalStateException: MainFragment must be attached to a SherlockFragmentActivity.
02-05 15:09:32.994: E/AndroidRuntime(28194): at com.actionbarsherlock.app.SherlockFragment.onAttach(SherlockFragment.java:25)
02-05 15:09:32.994: E/AndroidRuntime(28194): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:883)
02-05 15:09:32.994: E/AndroidRuntime(28194): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1104)
02-05 15:09:32.994: E/AndroidRuntime(28194): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
02-05 15:09:32.994: E/AndroidRuntime(28194): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1467)
02-05 15:09:32.994: E/AndroidRuntime(28194): at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:570)
02-05 15:09:32.994: E/AndroidRuntime(28194): at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1194)
02-05 15:09:32.994: E/AndroidRuntime(28194): at android.app.Activity.performStart(Activity.java:5258)
02-05 15:09:32.994: E/AndroidRuntime(28194): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2182)
02-05 15:09:32.994: E/AndroidRuntime(28194): ... 11 more
从GitHub中提供的示例中，我更改了布局，替换了框架的textview
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<FrameLayout
android:id="@+id/drawer_content_frame"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<ListView android:id="@+id/left_drawer"
android:layout_width="300dp"
android:layout_height="match_parent"
android:layout_gravity="left"
android:background="@android:color/white"/>
</android.support.v4.widget.DrawerLayout>
这是MainFragment类，我也修改了所以我可以处理多个片段（我从制表符改为此，这就是为什么它们被称为TabFragment）
public class MainFragment extends SherlockFragment {
TabFragment1 fragment1;
TabFragment2 fragment2;
TabFragment3 fragment3;
private DrawerLayout mDrawerLayout;
private ListView listView;
//private TextView mContent;
private ActionBarHelper mActionBar;
private SherlockActionBarDrawerToggle mDrawerToggle;
public static Fragment newInstance() {
Fragment f = new MainFragment();
return f;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
fragment1 = new TabFragment1();
fragment2 = new TabFragment2();
fragment3 = new TabFragment3();
setRetainInstance(true);
setHasOptionsMenu(true);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.activity_drawer, container, false);
mDrawerLayout = (DrawerLayout) view.findViewById(R.id.drawer_layout);
listView = (ListView) view.findViewById(R.id.left_drawer);
//mContent = (TextView) view.findViewById(R.id.content_text);
mDrawerLayout.setDrawerListener(new DemoDrawerListener());
mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);
String[] TITLES = {
"Tu Codigo",
"Locales",
"Mapa",
"FAQ",
"Terms & Cond",
"Cerrar Sesion"
};
listView.setAdapter(new ArrayAdapter<String>(this.getActivity(), android.R.layout.simple_list_item_1, TITLES));
listView.setOnItemClickListener(new DrawerItemClickListener());
listView.setCacheColorHint(0);
listView.setScrollingCacheEnabled(false);
listView.setScrollContainer(false);
listView.setFastScrollEnabled(true);
listView.setSmoothScrollbarEnabled(true);
mActionBar = createActionBarHelper();
mActionBar.init();
// ActionBarDrawerToggle provides convenient helpers for tying together
// the
// prescribed interactions between a top-level sliding drawer and the
// action bar.
mDrawerToggle = new SherlockActionBarDrawerToggle(this.getActivity(), mDrawerLayout, R.drawable.ic_drawer_light, R.string.drawer_open, R.string.drawer_close);
mDrawerToggle.syncState();
return view;
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
inflater = ((SherlockFragmentActivity)getActivity()).getSupportMenuInflater();
inflater.inflate(R.menu.main, menu);
super.onCreateOptionsMenu(menu, inflater);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
/*
* The action bar home/up action should open or close the drawer.
* mDrawerToggle will take care of this.
*/
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
mDrawerToggle.onConfigurationChanged(newConfig);
}
/**
* This list item click listener implements very simple view switching by
* changing the primary content text. The drawer is closed when a selection
* is made.
*/
private class DrawerItemClickListener implements ListView.OnItemClickListener {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
//hacer switch con position e ir cambiando
selectItem(position);
mDrawerLayout.closeDrawer(listView);
}
}
private void selectItem(int position) {
FragmentTransaction ft = getSherlockActivity().getSupportFragmentManager().beginTransaction();
// Locate Position
switch (position) {
case 0:
ft.replace(R.id.drawer_content_frame, fragment1, "TabFragment1");
ft.addToBackStack("TabFragment1");
break;
case 1:
ft.replace(R.id.drawer_content_frame, fragment2, "TabFragment2");
ft.addToBackStack("TabFragment2");
break;
case 2:
ft.replace(R.id.drawer_content_frame, fragment3, "TabFragment3");
ft.addToBackStack("TabFragment3");
break;
}
ft.commit();
mDrawerLayout.closeDrawer(listView);
}
/**
* A drawer listener can be used to respond to drawer events such as
* becoming fully opened or closed. You should always prefer to perform
* expensive operations such as drastic relayout when no animation is
* currently in progress, either before or after the drawer animates.
*
* When using ActionBarDrawerToggle, all DrawerLayout listener methods
* should be forwarded if the ActionBarDrawerToggle is not used as the
* DrawerLayout listener directly.
*/
private class DemoDrawerListener implements DrawerLayout.DrawerListener {
@Override
public void onDrawerOpened(View drawerView) {
mDrawerToggle.onDrawerOpened(drawerView);
mActionBar.onDrawerOpened();
}
@Override
public void onDrawerClosed(View drawerView) {
mDrawerToggle.onDrawerClosed(drawerView);
mActionBar.onDrawerClosed();
}
@Override
public void onDrawerSlide(View drawerView, float slideOffset) {
mDrawerToggle.onDrawerSlide(drawerView, slideOffset);
}
@Override
public void onDrawerStateChanged(int newState) {
mDrawerToggle.onDrawerStateChanged(newState);
}
}
/**
* Create a compatible helper that will manipulate the action bar if
* available.
*/
private ActionBarHelper createActionBarHelper() {
return new ActionBarHelper();
}
private class ActionBarHelper {
private final ActionBar mActionBar;
private CharSequence mDrawerTitle;
private CharSequence mTitle;
private ActionBarHelper() {
mActionBar = ((SherlockFragmentActivity)getActivity()).getSupportActionBar();
}
public void init() {
mActionBar.setDisplayHomeAsUpEnabled(true);
mActionBar.setHomeButtonEnabled(true);
mTitle = mDrawerTitle = getActivity().getTitle();
}
/**
* When the drawer is closed we restore the action bar state reflecting
* the specific contents in view.
*/
public void onDrawerClosed() {
mActionBar.setTitle(mTitle);
}
/**
* When the drawer is open we set the action bar to a generic title. The
* action bar should only contain data relevant at the top level of the
* nav hierarchy represented by the drawer, as the rest of your content
* will be dimmed down and non-interactive.
*/
public void onDrawerOpened() {
mActionBar.setTitle(mDrawerTitle);
}
public void setTitle(CharSequence title) {
mTitle = title;
}
}
}
由于
答案 0 :(得分：1)
logcat说：
引起：java.lang.IllegalStateException：MainFragment必须附加到SherlockFragmentActivity。
即，您的活动必须延长SherlockFragmentActivity。