android– 用于TabActivity的BadTokenException ActivityGroup

概述我需要在我的应用程序中实现TabHost中的嵌套活动.我使用这样的ActivityGroup类：publicclassCustomActivityGroupextendsActivityGroup{ViewrootView;publicstaticCustomActivityGroupgroup;privateArrayList<View>history;@OverrideprotectedvoidonCrea

我需要在我的应用程序中实现TabHost中的嵌套活动.我使用这样的ActivityGroup类：

  public class CustomActivityGroup extends ActivityGroup {VIEw rootVIEw;public static CustomActivityGroup group;private ArrayList<VIEw> history;@OverrIDeprotected voID onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    this.history = new ArrayList<VIEw>(); group = this;      VIEw vIEw = getLocalActivityManager().startActivity("LoginActivity", new Intent(this,Registeractivity.class) .addFlags(Intent.FLAG_ACTIVITY_CLEAR_top))      .getDecorVIEw();      replaceVIEw(vIEw);}@OverrIDeprotected voID onResume() {    super.onResume();    this.history = new ArrayList<VIEw>();    group = this;}public voID replaceVIEw(VIEw v) {    if (history.size() == 0) {        if (rootVIEw != null) {            history.add(rootVIEw);            rootVIEw = null;        }    }    history.add(v);      setContentVIEw(v);}public voID back() {    try {        if (history.size() > 0) {        history.remove(history.size() - 1);        if (history.size() > 0) {            setContentVIEw(history.get(history.size() - 1));        } else {            finish();        }    } else {        finish();    }    } catch (Exception ex) {    }}public int getHistorySize() {    return history.size();}@OverrIDepublic voID onBackpressed() {    try {        CustomActivityGroup.group.back();    } catch (Exception ex) {    }    return;}}

在我的tabactivity中：

  intent = new Intent().setClass(this, CustomActivityGroup.class);    spec = tabHost.newTabSpec("tab_2").setIndicator("Sign up",getResources().getDrawable(R.drawable.signup)).setContent(intent);    tabHost.addTab(spec);

但当我点击相应的标签时,我得到了

 FATAL EXCEPTION: main java.lang.RuntimeException: Unable to start activity ComponentInfo{com.assignmentexpert/com.activitygroups.CustomActivityGroup}: java.lang.RuntimeException: Unable to start activity ComponentInfo{com.assignmentexpert/com.assignmentexpert.Registeractivity}: androID.vIEw.WindowManager$BadTokenException: Unable to add window -- token androID.app.LocalActivityManager$LocalActivityRecord@405ceb00 is not valID; is your activity running?    at androID.app.ActivityThread.performlaunchActivity(ActivityThread.java:1651)    at androID.app.ActivityThread.startActivityNow(ActivityThread.java:1491)    at androID.app.LocalActivityManager.movetoState(LocalActivityManager.java:127)    at androID.app.LocalActivityManager.startActivity(LocalActivityManager.java:339)    at androID.Widget.TabHost$IntentContentStrategy.getContentVIEw(TabHost.java:676)    at androID.Widget.TabHost.setCurrentTab(TabHost.java:348)    at androID.Widget.TabHost.onTabSelectionChanged(TabHost.java:141)    at androID.Widget.TabWidget$TabClickListener.onClick(TabWidget.java:456)    at androID.vIEw.VIEw.performClick(VIEw.java:2485)    at androID.vIEw.VIEw$PerformClick.run(VIEw.java:9080)    at androID.os.Handler.handleCallback(Handler.java:587)    at androID.os.Handler.dispatchMessage(Handler.java:92)    at androID.os.Looper.loop(Looper.java:123)    at androID.app.ActivityThread.main(ActivityThread.java:3687)    at java.lang.reflect.Method.invokeNative(Native Method)    at java.lang.reflect.Method.invoke(Method.java:507)    at com.androID.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)    at com.androID.internal.os.ZygoteInit.main(ZygoteInit.java:625)    at dalvik.system.NativeStart.main(Native Method)Caused by: java.lang.RuntimeException: Unable to start activity ComponentInfo{com.assignmentexpert/com.assignmentexpert.Registeractivity}: androID.vIEw.WindowManager$BadTokenException: Unable to add window -- token androID.app.LocalActivityManager$LocalActivityRecord@405ceb00 is not valID; is your activity running?    at androID.app.ActivityThread.performlaunchActivity(ActivityThread.java:1651)    at androID.app.ActivityThread.startActivityNow(ActivityThread.java:1491)    at androID.app.LocalActivityManager.movetoState(LocalActivityManager.java:127)    at androID.app.LocalActivityManager.startActivity(LocalActivityManager.java:339)    at com.activitygroups.CustomActivityGroup.onCreate(CustomActivityGroup.java:31)    at androID.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)    at androID.app.ActivityThread.performlaunchActivity(ActivityThread.java:1615)    ... 18 more Caused by:  Unable to add window -- token androID.app.LocalActivityManager$LocalActivityRecord@405ceb00 is not valID; is your activity running?    at androID.vIEw.VIEwRoot.setVIEw(VIEwRoot.java:532)    at androID.vIEw.WindowManagerImpl.addVIEw(WindowManagerImpl.java:177)    at androID.vIEw.WindowManagerImpl.addVIEw(WindowManagerImpl.java:91)    at androID.vIEw.Window$LocalWindowManager.addVIEw(Window.java:424)    at androID.app.Dialog.show(Dialog.java:241)    at com.asynctaskbase.AbstractTaskProgressDialogFragment.onCreateDialog(AbstractTaskProgressDialogFragment.java:68)    at com.asynctaskbase.AbstractTaskProgressDialogFragment.onCreateDialog(AbstractTaskProgressDialogFragment.java:1)    at androID.support.v4.app.DialogFragment.getLayoutInflater(DialogFragment.java:295)    at androID.support.v4.app.FragmentManagerImpl.movetoState(FragmentManager.java:871)    at androID.support.v4.app.FragmentManagerImpl.movetoState(FragmentManager.java:1083)    at androID.support.v4.app.BackStackRecord.run(BackStackRecord.java:635)    at androID.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1431)    at androID.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:523)    at androID.app.Instrumentation.callActivityOnStart(Instrumentation.java:1129)    at androID.app.Activity.performStart(Activity.java:3791)    at androID.app.ActivityThread.performlaunchActivity(ActivityThread.java:1624)    ... 24 more

我做错了什么？

解决方法:

我找到了这个问题的原因.我将FragmentActivitIEs添加到ActivityGroup,然后在TabHost中使用它们.当我点击调用ProgressDialog的按钮时,我得到了这个例外.我应该像这样创造它

progressDialog = new ProgressDialog(getActivity().getParent());

不是

 progressDialog = new ProgressDialog(getActivity());

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