相关疑难解决方法(0)

我有一个Live Android应用程序,从市场我收到了以下堆栈跟踪,我不知道为什么它发生在应用程序代码中没有发生,但它是由应用程序中的一些或其他事件引起的(假设)

我没有使用Fragments,仍然有FragmentManager的引用.如果任何机构可以对某些隐藏的事实进行一些说明以避免此类问题:

java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState
at android.app.FragmentManagerImpl.checkStateLoss(FragmentManager.java:1109)
at android.app.FragmentManagerImpl.popBackStackImmediate(FragmentManager.java:399)
at android.app.Activity.onBackPressed(Activity.java:2066)
at android.app.Activity.onKeyDown(Activity.java:1962)
at android.view.KeyEvent.dispatch(KeyEvent.java:2482)
at android.app.Activity.dispatchKeyEvent(Activity.java:2274)
at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchKeyEvent(PhoneWindow.java:1668)
at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1112)
at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1112)
at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1112)
at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1112)
at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1112)
at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1112)
at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchKeyEvent(PhoneWindow.java:1720)
at com.android.internal.policy.impl.PhoneWindow.superDispatchKeyEvent(PhoneWindow.java:1258)
at android.app.Activity.dispatchKeyEvent(Activity.java:2269)
at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchKeyEvent(PhoneWindow.java:1668)
at android.view.ViewRoot.deliverKeyEventPostIme(ViewRoot.java:2851)
at android.view.ViewRoot.handleFinishedEvent(ViewRoot.java:2824)
at android.view.ViewRoot.handleMessage(ViewRoot.java:2011)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:132)
at android.app.ActivityThread.main(ActivityThread.java:4025)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:491)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599)
at dalvik.system.NativeStart.main(Native Method)  

实现用户可以登录的应用程序我有以下情况:如果用户已登录,则执行操作,否则启动结果的登录活动,如果结果是Activity.RESULT_OK,则执行操作.

我的问题是,要执行的操作是显示DialogFragment,但是调用

DialogFragment newFragment = MyDialogFragment.newInstance(mStackLevel);
newFragment.show(ft, "dialog")

在onActivityResult回调中引发异常:

Caused by: java.lang.IllegalStateException:  
Can not perform this action after onSaveInstanceState

那我怎么解决这个问题呢？我正在考虑在那里举起一个标志并在onResume中显示对话框,但我看到这个解决方案有点脏

编辑:添加了更多代码(我按照此示例显示DialogFragment

当用户请求操作时:

... 
if (!user.isLogged()){
 startActivityForResult(new Intent(cnt, Login.class), REQUEST_LOGIN_FOR_COMMENT);
}

在同一个片段中

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (requestCode == REQUEST_LOGIN_FOR_COMMENT && resultCode == Activity.RESULT_OK) {
        FragmentTransaction ft = getFragmentManager().beginTransaction();
        DialogFragment newFragment = MyDialogFragment.newInstance();
        newFragment.show(ft, "dialog")
    }
}

如果用户登录Login活动调用;

setResult(Activity.RESULT_OK);
finish();

我在我的ListFragment中有这个很好的方法我打电话来填写我的其他片段的细节:

private void showClientDetails(int pos) {           
        myCursor.moveToPosition(pos);
        int clientId = myCursor.getInt(0);         
        if(mIsTablet) {

                // Set the list item as checked
                getListView().setItemChecked(mCurrentSelectedItemIndex, true);

                // Get the fragment instance
                ClientDetails details = (ClientDetails) getFragmentManager().findFragmentById(R.id.client_details);
                // Is the current visible recipe the same as the clicked? If so, there is no need to update

                if (details == null || details.getClientIndex() != mCurrentSelectedItemIndex) {
                        // Make new fragment instance to show the recipe
                        details = ClientDetails.newInstance(mCurrentSelectedItemIndex, clientId, mIsTablet);
                        // Replace the old fragment with …