应用程序显示DialogFragment在轮换后崩溃

时间：2017-02-05 19:47:17

标签： java android illegalstateexception

当我在显示DialogFragment时旋转设备时，我的应用程序崩溃了：

E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.myapp, PID: 27909
java.lang.RuntimeException: Unable to destroy activity {com.myapp/com.myapp.FileListActivity}: java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState
    at android.app.ActivityThread.performDestroyActivity(ActivityThread.java:4203)
    at android.app.ActivityThread.handleDestroyActivity(ActivityThread.java:4221)
    at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:4495)
    at android.app.ActivityThread.-wrap19(ActivityThread.java)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1483)
    at android.os.Handler.dispatchMessage(Handler.java:102)
    at android.os.Looper.loop(Looper.java:154)
    at android.app.ActivityThread.main(ActivityThread.java:6126)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
    Caused by: java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState
    at android.support.v4.app.FragmentManagerImpl.checkStateLoss(FragmentManager.java:1493)
    at android.support.v4.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:1511)
    at android.support.v4.app.BackStackRecord.commitInternal(BackStackRecord.java:638)
    at android.support.v4.app.BackStackRecord.commit(BackStackRecord.java:617)
    at android.support.v4.app.DialogFragment.dismissInternal(DialogFragment.java:201)
    at android.support.v4.app.DialogFragment.dismiss(DialogFragment.java:167)
    at com.myapp.ActionsDialogFragment.onDestroy(ActionsDialogFragment.java:127)
    at android.support.v4.app.Fragment.performDestroy(Fragment.java:2202)
    at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1196)
    at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1252)
    at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1234)
    at android.support.v4.app.FragmentManagerImpl.dispatchDestroy(FragmentManager.java:2083)
    at android.support.v4.app.FragmentController.dispatchDestroy(FragmentController.java:244)
    at android.support.v4.app.FragmentActivity.onDestroy(FragmentActivity.java:368)
    at android.support.v7.app.AppCompatActivity.onDestroy(AppCompatActivity.java:203)
    at com.myapp.FileListActivity.onDestroy(FileListActivity.java:1106)
    at android.app.Activity.performDestroy(Activity.java:6881)
    at android.app.Instrumentation.callActivityOnDestroy(Instrumentation.java:1154)
    at android.app.ActivityThread.performDestroyActivity(ActivityThread.java:4190)
    at android.app.ActivityThread.handleDestroyActivity(ActivityThread.java:4221) 
    at android.app.ActivityThread.handleRelaunchActivity(ActivityThread.java:4495) 
    at android.app.ActivityThread.-wrap19(ActivityThread.java) 
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1483) 
    at android.os.Handler.dispatchMessage(Handler.java:102) 
    at android.os.Looper.loop(Looper.java:154) 
    at android.app.ActivityThread.main(ActivityThread.java:6126) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776) 

那是我的DialogFragment：

public class ActionsDialogFragment extends DialogFragment {

    public interface ActionsDialogListener {
        void onActionSelected(DialogFragment dialog, int position);
    }

    AlertDialog dialog;
    ActionsDialogListener mListener;

    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);
        try {
            mListener = (ActionsDialogListener) activity;
        } catch (ClassCastException e) {
            throw new ClassCastException(activity.toString()
                    + " must implement ActionsDialogListener");
        }
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
        dialog = builder.create();
        return dialog;
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                            Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.actions_dialog, container, false);

        CustomListAdapter cla;
        cla = new CustomListAdapter(getActivity());
        ListView list = (ListView) view.findViewById(R.id.listViewActions);
        final AlertDialog finalDialog = dialog;
        list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                mListener.onActionSelected((DialogFragment) getParentFragment(), position);
                Log.d(FileListActivity.TAG, "Dismissing dialog");
//                ActionsDialogFragment.this.dismiss();
                finalDialog.dismiss();
            }
        });
        list.setAdapter(cla);
        dialog.setView(view);
        return view;
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        Log.d(FileListActivity.TAG, "ActionDialogFragment onDestroy()");
        dismiss();
//        dialog.dismiss();
    }

    class CustomListAdapter extends ArrayAdapter<String> {
    ...
    }

}

错误说＆＃34;在onSaveInstanceState＆＃34;之后无法执行此操作。但我不知道InstanceState的保存位置。对我来说，可以在旋转后关闭对话框并重新创建它。

知道出了什么问题吗？

编辑：

我的DialogFragment在主要活动中创建：

void showActionsDialog() {
    actionsDialog = new ActionsDialogFragment();
    actionsDialog.show(getSupportFragmentManager(), "ActionsDialogFragment");
}

编辑2：

以防万一它很重要。这是我的主要活动onDestroy()方法：

public void onDestroy() {
    super.onDestroy();
    Log.d(TAG, "FileListActivity onDestroy()");
    if (exifReadingDialog != null) { exifReadingDialog.dismiss(); }
    dataFragment.mRetainedCache = mMemoryCache;
    dataFragment.setData(mediaFolder);
}

编辑3：

其他一些想法：stackoverflow的很多人都说你应该在onCreateDialog中使用onCreateView或DialogFragment。也许这就是我的问题。但是，如果我删除onCreateDialog和dialog变量，则解雇不再有效。到目前为止，我使用此解决方案： Cannot get DialogFragment to dismiss programatically（仅用于解除对话框，但在轮换时崩溃）

3 个答案:

答案 0 :(得分：1)

我认为问题是onDestroy在父活动上调用Fragment事务提交，并且在onSavedInstance被调用并且在onDestroy之前完成之后无法完成。你真的需要解雇onDestroy（）??

答案 1 :(得分：1)

您获得泄漏窗口异常，因为在您的活动被销毁时function MakeVer(Major, Minor, Build: Cardinal): Cardinal; begin Result := (Major shl 24) + (Minor shl 16) + Build; end; function InitializeSetup(): Boolean; var WindowsVersion: Cardinal; begin Result := True; WindowsVersion := GetWindowsVersion; Log(Format('Windows Version: %x', [WindowsVersion])); if (WindowsVersion < MakeVer(6, 1, 7601)) or ((WindowsVersion >= MakeVer(6, 2, 0)) and (WindowsVersion < MakeVer(6, 3, 0))) then begin MsgBox(SetupMessage(msgWindowsVersionNotSupported), mbError, MB_OK); Result := False; end; end; 正在运行。你应该在活动被销毁时解雇对话

试试这个：

Alert dialog

同样在@Override protected void onDestroy() { try { if (dialog!= null && dialog.isShowing()) { dialog.dismiss(); } } catch (Exception e) { e.printStackTrace(); } super.onDestroy(); } 首先解除对话

setOnItemClickListener

答案 2 :(得分：0)

与此同时，我尝试过很多东西。我将ActionsDialogFragment更改为更像this tutorial。

但我认为真正的错误出现在我的自定义ListAdapter中。我改变了这部分

public @NonNull View getView(int position, View view, @NonNull ViewGroup parent) {
    LayoutInflater inflater = getLayoutInflater(null);

到

public @NonNull View getView(int position, View view, @NonNull ViewGroup parent) {
    LayoutInflater inflater = ((Activity)context).getLayoutInflater();

现在我可以通过一个简单的DialogFragment来解除dismiss();，并且该应用在轮播后不会再崩溃。

所以我应该在我的问题中发布完整的课程。无论如何，谢谢你的帮助！

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