在我的应用程序中，我有一个自定义 AlertDialog(由系统使用 showDialog() 处理)，其中包含一个带有 2 个选项卡的 tabhost。在其中一个选项卡中有一个微调器。只要未打开微调器(显示微调器对话框)，我就可以毫无问题地旋转屏幕。如果微调器在旋转过程中打开，我会得到:

FATAL EXCEPTION: main
java.lang.IllegalArgumentException: View not attached to window manager
    at android.view.WindowManagerImpl.findViewLocked(WindowManagerImpl.java:355)
    at android.view.WindowManagerImpl.removeView(WindowManagerImpl.java:200)
    at android.view.Window$LocalWindowManager.removeView(Window.java:432)
    at android.app.Dialog.dismissDialog(Dialog.java:278)
    at android.app.Dialog.access$000(Dialog.java:71)
    at android.app.Dialog$1.run(Dialog.java:111)
    at android.app.Dialog.dismiss(Dialog.java:268)
    at android.widget.Spinner.onDetachedFromWindow(Spinner.java:89)
    at android.view.View.dispatchDetachedFromWindow(View.java:6173)
    at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:1164)
    at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:1162)
    at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:1162)
    at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:1162)
    at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:1162)
    at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:1162)
    at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:1162)
    at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:1162)
    at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:1162)
    at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:1162)
    at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:1162)
    at android.view.ViewGroup.dispatchDetachedFromWindow(ViewGroup.java:1162)
    at android.view.ViewRoot.dispatchDetachedFromWindow(ViewRoot.java:1746)
    at android.view.ViewRoot.doDie(ViewRoot.java:2757)
    at android.view.ViewRoot.handleMessage(ViewRoot.java:1995)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:130)
    at android.app.ActivityThread.main(ActivityThread.java:3683)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:507)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
    at dalvik.system.NativeStart.main(Native Method)

所以...

1 - 是否可以在 onPause() 期间以编程方式关闭微调器？

2 - 我应该使用其他方法吗？

3 - 如果没有合适的解决方案，我该如何捕获这个特定的异常？ (我知道不好的做法，但崩溃需要停止，并且由于 Activity 在被销毁后会正确地 self 重建，所以无论如何都没有关系。

...为了所有神圣的爱，请不要建议我将 android:configChanges="orientation" 添加到我的 Activity 声明中。令我惊讶的是，它经常被接受为解决方向问题的官方解决方案。

编辑更多信息

这是我的对话框创建代码供引用:

static final int ID_DIALOG_CHOOSER = 1;
int pref_location;
private Dialog dialog;

...

protected Dialog onCreateDialog(int id)
{
    switch(id)
    {
    case ID_DIALOG_CHOOSER:
        dialog = show(ID_DIALOG_CHOOSER);
        break;
    }
    return dialog;
}

...

showDialog(DialogView.ID_DIALOG_CHOOSER);

...

Dialog show(final int dialogType) 
{
    if (dialogType == ID_DIALOG_CHOOSER)
    {
        AlertDialog.Builder builder = new AlertDialog.Builder(this);

        // inflate tabhost layout
        View tabHostLayout = (View) inflater.inflate(R.layout.tabhost_layout, null);
        FrameLayout tabContent = (FrameLayout) tabHostLayout.findViewById(android.R.id.tabcontent);

        // inflate tab content layouts and add to tabhost layout
        LinearLayout tab1 = (LinearLayout) inflater.inflate(R.layout.dialog_tab1, null);
        tabContent.addView(tab1);
        LinearLayout tab2 = (LinearLayout) inflater.inflate(R.layout.dialog_tab2, null);
        tabContent.addView(tab2);

        // tab setup
        TabHost tabHost = (TabHost) tabHostLayout.findViewById(R.id.TabHost_Dialog_Tabs);
        tabHost.setup();

        TabHost.TabSpec tab_1 = tabHost.newTabSpec("Category 1");
        tab_1.setContent(R.id.LinearLayout_Dialog_Tab1_Content);
        tab_1.setIndicator(this.getResources().getString(R.string.dialog_tab1), this.getResources().getDrawable(R.drawable.tabhost_icon_selector));
        tabHost.addTab(tab_1);

        TabHost.TabSpec tab_2 = tabHost.newTabSpec("Category 2");
        tab_2.setContent(R.id.LinearLayout_Dialog_Tab2_Content);
        tab_2.setIndicator(this.getResources().getString(R.string.dialog_tab2), this.getResources().getDrawable(R.drawable.tabhost_icon_selector));
        tabHost.addTab(tab_2);

        // spinner setup
        final Spinner spinner_location = (Spinner) tab1.findViewById(R.id.Spinner_Dialog_Location);
        String[] locationArrayVals = null;
        ArrayAdapter<CharSequence> adapter_location = null;
        locationArrayVals = this.getResources().getStringArray(R.array.location_array_vals);
        adapter_location = ArrayAdapter.createFromResource(this, R.array.location_array_listdisplay, android.R.layout.simple_spinner_item);
        adapter_location.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        spinner_location.setAdapter(adapter_location);

        // ok button
        Button button_ok = (Button) tab1.findViewById(R.id.Button_Dialog_OK);
        button_ok.setOnClickListener(new View.OnClickListener() 
        {
            public void onClick(View view) 
            {
                pref_location = spinner_location.getSelectedItemPosition();
                dialog.dismiss();
            }
        });

        // create dialog
        builder.setTitle("Location")
        .setView(tabHost)
        .setCancelable(true);
        dialog = builder.create();
    }
    return dialog;
}

使用临时解决方法进行编辑

对于任何感兴趣的人，我至少设法通过继承微调器并覆盖 onDetachedFromWindow() 来阻止崩溃，如下所示:

public static class CatchingSpinner extends Spinner
{
    public CatchingSpinner(Context context, AttributeSet attrs) 
    {
        super(context, attrs);
    }

    @Override
    protected void onDetachedFromWindow()
    {
        try
        {
            super.onDetachedFromWindow();
        }
        catch (IllegalArgumentException e)
        {
            // do whatever
        }
    } 
}

就像我说的，一个解决方法。仍在研究解决方案。 :/

最佳答案

我找到了更好的解决方案。用外观和行为都像 Spinner 的按钮替换 Spinner 实际上并不难(幸运的是，崩溃除外)。

<Button 
     android:background="@android:drawable/btn_dropdown" 
     android:gravity="left|center_vertical"
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" />

public void showSpinner() {
    AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
    builder.setTitle(_spinnerPrompt);
    builder.setSingleChoiceItems(_spinnerOptions, _spinnerSelection,
      new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int item) {
            _spinnerSelection = item;
            _pseudoSpinner.setText(_spinnerOptions[item]);
            _restoreSpinnerOnRestart = false;
            dialog.dismiss();
        }
    });
    builder.setOnCancelListener(new DialogInterface.OnCancelListener() {
        @Override
        public void onCancel(DialogInterface dialog) {
            _restoreSpinnerOnRestart = false;
        }
    });
    AlertDialog alert = builder.create();
    _restoreSpinnerOnRestart = true;
    alert.show();
    }

@Override
public Bundle onSaveInstanceState() {
    Bundle state = super.onSaveInstanceState();
    state.putBoolean(STATE_SPINNER_RESTORE, _restoreSpinnerOnRestart);
    state.putInt(STATE_SPINNER_SELECTION, _spinnerSelection);
    return state;
};

@Override
public void onRestoreInstanceState(Bundle savedInstanceState) {
    super.onRestoreInstanceState(savedInstanceState);
    _spinnerSelection = savedInstanceState.getInt(STATE_SPINNER_SELECTION, -1);
    _restoreSpinnerOnRestart = savedInstanceState.getBoolean(STATE_SPINNER_RESTORE);
    _pseudoSpinner.setText(_spinnerOptions[_spinnerSelection]);

    if (_restoreSpinnerOnRestart) {
        showSpinner();
    }
};

关于java - 当自定义警报对话框有一个打开的微调器时，处理方向变化的正确方法是什么？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/6906513/