Android警报对话框背景问题API 11+

Question

我AlertDialog用下面的代码创建了一个.出于某种原因,我在Honeycomb及以上版本上获得了额外的背景(见图).代码在蜂窝以下的任何地方崩溃都很好. MyCustomDialog仅Theme.Dialog适用于<API-11和Theme.Holo.DialogAPI-11及更高版本.

1. 知道为什么我得到额外的背景吗？
2. 知道为什么它崩溃API <11？如果我删除主题,它工作正常.

更新找到了问题#2的答案.似乎构造函数AlertDialog.Builder(Context context, int theme)是在API 11中引入的.我的修复只是将行更改为:

final AlertDialog.Builder builder = (Integer.parseInt(android.os.Build.VERSION.SDK) < 11)? new AlertDialog.Builder(this) : new AlertDialog.Builder(this,R.style.JumpDialog);

我仍然需要问题#1的帮助

private Dialog setupKeyBoardDialog() {
    if (mContact.getLocaleId() != -1) {
        final AlertDialog.Builder builder = new AlertDialog.Builder(this,R.style.MyCustomDialog);
        builder.setTitle("Keyboards");

        mKeyboardLayouts = new KeyboardLayoutGroup();
        mKeyboardLayouts.layoutNames = new CharSequence[(int) jni.getNumKeyLayouts()];
        mKeyboardLayouts.layoutValue = new ArrayList<Integer>();

        for (int i = 0; i < jni.getNumKeyLayouts(); i++) {
            mKeyboardLayouts.layoutNames[i] = jni.LayoutInfoForIndex(i).getName();
            mKeyboardLayouts.layoutValue.add(i, (int) jni.LayoutInfoForIndex(i).getLocale_id());
        }

        final int selectedItem = mKeyboardLayouts.layoutValue.indexOf(mContact.getLocaleId());

        builder.setSingleChoiceItems(mKeyboardLayouts.layoutNames, selectedItem, new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int item) {
                mContact.setLocaleId(mKeyboardLayouts.layoutValue.get(item));
                mContactsDB.saveContact(mContact, true);

                dialog.dismiss();
                initializeSettingsList();
            }
        });

        final AlertDialog dialog = builder.create();
        dialog.setButton("Cancel", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialogBox, int arg1) {
                dialogBox.cancel();
            }
        });

        return dialog;
    }

    return null;
}

Answer 1

找出答案

1. AlertDialog具有AlertDialog类中每个主题的静态常量,并且不采用标准主题.当我更换R.style.MyTheme或android.R.style.Theme_Holo_Dialog 使用AlertDialog.THEME_HOLO_LIGHT代码工作得很好.

2. 似乎构造函数AlertDialog.Builder(Context context, int theme)是在API 11中引入的.我的修复只是将行更改为:

   final AlertDialog.Builder builder;
   if (Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB) {
       builder = new AlertDialog.Builder(this);
   } else {
       builder = new AlertDialog.Builder(this,R.style.JumpDialog);
   }
   

Answer 2

您可以尝试使用new AlertDialog.Builder(new ContextThemeWrapper(this, R.style.JumpDialog))而不是new AlertDialog.Builder(this, R.style.JumpDialog)