\ n在AlertDialog中不生成换行符

Question

我正在读取从XML文件（通过PullParser）到AlertDialog的字符串。我需要能够在AlertDialog中显示多行文本。正常建议（例如here）是使用\ n来表示换行符。 Another thread说“应该有效”。好吧，它没有。

这是AlertDialog的代码，其中completionString是取自XML的字符串：

public void gameComplete()
{
    AlertDialog alert = new AlertDialog.Builder(this).create();

    myTimer.cancel();
    myTimer = null;

    alert.setMessage(completionString);
    alert.setCancelable(true);
    alert.setCanceledOnTouchOutside(false);
    alert.setButton(AlertDialog.BUTTON_NEUTRAL, "OK", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int which)
        {
            finish();
        }
    });
    alert.show();
}

但这是实际屏幕截图的样子：

我是否在字符串中使用字符串中的一个或两个斜杠（\ n或\\ n），AlertDialog从字面上理解它，只打印那些确切的字符，而不是新行。如何让它显示实际的新行？

如果问题出在pull解析器上，这里是将此字符串从XML文件中提取到completionString变量的代码：

private void parseXml()
{
    // Post1: tuningVars contains the values in the XML tuning file corresponding to the difficulty settings for this particular game.
    // Post2: completion, win, bonus, fail strings are filled out from the endgamestrings.xml file,
    // matching the digit specified by the QR/input code.
    XmlPullParser theParser = Xml.newPullParser();

    try {
        // Post1

        // Specify the XML file to be parsed.
        InputStream theStream = getApplicationContext().getAssets().open("tuning.xml");
        theParser.setInput(theStream, null);

        // Parse!
        int eventType = theParser.getEventType();
        String gameTitle = "";
        String tagName;
        int[] difficultyNums = new int[5];

        while (eventType != XmlPullParser.END_DOCUMENT) {
            if (eventType == XmlPullParser.START_TAG) {
                tagName = theParser.getName();
                Log.i("XML Parser", "Got a tag called " + tagName);

                if (tagName.equals("game")) {
                    gameTitle = theParser.getAttributeValue(null, "title");
                    Log.i("XML Parser", "Found a game title tag " + gameTitle + " and this game is " + extras.getString(GAME_NAME));
                }

                if (gameTitle.equals(extras.getString(GAME_NAME))) {
                    Log.i("XML Parser", "Adding variables for " + gameTitle);

                    while (eventType != XmlPullParser.END_TAG) {
                        String nextTagName = "";

                        if (theParser.getName() != null) {
                            nextTagName = theParser.getName();
                        }
                        Log.i("XML Parser", "Next tag name is" + nextTagName);
                        if (nextTagName.equals("gamevar")) {
                            String varName = theParser.getAttributeValue(null, "varname");
                            difficultyNums[0] = Integer.parseInt(theParser.getAttributeValue(null, "easyval"));
                            difficultyNums[1] = Integer.parseInt(theParser.getAttributeValue(null, "mediumval"));
                            difficultyNums[2] = Integer.parseInt(theParser.getAttributeValue(null, "hardval"));
                            difficultyNums[3] = Integer.parseInt(theParser.getAttributeValue(null, "hackerinc"));
                            difficultyNums[4] = Integer.parseInt(theParser.getAttributeValue(null, "languageinc"));

                            // then construct the Tuning variable and add it to the array
                            TuningVariable varToAdd = new TuningVariable(varName, difficultyNums);
                            tuningVars.add(varToAdd);
                            Log.i("XML Parser", "Added tuning variable " + varName);
                        }

                        eventType = theParser.next();
                    }
                } else {
                    Log.i("XML Parser", "I compared " + extras.getString(GAME_NAME) + " with " + gameTitle + " and decided they were not the same.");
                }
            }
            eventType = theParser.next();
        }

        // Post2

        // Specify the XML file to be parsed.
        theStream = getApplicationContext().getAssets().open("endgamestrings.xml");
        theParser.setInput(theStream, null);

        int chosenDigit = extras.getInt(STRINGS_NUM);

        Log.i("XML Parser", "Running PullParser on endgamestrings.");

        // Parse!
        eventType = theParser.getEventType();
        int stringNum = -1;
        String parsedGameType;
        String selectedGameType;

        // Define which games are accelerators and which puzzles.
        // It would probably make more sense to do this via the XML as well, but let's start here for testing.
        switch (extras.getString((GAME_NAME))) {
            case "Simon":
                selectedGameType = "accelerator";
                break;
            case "Square":
                selectedGameType = "accelerator";
                break;
            case "Pegs":
                selectedGameType = "puzzle";
                break;
            case "Pipes":
                selectedGameType = "puzzle";
                break;
            case "Lights":
                selectedGameType = "puzzle";
        }


        while (eventType != XmlPullParser.END_DOCUMENT)
        {
            // Log.i("XML Parser", "Running PullParser while loop on endgamestrings.");

            if (eventType == XmlPullParser.START_TAG)
            {
                tagName = theParser.getName();
                // Log.i("XML Parser", "Got a tag called " + tagName);

                if (tagName.equals("setofstrings"))
                {
                    stringNum = Integer.parseInt(theParser.getAttributeValue(null, "id"));
                    parsedGameType = theParser.getAttributeValue(null, "type");
                }

                if (stringNum == chosenDigit)
                {
                    /*
                    // Java is whining like a bitch about these variables not being initialized.
                    // Won't bother with this particular error-catching for now.
                    if (parsedGameType.equals("puzzle") && selectedGameType.equals("accelerator"))
                    {
                        String warning = "Warning: Accelerator strings passed to puzzle. Setting strings to default.";
                        Toast toast = Toast.makeText(GameActivity.this, warning, 10);
                        toast.show();
                    }
                    */

                    while (eventType != XmlPullParser.END_TAG)
                    {
                        String nextTagName = "";
                        String stringType = "";

                        if (theParser.getName() != null)
                        {
                            nextTagName = theParser.getName();
                        }

                        if (nextTagName.equals("string"))
                        {
                            stringType = theParser.getAttributeValue(null, "type");
                            Log.i("XML Parser", "Found a string type tag " + stringType);
                        }

                        switch (stringType)
                        {
                            case ("time"):
                                completionString = theParser.nextText();
                                break;
                            case ("bonus"):
                                bonusString = theParser.nextText();
                                break;
                            case ("win"):
                                winString = theParser.nextText();
                                break;
                            case ("fail"):
                                failString = theParser.nextText();
                                break;
                        }

                        eventType = theParser.next();
                    }
                }
            }
            eventType = theParser.next();
        }
    }
    catch (XmlPullParserException e)
    {
        Log.e("XML Parser", "Dude! XmlPullParserException!");
        e.printStackTrace();
    }
    catch (IOException e)
    {
        Log.e("XML Parser", "Dude! IOException!");
        e.printStackTrace();
    }

    return;

}

Answer 1

试试这个：

alert.setMessage(completionString.replace("\\n", "\n"));