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私はAndroidとJavaを使用した最初のプロジェクトに取り組んでおり、経験はほとんどありません。ラジオプレーヤー（サービスをアクティブにする開始ボタンと停止ボタン）があり、アーティストのタイトルやアルバムなどのxmlファイルのデータがテキストビューに読み込まれます。タイマーを使用して、再生された曲でGUIが更新されるようにします。

これはすべて、歌詞がテキストビューにロードされている場合にのみ機能し、xmlタグの最初の行のみが表示されます<LYRIC>

これが私の主な活動です。

extends  Activity implements OnClickListener{

     private static final String TAG = "ServicesDemo";
     public String myimageURL;
     private EditText Lyrics;
    private ImageView AlbumPic;
    private Button play,  stop;
    private TextView Artist, Song, Album, News, Lyric;
    private UpdateTimeTask m_updateTime;
    private Handler m_handler;
    Parser data;
    /** The delay in milliseconds between updates. */
    private final int DELAY = 20000;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        Artist =(TextView)findViewById(R.id.tvArtist);
        Song  =(TextView)findViewById(R.id.tvSongTitle);
        Album =(TextView)findViewById(R.id.tvAlbum);
        play = (Button) findViewById(R.id.play);
        stop = (Button) findViewById(R.id.stop);
        Lyrics = (EditText) findViewById(R.id.tvLyrics);
        News = (TextView)findViewById(R.id.tvAnouncement);
        AlbumPic = (ImageView) findViewById(R.id.AlbumPic);



        play.setOnClickListener(this);
        stop.setOnClickListener(this);



        m_updateTime = new UpdateTimeTask();

        m_handler = new Handler();
        m_handler.post(m_updateTime);
    }

    private class UpdateTimeTask implements Runnable {
        public void run() {


            try {

                SAXParserFactory saxPF = SAXParserFactory.newInstance();
                SAXParser saxP = saxPF.newSAXParser();
                XMLReader xmlR = saxP.getXMLReader();


                URL url = new URL("http://www.mysite.com/AndroidTest.php"); 
                XMLHandler myXMLHandler = new XMLHandler();
                xmlR.setContentHandler(myXMLHandler);
                xmlR.parse(new InputSource(url.openStream()));

            } catch (Exception e) {
                System.out.println(e);
            }
            data = XMLHandler.data;



            for (int i = 0; i < data.getTitle().size(); i++) {

           Lyrics.setText(data.getLyric().get(i));
                 myimageURL = data.getPic().get(i);

            Song.setText("Title = "+data.getTitle().get(i));


            Artist.setText("Artist = "+data.getArtist().get(i));


            Album.setText("Album = "+data.getAlbum().get(i)); 






 }

 downloadFile(myimageURL );

}

Bitmap bmImg;
void downloadFile(String fileUrl) {
 URL myFileUrl = null;
 try {
    myFileUrl = new URL(fileUrl);
 } catch (MalformedURLException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
 }
 try {
    HttpURLConnection conn = (HttpURLConnection) myFileUrl
          .openConnection();
    conn.setDoInput(true);
    conn.connect();
    InputStream is = conn.getInputStream();

    bmImg = BitmapFactory.decodeStream(is);
    AlbumPic.setImageBitmap(bmImg);
 } catch (IOException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
 }
 m_handler.postDelayed(m_updateTime, DELAY);
 AlbumPic.clearAnimation();
}

}

私のxmlコード 

<?xml version="1.0"?>
<CATALOG>
<CD>
<LYRIC>Stop that train: I'm leavin' - today!
Stop that train: I'm leavin' - anyway!
Stop that train: I'm leavin'. and I said:
It won't be too long whether I'm right or wrong;
I said, it won't be too long whether I'm right or wrong.

All my good life I've been a lonely man,
Teachin' my people who don't understand;
And even though I tried my best,
I still can't find no happiness.

So I got to say:
Stop that train: I'm leavin' - oh, baby now!
Stop that train: I'm leavin' - don't care what you say!
Stop that train: I'm leavin'. and I said:
It won't be too long whether I'm right or wrong;
Said, it won't be too long whether I'm right or wrong.

Some goin' east; and-a some goin' west,
Some stand aside to try their best.
Some livin' big, but the most is livin' small:
They just can't even find no food at all.

I mean, stop it:
Stop that train: I'm leavin' - leavin', mm-hmm.
Stop that train: I'm leavin' - I don't mind!
Stop that train: I'm leavin'. and I said:
It won't be too long whether I'm right or wrong;
I said it won't be too long whether I'm right or wrong.

Stop that train: I'm leavin' - leavin'!
Stop that train: I'm leavin' - can't take it!
Stop that train: I'm leavin' - got to be better!
It won't be too long whether I'm right or wrong;
I said it won't be too long whether I'm right or wrong.</LYRIC>
<ARTIST>Bob Marley</ARTIST>
<TITLE>Stop That Train</TITLE>
<ALBUM>Talkin blues</ALBUM>
<PIC>http://www.mysite.com/Android/Radio/AlbumCovers/Bob-Marley-Talkin-blues.jpg</PIC>
</CD>
</CATALOG>

また、edittextを使用して歌詞を読み込もうとしましたが、<LYRIC>タグの最初の行しか表示されません

誰かがテキストビューにテキスト全体を表示する方法についてアドバイスを与えることができますか

ありがとう

私のxmlhandler

public class XMLHandler extends DefaultHandler {

    String elementValue = null;
    Boolean elementOn = false;
    public static Parser data = null;

    public static Parser getXMLData() {
        return data;
    }

    public static void setXMLData(Parser data) {
        XMLHandler.data = data;
    }

    /** 
     * This will be called when the tags of the XML starts.
     **/
    @Override
    public void startElement(String uri, String localName, String qName,
            Attributes attributes) throws SAXException {

        elementOn = true;

        if (localName.equals("CATALOG"))
        {
            data = new Parser();
        } else if (localName.equals("CD")) {
            /** 
             * We can get the values of attributes for eg. if the CD tag had an attribute( <CD attr= "band">Akon</CD> ) 
             * we can get the value "band". Below is an example of how to achieve this.
             * 
             * String attributeValue = attributes.getValue("attr");
             * data.setAttribute(attributeValue);
             * 
             * */
        }
    }

    /** 
     * This will be called when the tags of the XML end.
     **/
    @Override
    public void endElement(String uri, String localName, String qName)
            throws SAXException {

        elementOn = false;

        /** 
         * Sets the values after retrieving the values from the XML tags
         * */ 
        if (localName.equalsIgnoreCase("title"))
            data.setTitle(elementValue);
        else if (localName.equalsIgnoreCase("artist"))
            data.setArtist(elementValue);
        else if (localName.equalsIgnoreCase("album"))
            data.setAlbum(elementValue);
        else if (localName.equalsIgnoreCase("lyric"))
            data.setLyric(elementValue);
        else if (localName.equalsIgnoreCase("pic"))
            data.setPic(elementValue);


    }

    /** 
     * This is called to get the tags value
     **/
    @Override
    public void characters(char[] ch, int start, int length)
            throws SAXException {

        if (elementOn) {
            elementValue = new String(ch, start, length);
            elementOn = false;
        }

    }

    public void post(Runnable mUpdate) {
        // TODO Auto-generated method stub

    }

    public void removeCallbacks(Runnable sendUpdatesToUI) {
        // TODO Auto-generated method stub

    }

    public void postDelayed(Runnable runnable, int i) {
        // TODO Auto-generated method stub

    }

}
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1 に答える 1

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XMLHandlerオブジェクトを確認することをお勧めします。何かおかしいのではないかと思います。

あなたが私たちにあなたを助けるのに良いあなたのXMLHandlerクラスを見せてくれるなら。

編集：

ハンドラーにいくつか変更を加えました。要素の値を読み取るときに問題が発生する可能性があると思います。代わりにCharArrayWriterを使用してください（私はそれと同じ問題を解決しました）。そして、私はあなたも「elementOn」を必要としないと思います。不要な変数の場合は、使用しないでください。XMLレイアウトで複数のTextViewが定義されていることを確認してください。それがうまくいくことを願っています:-)

public class XMLHandler extends DefaultHandler {

    private static final String TAG = "XMLHandler";
    private String elementValue = null;
    public static Parser data = null;

    /** The contents. */
    private CharArrayWriter contents = new CharArrayWriter();

    public static Parser getXMLData() {
        return data;
    }

    public static void setXMLData(Parser data) {
        XMLHandler.data = data;
    }

    /** 
     * This will be called when the tags of the XML starts.
     **/
    @Override
    public void startElement(String uri, String localName, String qName,
            Attributes attributes) throws SAXException {

        /**It´s a good practice to reset the CharArrayWriter when you start any element.*/
        contents.reset();

        if (localName.equals("CATALOG"))
        {
            data = new Parser();
        } else if (localName.equals("CD")) {
            /** 
             * We can get the values of attributes for eg. if the CD tag had an attribute( <CD attr= "band">Akon</CD> ) 
             * we can get the value "band". Below is an example of how to achieve this.
             * 
             * String attributeValue = attributes.getValue("attr");
             * data.setAttribute(attributeValue);
             * 
             * */
        }
    }

    /** 
     * This will be called when the tags of the XML end.
     **/
    @Override
    public void endElement(String uri, String localName, String qName)
            throws SAXException {
        /** 
         * Sets the values after retrieving the values from the XML tags
         * */ 
         String elementValue = contents.toString().trim();

        if (localName.equalsIgnoreCase("title"))
            data.setTitle(elementValue);
        else if (localName.equalsIgnoreCase("artist"))
            data.setArtist(elementValue);
        else if (localName.equalsIgnoreCase("album"))
            data.setAlbum(elementValue);
        else if (localName.equalsIgnoreCase("lyric"))
            data.setLyric(elementValue);
        else if (localName.equalsIgnoreCase("pic"))
            data.setPic(elementValue);
    }

    /** 
     * This is called to get the tags value
     **/
    @Override
    public void characters(char[] ch, int start, int length) throws SAXException {
            contents.write(ch, start, length);
    }

    @Override
    public void endDocument() throws SAXException {
        Log.i(TAG, "Catalog parse finalized with success.");
    }
}
于 2012-07-05T22:21:32.063 に答える