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我的列表视图是从在线资源解析的，但我无法让列表视图将图像 src 传递给单个列表项

SingleMenuItemActivity

static final String KEY_SONG = "song";
static final String KEY_ARTIST = "artist";
static final String KEY_THUMB_URL = "thumb_url";
static final String KEY_DURATION = "duration";
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.libraryonclick);

    // getting intent data
    Intent in = getIntent();

    // Get XML values from previous intent
    String song = in.getStringExtra(KEY_SONG);
    String artist = in.getStringExtra(KEY_ARTIST);
    String thumb_url = in.getStringExtra(KEY_THUMB_URL);
    String duration = in.getStringExtra(KEY_DURATION);


    // Displaying all values on the screen
    TextView lblSong = (TextView) findViewById(R.id.textView1);
    TextView lblArtist = (TextView) findViewById(R.id.textView2);
    Drawable imgThumb = ((ImageView)findViewById(R.id.onclickthumb)).getDrawable(); //   thumb image
    TextView lblDuration = (TextView) findViewById(R.id.textView3);

    Button link3Btn = (Button)findViewById( R.id.button1 );
    link3Btn.setOnClickListener( new View.OnClickListener()
    {
        public void onClick(View v)
        {
            Uri uri = Uri.parse("http://google.com");
            startActivity( new Intent( Intent.ACTION_VIEW, uri ) );
        }
    });

    lblSong.setText(song);
    lblArtist.setText(artist);
    lblDuration.setText(duration);
    imgThumb.setImageResource(thumb_url);

    //Maybe more code here?
}

列表视图活动

public class CustomizedListView extends Activity {
// All static variables
static final String URL = "http://dl.dropbox.com/u/48258247/music.xml";
// XML node keys
static final String KEY_SONG = "song"; // parent node
static final String KEY_ID = "id";
static final String KEY_TITLE = "title";
static final String KEY_ARTIST = "artist";
static final String KEY_DURATION = "duration";
static final String KEY_THUMB_URL = "thumb_url";

ListView list;
LazyAdapter adapter;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.library);


    ArrayList<HashMap<String, String>> songsList = new ArrayList<HashMap<String, String>>();

    XMLParser parser = new XMLParser();
    String xml = parser.getXmlFromUrl(URL); // getting XML from URL
    Document doc = parser.getDomElement(xml); // getting DOM element

    NodeList nl = doc.getElementsByTagName(KEY_SONG);
    // looping through all song nodes <song>
    for (int i = 0; i < nl.getLength(); i++) {
        // creating new HashMap
        HashMap<String, String> map = new HashMap<String, String>();
        Element e = (Element) nl.item(i);
        // adding each child node to HashMap key => value
        map.put(KEY_ID, parser.getValue(e, KEY_ID));
        map.put(KEY_TITLE, parser.getValue(e, KEY_TITLE));
        map.put(KEY_ARTIST, parser.getValue(e, KEY_ARTIST));
        map.put(KEY_DURATION, parser.getValue(e, KEY_DURATION));
        map.put(KEY_THUMB_URL, parser.getValue(e, KEY_THUMB_URL));

        // adding HashList to ArrayList
        songsList.add(map);
    }


    list=(ListView)findViewById(R.id.list);

    // Getting adapter by passing xml data ArrayList
    adapter=new LazyAdapter(this, songsList);        
    list.setAdapter(adapter);


    // Click event for single list row


    list.setOnItemClickListener(new OnItemClickListener() {

        public void onItemClick(AdapterView<?> parent, View view,
                int position, long id) {
            // getting values from selected ListItem
            String song = ((TextView) view.findViewById(R.id.title)).getText().toString();
            String artist = ((TextView) view.findViewById(R.id.artist)).getText().toString();
            String thumb_url = ((TextView) view.findViewById(R.id.list_image)).getText().toString();
            String duration = ((TextView) view.findViewById(R.id.duration)).getText().toString();

            // Starting new intent
            Intent in = new Intent(CustomizedListView.this, org.scouts.library.SingleMenuItem.class);
            in.putExtra(KEY_SONG, song);
            in.putExtra(KEY_ARTIST, artist);
            in.putExtra(KEY_THUMB_URL, thumb_url);
            in.putExtra(KEY_DURATION, duration);
            startActivity(in);

        }
    });     
}

我想我可能需要通过 imageloader 类来解析

4

1 回答 1

1

你可以简单地试试这个 -

URL url = new URL("http://image10.bizrate-images.com/resize?sq=60&uid=2216744464");
Bitmap bmp = BitmapFactory.decodeStream(url.openConnection().getInputStream());
imageView.setImageBitmap(bmp);

ImageView在您的CustomizedListView类和方法中创建一个oncreate()通过意图从调用文件接收 url 路径。并将其粘贴到下面的代码中并尝试一下。

而且，看看这个例子

于 2012-07-02T09:30:41.347 回答