使用httpclient从链接获取所有图像URL

Question

我已经指定了位图的URL来使用httpclient连接下载图像。但是我必须这样做 从网站“http://postimg.org/gallery/5y7ulm9o/b2f8235e/”获取所有网址，其中包含n个图像，我必须获取图像的所有网址，并且必须将其存储在字符串数组中。我不知道怎么做Plz的帮助......

 package de.vogella.android.bitmap.httpdownload.simple;

    import java.io.IOException;

    import org.apache.http.HttpEntity;
    import org.apache.http.HttpResponse;
    import org.apache.http.StatusLine;
    import org.apache.http.client.HttpClient;
    import org.apache.http.client.methods.HttpGet;
    import org.apache.http.client.methods.HttpUriRequest;
    import org.apache.http.impl.client.DefaultHttpClient;
    import org.apache.http.util.EntityUtils;

    import android.app.Activity;
    import android.app.ProgressDialog;
    import android.graphics.Bitmap;
    import android.graphics.BitmapFactory;
    import android.os.Bundle;
    import android.view.View;
    import android.widget.ImageView;

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

        }

        public void downloadPicture(View view) {
            final ProgressDialog dialog = ProgressDialog.show(this, "Download",
                    "downloading");
            dialog.show();
            new Thread(new Runnable() {
                @Override
                public void run() {
                    try {
                        final Bitmap downloadBitmap = downloadBitmap("http://postimg.org/image/iwcmlxf17");
                        final ImageView imageView = (ImageView) findViewById(R.id.imageView1);
                        runOnUiThread(new Runnable() {
                            @Override
                            public void run() {
                                imageView.setImageBitmap(downloadBitmap);
                            }
                        });

                    } catch (IOException e) {
                        e.printStackTrace();
                    } finally {
                        dialog.dismiss();
                    }
                }
            }).start();

        }

        private Bitmap downloadBitmap(String url) throws IOException {
            HttpUriRequest request = new HttpGet(url.toString());
            HttpClient httpClient = new DefaultHttpClient();
            HttpResponse response = httpClient.execute(request);

            StatusLine statusLine = response.getStatusLine();
            int statusCode = statusLine.getStatusCode();
            if (statusCode == 200) {
                HttpEntity entity = response.getEntity();
                byte[] bytes = EntityUtils.toByteArray(entity);

                Bitmap bitmap = BitmapFactory.decodeByteArray(bytes, 0,
                        bytes.length);
                return bitmap;
            } else {
                throw new IOException("Download failed, HTTP response code "
                        + statusCode + " - " + statusLine.getReasonPhrase());
            }
        }
}