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嗨，我想顯示圖像從網址（使用jsoup）在網格視圖中獲取。它設法檢索我要加載的圖像數量，但不顯示實際圖像本身。實際圖像不音符無法顯示圖像從網格在網格視圖
這是截圖：
這是代碼爲我取得的網址和顯示它，我用「懶人圖庫」：
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.gallery);
this.setRequestedOrientation(
ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
Button refresh = (Button)findViewById(R.id.btn_refresh);
refresh.setOnClickListener(this);
ImageButton home = (ImageButton)findViewById(R.id.btn_home);
home.setOnClickListener(this);
// Loading products in Background Thread
new LoadThumbnails().execute();
//Getting adapter and parse in results
list=(GridView)findViewById(R.id.list);
adapter=new LazyAdapter(this, htmlList);
list.setAdapter(adapter);
// Click event for single list row
list.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
Intent intent = new Intent();
intent.setClassName("com.scba", "com.scba.gallery.EnlargedImage");
intent.putExtra("item", actualImage);
startActivityForResult(intent, GET_INTENT_CODE);
}
});
}
/**
* Background Async Task to Load all product by making HTTP Request
* */
class LoadThumbnails extends AsyncTask<String, String, String> {
/**
* Before starting background thread Show Progress Dialog
* */
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(PhotoGallery.this);
pDialog.setMessage("Loading" + "\n" + "Please wait...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(false);
pDialog.show();
}
/**
* getting All products from url
* */
protected String doInBackground(String... args) {
try {
Document doc = Jsoup.connect("http://www.s-cba.org.sg/events/2011/photo111001_en.shtml").get();
//Elements trs = doc.select("td.text tr td");
//remove header row
/* for (int i = 0; i < 43; i++)
{
Element link = doc.select("td.text tr td a").get(i);
String relHref = link.attr("href");
//System.out.println("Blog: " + relHref);
} */
for (int c = 0; c < 43; c++)
{
Element link = doc.select("td.text tr td a img").get(c);
String url = link.absUrl("src");
System.out.println("Blog: " + url);
HashMap<String, String> map = new HashMap<String, String>();
// adding each child node to HashMap key => value
map.put("photo",url);
// adding HashList to ArrayList
htmlList.add(map);
//System.out.println(htmlList);
}
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
/**
* After completing background task Dismiss the progress dialog
* **/
protected void onPostExecute(String file_url) {
// dismiss the dialog after getting all products
pDialog.dismiss();
adapter.notifyDataSetChanged();
}
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if (v.getId() == R.id.btn_refresh)
{
photosList.clear();
// Loading products in Background Thread
new LoadThumbnails().execute();
}
else if(v.getId() == R.id.btn_home)
{
Intent intent = new Intent();
intent.setClassName("com.scba", "com.scba.Menu");
finish();
}
}
}
這是logcat的輸出：
11-29 02:39:13.991: D/dalvikvm(167): GC_CONCURRENT freed 384K, 6% free 9533K/10119K, paused 20ms+5ms
11-29 02:39:16.392: I/ActivityManager(91): START {cmp=com.scba/.admin.Settings} from pid 777
11-29 02:39:16.400: W/WindowManager(91): Failure taking screenshot for (180x300) to layer 21010
11-29 02:39:16.500: V/PhoneStatusBar(143): setLightsOn(true)
11-29 02:39:16.631: I/ActivityManager(91): Displayed com.scba/.admin.Settings: +214ms
11-29 02:39:21.730: W/WindowManager(91): Failure taking screenshot for (180x300) to layer 21015
11-29 02:39:21.780: V/PhoneStatusBar(143): setLightsOn(true)
11-29 02:39:24.169: I/ActivityManager(91): START {cmp=com.scba/.gallery.PhotoGallery} from pid 777
11-29 02:39:24.189: W/WindowManager(91): Failure taking screenshot for (180x300) to layer 21010
11-29 02:39:24.319: V/PhoneStatusBar(143): setLightsOn(true)
11-29 02:39:24.719: I/Process(91): Sending signal. PID: 777 SIG: 3
11-29 02:39:24.719: I/dalvikvm(777): threadid=3: reacting to signal 3
11-29 02:39:24.949: I/dalvikvm(777): Wrote stack traces to '/data/anr/traces.txt'
11-29 02:39:25.119: D/dalvikvm(777): GC_FOR_ALLOC freed 1225K, 15% free 11137K/13063K, paused 98ms
11-29 02:39:25.209: I/ActivityManager(91): Displayed com.scba/.gallery.PhotoGallery: +1s9ms
11-29 02:39:26.569: D/dalvikvm(777): GC_CONCURRENT freed 781K, 17% free 10941K/13063K, paused 20ms+22ms
11-29 02:39:27.449: D/dalvikvm(777): GC_CONCURRENT freed 408K, 15% free 11106K/13063K, paused 21ms+9ms
11-29 02:39:27.769: I/dalvikvm(777): Total arena pages for JIT: 12
11-29 02:39:28.519: D/dalvikvm(777): GC_CONCURRENT freed 474K, 15% free 11226K/13063K, paused 21ms+53ms
11-29 02:39:28.639: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_7278_s.jpg
11-29 02:39:28.659: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_7300_s.jpg
11-29 02:39:28.709: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_7302_s.jpg
11-29 02:39:28.729: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_7326_s.jpg
11-29 02:39:28.739: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_7335_s.jpg
11-29 02:39:28.759: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_7363_s.jpg
11-29 02:39:28.809: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_7400_s.jpg
11-29 02:39:28.829: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_7411_s.jpg
11-29 02:39:28.839: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_7418_s.jpg
11-29 02:39:28.859: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_7424_s.jpg
11-29 02:39:28.869: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_7610_s.jpg
11-29 02:39:28.919: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_7647_s.jpg
11-29 02:39:28.941: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_7657_s.jpg
11-29 02:39:28.959: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_7672_s.jpg
11-29 02:39:28.969: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_7734_s.jpg
11-29 02:39:29.039: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_7767_s.jpg
11-29 02:39:29.059: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_7816_s.jpg
11-29 02:39:29.069: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_8219_s.jpg
11-29 02:39:29.150: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_8235_s.jpg
11-29 02:39:29.159: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_8243_s.jpg
11-29 02:39:29.209: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_8259_s.jpg
11-29 02:39:29.229: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_8327_s.jpg
11-29 02:39:29.239: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_8356_s.jpg
11-29 02:39:29.259: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_8375_s.jpg
11-29 02:39:29.269: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_8399_s.jpg
11-29 02:39:29.320: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_8401_s.jpg
11-29 02:39:29.349: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_8417_s.jpg
11-29 02:39:29.359: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_8419_s.jpg
11-29 02:39:29.379: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_8448_s.jpg
11-29 02:39:29.429: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_8469_s.jpg
11-29 02:39:29.469: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_8470_s.jpg
11-29 02:39:29.480: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_8527_s.jpg
11-29 02:39:29.529: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_8562_s.jpg
11-29 02:39:29.549: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_8594_s.jpg
11-29 02:39:29.589: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_8664_s.jpg
11-29 02:39:29.639: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_8688_s.jpg
11-29 02:39:29.659: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_8722_s.jpg
11-29 02:39:29.680: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_8752_s.jpg
11-29 02:39:29.689: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_8763_s.jpg
11-29 02:39:29.730: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_8869_s.jpg
11-29 02:39:29.759: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_8896_s.jpg
11-29 02:39:29.789: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/DSC_8939_s.jpg
11-29 02:39:29.799: I/System.out(777): Blog: http://www.s-cba.org.sg/events/2011/111001/IMG_5276_s.jpg