大家好,我正在尝试显示我从包含名称、图像和内容(textview、imageview 和 textview)的 JSON 字符串中获取的数据。我能够从 JSON 中获取数据,但我无法显示它,甚至我的 Logcat 也没有出现任何错误。
我正在尝试的代码是
try {
bookDetails = json.getJSONArray(TAG_DETAILS);
for (int i = 0; i < bookDetails.length(); i++)
{
JSONObject c = bookDetails.getJSONObject(i);
String image1 = c.getString(TAG_IMAGE1);
String image2=c.getString(TAG_IMAGE2);
String Bid = c.getString(TAG_ID);
String Bname = c.getString(TAG_NAME);
String Bdesc= c.getString(TAG_DESCRIPTION);
String BbookId=c.getString(TAG_BOOKID);
HashMap<String, String> map = new HashMap<String, String>();
map.put(TAG_IMAGE1, image1);
map.put(TAG_IMAGE2, image2);
map.put(TAG_ID,Bid);
map.put(TAG_NAME,Bname);
map.put(TAG_DESCRIPTION,Bdesc);
map.put(TAG_BOOKID,BbookId);
booksList.add(map);
String[] captionArray = (String[]) ((List<NameValuePair>) map).toArray(new String[map.size()]);
ItemsAdapter itemsAdapter=new ItemsAdapter(DetailsActivity.this, R.layout.details,booksList);
setListAdapter(itemsAdapter);
}
} catch (JSONException e)
{
e.printStackTrace();
}
return null;
}
我的适配器是
private class ItemsAdapter extends BaseAdapter implements ListAdapter
{
String[] items;
public ItemsAdapter(DetailsActivity detailsActivity,
int details, ArrayList<HashMap<String, String>> booksList) {
// TODO Auto-generated constructor stub
this.items = items;
}
public View getView( int POSITION, View convertView,ViewGroup parent)
{
TextView cap = null ;
View view = convertView;
ImageView img = null;
if (view == null)
{
LayoutInflater vi = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = vi.inflate(R.layout.details, null);
}
img = (ImageView) view.findViewById(R.id.smallImage);
Log.i("sss","sss");
cap = (TextView) view.findViewById(R.id.caption);
cap.setText(mapName.get(POSITION));
img.setImageBitmap(BitmapFactory.decodeByteArray(map.get(POSITION), 0, map.get(POSITION).length));
return view;
}
public int getCount()
{
return items.length;
}
public Object getItem(int position)
{
return position;
}
public long getItemId(int position)
{
return position;
}
}
我的 JSON 字符串是
{
"bookdetails": [
{
"bid": "2",
"name": "Android 2 Application Dev",
"bookid": "1",
"description": "Providing in-depth coverage of how to build mobile applications using the next major release of the Android SDK, this invaluable resource takes a hands-on approach to discussing Android with a series of projects, each of which introduces a new feature and highlights techniques and best practices to get the most out of Android.",
"image1": "http://media.shelf-awareness.com/shelfcontest.png",
"image2": "http://cache0.bdcdn.net/assets/images/book/medium/9780/4704/9780470452622.jpg"
}
]
}