我使用基本适配器类在自定义列表视图中显示了itemimage和itemname。我从listview中选择一个项目图像意味着当时屏幕分为两半。
所有listview项目的一半，我希望另一半窗口显示所选项目。我怎么能这样做？
用于显示itemimage，itemname，itemdesc，自定义列表视图代码中的费率
public class Appetizerlist extends BaseAdapter {
public static ArrayList<String> arr = new ArrayList<String>();
public static ArrayList<String> itemprice = new ArrayList<String>();
public static ArrayList<Bitmap> image = new ArrayList<Bitmap>();
public Context Context;
String qrimage;
Bitmap bmp, resizedbitmap;
Bitmap[] bmps;
Activity activity = null;
private LayoutInflater inflater;
private ImageView[] mImages;
String[] itemimage;
TextView[] tv;
String itemname, price, desc, itemno;
String[] itemnames, checkeditems, itemnos;
String[] prices;
String[] descs;
HashMap<String, String> map = new HashMap<String, String>();
public Appetizerlist(Context context, JSONArray imageArrayJson) {
Context = context;
// inflater =
// (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
// imageLoader=new ImageLoader(activity);
inflater = LayoutInflater.from(context);
this.mImages = new ImageView[imageArrayJson.length()];
this.bmps = new Bitmap[imageArrayJson.length()];
this.itemnames = new String[imageArrayJson.length()];
this.prices = new String[imageArrayJson.length()];
this.descs = new String[imageArrayJson.length()];
this.itemnos = new String[imageArrayJson.length()];
try {
for (int i = 0; i < imageArrayJson.length(); i++) {
JSONObject image = imageArrayJson.getJSONObject(i);
qrimage = image.getString("itemimage");
itemname = image.getString("itemname");
itemno = new Integer(i + 1).toString();
price = image.getString("price");
desc = image.getString("itemdesc");
System.out.println(price);
itemnames[i] = itemname;
prices[i] = price;
descs[i] = desc;
itemnos[i] = itemno;
byte[] qrimageBytes = Base64.decode(qrimage.getBytes());
bmp = BitmapFactory.decodeByteArray(qrimageBytes, 0,
qrimageBytes.length);
int width = 100;
int height = 100;
resizedbitmap = Bitmap.createScaledBitmap(bmp, width, height,
true);
bmps[i] = bmp;
mImages[i] = new ImageView(context);
mImages[i].setImageBitmap(resizedbitmap);
mImages[i].setScaleType(ImageView.ScaleType.FIT_START);
// tv[i].setText(itemname);
}
System.out.println(map);
} catch (Exception e) {
// TODO: handle exception
}
}
public Appetizerlist() {
// TODO Auto-generated constructor stub
}
public int getCount() {
return mImages.length;
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(final int position, View convertView, ViewGroup parent) {
View view = convertView;
final ViewHolder viewHolder;
if (view == null) {
view = inflater.inflate(R.layout.appetiserlistview, null);
viewHolder = new ViewHolder();
viewHolder.image = (ImageView) view
.findViewById(R.id.appetiserimage);
viewHolder.text = (TextView) view.findViewById(R.id.appetisertext);
viewHolder.desc = (TextView) view.findViewById(R.id.appetiserdesc);
viewHolder.price = (TextView) view
.findViewById(R.id.appetiserprice);
viewHolder.appitemnum = (TextView) view
.findViewById(R.id.appitemno);
// viewHolder.checkbox = (CheckBox) view.findViewById(R.id.bcheck);
view.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) view.getTag();
}
viewHolder.image.setImageBitmap(bmps[position]);
viewHolder.appitemnum.setText(itemnos[position]);
viewHolder.price.setText(prices[position]);
viewHolder.desc.setText(descs[position]);
// viewHolder.checkbox.setTag(itemnames[position]);
ViewHolder holder = (ViewHolder) view.getTag();
holder.text.setText(itemnames[position]);
*/
return view;
}
static class ViewHolder {
protected TextView text, price, desc, appitemnum;
protected ImageView image;
public static CheckBox checkbox = null;
}
}
这是我的活动代码
public class Appetizers extends Activity {
ImageView back;
String url;
String Qrimage;
Bitmap bmp;
GridView list;
Appetizerlist adapter;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.appetizers);
url=getIntent().getStringExtra("url");
ArrayList<HashMap<String, String>> mylist = new ArrayList<HashMap<String, String>>();
InputStream is = null;
String result = "";
JSONObject jArray = null;
try {
HttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url+"Appetiser.php3");
HttpResponse response = httpClient.execute(httpPost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
} catch (Exception e) {
// TODO: handle exception
Log.e("Log", "Error in Connection" + e.toString());
Toast.makeText(getApplicationContext(), "Error in Connection",
Toast.LENGTH_SHORT).show();
//Intent intent = new Intent(ViewQRCode.this, PimCarder.class);
//startActivity(intent);
}
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(
is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
result = sb.toString();
jArray = new JSONObject(result);
JSONArray json = jArray.getJSONArray("appetiser");
list=(GridView)findViewById(R.id.appetiserlist);
adapter=new Appetizerlist(this, json);
list.setAdapter(adapter);
/* list.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> arg0, View arg1,
int arg2, long arg3) {
// TODO Auto-generated method stub
Toast.makeText(getApplicationContext(), "prakash", 3000).show();
}
});*/
// ListView g = (ListView) findViewById(R.id.gallery);
// g.setAdapter(new ImageAdapter(this, json));
} catch (Exception e) {
// TODO: handle exception
Log.e("log", "Error in Passing data" + e.toString());
}
}
}
上面的代码我可以显示自定义列表视图。我想在自定义列表视图中选择一个项目意味着窗口已分为两半。一个用于相同的自定义列表视图另一半我想显示所选项目详细信息。
答案 0 :(得分：1)
请参阅此链接
如果不使用不同的手机/平板电脑布局............
http://developer.android.com/guide/topics/fundamentals/fragments.html#Example
void showDetails(int index) {
mCurCheckPosition = index;
// We can display everything in-place with fragments, so update
// the list to highlight the selected item and show the data.
getListView().setItemChecked(index, true);
// Check what fragment is currently shown, replace if needed.
DetailsFragment details = (DetailsFragment)
getFragmentManager().findFragmentById(R.id.details);
if (details == null || details.getShownIndex() != index) {
// Make new fragment to show this selection.
details = DetailsFragment.newInstance(index);
// Execute a transaction, replacing any existing fragment
// with this one inside the frame.
FragmentTransaction ft = getFragmentManager().beginTransaction();
ft.replace(R.id.details, details);
ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
ft.commit();
}
}