Mainactivity：
public class MainActivity extends Activity {
GridView grid;
RelativeLayout r1;
int maxrows, maxcol;
ArrayList<LayoutData> data = new ArrayList<LayoutData>();
ArrayList<HashMap<String, String>> sheetdetails = new ArrayList<HashMap<String, String>>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
grid=(GridView)findViewById(R.id.gridview);
new GetRoute().execute("http://sb2.reloadit.in/TravelServices.asmx/Getlayout");
}
private class GetRoute extends AsyncTask<String, Void, JSONObject> {
/*String mJourneyDate;
public GetData(String pJourneyDate) {
this.mJourneyDate = pJourneyDate;
}*/ProgressDialog pd = null;
@Override
protected void onPreExecute() {
super.onPreExecute();
pd = ProgressDialog.show(MainActivity.this, "", "Loading...", true);
}
@Override
protected JSONObject doInBackground(String... params) {
String response;
try {
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(params[0]);
List<NameValuePair> nameValuePair = new ArrayList<NameValuePair>(2);
nameValuePair.add(new BasicNameValuePair("RouteScheduleID","4798657"));
nameValuePair.add(new BasicNameValuePair("JourneyDate","2014-12-20"));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePair));
HttpResponse responce = httpclient.execute(httppost);
HttpEntity httpEntity = responce.getEntity();
response = EntityUtils.toString(httpEntity);
Log.d("response is", response);
return new JSONObject(response);
} catch (Exception ex) {
ex.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(JSONObject result)
{
super.onPostExecute(result);
//Log.v("TAG_RESULTadapter",""+result);
pd.dismiss();
if(result != null)
{
try
{
JSONObject jobj = result.getJSONObject("Response");
String message = jobj.getString("Message");
String issuceess = jobj.getString("IsSuccess");
if(issuceess.equals("true"))
{
JSONObject layout = result.getJSONObject("Layout");
// Log.v("TAG_routearray",""+layoutarray);
maxrows=layout.getInt("MaxRows");
maxcol=layout.getInt("MaxColumns");
grid.setNumColumns(maxcol);
JSONArray routearray = layout.getJSONArray("SeatDetails");
for (int i = 0; i < routearray.length(); i++) {
String Row = routearray.getJSONObject(i).getString("Row");
// Log.v("TAG_routearray",""+Row);
String Col = routearray.getJSONObject(i).getString("Col");
String Height = routearray.getJSONObject(i).getString("Height");
String Width = routearray.getJSONObject(i).getString("Width");
String SeatNo = routearray.getJSONObject(i).getString("SeatNo");
String Gender = routearray.getJSONObject(i).getString("Gender");
String Deck = routearray.getJSONObject(i).getString("Deck");
String IsAvailable = routearray.getJSONObject(i).getString("IsAvailable");
String Fare = routearray.getJSONObject(i).getString("Fare");
Log.v("TAG_Maxfare",""+Fare);
HashMap<String, String> map = new HashMap<String, String>();
map.put("Row", Row);
map.put("Col", Col);
map.put("Height", Height);
map.put("Width", Width);
map.put("SeatNo", SeatNo);
map.put("Deck", Deck);
map.put("IsAvailable", IsAvailable);
map.put("Gender", Gender);
if(Height.equalsIgnoreCase("1")&& Width.equalsIgnoreCase("1")) {
if(SeatNo.equalsIgnoreCase("")&& IsAvailable.equalsIgnoreCase("false")){
map.put("seat_img", ""+R.drawable.noseat);
}
else{
if(IsAvailable.equalsIgnoreCase("false")&&SeatNo!= ""){
map.put("seat_img", ""+R.drawable.seatgreen);
}
if(IsAvailable.equalsIgnoreCase("false")&&SeatNo!= ""&& Gender.equalsIgnoreCase("F")){
map.put("seat_img", ""+R.drawable.women);
}
if(SeatNo== ""&& Gender.equalsIgnoreCase("M")){
map.put("seat_img", ""+R.drawable.noseat);
}
/* if(IsAvailable.equalsIgnoreCase("false")){
map.put("seat_img", ""+R.drawable.seatgreen);
}*/else if(IsAvailable.equalsIgnoreCase("true")){
map.put("seat_img", ""+R.drawable.seat);
}
}
}
map.put("Fare", Fare);
sheetdetails.add(map);
}
CustomGrid adapter = new CustomGrid(MainActivity.this, sheetdetails);
grid.setAdapter(adapter);
}
}
catch (Exception e)
{
e.printStackTrace();
}
}
else
{
Toast.makeText(MainActivity.this, "Network Problem", Toast.LENGTH_LONG).show();
}
}
}
}
适配器类：
public class CustomGrid extends BaseAdapter{
private Context mContext;
ArrayList<HashMap<String, String>> sheetdetails = new ArrayList<HashMap<String, String>>();
public CustomGrid(Context c,ArrayList<HashMap<String, String>> sheetdetails) {
mContext = c;
this.sheetdetails= sheetdetails;
}@Override
public int getCount() {
// TODO Auto-generated method stub
return sheetdetails.size();
}@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return sheetdetails.get(position);
}
@Override
public long getItemId(int arg0) {
// TODO Auto-generated method stub
return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
View grid;
LayoutInflater inflater = (LayoutInflater) mContext
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null) {
grid = new View(mContext);
grid = inflater.inflate(R.layout.row_grid, null);
ImageView imageView = (ImageView) grid.findViewById(R.id.grid_image);
HashMap<String, String> map = sheetdetails.get(position);
String gg =map.get("Gender");
Log.v("TAG_UUUUU",""+gg);
imageView.setImageResource(Integer.valueOf(map.get("seat_img")));
} else {
grid = (View) convertView;
}
return grid;
}
}
Json:
"Layout": {
"ExtensionData": {},
"MaxRows": 13,
"MaxColumns": 5,
"SeatDetails": [
{
"ExtensionData": {},
"Row": 0,
"Col": 1,
"Height": 1,
"Width": 1,
"SeatNo": "48",
"Gender": "",
"IsAisle": false,
"Deck": 1,
"IsAC": true,
"IsSleeper": false,
"IsAvailable": true,
"Fare": 1400,
"ChildFare": 0,
"InfantFare": 0
},
{
"ExtensionData": {},
"Row": 0,
"Col": 2,
"Height": 1,
"Width": 1,
"SeatNo": "",
"Gender": "M",
"IsAisle": true,
"Deck": 1,
"IsAC": true,
"IsSleeper": false,
"IsAvailable": false,
"Fare": 0,
"ChildFare": 0,
"InfantFare": 0
},
这是我的json。每次从json我得到max-col，max row。
从json创建一个动态地使用max-col和max-row的网格视图。
之后基于json的row和col索引，我需要在网格中放置一个图像。
例如，如果没有[0,0]索引，则保留该网格。如果[0,2]索引在那里将图像放入网格中。
从3天开始，我试图了解索引网格，但我没有得到任何东西。请帮帮我。
答案 0 :(得分：0)
imageView.setImageResource(Integer.valueOf(map.get("seat_img")));
您应该从条件语句中执行此操作。即使转换视图不为空，它也会发生变化。