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我有一個航班列表，我使用JSON PARSING讀取數據，我做了這個，但我的問題是這個數據顯示，當所有的textview項目被加載，但我想要一個行項目是獲取比第一個項目後加載負荷加載由一個第二個項目一個不直接顯示的所有項當完整的數據下載時，Android listview無法一一加載項目是否完全加載？
我想這個在這裏你可以看到像什麼想和列表視圖
但這不是工作時，此告訴我RESULT直這樣的形象 
在這裏，我把我的代碼
HomeActivity.java
public class HomeActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.home);
new FlightListBack().execute("");
}
public class FlightListBack extends AsyncTask<String,ArrayList< HashMap<String,String>> , ArrayList<HashMap<String,String>>>
{
ArrayList<String> airportList = new ArrayList<String>();
JsonParser jparser= new JsonParser();
List<String> spinnercityList= new ArrayList<String>();
final List<String> spinnerAirportNameList= new ArrayList<String>();
JSONArray sjairport;
@Override
protected ArrayList<HashMap<String,String>> doInBackground(
String... params) {
ArrayList<HashMap<String, String>> flightList = new ArrayList<HashMap<String, String>>();
String flighturl = "http://api.flightstats.com/flex/flightstatus/rest/v2/json/airport/status/JFK/dep/2012/12/21/5?appId=4dde11f5&appKey=6b80a6ed5d82c8f0b&utc=false&numHours=6";
String jsonstringfunction=jparser.getJSONFromUrl(flighturl);
try
{
JSONObject jobject= new JSONObject(jsonstringfunction);
JSONObject appendix = jobject.getJSONObject(TAG_APPENDIX); Log.e("JOBJECT ","APPENDIX-->"+appendix.length());
// Airlines Array For Getting Airlines Name
JSONArray jairlines=appendix.getJSONArray(TAG_AIRLINES); Log.e("JSONARRAY","AIRLINES"+jairlines.length());
// Airport Array For Getting Airport Name
JSONArray jairport=appendix.getJSONArray(TAG_AIRPORT); Log.e("JSONARRAY","AIRPORT"+jairport.length());
// Flightstatuses Array For Getting INFO
JSONArray jflightstatuses=jobject.getJSONArray(TAG_FLIGHTSTATUSES); Log.e("JSONARRAY","FLIGHTSTATUSES"+jflightstatuses.length());
int i;
int j;
int k;
int m;
int n;
//****************************** Flightstatuses Array *****************************
for(i=0;i<jflightstatuses.length();i++)
{
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
arrivalairportfscode=jflightstatuses.getJSONObject(i).get(TAG_ARRIVALAIRPORTFSCODE).toString(); // Log.e("ArrivalAirportFsCode","AirportFSCode"+arrivalairportfscode);
carrierfscode=jflightstatuses.getJSONObject(i).get(TAG_CARRIERFSCODE).toString();
flightnumber=jflightstatuses.getJSONObject(i).get(TAG_FLIGHTNUMBER).toString();
//****************************** Airport Array *****************************
// Comparing ArrivalAirportFsCode For Finding The City Name
for(j=0;j<jairport.length();j++)
{
// Airport Fs Code from AirportArray
airportfs=jairport.getJSONObject(j).get(TAG_AIRPORTFS).toString(); // Log.e("AIRPORT","FS"+airportfs);
// Compare ArrivalAirport FsCode and Airport Fs Code For Finding City Name
if(arrivalairportfscode.equalsIgnoreCase(airportfs))
{
// City Name From Airport Array
city=jairport.getJSONObject(j).get(TAG_AIRPORTCITY).toString(); //Log.e("Airport City","City-->"+city);
destination="("+arrivalairportfscode+") "+city; //Log.e("Destination City","city"+destination);
flight=carrierfscode+" "+flightnumber;
}
} // airport for loop complete
map.put(TAG_MDESTINATION, destination);
map.put(TAG_MFLIGHT,flight);
//*******************************************************************************
//****************************** Airlines Array *****************************
// Comparing CarriersFsCode To AirlinesArrayfs for Finding The Airlines Names
for(k=0;k<jairlines.length();k++)
{
// Airport Fs Code from AirportArray
airlinesfs=jairlines.getJSONObject(k).get(TAG_AIRLINESFS).toString(); //Log.e("AIRLINES","FS"+airlinesfs);
// Compare ArrivalAirport FsCode and Airport Fs Code For Finding City Name
if(carrierfscode.equalsIgnoreCase(airlinesfs))
{
// Airlines Name From Airlines Array
airlinesname=jairlines.getJSONObject(k).get(TAG_AIRLINENAME).toString(); //Log.e("AIRLINES NAME","NAME"+airlinesname);
Log.e("--"+flight,"--"+airlinesname);
}
} // airlines for loop complete
map.put(TAG_MAIRLINE,airlinesname);
JSONObject joperationaltimes=jflightstatuses.getJSONObject(i).getJSONObject(TAG_OPERATIONALTIMES);
Log.e("Operational times","-->"+joperationaltimes);
// Schedule Time
JSONObject jschedulegatedeparture =new JSONObject();
JSONObject jestimateddeparture =new JSONObject();
for(m=0;m<joperationaltimes.length();m++)
{
if(joperationaltimes.has(TAG_SCHEDULEDGATEDEPARTURE))
{
jschedulegatedeparture=joperationaltimes.getJSONObject(TAG_SCHEDULEDGATEDEPARTURE);
schedule=jschedulegatedeparture.getString(TAG_SCHEDULEDATELOCAL).toString();
schedule=schedule.substring(11);
Log.e("Before convert","Time"+schedule);
DateFormat f1 = new SimpleDateFormat("hh:mm:ss");
Date d = f1.parse(schedule);
DateFormat f2 = new SimpleDateFormat("h:mm a");
schedule=f2.format(d).toLowerCase(); // "12:18am"
Log.e("After convert","Time"+schedule);
// jestimateddeparture=joperationaltimes.getJSONObject(TAG_ACTUALGATEDEPARTURE);
// actual=jestimateddeparture.getString(TAG_ACTUALDATELOCAL).toString();
// actual=actual.substring(11);
}
else
{
schedule="Not Available";
}
}
map.put(TAG_MSCHEDULE, schedule);
//Log.e("ScheduleGatedtime",""+jschedulegatedeparture);
//Log.e("Schedule Time","Work"+schedule);
//Log.e("ActualGatedtime",""+jestimateddeparture);
//Log.e("Actual Time","Work"+actual);
//------------------------------------------------------------------------------------
// AIRPORT RESOURCES OBJECT fOR getting departure terminal and departure gate
if(jflightstatuses.getJSONObject(i).has(TAG_AIRPORTRESOURCES))
{
JSONObject airportresources=jflightstatuses.getJSONObject(i).getJSONObject(TAG_AIRPORTRESOURCES);
Log.e("airportresources","--->"+airportresources);
if(airportresources.has(TAG_DEPARTURETERMINAL))
{
departureterminal=airportresources.get(TAG_DEPARTURETERMINAL).toString();
}
else
{
departureterminal="";
}
if(airportresources.has(TAG_DEPARTUREGATE))
{
departuregate=airportresources.get(TAG_DEPARTUREGATE).toString();
}
else
{
departuregate="";
}
terminal="T-"+departureterminal+" ";
gate=departuregate;
terminalgate=terminal+gate;
Log.e("Terminal Gate","-->"+terminal+gate);
map.put(TAG_MTERMINALGATE,terminalgate);
}
else
{
terminalgate="Not Available";
map.put(TAG_MTERMINALGATE,terminalgate);
}
status=jflightstatuses.getJSONObject(i).getString(TAG_STATUS).toString();
if(status.equalsIgnoreCase("S"))
{
status="Scheduled";
}
if(status.equalsIgnoreCase("L"))
{
status="Landed";
}
map.put(TAG_MFSTATUS, status);
flightList.add(map);
Log.e("FlightList","work"+flightList);
}
}
catch (Exception e)
{
e.printStackTrace();
}
return flightList;
}
protected void onPostExecute(ArrayList<HashMap<String, String>> flightList)
{
}
}
CustomListAdapter.java
public class CustomListAdapter extends BaseAdapter{
private LayoutInflater inflater;
private ArrayList<YourListRowObject> listItems;
public CustomListAdapter (Context context) {
inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
listItems = new ArrayList<YourListRowObject>();
}
public void addItem(YourListRowObject row) {
listItems.add(row);
notifyDataSetChanged();
}
public View getView(int position, View convertView, ViewGroup parent){
ViewHolder holder;
if (convertView == null) {
convertView = inflater.inflate(R.layout.list, null);
holder = new ViewHolder();
holder.textdestination = (TextView)convertView.findViewById(R.id.textdestination);
holder.textflight=(TextView)convertView.findViewById(R.id.textflight);
holder.textairline=(TextView)convertView.findViewById(R.id.textairline);
holder.textschedule=(TextView)convertView.findViewById(R.id.textschedule);
holder.texttermgate=(TextView)convertView.findViewById(R.id.texttermgate);
holder.textstatus=(TextView)convertView.findViewById(R.id.textstatus);
convertView.setTag(holder);
} else {
holder = (ViewHolder)convertView.getTag();
}
holder.textdestination.setText((listItems.get(position)).getMdestination());
holder.textflight.setText((listItems.get(position)).getMflight());
holder.textairline.setText((listItems.get(position)).getMairline());
holder.textschedule.setText((listItems.get(position)).getMschedule());
holder.texttermgate.setText((listItems.get(position)).getMtermgate());
holder.textstatus.setText((listItems.get(position)).getMstatus());
return convertView;
}
public int getCount() {
return listItems.size();
}
public Object getItem(int position) {
return listItems.get(position);
}
public long getItemId(int position) {
return position;
}
private class ViewHolder{
// add here views, which are defined in `list_row Layout`
TextView textdestination;
TextView textairline;
TextView textschedule;
TextView texttermgate;
TextView textstatus;
TextView textflight;
}
//contains data, which u get from server in json format. add here your fields
public class YourListRowObject{
public String mdestination;
public String mflight;
public String mairline;
public String mschedule;
public String mtermgate;
public String mstatus;
public String getMdestination() {
return mdestination;
}
public void setMdestination(String mdestination) {
this.mdestination = mdestination;
}
public String getMflight() {
return mflight;
}
public void setMflight(String mflight) {
this.mflight = mflight;
}
public String getMairline() {
return mairline;
}
public void setMairline(String mairline) {
this.mairline = mairline;
}
public String getMschedule() {
return mschedule;
}
public void setMschedule(String mschedule) {
this.mschedule = mschedule;
}
public String getMtermgate() {
return mtermgate;
}
public void setMtermgate(String mtermgate) {
this.mtermgate = mtermgate;
}
public String getMstatus() {
return mstatus;
}
public void setMstatus(String mstatus) {
this.mstatus = mstatus;
}
}
}
你知道列表視圖項加載懶適配器的概念？這會幫助你很多。 – itsrajesh4uguys
我將嘗試此鏈接，但仍然是顯示列表視圖後完成數據加載FOT文本列表視圖[http://www.technotalkative.com/android-asynchronous-image-loading-in-listview/] – Mahesh