allVehiclesSpinner.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> arg0, View arg1,
int position, long arg3) {
String item=allVehiclesSpinner.getItemAtPosition(position).toString();
if(!item.equalsIgnoreCase("Select")){
position=0;
vdetails.vehicleNo = item;
dbhHelper.opendatabase();
vdetails=dbhHelper.getVehicleId(item);
dbhHelper.close();
getLiveTrackingsAsyncTask livetask=new getLiveTrackingsAsyncTask();
livetask.execute();
}
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
});
public class getLiveTrackingsAsyncTask extends AsyncTask<String, Void, String> {
private ProgressDialog Dialog;
@Override
protected void onPreExecute() {
Dialog = new ProgressDialog(VTS_LiveTracking.this);
Dialog.setMessage(VTS_LiveTracking.this.getResources().getString(
R.string.loading));
Dialog.setCanceledOnTouchOutside(false);
Dialog.show();
Dialog.setContentView(R.layout.progress);
super.onPreExecute();
}
@Override
protected String doInBackground(String... params) {
String result="";
Log.d(WebServiceHelper.TAG, "AsyncTask>>>>>>>>>>>");
if(isInternetPresent){
try {
Log.d(WebServiceHelper.TAG, "AsyncTask CHeck Internet>>>>>>>>>>>");
Log.d(WebServiceHelper.TAG, "VehicleId CHeck Internet>>>>>>>>>>>"+vdetails.vehicleId);
vd=WebServiceHelper.getLiveTrackingDetails(ClientCode, SecretCode, vdetails.vehicleId);
//vd=WebServiceHelper.getLiveTrackingDetails(ClientCode, SecretCode, "2");
Log.d(WebServiceHelper.TAG, "VD>>>>>>>>"+vd.length);
for(int i=0;i<vd.length;i++){
Log.d(WebServiceHelper.TAG, "LiveTrackingElements1>>>>>>>>>>>>>>"+vd[i].deviceMobNo);
Log.d(WebServiceHelper.TAG, "LiveTrackingElements2>>>>>>>>>>>>>>"+vd[i].driverName);
vdetails.latitude=vd[i].latitude;
vdetails.longitude=vd[i].longitude;
Log.d(WebServiceHelper.TAG, "vdetails.latitudeLiveTrackingElements1>>>>>>>>>>>>>>"+vdetails.latitude);
Log.d(WebServiceHelper.TAG, "vdetails.longitudeLiveTrackingElements2>>>>>>>>>>>>>>"+vdetails.longitude);
}
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
result="Success";
}else{
result="Failure";
}
return result;
}
@Override
protected void onPostExecute(String result) {
if(result.contentEquals("Success")){
Log.d(WebServiceHelper.TAG, "AsyncTaskonPostExecute>>>>>>>>>>>");
Log.d(WebServiceHelper.TAG, "statuslogin>>>>>>>>>>>"+vdetails.status_login);
if(vdetails.status_login.equals("success")){
String lat=vdetails.latitude;
String lon=vdetails.longitude;
latitude=Double.parseDouble(vdetails.latitude);
longitude=Double.parseDouble(vdetails.longitude);
Log.d(WebServiceHelper.TAG, "latitude>>>>"+vdetails.latitude);
Log.d(WebServiceHelper.TAG,"longitude>>>>"+vdetails.longitude);
latlng=new LatLng(latitude, longitude);
Marker m=map.addMarker(new MarkerOptions().position(latlng));
map.animateCamera(CameraUpdateFactory.newLatLngZoom(latlng, 15.0f));
map.setOnMarkerClickListener(new OnMarkerClickListener() {
@Override
public boolean onMarkerClick(Marker marker) {
final Dialog dialog = new Dialog(VTS_LiveTracking.this);
dialog.setContentView(R.layout.custom_dialog);
dialog.setTitle("Report");
TextView driver, speed,latitude,longitude,last_updated_time,gps_status,
driver_mobile_no,vehicle_idle_status,ac_status,device_mobile_no,engine_status;
driver = (TextView)dialog.findViewById(R.id.drivernametxt);
speed=(TextView)dialog.findViewById(R.id.speedvaluetxt);
latitude=(TextView)dialog.findViewById(R.id.latitudetxt);
longitude=(TextView)dialog.findViewById(R.id.longitudetxt);
last_updated_time=(TextView)dialog.findViewById(R.id.last_updated_timetxt);
gps_status=(TextView)dialog.findViewById(R.id.gps_statustxt);
driver_mobile_no=(TextView)dialog.findViewById(R.id.driver_mobile_notxt);
vehicle_idle_status=(TextView)dialog.findViewById(R.id.vehicle_idle_statustxt);
ac_status=(TextView)dialog. findViewById(R.id.ac_statustxt);
device_mobile_no=(TextView)dialog.findViewById(R.id.device_mobile_notxt);
engine_status=(TextView)dialog.findViewById(R.id.engine_statustxt);
driver.setText(vdetails.driverName);
speed.setText(vdetails.vehicleSpeed);
latitude.setText(vdetails.latitude);
longitude.setText(vdetails.longitude);
last_updated_time.setText(vdetails.lastUpdatedDateTime);
gps_status.setText(vdetails.gpsStatus);
driver_mobile_no.setText(vdetails.driverMobNo);
vehicle_idle_status.setText(vdetails.vehicleIdleStatus);
ac_status.setText(vdetails.acStatus);
device_mobile_no.setText(vdetails.deviceMobNo);
engine_status.setText(vdetails.engineStatus);
dialog.show();
Button cancel=(Button) dialog.findViewById(R.id.okbtn);
cancel.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
dialog.dismiss();
}
});
return false;
}
});
}else{
Toast.makeText(getApplicationContext(), vdetails.failReason, Toast.LENGTH_LONG).show();
}
}else if(result.contentEquals("Failure")){
Toast.makeText(getApplicationContext(), "Error in Login", Toast.LENGTH_LONG).show();
}
super.onPostExecute(result);
Dialog.dismiss();
Dialog=null;
}
}
}
您好，
对于我的应用程序，非常有必要在特定位置显示车辆的位置。车辆的位置由json webservices给出。车辆正在移动并且位置由webservice更新。但是根据我的代码车辆没有移动。如何在我的应用程序中实现车辆的移动？如何使用计时器实现位置更改？还有其他方法可以实现吗？
请帮我
这是我的代码
答案 0 :(得分：2)
使用Timer ..
mytimer = new Timer();
final TimerTask mytask = new TimerTask() {
public void run() {
//your code here
}
});
mytimer.scheduleAtFixedRate(mytask, int delay, int time);
答案 1 :(得分：0)
班级启动服务
allVehiclesSpinner.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> arg0, View arg1,
int position, long arg3) {
String item=allVehiclesSpinner.getItemAtPosition(position).toString();
if(!item.equalsIgnoreCase("Select")){
position=0;
vdetails.vehicleNo = item;
dbhHelper.opendatabase();
vdetails=dbhHelper.getVehicleId(item);
dbhHelper.close();
Intent intent = new Intent(A.this,
Service_A.class);
startService(intent);
}
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
});
使用服务更新1 SEC后的WEBSERVICE
Service_ A extend service
{
private Handler handler = new Handler();
@Override
public void run() {
// TODO Auto-generated method stub
handler.postDelayed(Service_ A.this,1000);
}
//do you code
}
答案 2 :(得分：0)
尝试使用线程调用异步任务，每隔一秒使用代码替换
getLiveTrackingsAsyncTask livetask=new getLiveTrackingsAsyncTask();
livetask.execute();
Thread thread = new Thread(new Runnable() {
@Override
public void run() {
try {
Thread.sleep(1 * 1000);
new getLiveTrackingsAsyncTask.execute();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
});
thread.start();