だから私はユーザーの場所を取得してトーストで表示しようとしています...しかしそれはまったく機能していません...私もアクティビティの開始時にトーストを表示しようとしましたが、それでも機能していませんこれが私のコードです
package com.example.alert;
import com.example.alert.CurrentLocation.MyLocationListener;
import android.app.Activity;
import android.app.ListActivity;
import android.content.Context;
import android.content.Intent;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ListView;
import android.widget.Toast;
public class ViewAlerters extends Activity{
private Button addButton;
private Button removeButton;
LocationManager lm=(LocationManager)getSystemService(Context.LOCATION_SERVICE);
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.view_alerters);
Toast.makeText( ViewAlerters.this,"Hello",Toast.LENGTH_SHORT).show();
LocationListener ll=new MyLocationListener();
//lm.requestLocationUpdates( LocationManager.GPS_PROVIDER, 5*60*10000, 0, ll);
lm.requestLocationUpdates( LocationManager.GPS_PROVIDER, 0, 0, ll);
setUpViews();
}
private void setUpViews() {
Toast.makeText( getApplicationContext(),"Hello",Toast.LENGTH_SHORT).show();
addButton = (Button) findViewById(R.id.add_button);
//alerterText = (TextView) findViewById(R.id.alert_list_text);
removeButton = (Button)findViewById(R.id.remove_button);
addButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent(ViewAlerters.this,AddAlerter.class);
startActivity(intent);
}
});
}
/* Class My Location Listener */
public class MyLocationListener implements LocationListener
{
public void onLocationChanged(Location loc)
{
if(loc!=null)
{
double x;
String Text = "My current location is: " +"Latitud = " + loc.getLatitude() +"Longitud = " + loc.getLongitude();
/* cr.moveToFirst();
while(!cr.isAfterLast()) {
al.add(cr.getString(cr.getColumnIndex(dbAdapter.KEY_NAME))); //add the item
cr.moveToNext();
}*/
// lm.addProximityAlert(loc.getLatitude(), loc.getLongitude(), 10009,, intent)
//for loop, alerters retrieving one by one
// x= calcDistance(loc.getLatitude(),loc.getLongitude(),z,y);
// if(x<1){
// Intent myIntent = new Intent(ViewAlerters.this,CallMode.class);
// startActivity(myIntent);
}
}
public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub
Toast.makeText( getApplicationContext(),"Gps Disabled - @From :Alert Me",Toast.LENGTH_SHORT ).show();
}
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
Toast.makeText( getApplicationContext(),"Gps Enabled - @From :Alert Me",Toast.LENGTH_SHORT).show();
}
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
}
public double calcDistance(double latA, double longA, double latB, double longB) {
double theDistance = (Math.sin(Math.toRadians(latA)) * Math.sin(Math.toRadians(latB)) + Math.cos(Math.toRadians(latA)) * Math.cos(Math.toRadians(latB)) * Math.cos(Math.toRadians(longA - longB)));
return new Double((Math.toDegrees(Math.acos(theDistance))) * 69.09*1.6093);
}
}