Mega Code Archive
Location service and LocationManager
<![CDATA[
package app.Test;
import java.util.List;
import android.app.Activity;
import android.location.Criteria;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.location.LocationProvider;
import android.os.Bundle;
import android.widget.TextView;
public class appTest extends Activity implements LocationListener {
private static final String[] A = { "n/a", "fine", "coarse" };
private static final String[] P = { "n/a", "low", "medium", "high" };
private static final String[] S = { "out of service","temporarily unavailable", "available" };
private LocationManager mgr;
private TextView output;
private String best;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mgr = (LocationManager) getSystemService(LOCATION_SERVICE);
output = (TextView) findViewById(R.id.output);
log("Location providers:");
List<String> providers = mgr.getAllProviders();
for (String provider : providers) {
dumpProvider(provider);
}
Criteria criteria = new Criteria();
best = mgr.getBestProvider(criteria, true);
log("\nBest provider is: " + best);
Location location = mgr.getLastKnownLocation(best);
dumpLocation(location);
}
@Override
protected void onResume() {
super.onResume();
mgr.requestLocationUpdates(best, 15000, 1, this);
}
@Override
protected void onPause() {
super.onPause();
mgr.removeUpdates(this);
}
public void onLocationChanged(Location location) {
dumpLocation(location);
}
public void onProviderDisabled(String provider) {
log("\nProvider disabled: " + provider);
}
public void onProviderEnabled(String provider) {
log("\nProvider enabled: " + provider);
}
public void onStatusChanged(String provider, int status, Bundle extras) {
log("\nProvider status changed: " + provider + ", status=" + S[status]
+ ", extras=" + extras);
}
private void log(String string) {
output.append(string + "\n");
}
private void dumpProvider(String provider) {
LocationProvider info = mgr.getProvider(provider);
StringBuilder builder = new StringBuilder();
builder.append("LocationProvider[").append("name=")
.append(info.getName()).append(",enabled=")
.append(mgr.isProviderEnabled(provider))
.append(",getAccuracy=").append(A[info.getAccuracy()])
.append(",getPowerRequirement=")
.append(P[info.getPowerRequirement()])
.append(",hasMonetaryCost=").append(info.hasMonetaryCost())
.append(",requiresCell=").append(info.requiresCell())
.append(",requiresNetwork=").append(info.requiresNetwork())
.append(",requiresSatellite=").append(info.requiresSatellite())
.append(",supportsAltitude=").append(info.supportsAltitude())
.append(",supportsBearing=").append(info.supportsBearing())
.append(",supportsSpeed=").append(info.supportsSpeed())
.append("]");
log(builder.toString());
}
private void dumpLocation(Location location) {
if (location == null)
log("\nLocation[unknown]");
else
log("\n" + location.toString());
}
}
//main.xml
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView
android:id="@+id/output"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
</ScrollView>
]]>