嗨，我一直在尝试获取并查明手机的位置（用户当前位置），但是我没有运气。我希望有人可以帮助我编写代码。
只是为了添加更多内容，我收到“无法获取连接工厂客户端”错误。这是否与返回用户位置的能力有关？
如果有帮助，我一直在关注 thenewboston 的教程。
还是这与我的 API 密钥有关？但我可以正常接收地图，但无法精确定位用户当前位置
主要代码：
public class Map extends MapActivity implements LocationListener{
MapView map;
long start;
long stop;
MyLocationOverlay compass;
MapController controller;
int x,y;
GeoPoint touchedPoint;
Drawable d;
List<Overlay> overlayList;
LocationManager lm;
LocationListener ll;
String towers;
int lat = 0;
int longi = 0;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_map);
map = (MapView)findViewById(R.id.mapview);
map.setBuiltInZoomControls(true);
touch t = new touch();
overlayList = map.getOverlays();
overlayList.add(t);
compass = new MyLocationOverlay(Map.this, map);
overlayList.add(compass);
controller = map.getController();
GeoPoint point = new GeoPoint(832332,4121093);
controller.animateTo(point);
controller.setZoom(8);
d = getResources().getDrawable(R.drawable.pointer);
//placing location
lm =(LocationManager) getSystemService(Context.LOCATION_SERVICE);
Criteria crit = new Criteria();
towers = lm.getBestProvider(crit, false);
Location loc = lm.getLastKnownLocation(towers);
if(loc != null){
lat = (int) (loc.getLatitude() *1E6);
longi = (int)(loc.getLongitude()*1E6);
GeoPoint location = new GeoPoint(lat, longi);
OverlayItem overlayitem = new OverlayItem(location , "wassup", "2nd string");
CustomPinPoint custom = new CustomPinPoint(d, Map.this);
custom.insertPinPoint(overlayitem);
overlayList.add(custom);
}else{
Toast.makeText(Map.this, "Location is null", Toast.LENGTH_LONG).show();
lm.requestLocationUpdates(towers, 1500, 1, this);
}
}
@Override
protected void onPause() {
// TODO Auto-generated method stub
compass.disableCompass();
super.onPause();
lm.removeUpdates(this);
}
@Override
protected void onResume() {
// TODO Auto-generated method stub
compass.enableCompass();
super.onResume();
lm.requestLocationUpdates(towers, 500, 1, this);
}
我认为您可以忽略警报对话框
public class touch extends Overlay {
public boolean onTouchEvent(MotionEvent e, MapView m){
if(e.getAction()== MotionEvent.ACTION_DOWN){
start = e.getEventTime();
x = (int) e.getX();
y = (int) e.getY();
touchedPoint = map.getProjection().fromPixels(x, y);
}
if(e.getAction()== MotionEvent.ACTION_UP){
stop = e.getEventTime();
}
if(stop-start >1200){
AlertDialog alert = new AlertDialog.Builder(Map.this).create();
alert.setTitle("Option");
alert.setMessage("Pick the option");
alert.setCanceledOnTouchOutside(true);
alert.setButton("Place pointer pinpoint",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
OverlayItem overlayitem = new OverlayItem(touchedPoint , "wassup", "2nd string");
CustomPinPoint custom = new CustomPinPoint(d, Map.this);
custom.insertPinPoint(overlayitem);
overlayList.add(custom);
}
});
alert.setButton2("Get address",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
Geocoder geocoder = new Geocoder(getBaseContext(), Locale.getDefault());
try{
List<Address> address = geocoder.getFromLocation(touchedPoint.getLatitudeE6()
/1E6, touchedPoint.getLongitudeE6() /1E6, 1);
if (address.size()>0){
String display = "";
for(int i=0 ; i<address.get(0).getMaxAddressLineIndex(); i++){
display +=address.get(0).getAddressLine(i) + "\n";
}
Toast t = Toast.makeText(getBaseContext(), display, Toast.LENGTH_LONG);
t.show();
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
}
}
});
alert.setButton3("Toggle View",
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
if(map.isSatellite()){
map.setSatellite(false);
map.setStreetView(true);
}else{
map.setStreetView(false);
map.setSatellite(true);
}
}
});
alert.show();
return true;
}
return false;
}
}
@Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_map, menu);
return true;
}
@Override
public void onLocationChanged(Location l) {
// TODO Auto-generated method stub
lat = (int)(l.getLatitude()*1E6);
longi = (int)(l.getLongitude()*1E6);
GeoPoint location = new GeoPoint(lat, longi);
OverlayItem overlayitem = new OverlayItem(location , "wassup", "2nd string");
CustomPinPoint custom = new CustomPinPoint(d, Map.this);
custom.insertPinPoint(overlayitem);
overlayList.add(custom);
}
@Override
public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub
}
@Override
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
}
CustomPinPoint 代码：
public class CustomPinPoint extends ItemizedOverlay<OverlayItem> {
private ArrayList<OverlayItem> pinpoints = new ArrayList<OverlayItem>();
private Context c;
// tesst google code
public CustomPinPoint(Drawable defaultMarker) {
super(boundCenterBottom(defaultMarker));
// TODO Auto-generated constructor stub
}
public CustomPinPoint(Drawable defaultMarker, Context context) {
// TODO Auto-generated constructor stub
this(defaultMarker); //original code
}
@Override
protected OverlayItem createItem(int i) {
// TODO Auto-generated method stub
return pinpoints.get(i);
}
@Override
public int size() {
// TODO Auto-generated method stub
return pinpoints.size();
}
public void insertPinPoint(OverlayItem item){
pinpoints.add(item);
// this.populate(); // original code
// test code
populate();
}
@Override
protected boolean onTap(int index){
OverlayItem item = pinpoints.get(index);
AlertDialog.Builder dialog = new AlertDialog.Builder(c);
dialog.setTitle(item.getTitle());
dialog.setMessage(item.getSnippet());
dialog.show();
return true;
}
public void addOverlay(OverlayItem overlay) {
// TODO Auto-generated method stub
pinpoints.add(overlay);
populate();
}
}
XML 代码：
<com.google.android.maps.MapView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/mapview"
android:enabled="true"
android:clickable="true"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:apiKey="0t9rHfGlUPgisa8P9MRAsSxhRXTVCL0XJog7uiA"
/>