【发布时间】：2012-03-22 08:19:23
【问题描述】：
我有一些问题，我真的需要一些帮助： 我开发应用程序，我想要：
1-检索用户位置并将其显示在地图中。 2- 用户可以将图钉放在地图上的任何位置，我应该协调该图钉并将其存储在变量中
注意：我在 2.1 中的应用程序应该使用 google API 吗？如果是，Google API 是否支持任何活动而不是地图？
我在谷歌搜索并找到此代码：
package com.java.locate;
import android.app.Activity;
import android.content.Context;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;
public class AndroidLbsGeocodingProjectActivity extends Activity {
/** Called when the activity is first created. */
private static final long MINIMUM_DISTANCE_CHANGE_FOR_UPDATES = 1; // in Meters
private static final long MINIMUM_TIME_BETWEEN_UPDATES = 1000; // in Milliseconds
protected LocationManager locationManager;
protected Button retrieveLocationButton;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
retrieveLocationButton = (Button) findViewById(R.id.retrieve_location_button);
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
locationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER,
MINIMUM_TIME_BETWEEN_UPDATES,
MINIMUM_DISTANCE_CHANGE_FOR_UPDATES,
new MyLocationListener()
);
retrieveLocationButton.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
showCurrentLocation();
}
});
}
protected void showCurrentLocation() {
Location location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (location != null) {
String message = String.format(
"Current Location \n Longitude: %1$s \n Latitude: %2$s",
location.getLongitude(), location.getLatitude()
);
Toast.makeText(AndroidLbsGeocodingProjectActivity.this, message,
Toast.LENGTH_LONG).show();
}
}
private class MyLocationListener implements LocationListener {
public void onLocationChanged(Location location) {
String message = String.format(
"New Location \n Longitude: %1$s \n Latitude: %2$s",
location.getLongitude(), location.getLatitude()
);
Toast.makeText(AndroidLbsGeocodingProjectActivity.this, message, Toast.LENGTH_LONG).show();
}
public void onStatusChanged(String s, int i, Bundle b) {
Toast.makeText(AndroidLbsGeocodingProjectActivity.this, "Provider status changed",
Toast.LENGTH_LONG).show();
}
public void onProviderDisabled(String s) {
Toast.makeText(AndroidLbsGeocodingProjectActivity.this,
"Provider disabled by the user. GPS turned off",
Toast.LENGTH_LONG).show();
}
public void onProviderEnabled(String s) {
Toast.makeText(AndroidLbsGeocodingProjectActivity.this,
"Provider enabled by the user. GPS turned on",
Toast.LENGTH_LONG).show();
}
}
}
这是另一个代码，这是使用 google API，但我在使用此代码时有 2 个问题： 1-它不检索用户位置，它只是给我看地图。 2-谷歌 API 是否与另一个活动一起工作而不仅仅是地图？
package our.google.maps;
import java.util.List;
import java.util.Locale;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapController;
import com.google.android.maps.MapView;
import com.google.android.maps.MyLocationOverlay;
import com.google.android.maps.Overlay;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.location.Geocoder;
import android.location.Location;
import android.location.LocationListener;
import android.os.Bundle;
import android.view.MotionEvent;
import android.widget.Toast;
public class MapsActivity extends MapActivity {
/** Called when the activity is first created. */
long start;
long stop;
MyLocationOverlay compass;
MapController controller;
MapView map;
//136
int x,y;
GeoPoint touchedPoint;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
map=(MapView) findViewById(R.id.mvMain);
map.setBuiltInZoomControls(true);
Touchy t = new Touchy();
List<Overlay> overlaylist= map.getOverlays();
overlaylist.add(t);
compass = new MyLocationOverlay (MapsActivity.this, map);
overlaylist.add(compass);
//map controller to go to Specific Location n36eeh el 6ol & el 3r'9 135
controller=map.getController();
GeoPoint point = new GeoPoint (51643234 , 7848593);
controller.animateTo(point);
controller.setZoom(6);
}
@Override
protected void onPause() {
// TODO Auto-generated method stub
compass.disableCompass();
super.onPause();
}
@Override
protected void onResume() {
// TODO Auto-generated method stub
compass.enableCompass();
super.onResume();
}
@Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
class Touchy 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 >1500) {
AlertDialog alert = new AlertDialog.Builder(MapsActivity.this).create();
alert.setTitle("Pick an option");
alert.setMessage(" i told u to pick an option");
alert.setButton("place a pin", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
}
} );
alert.setButton2("get an address", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
Geocoder geocode = new Geocoder (getBaseContext(),Locale.getDefault());
try {
}
finally{}}}
);
alert.setButton3("option3 ", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
}
} );
alert.show();
return true;
}
return false;
}
}
private class MyLocationListener implements LocationListener{
public void onLocationChanged1(Location location) {
String message = String.format(
"New Location \n Longitude: %1$s \n Latitude: %2$s",
location.getLongitude(), location.getLatitude()
);
Toast.makeText(MapsActivity.this, message, Toast.LENGTH_LONG).show();
}
public void onStatusChanged(String s, int i, Bundle b) {
Toast.makeText(MapsActivity.this, "Provider status changed",
Toast.LENGTH_LONG).show();
}
public void onProviderDisabled(String s) {
Toast.makeText(MapsActivity.this,
"Provider disabled by the user. GPS turned off",
Toast.LENGTH_LONG).show();
}
public void onProviderEnabled(String s) {
Toast.makeText(MapsActivity.this,
"Provider enabled by the user. GPS turned on",
Toast.LENGTH_LONG).show();
}
public void onLocationChanged(Location location) {
// TODO Auto-generated method stub
}
}
}
另外，如果我的代码不正确，你能给我正确的男女同校吗？ StackOverFlow 成员你是我的英雄！请帮帮我！
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标签： java android google-maps