Baidu map, click the map to get the latitude and longitude, And the location to get the latitude and longitude

Source: Internet
Author: User

Baidu map, click the map to get the latitude and longitude, And the location to get the latitude and longitude

In the past two days, I mainly went to Baidu map. At the beginning, I was confused about what covered things and what points of interest .....

So this article will introduce some basic knowledge, covering things on a map, such

Interest points are the places in circles, including restaurants and buildings.

 

Okay, then let's talk about the map. First, you must get a KEY. Because there is no such thing, you won't be able to load the map... I'm so lazy and go around a big circle. Apply for a project and check the official website.

 

Then you can go to the next official Demo and watch the API change its code. Demo: http://lbsyun.baidu.com/sdk/download? Qq-pf-to = pcqq. C2C

 

Well, paste the code. Enter the longitude and latitude, and set a position. You can click the attachment. Obtain the longitude and latitude of the click

. Java

 

Package com. example. mybaidumap;


Import android. app. Activity;
Import android. content. Intent;




Import android. OS. Bundle;
Import android. util. Log;
Import android. view. View;
Import android. view. View. OnClickListener;
Import android. widget. Button;
Import android. widget. EditText;
Import android. widget. TextView;
Import android. widget. Toast;


Import com. baidu. location. BDLocation;
Import com. baidu. location. BDLocationListener;
Import com. baidu. location. LocationClient;
Import com. baidu. location. LocationClientOption;
Import com. baidu. mapapi. SDKInitializer;
Import com. baidu. mapapi. map. BaiduMap;
Import com. baidu. mapapi. map. BaiduMap. OnMapClickListener;
Import com. baidu. mapapi. map. BitmapDescriptor;
Import com. baidu. mapapi. map. BitmapDescriptorFactory;


Import com. baidu. mapapi. map. MapController;
Import com. baidu. mapapi. map. MapPoi;
Import com. baidu. mapapi. map. MapStatusUpdate;
Import com. baidu. mapapi. map. MapStatusUpdateFactory;
Import com. baidu. mapapi. map. MapView;
Import com. baidu. mapapi. map. MarkerOptions;
Import com. baidu. mapapi. map. MyLocationData;
Import com. baidu. mapapi. map. OverlayOptions;
Import com. baidu. mapapi. model. LatLng;
Import com. baidu. mapapi. search. core. SearchResult;
Import com. baidu. mapapi. search. geocode. GeoCodeOption;
Import com. baidu. mapapi. search. geocode. GeoCodeResult;
Import com. baidu. mapapi. search. geocode. GeoCoder;
Import com. baidu. mapapi. search. geocode. OnGetGeoCoderResultListener;
Import com. baidu. mapapi. search. geocode. ReverseGeoCodeOption;
Import com. baidu. mapapi. search. geocode. ReverseGeoCodeResult;
Import com. baidu. nplatform. comapi. basestruct. GeoPoint;
Import com. baidu. mapapi. map. LocationData;
Import com. baidu. mapapi. map. MapController;
// Baidu map. Required parameter: longitude and latitude. You can click it. The result is: Address, longitude and latitude.
Public class MainActivity extends Activity implements
OnGetGeoCoderResultListener, OnClickListener {
MapView mMapView = null;
BaiduMap mBaiduMap;
Boolean isFirstLoc = true;
Private String address;
GeoCoder mSearch;
Private TextView conaddress;
Private MapController mMapController = null;
LatLng latlng;
Private Button OK;
Double lon, lat;



@ Override
Protected void onCreate (Bundle savedInstanceState ){
Super. onCreate (savedInstanceState );

SDKInitializer. initialize (getApplicationContext ());
SetContentView (R. layout. activity_main );
// Initialization. lat and lon are longitude and latitude values.
OK = (Button) findViewById (R. id. OK );
OK. setOnClickListener (this );
Conaddress = (TextView) findViewById (R. id. conaddress );
Lat = 39.904965;
Lon = 116.327764;
Latlng = new LatLng (lat, lon );

// Obtain map Control Reference
MMapView = (MapView) findViewById (R. id. bmapView );

MBaiduMap = mMapView. getMap ();
MSearch = GeoCoder. newInstance ();
// Set the initial Zoom size of the map.
MBaiduMap. setMapStatus (MapStatusUpdateFactory. zoomTo (17366f ));
// Enable the positioning Layer
// MBaiduMap. setMyLocationEnabled (true );


// Initialize the search module and register the event listener
MSearch = GeoCoder. newInstance ();
MSearch. setOnGetGeoCodeResultListener (this );
MSearch. reverseGeoCode (new ReverseGeoCodeOption ()
. Location (latlng ));



LocationClientOption option = new LocationClientOption ();
Option. setOpenGps (true); // enable gps
Option. setCoorType ("bd09ll"); // sets the coordinate type.
Option. setScanSpan (1000 );
Option. setAddrType ("all ");

OnMapClickListener listener = new OnMapClickListener (){
/**
* Map Click Event Callback Function
*
* @ Param point, poi
* Geographical coordinates of clicks, points of interest
*/



@ Override
Public void onMapClick (LatLng point ){
// TODO Auto-generated method stub
LatLng ptCenter = point;
// Anti-Geo search
MSearch. reverseGeoCode (new ReverseGeoCodeOption ()
. Location (ptCenter ));
PopWin (point );
Lon = point. longpolling;
Lat = point. latitude;
}


@ Override
Public boolean onMapPoiClick (MapPoi poi ){
// TODO Auto-generated method stub
Conaddress. setText (poi. getName ());
Log. w ("tag", poi. getName ());
PopWin (poi. getPosition ());
Lat = poi. getPosition (). latitude;
Lon = poi. getPosition (). longpolling;
Return false;

}
};
MBaiduMap. setOnMapClickListener (listener );
}


@ Override
Protected void onDestroy (){
Super. onDestroy ();
// Execute mMapView. onDestroy () When onDestroy is executed in the activity to implement map lifecycle management.
MMapView. onDestroy ();
MSearch. destroy ();
}


@ Override
Protected void onResume (){
Super. onResume ();
// Execute mMapView. onResume () When onResume is executed in the activity to implement map lifecycle management
MMapView. onResume ();
}


@ Override
Protected void onPause (){
Super. onPause ();
// Execute mMapView. onPause () When onPause is executed in the activity to implement map lifecycle management.
MMapView. onPause ();
}




// Custom prompt icon market
Public void popWin (LatLng point ){
// Construct the Marker icon
BitmapDescriptor bitmap = BitmapDescriptorFactory
. FromResource (R. drawable. nav_turn_via_1 );
// Construct a MarkerOption to add a Marker to a map
OverlayOptions option = new MarkerOptions (). position (point)
. Icon (bitmap );
// Add a Marker to the map and display it
MBaiduMap. clear ();
MBaiduMap. addOverlay (option );
}
// Address Encoding
@ Override
Public void onGetGeoCodeResult (GeoCodeResult result ){
If (result = null | result. error! =


SearchResult. ERRORNO. NO_ERROR ){
Toast. makeText (MainActivity. this, "Sorry, The result cannot be found ",


Toast. LENGTH_LONG)
. Show ();
Return;
}
MBaiduMap. clear ();
MBaiduMap. addOverlay (new MarkerOptions (). position


(Result. getLocation ())
. Icon (BitmapDescriptorFactory
. FromResource


(R. drawable. nav_turn_via_1 )));
MBaiduMap. setMapStatus (MapStatusUpdateFactory. newLatLng (result
. GetLocation ()));
String strInfo = String. format ("latitude: % f longitude: % f ",
Result. getLocation (). latitude,


Result. getLocation (). longpolling );

Toast. makeText (MainActivity. this, strInfo,


Toast. LENGTH_LONG). show ();
Conaddress. setText (result. getAddress ());
}
// Edit
@ Override
Public void onGetReverseGeoCodeResult (ReverseGeoCodeResult result ){
If (result = null | result. error! =


SearchResult. ERRORNO. NO_ERROR ){
Toast. makeText (MainActivity. this, "Sorry, The result cannot be found ",


Toast. LENGTH_LONG)
. Show ();
Return;
}
MBaiduMap. clear ();
MBaiduMap. addOverlay (new MarkerOptions (). position


(Result. getLocation ())
. Icon (BitmapDescriptorFactory
. FromResource


(R. drawable. nav_turn_via_1 )));
MBaiduMap. setMapStatus (MapStatusUpdateFactory. newLatLng (result
. GetLocation ()));
Conaddress. setText (result. getAddress ());


}
// Click "OK" to upload the value
@ Override
Public void onClick (View v ){
// TODO Auto-generated method stub
Int id = v. getId ();
If (id = R. id. OK)
{
If (conaddress. getText ()! = Null ){
Intent intent = new Intent (MainActivity. this, Resultt. class );
Intent. putExtra ("address", conaddress. getText ());
Intent. putExtra ("lat", lat + "");
Intent. putExtra ("lon", lon + "");
StartActivity (intent );
}
}

}


}

 

 

 

. Xml:

<RelativeLayout xmlns: android = "http://schemas.android.com/apk/res/android"
Xmlns: tools = "http://schemas.android.com/tools"
Android: layout_width = "match_parent"
Android: layout_height = "match_parent"
Android: paddingBottom = "@ dimen/activity_vertical_margin"
Android: paddingLeft = "@ dimen/activity_horizontal_margin"
Android: paddingRight = "@ dimen/activity_horizontal_margin"
Android: paddingTop = "@ dimen/activity_vertical_margin"
Tools: context = ". MainActivity">
<FrameLayout
Android: layout_width = "fill_parent"
Android: layout_height = "wrap_content"
>

<RelativeLayout
Android: layout_width = "fill_parent"
Android: layout_height = "wrap_content"
>

<Com. baidu. mapapi. map. MapView
Android: id = "@ + id/bmapView"
Android: layout_width = "fill_parent"
Android: layout_height = "fill_parent"
Android: clickable = "true"/>


<TextView
Android: id = "@ + id/conaddress"
Android: layout_width = "fill_parent"
Android: gravity = "left | center_vertical"
Android: paddingLeft = "10dp"
Android: layout_height = "40dp"
Android: textSize = "13sp"
Android: background = "#45000000"
Android: layout_alignParentTop = "true"
Android: textColor = "# FFFFFF"
/>


<Button
Android: id = "@ + id/OK"
Android: layout_width = "wrap_content"
Android: layout_height = "40dp"
Android: layout_alignBottom = "@ + id/conaddress"
Android: layout_alignParentRight = "true"
Android: layout_alignParentTop = "true"
Android: textSize = "20dip"
Android: text = "OK"/>


</RelativeLayout>

</FrameLayout>
</RelativeLayout>

Source code: http://www.jinhusns.com/Products/Download

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