Android: Baidu map app and android Baidu map app

Android: Baidu map app and android Baidu map app

Based on Baidu api

Copy

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

Variable to be defined

private BaiduMap mBaiduMap;    private MapView mMapView;    private LocationClient mLocationClient;    private boolean isFirstIn = true;

Initialization

mMapView= (MapView) findViewById(R.id.bmapView);        mBaiduMap = mMapView.getMap();

Functions implemented by each part
1.

// Initialize the context information before using the SDK components and pass in the ApplicationContext // note that this method must be implemented before the setContentView method (getApplicationContext ());

Binds the life cycle of a map to the activity.

@ Override protected void onStart () {super. onStart (); mBaiduMap. setMyLocationEnabled (true); if (! MLocationClient. isStarted () mLocationClient. start () ;}@ Override protected void onStop () {// TODO Auto-generated method stub super. onStop () ;}@ Override protected void onDestroy () {// TODO Auto-generated method stub super. onDestroy (); mMapView. onDestroy () ;}@ Override protected void onResume () {super. onResume (); // execute mMapView when onResume is executed in the activity. onResume () to implement mMapView for map lifecycle management. onResume () ;}@ Override protected void onPause () {super. onPause (); // execute mMapView when onPause is executed in activity. onPause () enables mMapView for map lifecycle management. onPause ();}

Implement option click conversion map Mode

@ Override public boolean onCreateOptionsMenu (Menu menu) {// TODO Auto-generated method stub menu. add (0, 1, 0, "normal map"); menu. add (0, 2, 0, "satellite map"); menu. add (0, 3, 0, "real-time traffic (off)"); return super. onCreateOptionsMenu (menu );}

Set option click events

@ Override public boolean onOptionsItemSelected (MenuItem item) {switch (item. getItemId () {case 1: // common map mBaiduMap. setMapType (BaiduMap. MAP_TYPE_NORMAL); break; case 2: // satellite map mBaiduMap. setMapType (BaiduMap. MAP_TYPE_SATELLITE); break; case 3: if (mBaiduMap. isTrafficEnabled () {mBaiduMap. setTrafficEnabled (false); item. setTitle ("real-time traffic (off)");} else {mBaiduMap. setTrafficEnabled (true); item. setTitle ("real-time traffic (on)");} break;} return super. onOptionsItemSelected (item );}

Add an identifier to a map

// Define Maker coordinate point LatLng point = new LatLng (39.963175, 116.400244); // construct the Marker icon BitmapDescriptor bitmap = BitmapDescriptorFactory. fromResource (R. drawable. ic_launcher); // construct a MarkerOption to add Marker OverlayOptions option = new MarkerOptions () to the map (). position (point ). icon (bitmap); // Add a Marker to the map and display the mBaiduMap. addOverlay (option );

Set gps Positioning
Classes to be used
LocationClient
BDLocationListener

(1)

MyLocationListener myLocationListener = new MyLocationListener (); mLocationClient = new LocationClient (getApplicationContext (); // declare the LocationClient class mLocationClient. registerLocationListener (myLocationListener); // register a listener

(2) Use LocationClientOption to set positioning attributes

LocationClientOption option = new LocationClientOption (); option. setLocationMode (LocationMode. hight_Accuracy); // sets the positioning mode option. setCoorType ("bd09ll"); // The return result is Baidu longitude and latitude. The default value is gcj02 option. setScanSpan (1000); // set the interval between initiating a request for locating to 5000 ms option. setIsNeedAddress (true); // The returned positioning result contains the address information option. setNeedDeviceDirect (true); // The returned positioning result contains the direction of the mobile phone head to mLocationClient. setLocOption (option );

(3) Listener implementation

Private class MyLocationListener implements BDLocationListener {@ Override public void onid elocation (BDLocation location) {// TODO Auto-generated method stub MyLocationData data = new MyLocationData. builder () // set the longitude and latitude. accuracy (location. getRadius ()). latitude (location. getLatitude ()). longpolling (location. getlongpolling ()). build (); mBaiduMap. setMyLocationData (data); // identify the first entry and locate the current location if (isFirstIn) {LatLng latLng = new LatLng (location. getLatitude (), location. getlongpolling (); MapStatusUpdate msu = MapStatusUpdateFactory. newLatLng (latLng); mBaiduMap. animateMapStatus (msu); Toast. makeText (getApplicationContext (), location. getAddrStr (), 3000 ). show (); isFirstIn = false ;}}}

Permissions to be added

<! -- This permission is used for network positioning --> <uses-permission android: name = "android. permission. ACCESS_COARSE_LOCATION"> </uses-permission> <! -- This permission is used to access GPS positioning --> <uses-permission android: name = "android. permission. ACCESS_FINE_LOCATION"> </uses-permission> <! -- Used to access Wi-Fi network information. wifi information is used to locate the network --> <uses-permission android: name = "android. permission. ACCESS_WIFI_STATE"> </uses-permission> <! -- Obtains carrier information, which is used to support interfaces related to carrier information --> <uses-permission android: name = "android. permission. ACCESS_NETWORK_STATE"> </uses-permission> <! -- This permission is used to obtain the permission for wifi, And wifi information is used to locate the network --> <uses-permission android: name = "android. permission. CHANGE_WIFI_STATE "> </uses-permission> <! -- Used to read the current status of the mobile phone --> <uses-permission android: name = "android. permission. READ_PHONE_STATE"> </uses-permission> <! -- Write extended storage and write data to the expansion card for writing offline positioning data --> <uses-permission android: name = "android. permission. WRITE_EXTERNAL_STORAGE "> </uses-permission> <! -- Access the network and access the INTERNET to locate the network --> <uses-permission android: name = "android. permission. INTERNET"/> <! -- SD card read permission, users write offline positioning data --> <uses-permission android: name = "android. permission. MOUNT_UNMOUNT_FILESYSTEMS"> </uses-permission> <! -- Allow applications to read low-level system log files --> <uses-permission android: name = "android. permission. READ_LOGS "> </uses-permission> <uses-permission android: name =" android. permission. GET_ACCOUNTS "/> <uses-permission android: name =" android. permission. USE_CREDENTIALS "/> <uses-permission android: name =" android. permission. MANAGE_ACCOUNTS "/> <uses-permission android: name =" android. permission. AUTHENTICATE_ACCOUNTS "/> <uses-permission android: name =" android. permission. ACCESS_NETWORK_STATE "/> <uses-permission android: name =" android. permission. INTERNET "/> <uses-permission android: name =" com. android. launcher. permission. READ_SETTINGS "/> <uses-permission android: name =" android. permission. CHANGE_WIFI_STATE "/> <uses-permission android: name =" android. permission. ACCESS_WIFI_STATE "/> <uses-permission android: name =" android. permission. READ_PHONE_STATE "/> <uses-permission android: name =" android. permission. WRITE_EXTERNAL_STORAGE "/> <uses-permission android: name =" android. permission. BROADCAST_STICKY "/> <uses-permission android: name =" android. permission. WRITE_SETTINGS "/>

The

 <meta-data            android:name="com.baidu.lbsapi.API_KEY"            android:value="OSzBVaOV08hT2o7yNBIq4NFS" />        <service android:name="com.baidu.location.f" android:enabled="true" android:process=":remote">    </service>