Android uses GPS Positioning

1. Code

Package android. test; <br/> Import Java. io. ioexception; <br/> Import Java. util. list; <br/> Import Java. util. locale; <br/> Import android. app. activity; <br/> Import android. content. context; <br/> Import android. location. address; <br/> Import android. location. criteria; <br/> Import android. location. geocoder; <br/> Import android. location. location; <br/> Import android. location. locationlistener; <br/> Import and Roid. location. locationmanager; <br/> Import android. OS. bundle; <br/> Import android. util. log; <br/> Import android. widget. textview; <br/> Import android. widget. toast; <br/> Import COM. google. android. maps. geopoint; <br/> public class main extends activity {<br/> private textview m_textview1; <br/>/** called when the activity is first created. */<br/> @ override <br/> Public void oncreate (bundle savedinstan Cestate) {<br/> super. oncreate (savedinstancestate); <br/> setcontentview (R. layout. main); <br/> m_textview1 = (textview) findviewbyid (R. id. mytextview1); <br/> locationmanager = (locationmanager) getsystemservice (context. location_service); <br/> Criteria c = new criteria (); <br/> C. setaccuracy (criteria. accuracy_coarse); <br/> C. setaltituderequired (true); <br/> C. setbearingrequired (true); <br /> C. setcostallowed (true); <br/> C. setpowerrequirement (criteria. power_medium); <br/> string strlocation = locationmanager. getbestprovider (C, false); <br/> locationmanager. requestlocationupdates (strlocation, 1000, 0, locationlistener); <br/>}< br/> private final locationlistener = new locationlistener () {<br/> Public void onlocationchanged (location) {// This function is triggered when the coordinates change. If the provider If it is passed to the same coordinates, it will not be triggered <br/> // log it when the location changes <br/> If (location! = NULL) {<br/> log. I ("Supermap", "location changed: Lat:" + location. getlatitude () + "LNG:" <br/> + location. getlongpolling (); <br/> // m_curgeopoint = getgeobylocation (location); <br/> // m_textview1.settext (getaddressbygeopoint (m_curgeopoint); <br/> // toast. maketext (main. this, <br/> // getaddressbygeopoint (m_curgeopoint), 100); <br/> string STR = "Supermap, location changed: Lat:" + location. get Latitude () + "LNG:" <br/> + location. getlongpolling (); <br/> m_textview1.settext (STR); <br/>}< br/> Public void onproviderdisabled (string provider) {<br/> // This function is triggered when the provider is disable. For example, if GPS is disabled, <br/>}< br/> Public void onproviderenabled (string provider) {<br/> // This function is triggered when the provider is enabled. For example, if GPS is enabled, <br/>}< br/> Public void onstatuschanged (string provider, int status, bundle extras) {<br/> // The provider's transition state is in This function is triggered when three statuses are available, temporarily unavailable, and no service are directly switched <br/>}< br/>}; <br/> private string getaddressbygeopoint (geopoint point) {<br/> string STR = ""; <br/> try {<br/> If (point! = NULL) {<br/> geocoder coder = new geocoder (main. this, locale. getdefault (); <br/> double dgeolatitude = (INT) Point. getlatitudee6 ()/1e6; <br/> double dgeolongdistance = (INT) Point. getlongitudee6 ()/1e6; <br/> List <address> addresses = coder. getfromlocation (dgeolatses, dgeolongitude, 1); <br/> stringbuilder sb = new stringbuilder (); <br/> If (addresses. size ()> 0) {<br/> address ADDR = addresses. get (0); <br/> for (INT I = 0; I <addresses. size (); ++ I) {<br/> Sb. append (ADDR. getaddressline (I )). append ("/N"); <br/>}< br/> Sb. append (ADDR. getlocality ()). append ("/N"); <br/> Sb. append (ADDR. getpostalcode ()). append ("/N"); <br/> Sb. append (ADDR. getcountryname ()). append ("/N"); <br/> STR = sb. tostring (); <br/>}< br/>} catch (ioexception e) {<br/> E. printstacktrace (); <br/>}< br/> return STR; <br/>}< br/> Private geopoint getgeobylocation (location) {<br/> geopoint point = NULL; <br/> If (location! = NULL) {<br/> double dgeolatitude = location. getlatitude () * 1e6; <br/> double dgeolongdistance = location. getlongpolling () * 1e6; <br/> point = new geopoint (INT) dgeolatitude, (INT) dgeolongpolling); <br/>}< br/> return point; <br/>}< br/>}

 

2. androidmanifest. xml

 

<? XML version = "1.0" encoding = "UTF-8"?> <Br/> <manifest xmlns: Android = "http://schemas.android.com/apk/res/android" <br/> package = "android. test "<br/> Android: versioncode =" 1 "<br/> Android: versionname =" 1.0 "> <br/> <uses-SDK Android: minsdkversion = "7"/> <br/> <application Android: icon = "@ drawable/icon" Android: label = "@ string/app_name"> <br/> <activity Android: Name = ". main "<br/> Android: Label =" @ string/app_name "> <br/> <intent-filter> <br/> <action Android: Name =" android. intent. action. main "/> <br/> <category Android: Name =" android. intent. category. launcher "/> <br/> </intent-filter> <br/> </activity> <br/> </Application> <br/> <uses-SDK Android: minsdkversion = "7"/> <br/> <uses-Permission Android: Name = "android. permission. access_fine_location "/> <br/> </manifest>