android利用GPS和高德地图获取定位案例
一、main.xml
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <EditText android:id="@+id/text_location" android:layout_width="fill_parent" android:layout_height="wrap_content" android:editable="false" /> </LinearLayout>
二、activity
package com.mytest.huilife; import java.util.Date; import com.amap.api.location.AMapLocation; import com.amap.api.location.AMapLocationListener; import com.amap.api.location.LocationManagerProxy; import com.amap.api.location.LocationProviderProxy; import android.app.Activity; import android.app.AlertDialog; import android.app.ProgressDialog; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.location.Criteria; import android.location.GpsStatus; import android.location.Location; import android.location.LocationListener; import android.location.LocationManager; import android.location.LocationProvider; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.provider.Settings; import android.util.Log; import android.widget.EditText; import android.widget.Toast; public class LocationActivity extends Activity { private static final String LOG_TAG = "LocationActivity"; private LocationManager locationManager; private ProgressDialog progressDialog; private EditText textLoaction; private String loactionSoureFrom; // 定位数据来自哪，GPS，还是网络 // private TimerTask timerTask; // private Timer timer; private Handler handler = new Handler() { public void handleMessage(android.os.Message msg) { if(progressDialog!=null){ progressDialog.dismiss(); } //更新界面位置信息 updateTextLoaction(); }; }; @Override protected void onDestroy() { // TODO Auto-generated method stub super.onDestroy(); if (locationManager != null && locationListener != null) { locationManager.removeUpdates(locationListener); } // if (timer != null) { // timer.cancel(); // } } @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.location); textLoaction = (EditText) this.findViewById(R.id.text_location); if (NetWorkUtil.isNetAvailable(this) == false) { Toast.makeText(this, "请打开网络连接", Toast.LENGTH_SHORT).show(); return; } if (NetWorkUtil.isGPSAvailable(this)) { // 从GPS获取位置信息 getLocationFromGPS(); } else { // 如果GPS不可用 new AlertDialog.Builder(this).setTitle("你是否要打开GPS？") .setPositiveButton("是", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // 让用户打开GPS Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS); intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); startActivityForResult(intent, 0); } }).setNegativeButton("否", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { // 从网络获取位置信息 getLocationFromNetWork(); } }).show(); } } private double latitude; // 纬度 private double longitude; // 经度 private double altitude; // 海拔 private String getLocationLastTime; private void updateTextLoaction() { // Log.v(LOG_TAG,"updateTextLoaction:"+"经度:"+longitude+",纬度:"+latitude+",海拔:"+altitude); textLoaction.setText("定位数据来自:" + loactionSoureFrom + ",\n经度:" + longitude + "\n纬度:" + latitude + ",\n海拔:" + altitude + ",获取时间:" + getLocationLastTime); } /** * 采用高德地图，执行网络定位，并在定位中显示等待 */ private void getLocationFromNetWork() { progressDialog = new ProgressDialog(LocationActivity.this); progressDialog.setMessage("正在定位中..."); progressDialog.setCanceledOnTouchOutside(false);// 点击外部，进度提示框不会消失 progressDialog.show(); // 初始化高德地图定位 initAmapLocation(); } /** * 初始化高德定位 */ private void initAmapLocation() { LocationManagerProxy locationManagerProxy = LocationManagerProxy.getInstance(this); locationManagerProxy.setGpsEnable(false); locationManagerProxy.requestLocationData(LocationProviderProxy.AMapNetwork, 3 * 1000, 10, new AMapLocationListener() { @Override public void onStatusChanged(String provider, int status, Bundle extras) { } @Override public void onProviderEnabled(String provider) { } @Override public void onProviderDisabled(String provider) { } @Override public void onLocationChanged(Location location) { } @Override public void onLocationChanged(AMapLocation amapLocation) { if (amapLocation != null && amapLocation.getAMapException().getErrorCode() == 0) { // 定位成功回调信息，设置相关消息 latitude = amapLocation.getLatitude(); longitude = amapLocation.getLongitude(); altitude = amapLocation.getAltitude(); Date date = new Date(amapLocation.getTime()); String dateStr = String.format("%d:%d %d", date.getHours(), date.getMinutes(), date.getSeconds()); getLocationLastTime = dateStr; // Log.v(LOG_TAG, "(amap)位置发生改变," + "时间:" + dateStr + "经度：" + amapLocation.getLongitude() // + "纬度：" + amapLocation.getLatitude() + "海拔：" + amapLocation.getAltitude()); if (progressDialog != null) { progressDialog.dismiss(); } loactionSoureFrom = "amap"; // 发送消息，更新界面位置信息 handler.sendEmptyMessage(0); } } }); } /** * 从GPS获取位置信息 */ private void getLocationFromGPS() { progressDialog = new ProgressDialog(LocationActivity.this); progressDialog.setMessage("正在定位中..."); progressDialog.setCanceledOnTouchOutside(false);// 点击外部，进度提示框不会消失 progressDialog.show(); // 获取manager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE); String bestProvider = locationManager.getBestProvider(getCriteria(), true); Location location = locationManager.getLastKnownLocation(bestProvider); if (location != null) { Date date = new Date(location.getTime()); String dateStr = String.format("%d:%d %d", date.getHours(), date.getMinutes(), date.getSeconds()); getLocationLastTime = dateStr; longitude = location.getLongitude(); // 纬度 latitude = location.getLatitude(); // 经度 altitude = location.getAltitude(); // 海拔 if (progressDialog != null) { progressDialog.dismiss(); } loactionSoureFrom = "GPS"; // 更新界面位置信息 updateTextLoaction(); } else { // Log.i(LOG_TAG, "从GPS获取数据为空"); if (progressDialog != null) { progressDialog.dismiss(); } loactionSoureFrom = "GPS"; // Toast.makeText(this, "从GPS获取位置信息，得到数据为空", // Toast.LENGTH_SHORT).show(); new AlertDialog.Builder(this).setTitle("GPS数据为空，改从网络？") .setPositiveButton("是", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { getLocationFromNetWork(); } }).setNegativeButton("否", null).show(); } locationManager.addGpsStatusListener(gpsListener); // 绑定监听，有4个参数 // 参数1，设备：有GPS_PROVIDER和NETWORK_PROVIDER两种 // 参数2，位置信息更新周期，单位毫秒 // 参数3，位置变化最小距离：当位置距离变化超过此值时，将更新位置信息 // 参数4，监听 // 备注：参数2和3，如果参数3不为0，则以参数3为准；参数3为0，则通过时间来定时更新；两者为0，则随时刷新 // 3秒更新一次，或最小位移变化超过1米更新一次； // 注意：此处更新准确度非常低，推荐在service里面启动一个Thread，在run中sleep(10000);然后执行handler.sendMessage(),更新位置 locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 3000, 1, locationListener); } /** * 设置查询条件 * * @return */ private Criteria getCriteria() { // 创建查询条件 Criteria criteria = new Criteria(); // 设置定位精确度 Criteria.ACCURACY_COARSE比较粗略，Criteria.ACCURACY_FINE则比较精细 criteria.setAccuracy(Criteria.ACCURACY_FINE); // 设置是否要求速度 criteria.setSpeedRequired(false); // 设置是否允许运营商收费 criteria.setCostAllowed(false); // 设置是否需要方位信息 criteria.setBearingRequired(false); // 设置是否需要海拔信息 criteria.setAltitudeRequired(false); // 设置对电源的需求 criteria.setPowerRequirement(Criteria.POWER_LOW); return criteria; } /** * 位置监听 */ private LocationListener locationListener = new LocationListener() { @Override public void onStatusChanged(String provider, int status, Bundle extras) { switch (status) { // GPS状态为可见时 case LocationProvider.AVAILABLE: // Log.i(LOG_TAG, "当前GPS状态为可见状态"); break; // GPS状态为服务区外时 case LocationProvider.OUT_OF_SERVICE: // Log.i(LOG_TAG, "当前GPS状态为服务区外状态"); break; // GPS状态为暂停服务时 case LocationProvider.TEMPORARILY_UNAVAILABLE: // Log.i(LOG_TAG, "当前GPS状态为暂停服务状态"); break; } } @Override public void onProviderEnabled(String provider) { // TODO Auto-generated method stub } @Override public void onProviderDisabled(String provider) { // TODO Auto-generated method stub } @Override public void onLocationChanged(Location location) { Date date = new Date(location.getTime()); String dateStr = String.format("%d:%d %d", date.getHours(), date.getMinutes(), date.getSeconds()); getLocationLastTime = dateStr; longitude = location.getLongitude(); // 纬度 latitude = location.getLatitude(); // 经度 altitude = location.getAltitude(); // 海拔 // Log.v(LOG_TAG, "GPS位置发生改变," + "时间:" + dateStr + "经度：" + // location.getLongitude() + "纬度：" // + location.getLatitude() + "海拔：" + location.getAltitude()); if (progressDialog != null) { progressDialog.dismiss(); } loactionSoureFrom = "GPS"; // 发送消息，更新界面位置信息 handler.sendEmptyMessage(0); } }; /** * GPS状态监听 */ GpsStatus.Listener gpsListener = new GpsStatus.Listener() { @Override public void onGpsStatusChanged(int event) { switch (event) { case GpsStatus.GPS_EVENT_FIRST_FIX: // Log.v(LOG_TAG, "第一次定位"); break; case GpsStatus.GPS_EVENT_SATELLITE_STATUS: // Log.v(LOG_TAG, "卫星状态发生改变"); break; case GpsStatus.GPS_EVENT_STARTED: // Log.v(LOG_TAG, "启动定位"); break; case GpsStatus.GPS_EVENT_STOPPED: // Log.v(LOG_TAG, "结束定位"); break; } } }; }
三、NetWorkUtil
package com.mytest.huilife; import android.content.Context; import android.location.LocationManager; import android.net.ConnectivityManager; import android.net.NetworkInfo; public class NetWorkUtil { /** * 判断网络是否可用 * @param context * @return */ public static boolean isNetAvailable(Context context) { ConnectivityManager connManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo netWorkInfo = connManager.getActiveNetworkInfo(); if(netWorkInfo==null || !netWorkInfo.isAvailable()){ return false; } return true; } /** * 判断GPS是否可用 */ public static boolean isGPSAvailable(Context context) { LocationManager locationManager = (LocationManager)context.getSystemService(Context.LOCATION_SERVICE); boolean gps = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER); boolean net = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER); if(gps || net){ return true; } return false; } }
四、AndroidMainfest.xml
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.mytest.huilife" android:versionCode="2" android:versionName="2" > <uses-sdk android:minSdkVersion="14" android:targetSdkVersion="21" /> <application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <meta-data android:name="com.amap.api.v2.apikey" android:value="？？？？？？在此输入高德地图的key" /> <activity android:name=".LocationActivity" android:label="@string/app_name" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <activity android:name=".GPSActivity" > </activity> <activity android:name=".LocationActivity" > </activity> </application> <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> <uses-permission android:name="android.permission.READ_PHONE_STATE" /> <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" /> <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" /> <uses-permission android:name="android.permission.CHANGE_CONFIGURATION" /> </manifest>
五、小结
1、导入高德地图的jar包（Android_Location_V1.2.0）。
2、用了一个手机卡的旧手机测试，GPS虽然打开，但获取数据为空，改用从网络获取。
3、上述引用，注意在androidmainfest.xml中配置高德地图的相关meta、权限等。
（具体配置参考官网:http://lbs.amap.com/api/android-location-sdk/guide/project/）
