Android 通过经纬度获取地理位置信息

首先获取LocationManager、Location及Criteria

LocationManager locationManager;String context = Context.LOCATION_SERVICE;locationManager = (LocationManager) getSystemService(context);Criteria criteria = new Criteria();criteria.setAccuracy(Criteria.ACCURACY_FINE);criteria.setAltitudeRequired(false);criteria.setBearingRequired(false);criteria.setCostAllowed(false);criteria.setPowerRequirement(Criteria.POWER_LOW);String provider = locationManager.getBestProvider(criteria,true);Location location = locationManager.getLastKnownLocation(provider);

Criteria 类介绍：

Criteria是“精确度”的意思，Criteria类提供若干个查询条件：

（1） public void setAccuracy( int accuracy)

位置解析的精度，高或低

参数： Criteria. ACCURACY_FINE，精确模式；

Criteria. ACCURACY_COARSE，模糊模式；

（2） public void setAltitudeRequired(booleanaltitudeRequired)

是否提供海拔高度信息，是或否

（3） public void setBearingRequired(boolean bearingRequired)

是否提供方向信息，是或否

（4） public void setCostAllowed(boolean costAllowed)

是否允许运营商计费，是或否

（5） public void setPowerRequirement(int level)

电池消耗，无、低、中、高，参数 Criteria. NO_REQUIREMENT,Criteria. POWER_LOW,Criteria. POWER_MEDIUM, orCriteria. POWER_HIGH,

（6） public void setSpeedRequired(boolean speedRequired)

是否提供速度信息，是或否

获取地理信息函数：

private void updateWithNewLocation(Location location) {String coordinate;TextView loc = (TextView) findViewById(R.id.loc);String addressStr = "no address \n";if (location != null) {double lat = location.getLatitude();double lng = location.getLongitude();coordinate = "Latitude：" + lat + "\nLongitude：" + lng;double latitude = location.getLatitude();double longitude = location.getLongitude();Geocoder geocoder = new Geocoder(context, Locale.getDefault());try {List addresses = geocoder.getFromLocation(latitude,longitude, 1);StringBuilder sb = new StringBuilder();if (addresses.size() > 0) {Address address = addresses.get(0);for (int i = 0; i < address.getMaxAddressLineIndex(); i++) {sb.append(address.getAddressLine(i)).append("\n");}sb.append(address.getLocality()).append("\n");sb.append(address.getLocality()).append("\n");sb.append(address.getCountryName());addressStr = sb.toString();}} catch (IOException e) {e.printStackTrace();}} else {coordinate = "no coordinate!\n";}loc.setText("your coordinate：\n" + coordinate + "\n"+ addressStr);}

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