[置顶] 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<Address> 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);
	}