google map根据地址获取经纬度

最近在做google map 根据地址获取经纬度的时候使用到Geocoder类

Java 代码复制内容到剪贴板

/**
* 将地址转为经纬度
* @param address
* @return
*/
public GeoPoint getGeoPointByAddress(String address) {
GeoPoint geoPoint = null;
if (address != "") {
Geocoder myGeocoder = new Geocoder(RegisterAccountActivity.this);
List<Address> addressList = null;
try {
addressList = myGeocoder.getFromLocationName(address, 1);
if (!addressList.isEmpty()) {
Address tempAddress = addressList.get(0);
double myLatitude = tempAddress.getLatitude() * 1E6;
double myLongitude = tempAddress.getLongitude() * 1E6;
geoPoint = new GeoPoint((int) myLatitude, (int) myLongitude);
}
} catch (Exception e) {
e.printStackTrace();
}
}
return geoPoint;
}

这段代码对2.2和2.3系统居然不起作用，报java.io.IOException: Service not Available的错误，换用2.1系统却可以。

估计这是个bug。于是在网上找到另一种解决方法：

Java 代码复制内容到剪贴板

public static JSONObject getLocationInfo(String address) {

HttpGet httpGet = new HttpGet(
"http://maps.g...ddress="
+ address + "ka&sensor=false");
HttpClient client = new DefaultHttpClient();
HttpResponse response;
StringBuilder stringBuilder = new StringBuilder();

try {
response = client.execute(httpGet);
HttpEntity entity = response.getEntity();
InputStream stream = entity.getContent();
int b;
while ((b = stream.read()) != -1) {
stringBuilder.append((char) b);
}
} catch (ClientProtocolException e) {
} catch (IOException e) {
}

JSONObject jsonObject = new JSONObject();
try {
jsonObject = new JSONObject(stringBuilder.toString());
} catch (JSONException e) {
e.printStackTrace();
}
return jsonObject;
}

public static GeoPoint getGeoPoint(JSONObject jsonObject) {
Double lon = new Double(0);
Double lat = new Double(0);
try {
lon = ((JSONArray) jsonObject.get("results")).getJSONObject(0)
.getJSONObject("geometry").getJSONObject("location")
.getDouble("lng");

lat = ((JSONArray) jsonObject.get("results")).getJSONObject(0)
.getJSONObject("geometry").getJSONObject("location")
.getDouble("lat");

} catch (JSONException e) {
e.printStackTrace();
}
return new GeoPoint((int) (lat * 1E6), (int) (lon * 1E6));
}

这样就解决了问题。