android - 单击android项目中的按钮后如何在地图上获取当前位置？

Question

我是android新手，我需要你的帮助。我有两个输入纬度和经度的编辑文本和一个按钮搜索。我的问题是单击按钮搜索后如何在地图上显示位置？请在此处提供一些示例代码。

Answer 1

据我了解，您希望将 MapView 设置为用户放入 EditText 的坐标。

float latitude = new Float(lat.getText().toString()); //Check for errors here
float longitude = new Float(long.getText().toString()); //Check for errors here

//Create a GeoPoint, which takes lat/long in microdegrees:
GeoPoint point = new GeoPoint((int)(lat * 1E6), (int)(lng * 1E6));

//Use MapController to move your mapview
MapController controller = yourMapView.getController();
controller.animateTo(point);
//Or, without the scroll animation:
//controller.setCenter(point);

您可以在此处阅读有关 MapView 和 MapController 类的更多信息： https ://developers.google.com/maps/documentation/android/reference/com/google/android/maps/MapController https://developers.google.com/maps /documentation/android/reference/com/google/android/maps/MapView

Answer 2

Criteria criteria = new Criteria();
criteria.setAccuracy(Criteria.ACCURACY_COARSE);
criteria.setPowerRequirement(Criteria.POWER_LOW);
LocationManager locManager =
    (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
if(locManager.getBestProvider(criteria,true) != null){
    Location myLocation= locManager.getLastKnownLocation(locManager.getBestProvider(criteria, true));
    String latitude = Double.toString(myLocation.getLatitude());
    String longitude = Double.toString(myLocation.getLongitude());
    String altitude = Double.toString(myLocation.getAltitude());
}