sso tar () 附近 初始 chan map 对象 protected
公司有个需求就是要随着屏幕的改变而载入附近的商户信息.
那么高德地图获取当前屏幕中心点的经纬度呢
核心方法: aMap.setOnCameraChangeListener(this);
实现接口:
@Override
public void onCameraChange(CameraPosition position) {
LatLng target = position.target;
System.out.println(target.latitude +"jinjin------"+ target.longitude);
}
- <span style="font-size:18px;">
- package com.amap.map2d.demo.basic; import android.app.Activity; import
- android.os.Bundle; import android.util.DisplayMetrics; import com.amap.api.location.core.GeoPoint;
- import com.amap.api.maps2d.AMap; import com.amap.api.maps2d.AMap.OnCameraChangeListener;
- import com.amap.api.maps2d.MapView; import com.amap.api.maps2d.model.CameraPosition;
- import com.amap.api.maps2d.model.LatLng; import com.amap.map2d.demo.R;
- /** * AMapV1地图中介绍怎样显示一个基本地图 */ public class BasicMapActivity extends Activity
- implements OnCameraChangeListener { private MapView mapView; private AMap
- aMap; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);
- setContentView(R.layout.basicmap_activity); mapView = (MapView) findViewById(R.id.map);
- mapView.onCreate(savedInstanceState);// 此方法必须重写 init(); aMap.setOnCameraChangeListener(this);
- } /** * 初始化AMap对象 */ private void init() { if (aMap == null) { aMap = mapView.getMap();
- } } /** * 方法必须重写 */ @Override protected void onResume() { super.onResume();
- mapView.onResume(); } /** * 方法必须重写 */ @Override protected void onPause()
- { super.onPause(); mapView.onPause(); } /** * 方法必须重写 */ @Override protected
- void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState);
- mapView.onSaveInstanceState(outState); } /** * 方法必须重写 */ @Override protected
- void onDestroy() { super.onDestroy(); mapView.onDestroy(); } @Override
- public void onCameraChange(CameraPosition position) { LatLng target = position.target;
- System.out.println(target.latitude + "jinjin------" + target.longitude);
- } @Override public void onCameraChangeFinish(CameraPosition position) {
- // TODO Auto-generated method stub } }
- </span>
结果展示
高德地图获取当前屏幕中心点的经纬度
来源: http://www.bubuko.com/infodetail-2223432.html