公司有个需求就是要随着屏幕的改变而加载附近的商户信息.
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地图中介绍如何显示一个基本地图
- */
- 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