package cn.flightfeather.thirdapp.activity;
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import android.content.Intent;
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import android.graphics.Point;
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import android.location.Location;
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import android.os.Bundle;
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import android.support.v7.app.AppCompatActivity;
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import android.util.Log;
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import android.view.View;
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import android.widget.TextView;
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import android.widget.Toast;
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import com.amap.api.location.AMapLocation;
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import com.amap.api.location.AMapLocationClient;
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import com.amap.api.location.AMapLocationClientOption;
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import com.amap.api.location.AMapLocationListener;
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import com.amap.api.maps.AMap;
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import com.amap.api.maps.CameraUpdateFactory;
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import com.amap.api.maps.MapView;
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import com.amap.api.maps.model.BitmapDescriptor;
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import com.amap.api.maps.model.BitmapDescriptorFactory;
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import com.amap.api.maps.model.CameraPosition;
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import com.amap.api.maps.model.LatLng;
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import com.amap.api.maps.model.Marker;
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import com.amap.api.maps.model.MarkerOptions;
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import com.amap.api.maps.model.MyLocationStyle;
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import com.amap.api.services.core.LatLonPoint;
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import cn.flightfeather.thirdapp.R;
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public class MapActivity extends AppCompatActivity implements View.OnClickListener,AMap.OnMyLocationChangeListener {
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//定位
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//AMap是地图控制器对象
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private AMap aMap;
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//MapView时地图容器
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private MapView mapView;
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private TextView TV_start_location;
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private AMapLocationClient mLocationClient = null;
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private AMapLocationClientOption mLocationOption = null;
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private double latCurrent =0;
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private double lngCurrent =0;
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private boolean firstMove = true;
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.activity_map);
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initUI();
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initMap(savedInstanceState);
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initLocation();
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TV_start_location = (TextView) findViewById(R.id.TV_start_location);
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TV_start_location.setOnClickListener(new View.OnClickListener() {
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@Override
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public void onClick(View v) {
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if (latCurrent!=0&&lngCurrent!=0){
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Intent intent = new Intent();
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intent.putExtra("Latitude",latCurrent);
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intent.putExtra("Longitude",lngCurrent);
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setResult(RESULT_OK,intent);
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finish();
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}
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}
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});
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}
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//初始化地图
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private void initMap(Bundle savedInstanceState) {
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mapView.onCreate(savedInstanceState);
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if(aMap == null){
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aMap = mapView.getMap();
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aMap.setRenderFps(60);
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aMap.getUiSettings().setZoomControlsEnabled(false);
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aMap.getUiSettings().setScaleControlsEnabled(true);
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aMap.setOnCameraChangeListener(new AMap.OnCameraChangeListener() {
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@Override
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public void onCameraChange(CameraPosition cameraPosition) {
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latCurrent = cameraPosition.target.latitude;
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lngCurrent = cameraPosition.target.longitude;
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}
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@Override
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public void onCameraChangeFinish(CameraPosition cameraPosition) {
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latCurrent = cameraPosition.target.latitude;
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lngCurrent = cameraPosition.target.longitude;
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}
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});
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aMap.setOnMapLoadedListener(new AMap.OnMapLoadedListener() {
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@Override
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public void onMapLoaded() {
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addMarkerInScreenCenter(null);
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}
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});
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}
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}
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private void initUI(){
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mapView = (MapView) findViewById(R.id.MV_map);
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((TextView)findViewById(R.id.actionbar_title)).setText("定位");
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findViewById(R.id.img_left).setOnClickListener(this);
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findViewById(R.id.img_right).setVisibility(View.GONE);
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findViewById(R.id.spinner_topclass_task).setVisibility(View.GONE);
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}
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//在屏幕中心添加一个固定的marker
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private void addMarkerInScreenCenter(LatLng locationLatLng) {
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LatLng latLng = aMap.getCameraPosition().target;
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Point screenPosition = aMap.getProjection().toScreenLocation(latLng);
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Marker locationMarker = aMap.addMarker(new MarkerOptions()
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.anchor(0.5f, 0.5f)
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.icon(BitmapDescriptorFactory.fromResource(R.drawable.purple_pin)));
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//设置Marker在屏幕上,不跟随地图移动
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locationMarker.setPositionByPixels(screenPosition.x, screenPosition.y);
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locationMarker.setZIndex(1);
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}
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@Override
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public void onDestroy() {
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super.onDestroy();
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aMap.setMyLocationEnabled(false);
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mapView.onDestroy();
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}
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@Override
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public void onResume() {
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super.onResume();
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//在activity执行onResume时执行mMapView.onResume ()，重新绘制加载地图
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mapView.onResume();
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initLocation();
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}
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@Override
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public void onPause() {
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super.onPause();
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//在activity执行onPause时执行mMapView.onPause ()，暂停地图的绘制
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aMap.setMyLocationEnabled(false);
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mapView.onPause();
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}
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@Override
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public void onSaveInstanceState(Bundle outState) {
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super.onSaveInstanceState(outState);
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//在activity执行onSaveInstanceState时执行mMapView.onSaveInstanceState (outState)，保存地图当前的状态
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mapView.onSaveInstanceState(outState);
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}
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//初始化位置
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public void initLocation() {
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MyLocationStyle myLocationStyle;
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myLocationStyle = new MyLocationStyle();//初始化定位蓝点样式类myLocationStyle.myLocationType(MyLocationStyle.LOCATION_TYPE_LOCATION_ROTATE);//连续定位、且将视角移动到地图中心点，定位点依照设备方向旋转，并且会跟随设备移动。（1秒1次定位）如果不设置myLocationType，默认也会执行此种模式。
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// myLocationStyle.interval(2000); //设置连续定位模式下的定位间隔，只在连续定位模式下生效，单次定位模式下不会生效。单位为毫秒。
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myLocationStyle.showMyLocation(true);
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myLocationStyle.radiusFillColor(getResources().getColor(R.color.transparent));
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myLocationStyle.myLocationType(MyLocationStyle.LOCATION_TYPE_LOCATION_ROTATE_NO_CENTER);//连续定位、蓝点不会移动到地图中心点，定位点依照设备方向旋转，并且蓝点会跟随设备移动
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aMap.setMyLocationStyle(myLocationStyle);//设置定位蓝点的Style
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aMap.getUiSettings().setMyLocationButtonEnabled(false);//设置默认定位按钮是否显示，非必需设置。
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aMap.setMyLocationEnabled(true);// 设置为true表示启动显示定位蓝点，false表示隐藏定位蓝点并不进行定位，默认是false。
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aMap.setOnMyLocationChangeListener(this);
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}
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@Override
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public void onClick(View v) {
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switch (v.getId()){
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//返回键
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case R.id.img_left:
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this.finish();
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break;
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}
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}
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@Override
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public void onMyLocationChange(Location location) {
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if (location!=null&&firstMove){
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LatLng desLatLng = new LatLng(location.getLatitude(),location.getLongitude());
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aMap.moveCamera(CameraUpdateFactory.newLatLngZoom(desLatLng, 15f));
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firstMove = false;
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}
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}
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}
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