android移动应用，使用高德卫星地图绘制地块的形状，计算周长、面积

package com.hugetower.view.activity; import android.content.Context; import android.graphics.Color; import android.graphics.Point; import android.location.Location; import android.os.Bundle; import android.support.annotation.NonNull; import android.support.v4.content.ContextCompat; import android.support.v7.app.AppCompatActivity; import android.support.v7.view.ContextThemeWrapper; import android.support.v7.widget.PopupMenu; import android.util.Log; import android.view.MenuItem; import android.view.MotionEvent; import android.view.View; import android.view.Window; import android.widget.Button; import android.widget.ImageView; import android.widget.TextView; import com.amap.api.location.AMapLocation; import com.amap.api.maps.AMap; import com.amap.api.maps.AMapOptions; import com.amap.api.maps.AMapUtils; import com.amap.api.maps.CameraUpdateFactory; import com.amap.api.maps.TextureMapView; import com.amap.api.maps.UiSettings; import com.amap.api.maps.model.BitmapDescriptorFactory; import com.amap.api.maps.model.LatLng; import com.amap.api.maps.model.Marker; import com.amap.api.maps.model.MarkerOptions; import com.amap.api.maps.model.MyLocationStyle; import com.amap.api.maps.model.Polygon; import com.amap.api.maps.model.PolygonOptions; import com.amap.api.maps.model.Polyline; import com.amap.api.maps.model.PolylineOptions; import com.hugetower.R; import com.hugetower.common.utils.ToastUtils; import com.hugetower.model.MyLatLng; import com.hugetower.view.customview.dialog.BottomDialog; import java.math.BigDecimal; import java.util.ArrayList; import java.util.List; import butterknife.BindView; import butterknife.ButterKnife; import butterknife.OnClick; /** * AMapV2地图中介绍如何TextureMapView显示一个基本地图 */ public class AreaActivity extends AppCompatActivity implements AMap.OnMyLocationChangeListener { private TextureMapView mapView; private AMap aMap; //存放所有marker点标记 private List<MyLatLng> allLatLngs = new ArrayList<>(); //所有线段的点 private List<LatLng> allLatLngsWithLine = new ArrayList<>(); //所有marker点 private List<Marker> markers = new ArrayList<>(); //线的对象 private Polyline polyline; //多边形的对象 private Polygon polygon; //是否为封闭图形 private boolean isEnd = false; //矩形对象的配置 private PolygonOptions polygonOptions = new PolygonOptions(); //当前触摸的marker private Marker touchMark; //当前选中的点下标,相对于allLatLngs的 private int checkPos; //地图设置 UiSettings uiSettings; float zhouchang = 0; ///周长 private TextView mPerimeterTv; float mianji = 0; //面积 private TextView mAreaTv; @BindView(R.id.btnUpload) public Button btnUpload; private PolygonOptions polygonOptionsTest = new PolygonOptions(); // private void test() { // List<LatLng> latLngList = new ArrayList<>(); // latLngList.add(new LatLng(34.78303557017599, 117.30981432380786)); // latLngList.add(new LatLng(34.782878609909545, 117.310191174168)); // latLngList.add(new LatLng(34.7827216496431, 117.31056802452814)); // latLngList.add(new LatLng(34.782212213083994, 117.31075913191718)); // latLngList.add(new LatLng(34.78170277652489, 117.31095023930622)); // latLngList.add(new LatLng(34.78126658368178, 117.31032729627319)); // // latLngList.add(new LatLng(34.780830390838666, 117.30970435324015)); // latLngList.add(new LatLng(34.781445024879, 117.30956219616479)); // latLngList.add(new LatLng(34.78205965891933, 117.30942003908943)); // latLngList.add(new LatLng(34.782419292690165, 117.30933890226811)); // latLngList.add(new LatLng(34.782778926461006, 117.30925776544679)); // latLngList.add(new LatLng(34.782907248318494, 117.30953604462732)); // polygonOptionsTest.addAll(latLngList); // // int fillColor = Color.parseColor("#31000000"); // // // 设置多边形的边框颜色，32位 ARGB格式，默认为黑色 // // polygonOptionsTest.strokeWidth(4); // polygonOptionsTest.fillColor(fillColor); // polygonOptionsTest.strokeColor(getResources().getColor(R.color.red)); // // //创建多边形 // aMap.addPolygon(polygonOptionsTest); // } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); setContentView(R.layout.activity_main); ButterKnife.bind(this); //透明状态栏           // getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS); // getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION); getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR);// this.getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR); com.jaeger.library.StatusBarUtil.setColor(AreaActivity.this, ContextCompat.getColor(this, R.color.transparent), 0); mPerimeterTv = findViewById(R.id.mPerimeterTv); mAreaTv = findViewById(R.id.mAreaTv); /* * 设置离线地图存储目录，在下载离线地图或初始化地图设置; * 使用过程中可自行设置, 若自行设置了离线地图存储的路径， * 则需要在离线地图下载和使用地图页面都进行路径设置 * */ //Demo中为了其他界面可以使用下载的离线地图，使用默认位置存储，屏蔽了自定义设置 //  MapsInitializer.sdcardDir =OffLineMapUtils.getSdCacheDir(this); mapView = (TextureMapView) findViewById(R.id.map); mapView.onCreate(savedInstanceState);// 此方法必须重写 init(); // test(); } /** * 初始化AMap对象 */ private void init() { if (aMap == null) { aMap = mapView.getMap(); } // 如果要设置定位的默认状态，可以在此处进行设置 MyLocationStyle myLocationStyle = new MyLocationStyle(); aMap.setMyLocationStyle(myLocationStyle.myLocationType(MyLocationStyle.LOCATION_TYPE_LOCATE)); aMap.setMyLocationStyle(myLocationStyle); aMap.setMapType(AMap.MAP_TYPE_SATELLITE); aMap.getUiSettings().setMyLocationButtonEnabled(true);// 设置默认定位按钮是否显示 aMap.setMyLocationEnabled(true);// 设置为true表示显示定位层并可触发定位，false表示隐藏定位层并不可触发定位，默认是false //设置SDK 自带定位消息监听 aMap.setOnMyLocationChangeListener(this); //获取地图ui设置对象 uiSettings = aMap.getUiSettings(); uiSettings.setZoomPosition(AMapOptions.ZOOM_POSITION_RIGHT_CENTER); //地图点击监听 aMap.setOnMapClickListener(new AMap.OnMapClickListener() { @Override public void onMapClick(LatLng latLng) { if (!isEnd) { addMarker(latLng); } } }); //marker点击监听 aMap.setOnMarkerClickListener(new AMap.OnMarkerClickListener() { @Override public boolean onMarkerClick(Marker marker) { if (isEnd) { } else { if (markers.get(0).equals(marker)) { //封闭图形 isEnd = true; btnUpload.setVisibility(View.VISIBLE); //初始化多边形参数