Android_百度地图基本用法3

Posted 2020-09-26 张兮兮

  1 /*
  2  *1.实现定位
  3  *2.引入方向传感器
  4  *3.自定义位置图标
  5  * */
  6 public class MainActivity extends Activity {
  7     MapView mapView;
  8     BaiduMap mBaiduMap;
  9     // 定位相关
 10     private LocationClient mLocationClient;
 11     private MyLocationListener mLocationListener;
 12     private boolean isFirst = true;
 13     // 记录经纬度
 14     private double mLatitude;
 15     private double mLongtitude;
 16     // 自定义位置图标
 17     private BitmapDescriptor mIconLocation;
 18     private MyOrientationListener myOrientationListener;
 19     private float mCurrentX;
 20 
 21     @Override
 22     protected void onCreate(Bundle savedInstanceState) {
 23         super.onCreate(savedInstanceState);
 24         SDKInitializer.initialize(getApplicationContext());
 25         requestWindowFeature(Window.FEATURE_NO_TITLE);
 26         setContentView(R.layout.fragment_main);
 27         mapView = (MapView) findViewById(R.id.bmapView);
 28         mBaiduMap = mapView.getMap();
 29         // 设置地图标尺500m
 30         MapStatusUpdate msu = MapStatusUpdateFactory.zoomTo(15.0f);
 31         mBaiduMap.setMapStatus(msu);
 32 
 33         // 初始化定位
 34 
 35         mLocationClient = new LocationClient(this);
 36         mLocationListener = new MyLocationListener();
 37         mLocationClient.registerLocationListener(mLocationListener);
 38         LocationClientOption option = new LocationClientOption();
 39         option.setCoorType("bd09ll");// 坐标类型
 40         option.setIsNeedAddress(true);
 41         option.setOpenGps(true);
 42         option.setScanSpan(1000);// 每隔1秒请求
 43         mLocationClient.setLocOption(option);
 44 
 45         // 初始化图标
 46         mIconLocation = BitmapDescriptorFactory
 47                 .fromResource(R.drawable.navi_map_gps_locked);
 48         myOrientationListener = new MyOrientationListener(this);
 49         myOrientationListener
 50                 .setOnOrientationListener(new OnOrientationListener() {
 51 
 52                     @Override
 53                     public void onOrientationChanged(float X) {
 54                         // TODO Auto-generated method stub
 55                         mCurrentX = X;
 56                     }
 57                 });
 58 
 59     }
 60 
 61     public void but(View view) {
 62         switch (view.getId()) {
 63 
 64         // 定位到我的位置
 65         case R.id.back:
 66             LatLng latLng = new LatLng(mLatitude, mLongtitude);
 67             MapStatusUpdate msu = MapStatusUpdateFactory.newLatLng(latLng);
 68             mBaiduMap.animateMapStatus(msu);
 69 
 70             break;
 71 
 72         }
 73 
 74     }
 75 
 76     @Override
 77     protected void onResume() {
 78 
 79         super.onResume();
 80         mapView.onResume();
 81     }
 82 
 83     @Override
 84     protected void onStart() {
 85 
 86         super.onStart();
 87         // 开启定位
 88         mBaiduMap.setMyLocationEnabled(true);
 89         if (!mLocationClient.isStarted()) {
 90             mLocationClient.start();
 91         }
 92         // 开启方向传感器
 93         myOrientationListener.start();
 94 
 95     }
 96 
 97     @Override
 98     protected void onStop() {
 99         // TODO Auto-generated method stub
100         super.onStop();
101         // 停止定位
102         mBaiduMap.setMyLocationEnabled(false);
103         mLocationClient.stop();
104         // 停止方向传感器
105         myOrientationListener.stop();
106 
107     }
108 
109     @Override
110     protected void onPause() {
111         // TODO Auto-generated method stub
112         super.onPause();
113         mapView.onPause();
114     }
115 
116     @Override
117     protected void onDestroy() {
118         // TODO Auto-generated method stub
119         super.onDestroy();
120         mapView.onDestroy();
121     }
122 
123     private class MyLocationListener implements BDLocationListener {
124 
125         @Override
126         public void onReceiveLocation(BDLocation arg0) {
127             // 精度、纬度
128             MyLocationData data = new MyLocationData.Builder()
129                     .direction(mCurrentX).accuracy(arg0.getRadius())
130                     .latitude(arg0.getLatitude())
131                     .longitude(arg0.getLongitude()).build();
132             mBaiduMap.setMyLocationData(data);
133 
134             // 设置自定义图标
135             MyLocationConfiguration config = new MyLocationConfiguration(
136                     com.baidu.mapapi.map.MyLocationConfiguration.LocationMode.NORMAL,
137                     true, mIconLocation);
138             mBaiduMap.setMyLocationConfigeration(config);
139 
140             // 更新经纬度
141             mLatitude = arg0.getLatitude();
142             mLongtitude = arg0.getLongitude();
143             // 第一次进入，设置用户当前位置
144             if (isFirst) {
145                 LatLng latLng = new LatLng(arg0.getLatitude(),
146                         arg0.getLongitude());
147                 MapStatusUpdate msu = MapStatusUpdateFactory.newLatLng(latLng);
148                 mBaiduMap.animateMapStatus(msu);
149                 isFirst = false;
150                 // 显示地址
151                 Toast.makeText(MainActivity.this, arg0.getAddrStr(), 0).show();
152 
153             }
154 
155         }
156 
157         @Override
158         public void onConnectHotSpotMessage(String arg0, int arg1) {
159             // TODO Auto-generated method stub
160 
161         }
162 
163     }
164 
165 }

 

 1 public class MyOrientationListener implements SensorEventListener {
 2     private SensorManager mSensorManager;
 3     private Context mContext;
 4     private Sensor mSensor;
 5 
 6     private float lastX;
 7 
 8     public MyOrientationListener(Context Context) {
 9         this.mContext = Context;
10     }
11   //开始监听
12     public void start() {
13         mSensorManager = (SensorManager) mContext
14                 .getSystemService(Context.SENSOR_SERVICE);
15         if (mSensorManager != null) {
16             // 获得方向传感器
17             mSensor = mSensorManager.getDefaultSensor(Sensor.TYPE_ORIENTATION);
18 
19         }
20         if (mSensor != null) {
21             mSensorManager.registerListener(this, mSensor,
22                     SensorManager.SENSOR_DELAY_UI);
23         }
24         else {
25             Toast.makeText(mContext, "没有方向传感器", 1).show();
26         }
27 
28     }
29 
30     public void stop() {
31         mSensorManager.unregisterListener(this);
32 
33     }
34 
35     @Override
36     public void onSensorChanged(SensorEvent event) {
37 
38         if (event.sensor.getType() == Sensor.TYPE_ORIENTATION) {
39             float x = event.values[SensorManager.DATA_X];
40             if (Math.abs(x - lastX) > 1.0) {
41                 if (mOnOrientationListener != null) {
42                     mOnOrientationListener.onOrientationChanged(x);
43                 }
44             }
45             lastX = x;
46         }
47     }
48 
49     @Override
50     public void onAccuracyChanged(Sensor sensor, int accuracy) {
51 
52     }
53 
54     private OnOrientationListener mOnOrientationListener;
55 
56     public void setOnOrientationListener(
57             OnOrientationListener mOnOrientationListener) {
58         this.mOnOrientationListener = mOnOrientationListener;
59     }
60 
61     public interface OnOrientationListener {
62         void onOrientationChanged(float X);
63     }
64 }