Android中集成高德地图SDK实现地图定位和导航功能（二）

我们接着上一篇文章开始继续实现android中集成高德地图的SDK实现地图定位，搜索，导航的功能

如何让地图在手机上实现呢？

1.配置AndroidManifest 中的权限申请

可以参考官方文档

  <!--允许访问网络，必选权限--><uses-permission android:name="android.permission.INTERNET" /><!--允许获取精确位置，实时导航为必选--><uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /><!--允许获取粗略位置，实时导航为必选--><uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /><!--允许获取设备和运营商信息，用于问题排查和网络定位（无gps情况下的定位），若需网络定位功能则必选--><uses-permission android:name="android.permission.READ_PHONE_STATE" /><!--允许获取网络状态，用于网络定位（无gps情况下的定位），若需网络定位功能则必选--><uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /><!--允许获取wifi网络信息，用于网络定位（无gps情况下的定位），若需网络定位功能则必选--><uses-permission android:name="android.permission.ACCESS_WIFI_STATE" /><!--允许获取wifi状态改变，用于网络定位（无gps情况下的定位），若需网络定位功能则必选--><uses-permission android:name="android.permission.CHANGE_WIFI_STATE" /><!--后台获取位置信息，若需后台定位或持续导航则必选--><uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION" /><!--用于申请调用A-GPS模块,卫星定位加速--><uses-permission android:name="android.permission.ACCESS_LOCATION_EXTRA_COMMANDS" /><!--允许写入扩展存储，用于写入缓存定位数据--><uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /><!--用于用户链接蓝牙时，在导航组件页面的蓝牙连接提醒，建立链接后开发者可选用蓝牙通道进行tts播报--><uses-permission android:name="android.permission.BLUETOOTH" /><!--用与导航状态中保持屏幕常亮--><uses-permission android:name="android.permission.WAKE_LOCK"/><!--允许写设备缓存，用于问题排查--><uses-permission android:name="android.permission.WRITE_SETTINGS" /><!--允许读设备等信息，用于问题排查--><uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

android6.0以后需要动态申请权限这里我就不做详细解释了

设置高德地图的key

在androidMainfest文件的appliation 标签中添加之前在高的开发者平台上的key，代码如下

  <meta-dataandroid:name="com.amap.api.v2.apikey"android:value="这个地方就是你之前申请的key" />

我的key是ba63b…

初始化地图控件

首先要先新创建一个承载地图的Activiy，然后初始化MapView

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"tools:context=".activity.GaodeMapActivity"android:orientation="vertical"><com.amap.api.maps.MapViewandroid:id="@+id/gaode_map"android:layout_width="match_parent"android:layout_height="match_parent"tools:layout_editor_absoluteX="16dp"tools:layout_editor_absoluteY="39dp"></com.amap.api.maps.MapView></LinearLayout>

然后再Activity中初始化地图空，这边需要了解到Activity生命周期和这个地图绑定到一起

public class GaodeMapActivity extends AppCompatActivity {private static final String TAG = "GaodeMapActivity";private MapView mapView;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_gaode_map);// 这一步操作就设置高德地图中的隐私合规，不然可能会出现地图无法正确加载的问题MapsInitializer.updatePrivacyShow(this,true,true);MapsInitializer.updatePrivacyAgree(this,true);//初始化地图控件mapView = (MapView) findViewById(R.id.gaode_map);//这个地方需要捕获下异常，不然会出现编译不过的情况try {mLocationClient = new AMapLocationClient(GaodeMapActivity.this);}catch (Exception e) {Log.e(TAG, e.getMessage());}mapView.onCreate(savedInstanceState);if (aMap == null) {//展示地图aMap = mapView.getMap();Log.i(TAG,"展示地图");}@Overrideprotected void onDestroy() {super.onDestroy();mapView.onDestroy();}@Overrideprotected void onResume() {super.onResume();mapView.onResume();}@Overrideprotected void onPause() {super.onPause();mapView.onPause();}@Overridepublic void onSaveInstanceState(@NonNull Bundle outState, @NonNull PersistableBundle outPersistentState) {super.onSaveInstanceState(outState, outPersistentState);//在activity保存时，同时也保存地图mapView.onSaveInstanceState(outState);}

效果如上图所示，这就完成了第一步地图的展示

2.定位蓝点

参考官方文档
完整的GaodeActivity的代码如下因为是一个demo，所以代码写的比较潦草，多多担待

 private static final String TAG = "GaodeMapActivity";private MapView mapView;private AMap aMap = null;private double lat;private double lon;public AMapLocationClient mLocationClient = null;public AMapLocationClientOption mLocationOption = null;private Button btn_search;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_gaode_map);btn_search = findViewById(R.id.btn_search);//这地方就是下面要讲的搜索导航功能btn_search.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View view) {Intent intent = new Intent(GaodeMapActivity.this, SearchActivity.class);startActivity(intent);}});MapsInitializer.updatePrivacyShow(this,true,true);MapsInitializer.updatePrivacyAgree(this,true);//初始化地图控件mapView = (MapView) findViewById(R.id.gaode_map);try {mLocationClient = new AMapLocationClient(GaodeMapActivity.this);}catch (Exception e) {Log.e(TAG, e.getMessage());}//设置定位回调监听mLocationClient.setLocationListener(mLocationListener);mapView.onCreate(savedInstanceState);if (aMap == null) {//展示地图aMap = mapView.getMap();Log.i(TAG,"展示地图");}MyLocationStyle myLocationStyle;myLocationStyle = new MyLocationStyle();myLocationStyle.myLocationType(MyLocationStyle.LOCATION_TYPE_LOCATION_ROTATE); //持续定位//设置连续定位模式下定位间隔myLocationStyle.interval(2000);myLocationStyle.strokeWidth(20f);aMap.setMyLocationStyle(myLocationStyle);//设置定位蓝点的Style
//aMap.getUiSettings().setMyLocationButtonEnabled(true);设置默认定位按钮是否显示，非必需设置。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。myLocationStyle.myLocationType(MyLocationStyle.LOCATION_TYPE_LOCATION_ROTATE);myLocationStyle.showMyLocation(true);}public AMapLocationListener mLocationListener = new AMapLocationListener() {@Overridepublic void onLocationChanged(AMapLocation amapLocation) {if (amapLocation != null) {if (amapLocation.getErrorCode() == 0) {//定位成功回调信息，设置相关消息amapLocation.getLocationType();//获取当前定位结果来源，如网络定位结果，详见定位类型表amapLocation.getLatitude();//获取纬度amapLocation.getLongitude();//获取经度amapLocation.getAccuracy();//获取精度信息SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");Date date = new Date(amapLocation.getTime());df.format(date);//定位时间amapLocation.getAddress();//地址，如果option中设置isNeedAddress为false，则没有此结果，网络定位结果中会有地址信息，GPS定位不返回地址信息。amapLocation.getCountry();//国家信息amapLocation.getProvince();//省信息amapLocation.getCity();//城市信息amapLocation.getDistrict();//城区信息amapLocation.getStreet();//街道信息amapLocation.getStreetNum();//街道门牌号信息amapLocation.getCityCode();//城市编码amapLocation.getAdCode();//地区编码amapLocation.getAoiName();//获取当前定位点的AOI信息lat = amapLocation.getLatitude();lon = amapLocation.getLongitude();Log.v("pcw","lat : "+lat+" lon : "+lon);// 设置当前地图显示为当前位置aMap.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(lat, lon), 15));MarkerOptions markerOptions = new MarkerOptions();markerOptions.position(new LatLng(lat, lon));markerOptions.title("当前位置");markerOptions.visible(true);BitmapDescriptor bitmapDescriptor = BitmapDescriptorFactory.fromBitmap(BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher_background));markerOptions.icon(bitmapDescriptor);aMap.addMarker(markerOptions);} else {//显示错误信息ErrCode是错误码，errInfo是错误信息，详见错误码表。Toast.makeText(GaodeMapActivity.this,amapLocation.getErrorCode() + ", errInfo:"+ amapLocation.getErrorInfo(), Toast.LENGTH_SHORT).show();}}}};@Overrideprotected void onDestroy() {super.onDestroy();mapView.onDestroy();}@Overrideprotected void onResume() {super.onResume();mapView.onResume();}@Overrideprotected void onPause() {super.onPause();mapView.onPause();}@Overridepublic void onSaveInstanceState(@NonNull Bundle outState, @NonNull PersistableBundle outPersistentState) {super.onSaveInstanceState(outState, outPersistentState);//在activity保存时，同时也保存地图mapView.onSaveInstanceState(outState);}

实现后的效果如下

3.实现搜索功能

1.首先我们要创建一个搜索的Activity

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"tools:context=".activity.SearchActivity"android:orientation="vertical"><EditTextandroid:id="@+id/search_edit"android:layout_width="match_parent"android:layout_height="wrap_content"/><androidx.recyclerview.widget.RecyclerViewandroid:id="@+id/search_rv"android:layout_width="match_parent"android:layout_height="match_parent"app:layout_constraintBottom_toBottomOf="parent"app:layout_constraintTop_toBottomOf="@+id/search_edit"app:layout_constraintVertical_bias="1.0"tools:layout_editor_absoluteX="-51dp"/>
</LinearLayout>

搜索item 的布局如下

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="wrap_content"android:padding="18dp"android:orientation="vertical"><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="城市"android:textSize="18sp"android:id="@+id/search_adapter_text"/></LinearLayout>

3.要有一个Adapter 来给Recyclerview展示数据

public class RvAdapter extends RecyclerView.Adapter<RvAdapter.ViewHolder> implements View.OnClickListener {private final ArrayList<Tip> list;private final Context context;private final  RecyclerView rv;private OnItemClickListener  mOnItemClickListener;public RvAdapter(ArrayList<Tip> list, Context context, RecyclerView rv) {this.list = list;this.context = context;this.rv = rv;}@Overridepublic void onClick(View view) {int position = rv.getChildAdapterPosition(view);//程序执行到此，会去执行具体实现的onItemClick()方法if (mOnItemClickListener != null) {mOnItemClickListener.onItemClick(rv, view, position, list.get(position));Log.i("TAG", "onClick: "+position);}}public interface  OnItemClickListener{void onItemClick(RecyclerView recyclerView,View view, int position,Tip data);}public void setmOnItemClickListener(OnItemClickListener  clickListener) {this.mOnItemClickListener = clickListener;}public void setData(List<Tip> list) {if (list != null) {this.list.clear();this.list.addAll(list);notifyDataSetChanged();Log.i("TAG", "setData: "+ list);}}@Overridepublic RvAdapter.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {//View view = LayoutInflater.from(context).inflate(R.layout.search_item, parent ,false);View view = View.inflate(context, R.layout.search_item, null);view.setOnClickListener(this);return new ViewHolder(view);}@Overridepublic void onBindViewHolder(@NonNull ViewHolder holder, int position) {Tip tip = list.get(position);holder.textView.setText(tip.getName());Log.i("TAG", "onBindViewHolder:  getName= "+tip.getName());}@Overridepublic int getItemCount() {return list.size();}static class ViewHolder extends RecyclerView.ViewHolder{private TextView textView;public ViewHolder(@NonNull View itemView) {super(itemView);textView = itemView.findViewById(R.id.search_adapter_text);}}

4.下面就是SearchActivty 的代码

public class SearchActivity extends AppCompatActivity implements Inputtips.InputtipsListener, TextWatcher,RvAdapter.OnItemClickListener {private RvAdapter rvAdapter;private Inputtips inputtips;private AMapNavi aMapNavi;private EditText editText;private RecyclerView recyclerView;private ArrayList<Tip> list = new ArrayList<>();@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_search);editText = findViewById(R.id.search_edit);editText.addTextChangedListener(this);recyclerView = (RecyclerView) findViewById(R.id.search_rv);LinearLayoutManager layoutManager = new LinearLayoutManager(SearchActivity.this, RecyclerView.VERTICAL, false);recyclerView.setLayoutManager(layoutManager);rvAdapter = new RvAdapter(list,SearchActivity.this,recyclerView);rvAdapter.setmOnItemClickListener(this);recyclerView.setAdapter(rvAdapter);inputtips = new Inputtips(this,(InputtipsQuery) null);inputtips.setInputtipsListener(this);}@Overridepublic void onGetInputtips(List<Tip> list, int i) {Log.i("Tag","onGetInputtips data = "+list);rvAdapter.setData(list);}@Overridepublic void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {}@Overridepublic void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {InputtipsQuery inputtipsQuery = new InputtipsQuery(String.valueOf(charSequence),null);inputtipsQuery.setCityLimit(true);inputtips.setQuery(inputtipsQuery);inputtips.requestInputtipsAsyn();}@Overridepublic void afterTextChanged(Editable editable) {}@Overridepublic void onItemClick(RecyclerView parent, View view, int postion, Tip data) {}

这就完成了搜索功能，效果如下图

4.导航功能

官方文档参考
1.我们需要通过AmapNaviPage来启动，他是一个单例模式

        //导航参数对象（起点，途径，终点，导航方式）DRIVER是导航方式（驾驶，步行...当前为驾驶）ROUTE会计算路程选择AmapNaviParams params = new AmapNaviParams(null, null, poi, AmapNaviType.DRIVER, AmapPageType.ROUTE);//传递上下文和导航参数AmapNaviPage.getInstance().showRouteActivity(getApplicationContext(), params, null);

2.声明定位 service 组件需在 AndroidManifest.xml 中声明定位 service 组件。请在application标签中声明service 组件，添加如下代码：

<service android:name="com.amap.api.location.APSService"/>

3.还要再AndroidMainfest 中声明导航组件的Activity

<activityandroid:name="com.amap.api.navi.AmapRouteActivity"android:theme="@android:style/Theme.NoTitleBar"android:configChanges="orientation|keyboardHidden|screenSize|navigation" />

然后附上完整的SearchActivity的代码

public class SearchActivity extends AppCompatActivity implements Inputtips.InputtipsListener, TextWatcher,RvAdapter.OnItemClickListener {private RvAdapter rvAdapter;private Inputtips inputtips;private AMapNavi aMapNavi;private EditText editText;private RecyclerView recyclerView;private ArrayList<Tip> list = new ArrayList<>();@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_search);editText = findViewById(R.id.search_edit);editText.addTextChangedListener(this);recyclerView = (RecyclerView) findViewById(R.id.search_rv);LinearLayoutManager layoutManager = new LinearLayoutManager(SearchActivity.this, RecyclerView.VERTICAL, false);recyclerView.setLayoutManager(layoutManager);rvAdapter = new RvAdapter(list,SearchActivity.this,recyclerView);rvAdapter.setmOnItemClickListener(this);recyclerView.setAdapter(rvAdapter);inputtips = new Inputtips(this,(InputtipsQuery) null);inputtips.setInputtipsListener(this);//这是隐私合规接口，如果不加，可能出现地图加载不出来的问题NaviSetting.updatePrivacyShow(this, true, true);NaviSetting.updatePrivacyAgree(this, true);try {//这个地方也许捕获一下异常，不然编译不过去aMapNavi = AMapNavi.getInstance(this);}catch (Exception e){Log.e("TAG", e.getMessage());}if (aMapNavi!=null) {//设置内置语音播报aMapNavi.setUseInnerVoice(true, false);}}@Overridepublic void onGetInputtips(List<Tip> list, int i) {Log.i("Tag","onGetInputtips data = "+list);rvAdapter.setData(list);}@Overridepublic void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {}@Overridepublic void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {InputtipsQuery inputtipsQuery = new InputtipsQuery(String.valueOf(charSequence),null);inputtipsQuery.setCityLimit(true);inputtips.setQuery(inputtipsQuery);inputtips.requestInputtipsAsyn();}@Overridepublic void afterTextChanged(Editable editable) {}@Overridepublic void onItemClick(RecyclerView parent, View view, int postion, Tip data) {Log.i("TAG", "onItemClick:  点击了"+postion+"条");//得到点击的坐标LatLonPoint point = data.getPoint();Log.i("Tag", "坐标为"+point);//得到经纬度Poi poi = new Poi(data.getName(), new LatLng(point.getLatitude(), point.getLongitude()), data.getPoiID());//导航参数对象（起点，途径，终点，导航方式）DRIVER是导航方式（驾驶，步行...当前为驾驶）ROUTE会计算路程选择AmapNaviParams params = new AmapNaviParams(null, null, poi, AmapNaviType.DRIVER, AmapPageType.ROUTE);//传递上下文和导航参数AmapNaviPage.getInstance().showRouteActivity(getApplicationContext(), params, null);}
}

下面附上实现效果图

这个地方还要插一句需要在AndroidMainfest 的 applcation 中添加这样一段代码不然会点击开始导航会出现奔溃详情请参考为啥要添加下面的代码

android:allowNativeHeapPointerTagging="false"

这就是以上所有的内容，如有前期准备工作搞不定的请参考我的上一篇：Android中集成高德地图SDK实现地图定位和导航功能（一）