在安卓开发中，使用腾讯地图实现定位与导航功能

由于本人使用的是android studio，所以就以android studio为例。

一、申请密钥、添加依赖以及添加权限

1、在工程顶级 build.gradle 文件中加入：

maven{url "https://oss.sonatype.org/content/groups/public"
}

2、module build.gradle 文件中添加依赖库名称：

implementation 'com.tencent.map:tencent-map-vector-sdk:4.3.5'

3、申请开发秘钥，具体可参考开发文档，此处就不演示。
https://lbs.qq.com/android_v1/guide-project-setup.html

4、在AndroidManifest.xml中添加权限。

 <uses-permission android:name="android.permission.INTERNET"/><!--检查网络可用性--><uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/><!-- 访问WiFi状态 --><uses-permission android:name="android.permission.ACCESS_WIFI_STATE" /><!--需要外部存储写权限用于保存地图缓存--><uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/><!--获取 device id 辨别设备--><uses-permission android:name="android.permission.READ_PHONE_STATE"/>

5、在application中输入开发秘钥。

<applicationandroid:allowBackup="true"android:icon="@mipmap/ic_launcher"android:label="@string/app_name"android:roundIcon="@mipmap/ic_launcher_round"android:supportsRtl="true"android:theme="@style/AppTheme"><activity android:name=".activity.MainActivity"><intent-filter><action android:name="android.intent.action.MAIN"/><category android:name="android.intent.category.LAUNCHER"/></intent-filter></activity><meta-data android:name="TencentMapSDK" android:value="你的开发秘钥" /></application>

以下是定位图片效果展示：

二、代码展示

1、单独实现定位功能。
创建一个MyMapActivity继承BaseActivity，并实现一些父类。
由于代码中有详细的注释，这里就不一一解释了。

public class MyMapActivity extends BaseActivity implements TencentLocationListener, LocationSource, TencentMapGestureListener {@BindView(R.id.mv)MapView mv;private TencentLocationManager mLocationManager;private TencentMap mTencentMap;private TencentLocationRequest mRequest;private OnLocationChangedListener mLocationChangedListener;//将经纬度定义为全局变量，方便导航功能使用//为了方便导航，此处经纬度我写固定的。可以视情况而定。private double mLatitude = 23.112159;  private double mLongitude = 113.329768;  private Location mLocation;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_my_map);ButterKnife.bind(this);initView();checkPermission();}//检测权限private void checkPermission() {if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {//申请权限ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_COARSE_LOCATION}, 222);//自定义的code}}private void initView() {mLocation = getLocation(this);mLocationManager = TencentLocationManager.getInstance(this);//创建定位请求mRequest = TencentLocationRequest.create();mTencentMap = mv.getMap();//地图上设置定位数据源mTencentMap.setLocationSource(this);//设置当前位置可见mTencentMap.setMyLocationEnabled(true);mTencentMap.addTencentMapGestureListener(this);mLocationManager.requestSingleFreshLocation(null, this, Looper.getMainLooper());}public Location getLocation(Context context) {LocationManager locMan = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);Location location = locMan.getLastKnownLocation(LocationManager.GPS_PROVIDER);if (location == null) {location = locMan.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);}return location;}/*** 腾讯定位SDK位置变化回调** @param tencentLocation* @param i* @param s*/@Overridepublic void onLocationChanged(TencentLocation tencentLocation, int i, String s) {BJLog.i("onLocationChanged:" + tencentLocation.getAddress() + " i:" + i + " s:" + s);if (i == TencentLocation.ERROR_OK && mLocationChangedListener != null) {Location location = new Location(tencentLocation.getProvider());//设置经纬度location.setLatitude(tencentLocation.getLatitude());location.setLongitude(tencentLocation.getLongitude());//设置精度，这个值会被设置为定位点上表示精度的圆形半径location.setAccuracy(tencentLocation.getAccuracy());//设置定位标的旋转角度，注意 tencentLocation.getBearing() 只有在 gps 时才有可能获取location.setBearing((float) tencentLocation.getBearing());//将位置信息返回给地图mLocationChangedListener.onLocationChanged(location);}}@Overridepublic void onStatusUpdate(String s, int i, String s1) {}@Overridepublic void activate(OnLocationChangedListener onLocationChangedListener) {//这里我们将地图返回的位置监听保存为当前 Activity 的成员变量mLocationChangedListener = onLocationChangedListener;}@Overridepublic void deactivate() {//当不需要展示定位点时，需要停止定位并释放相关资源mLocationManager.removeUpdates(this);mLocationManager = null;mLocationManager = null;mLocationManager = null;}@Overridepublic boolean onDoubleTap(float v, float v1) {return false;}@Overridepublic boolean onSingleTap(float v, float v1) {return false;}@Overridepublic boolean onFling(float v, float v1) {return false;}@Overridepublic boolean onScroll(float v, float v1) {return false;}@Overridepublic boolean onLongPress(float v, float v1) {return false;}@Overridepublic boolean onDown(float v, float v1) {return false;}@Overridepublic boolean onUp(float v, float v1) {return false;}@Overridepublic void onMapStable() {}//创建地图视图之后，需要跟应用绑定生命周期，以保障地图在应用的不同生命周期中，能够正确地处理显示和刷新逻辑@Overrideprotected void onStart() {super.onStart();mv.onStart();}@Overrideprotected void onResume() {super.onResume();mv.onResume();}@Overrideprotected void onStop() {super.onStop();mv.onStop();}@Overrideprotected void onDestroy() {super.onDestroy();mv.onDestroy();}
}

2、若想要实现导航功能，就拿我们经常使用的百度地图、高德地图、腾讯地图而言吧。
首先自定义一个Dialog并设置为全局变量。（这并不是唯一的方法，仅供参考）

private Dialog mMapDialog;

注：个人建议把自定义Dialog单独写出来，不要放在Activity中，在此为了方便阅读，就放一起了。

3、定义一个initShareDialog()方法，弹出选择地图的窗口。

private void initShareDialog() {// 可以使用这个： ll_dynamicDetail_bottommMapDialog = new Dialog(this, R.style.dialog_bottom_full);mMapDialog.setCanceledOnTouchOutside(true); //手指触碰到外界取消mMapDialog.setCancelable(true);             //可取消 为trueWindow window = mMapDialog.getWindow();      // 得到dialog的窗体window.setGravity(Gravity.BOTTOM);window.setWindowAnimations(R.style.share_animation);View shareView = View.inflate(this, R.layout.dialog_maps, null); //获取布局视图TextView tvBaidu = shareView.findViewById(R.id.tv_baidu);TextView tvTengxun = shareView.findViewById(R.id.tv_tengxun);TextView tvGaode = shareView.findViewById(R.id.tv_gaode);TextView tvCancel = shareView.findViewById(R.id.tv_cancel);Intent intent = new Intent();intent.setAction(Intent.ACTION_VIEW);intent.addCategory(Intent.CATEGORY_DEFAULT);//百度地图if (isAvilible(this, "com.baidu.BaiduMap")) {tvBaidu.setVisibility(View.VISIBLE);}//高德地图if (isAvilible(this, "com.autonavi.minimap")) {tvGaode.setVisibility(View.VISIBLE);}//腾讯地图if (isAvilible(this, "com.tencent.map")) {tvTengxun.setVisibility(View.VISIBLE);}tvBaidu.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {try {Intent intent_baidu = Intent.getIntent("intent://map/direction?" +"destination=latlng:" + mLatitude + "," + mLongitude +"|name:我的终点" +        //终点"&mode=driving&" +          //导航路线方式"&src=appname#Intent;scheme=bdapp;package=com.baidu.BaiduMap;end");startActivity(intent_baidu); //启动调用mMapDialog.dismiss();} catch (Exception e) {e.printStackTrace();}}});tvGaode.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {//将功能Scheme以URI的方式传入dataUri uri = Uri.parse("androidamap://navi?sourceApplication=appname&poiname=fangheng&lat=" + mLatitude + "&lon=" + mLongitude + "&dev=1&style=2");intent.setData(uri);//启动该页面即可startActivity(intent);mMapDialog.dismiss();}});tvTengxun.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {//将功能Scheme以URI的方式传入dataUri uri = Uri.parse("qqmap://map/routeplan?type=drive&to=我的终点&tocoord=" + mLatitude + "," + mLongitude);intent.setData(uri);startActivity(intent);mMapDialog.dismiss();}});tvCancel.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {mMapDialog.dismiss();}});//若手机没有百度地图、高德地图、腾讯地图，则提示用户安装。if (!isAvilible(this,"com.tencent.map")&& !isAvilible(this, "com.baidu.BaiduMap")&& !isAvilible(this, "com.autonavi.minimap")){Toast.makeText(this, "手机没有地图软件，请安装后重试！", Toast.LENGTH_SHORT).show();return;}WindowManager.LayoutParams params = new WindowManager.LayoutParams(WindowManager.LayoutParams.MATCH_PARENT,WindowManager.LayoutParams.WRAP_CONTENT);window.setContentView(shareView, params);window.setLayout(WindowManager.LayoutParams.MATCH_PARENT, WindowManager.LayoutParams.WRAP_CONTENT);//设置横向全屏mMapDialog.show();}

4、在定义一个isAvilible()方法，判断手机中是否有某个程序的包。

private boolean isAvilible(Context context, String packageName) {//获取packagemanagerfinal PackageManager packageManager = context.getPackageManager();//获取所有已安装程序的包信息List<PackageInfo> packageInfos = packageManager.getInstalledPackages(0);//用于存储所有已安装程序的包名List<String> packageNames = new ArrayList<>();//从pinfo中将包名字逐一取出，压入pName list中if (packageInfos != null) {for (int i = 0; i < packageInfos.size(); i++) {String packName = packageInfos.get(i).packageName;packageNames.add(packName);}}//判断packageNames中是否有目标程序的包名，有TRUE，没有FALSEreturn packageNames.contains(packageName);}

5、在initView()中加入以下代码，点击定位表便可实现。

     //SDK版本4.3.5新增内置定位标点击回调监听mTencentMap.setMyLocationClickListener(new TencentMap.OnMyLocationClickListener() {@Overridepublic boolean onMyLocationClicked(LatLng latLng) {initShareDialog();return true;}});

下面是导航实现效果。

6、在style文件中样式：

 <!-- 对话框样式 --><style name="dialog_bottom_full" parent="android:style/Theme.Dialog"><item name="android:windowBackground">@android:color/transparent</item><item name="android:windowNoTitle">true</item><item name="android:windowIsFloating">true</item><item name="android:windowContentOverlay">@null</item><item name="android:scrollHorizontally">true</item></style>

 <!--弹出框动画--><style name="share_animation" parent="android:Animation"><item name="android:windowEnterAnimation">@anim/dialog_enter</item><item name="android:windowExitAnimation">@anim/dialog_exit</item></style>

7、Dialog的样子：dialog_maps

<?xml version="1.0" encoding="utf-8"?>
<LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="vertical"android:background="@drawable/round_share_bg"android:paddingLeft="15dp"android:paddingRight="15dp"><TextViewandroid:id="@+id/tv_baidu"android:layout_width="match_parent"android:layout_height="50dp"android:gravity="center"android:text="百度地图"android:textColor="@color/color333"android:textSize="18sp"android:visibility="gone"/><TextViewandroid:id="@+id/tv_gaode"android:layout_width="match_parent"android:layout_height="50dp"android:gravity="center"android:text="高德地图"android:textColor="@color/color333"android:textSize="18sp"android:visibility="gone"/><TextViewandroid:id="@+id/tv_tengxun"android:layout_width="match_parent"android:layout_height="50dp"android:gravity="center"android:text="腾讯地图"android:textColor="@color/color333"android:textSize="18sp"android:visibility="gone"/><TextViewandroid:id="@+id/tv_cancel"android:layout_width="match_parent"android:layout_height="50dp"android:gravity="center"android:text="取消"android:textColor="@color/dialog_submit_color"android:textSize="18sp"/></LinearLayout>

以上就是定位与导航功能的实现，若有讲得不好的地方，还请大佬们指出改正。