高德地图定位（简易版）

首先要有在官网下载的demo
首先导依赖

在当前module 中的build.grade 中添加

sourceSets {
        main {
            jniLibs.srcDirs = ['libs']
        }
    }

创建一个 名为 LocationUtil的类直接复制里面的代码

public class LocationUtil implements AMapLocationListener {
    private AMapLocationClient aMapLocationClient;
    private AMapLocationClientOption clientOption;
    private ILocationCallBack callBack;

    public void startLocate(Context context){
        aMapLocationClient = new AMapLocationClient(context);

        //设置监听回调
        aMapLocationClient.setLocationListener(this);

        //初始化定位参数
        clientOption = new AMapLocationClientOption();
        clientOption.setLocationMode(AMapLocationClientOption.AMapLocationMode.Battery_Saving);
        clientOption.setNeedAddress(true);
        clientOption.setOnceLocation(false);
        //设置是否强制刷新WIFI，默认为强制刷新
        clientOption.setWifiActiveScan(true);
        //设置是否允许模拟位置,默认为false，不允许模拟位置
        clientOption.setMockEnable(false);
        //设置定位间隔
        clientOption.setInterval(2000);
        aMapLocationClient.setLocationOption(clientOption);

        aMapLocationClient.startLocation();
    }

    //完成定位回调
    @Override
    public void onLocationChanged(AMapLocation aMapLocation) {
        if(aMapLocation != null){
            if(aMapLocation.getErrorCode() == 0){
                //定位成功完成回调
                String country = aMapLocation.getCountry();
                String province = aMapLocation.getProvince();
                String city = aMapLocation.getCity();
                String district = aMapLocation.getDistrict();
                String street = aMapLocation.getStreet();
                double lat = aMapLocation.getLatitude();
                double lgt = aMapLocation.getLongitude();

                callBack.callBack(country + province + city + district + street,lat,lgt,aMapLocation);
            }else{
                //显示错误信息ErrCode是错误码，errInfo是错误信息，详见错误码表。
                Log.e("AmapError", "location Error, ErrCode:"
                        + aMapLocation.getErrorCode() + ", errInfo:"
                        + aMapLocation.getErrorInfo());
            }
        }
    }

    /**
     * 自定义图标
     * @return
     */
    public MarkerOptions getMarkerOption(String str, double lat, double lgt){
        MarkerOptions markerOptions = new MarkerOptions();
        markerOptions.icon(BitmapDescriptorFactory.fromResource(R.mipmap.ic_launcher));
        markerOptions.position(new LatLng(lat,lgt));
        markerOptions.title(str);
        markerOptions.snippet("纬度:" + lat + "   经度:" + lgt);
        markerOptions.period(100);

        return markerOptions;
    }

    public interface ILocationCallBack{
        void callBack(String str,double lat,double lgt,AMapLocation aMapLocation);
    }

    public void setLocationCallBack(ILocationCallBack callBack){
        this.callBack = callBack;
    }
}

复制MainActivity 中的代码

public class MainActivity extends AppCompatActivity implements LocationSource{

    private MapView mapView;
    private AMap aMap;
    private LocationSource.OnLocationChangedListener mListener = null;//定位监听器
    private LocationUtil locationUtil;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mapView = (MapView) findViewById(R.id.MapView);
        mapView.onCreate(savedInstanceState);

        init();
    }

    private void init() {
        if(aMap == null){
            aMap = mapView.getMap();
        }

        setLocationCallBack();

        //设置定位监听
        aMap.setLocationSource(this);
        //设置缩放级别
        aMap.moveCamera(CameraUpdateFactory.zoomTo(15));
        //显示定位层并可触发，默认false
        aMap.setMyLocationEnabled(true);
    }

    private void setLocationCallBack(){
        locationUtil = new LocationUtil();
        locationUtil.setLocationCallBack(new LocationUtil.ILocationCallBack() {
            @Override
            public void callBack(String str,double lat,double lgt,AMapLocation aMapLocation) {

                //根据获取的经纬度，将地图移动到定位位置
                aMap.moveCamera(CameraUpdateFactory.changeLatLng(new LatLng(lat,lgt)));
                mListener.onLocationChanged(aMapLocation);
                //添加定位图标
                aMap.addMarker(locationUtil.getMarkerOption(str,lat,lgt));
            }
        });
    }

    //定位激活回调
    @Override
    public void activate(OnLocationChangedListener onLocationChangedListener) {
        mListener = onLocationChangedListener;

        locationUtil.startLocate(getApplicationContext());
    }

    @Override
    public void deactivate() {
        mListener = null;
    }

    @Override
    protected void onPause() {
        super.onPause();
        //暂停地图的绘制
        mapView.onPause();
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        //销毁地图
        mapView.onDestroy();
    }

    @Override
    protected void onResume() {
        super.onResume();
        //重新绘制加载地图
        mapView.onResume();
    }

    @Override
    public void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        mapView.onSaveInstanceState(outState);
    }
}

activity_main 中的代码

    <com.amap.api.maps.MapView
        android:id="@+id/MapView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"></com.amap.api.maps.MapView>

在清单文件中添加的权限

<!-- Normal Permissions 不需要运行时注册 -->
    <!-- 获取运营商信息，用于支持提供运营商信息相关的接口 -->
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <!-- 用于访问wifi网络信息，wifi信息会用于进行网络定位 -->
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <!-- 这个权限用于获取wifi的获取权限，wifi信息会用来进行网络定位 -->
    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
    <uses-permission
        android:name="android.permission.CHANGE_CONFIGURATION"
        tools:ignore="ProtectedPermissions" />

    <!-- 请求网络 -->
    <uses-permission android:name="android.permission.INTERNET" />

    <!-- 不是SDK需要的权限，是示例中的后台唤醒定位需要的权限 -->
    <uses-permission android:name="android.permission.WAKE_LOCK" />

    <!-- 需要运行时注册的权限 -->
    <!-- 用于进行网络定位 -->
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <!-- 用于访问GPS定位 -->
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <!-- 用于提高GPS定位速度 -->
    <uses-permission android:name="android.permission.ACCESS_LOCATION_EXTRA_COMMANDS" />
    <!-- 写入扩展存储，向扩展卡写入数据，用于写入缓存定位数据 -->
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <!-- 读取缓存数据 -->
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

    <!-- 用于读取手机当前的状态 -->
    <uses-permission android:name="android.permission.READ_PHONE_STATE" />

    <!-- 更改设置 -->
    <uses-permission
        android:name="android.permission.WRITE_SETTINGS"
        tools:ignore="ProtectedPermissions" />

    <!-- 3.2.0版本增加 -->
    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
    <!-- 3.2.0版本增加 -->
    <uses-permission android:name="android.permission.BLUETOOTH" />
    <!--不用复制application中的本来就有的代码  -->
    <application
        android: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=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <!-- 设置key -->
        <meta-data
            android:name="com.amap.api.v2.apikey"
            android:value="xxxxxx" />
        <!-- 定位需要的服务 -->
        <service android:name="com.amap.api.location.APSService"></service>
    </application>

效果就出来了

如果没有小三角的话就开启一下 GPS 然后运行