Android studio之高德地图定位

① 注册高德地图的开发者，获取key

过程如图

②下载SDK，导入jar包

注意这里要导入高德地图定位SDK的jar包！！！

如果你先前导入过地图SDK（如2D，3D地图的SDK）再导入定位的SDK运行时就会报错，包名重复！

解决方法：删除所有jar包，只导入定位SDK的jar包

③配置AndroidManifes.xml文件

权限 + service + 密钥

<uses-permission android:name="android.permission.INTERNET" /><uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /><uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /><uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /><uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /><application    ......................    <service android:name="com.amap.api.location.APSService" />    <meta-data        android:name="com.amap.api.v2.apikey"        android:value="你先前申请的key" /></application>

④布局文件

<com.amap.api.maps2d.MapView

    android:id="@+id/map"

    android:layout_width="match_parent"

    android:layout_height="match_parent">

</com.amap.api.maps2d.MapView>

⑤MainActivity.java

结合了大佬代码和官方Demo

继承的PermissionsActivity为官方Demo的权限申请类

public class MainActivity extends PermissionsActivity implements LocationSource,AMapLocationListener {    //    private MapView mapView;    private AMap aMap;    //    private AMapLocationClient mLocationClient = null;//定位发起端    private AMapLocationClientOption mLocationClientOption = null;//定位参数    private OnLocationChangedListener mListener = null;//定位监听器    //    private boolean isFirstLoc = true;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        mapView = (MapView) findViewById(R.id.map);//找到地图控件        //在activity执行onCreate时执行mMapView.onCreate(savedInstanceState)，创建地图        mapView.onCreate(savedInstanceState);        aMap = mapView.getMap();//初始化地图控制器对象        //设置显示定位按钮 并且可以点击        UiSettings settings = aMap.getUiSettings();        //设置定位监听        aMap.setLocationSource(this);        //是否显示定位按钮        settings.setMyLocationButtonEnabled(true);        //是否可触发定位并显示定位层        aMap.setMyLocationEnabled(true);        //设置定位点的图标  默认为蓝色小点        MyLocationStyle myLocationStyle = new MyLocationStyle();        aMap.setMyLocationStyle(myLocationStyle);        //开始定位        initLoc();    }    //定位    private void initLoc() {        //初始化定位        mLocationClient = new AMapLocationClient(getApplicationContext());        //设置定位回调监听        mLocationClient.setLocationListener(this);        //初始化参数定位        mLocationClientOption = new AMapLocationClientOption();        //设置定位模式        mLocationClientOption.setLocationMode(AMapLocationClientOption.AMapLocationMode.Hight_Accuracy);        //设置是否返回地址信息，默认返回        mLocationClientOption.setNeedAddress(true);        //设置是否强制刷新WIFI，默认强制        mLocationClientOption.setWifiScan(true);        //设置定位间隔  ms        mLocationClientOption.setInterval(2000);        //给定客户端对象设置定位参数        mLocationClient.setLocationOption(mLocationClientOption);        //启动定位        mLocationClient.startLocation();    }    //定位回调函数 必须重写    public void onLocationChanged(AMapLocation aMapLocation) {        if (aMapLocation != null) {            if (aMapLocation.getErrorCode() == 0) {                //定位成功 回调信息 设置相关信息                aMapLocation.getLocationType();//获取定位结果来源                aMapLocation.getLatitude();//获取纬度                aMapLocation.getLongitude();//获取经度                aMapLocation.getAccuracy();//获取精确信息                SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");                Date date = new Date(aMapLocation.getTime());                df.format(date);                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                if (isFirstLoc) {                    //缩放级别                    aMap.moveCamera(CameraUpdateFactory.zoomTo(17));                    //将地图移动到定位点                    aMap.moveCamera(CameraUpdateFactory.changeLatLng(                            new LatLng(aMapLocation.getLatitude(), aMapLocation.getLongitude())));                    //点击定位按钮 能够将地图的中心点移动到定位点                    mListener.onLocationChanged(aMapLocation);                    isFirstLoc = false;                }            } 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());                Toast.makeText(getApplicationContext(), "定位失败", Toast.LENGTH_LONG).show();            }        }    }    //激活定位    @Override    public void activate(OnLocationChangedListener listener) {        mListener = listener;    }    //停止定位    @Override    public void deactivate() {        mListener = null;    }    /**     * 方法必须重写     */    @Override    protected void onResume() {        super.onResume();        mapView.onResume();    }    /**     * 方法必须重写     */    @Override    protected void onPause() {        super.onPause();        mapView.onPause();    }    /**     * 方法必须重写     */    @Override    protected void onSaveInstanceState(Bundle outState) {        super.onSaveInstanceState(outState);        mapView.onSaveInstanceState(outState);    }    /**     * 方法必须重写     */    @Override    protected void onDestroy() {        super.onDestroy();        mapView.onDestroy();    }}

⑥PermissionsActivity.java

新建一个java文件，或者可以直接从官方Demo中拷贝过来

........\AMap_Android_Demo\AMap_Android_API_Location_Demo\android_studio\AMapLocationDemo\app\src\main

\java\com\amap\location\demo\CheckPermissionsActivity.java

以下代码为精简过的CheckPermissionsActivity.java

public class PermissionsActivity extends Activity {    /**     * 需要进行检测的权限数组     */    protected String[] needPermissions = {

          //在这里添加你所需的权限

            Manifest.permission.ACCESS_FINE_LOCATION,            Manifest.permission.ACCESS_COARSE_LOCATION,    };    private static final int PERMISSON_REQUESTCODE = 0;    /**     * 判断是否需要检测，防止不停的弹框     */    private boolean isNeedCheck = true;    @Override    protected void onResume() {        super.onResume();        if (Build.VERSION.SDK_INT >= 23                && getApplicationInfo().targetSdkVersion >= 23) {            if (isNeedCheck) {                checkPermissions(needPermissions);            }        }    }    /**     *     * @param permissions     * @since 2.5.0     *     */    private void checkPermissions(String... permissions) {        try {            if (Build.VERSION.SDK_INT >= 23                    && getApplicationInfo().targetSdkVersion >= 23) {                List<String> needRequestPermissonList = findDeniedPermissions(permissions);                if (null != needRequestPermissonList                        && needRequestPermissonList.size() > 0) {                    String[] array = needRequestPermissonList.toArray(new String[needRequestPermissonList.size()]);                    Method method = getClass().getMethod("requestPermissions", new Class[]{String[].class,                            int.class});                    method.invoke(this, array, PERMISSON_REQUESTCODE);                }            }        } catch (Throwable e) {        }    }    /**     * 获取权限集中需要申请权限的列表     *     * @param permissions     * @return     * @since 2.5.0     *     */    private List<String> findDeniedPermissions(String[] permissions) {        List<String> needRequestPermissonList = new ArrayList<String>();        if (Build.VERSION.SDK_INT >= 23                && getApplicationInfo().targetSdkVersion >= 23){            try {                for (String perm : permissions) {                    Method checkSelfMethod = getClass().getMethod("checkSelfPermission", String.class);                    Method shouldShowRequestPermissionRationaleMethod = getClass().getMethod("shouldShowRequestPermissionRationale",                            String.class);                    if ((Integer)checkSelfMethod.invoke(this, perm) != PackageManager.PERMISSION_GRANTED                            || (Boolean)shouldShowRequestPermissionRationaleMethod.invoke(this, perm)) {                        needRequestPermissonList.add(perm);                    }                }            } catch (Throwable e) {            }        }        return needRequestPermissonList;    }    /**     * 检测是否所有的权限都已经授权     * @param grantResults     * @return     * @since 2.5.0     *     */    private boolean verifyPermissions(int[] grantResults) {        for (int result : grantResults) {            if (result != PackageManager.PERMISSION_GRANTED) {                return false;            }        }        return true;    }    @TargetApi(23)    public void onRequestPermissionsResult(int requestCode,                                           String[] permissions, int[] paramArrayOfInt) {        if (requestCode == PERMISSON_REQUESTCODE) {            if (!verifyPermissions(paramArrayOfInt)) {                isNeedCheck = false;            }        }    }}

效果如图