Android--高德地圖fragment中定位

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

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

</LinearLayout>

public class wirtepipeFragement extends BaseFragment implements AMapLocationListener, LocationSource {
    /**
     * 標誌位，標誌已經初始化完成
     */
    private boolean isPrepared;
    /**
     * 是否已被加載過一次，第二次就不再去請求數據了
     */
    private boolean mHasLoadedOnce;
    private AMap mMap;
    private MapView mapView;
    private OnLocationChangedListener mListener;
    private AMapLocationClient mLocationClient;
    private AMapLocationClientOption mLocationOption;
    private LatLng myLocation;
    private static wirtepipeFragement fragment;

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        if (mView == null) {
            // 需要inflate一個佈局文件 填充Fragment
            mView = inflater.inflate(R.layout.fragment_writepipe, container, false);
            mapView = mView.findViewById(R.id.map);
            mapView.onCreate(savedInstanceState);
            initView();
            isPrepared = true;
            //實現懶加載
            lazyLoad();
        }
        //緩存的mView需要判斷是否已經被加過parent， 如果有parent需要從parent刪除，要不然會發生這個mView已經有parent的錯誤。
        ViewGroup parent = (ViewGroup) mView.getParent();
        if (parent != null) {
            parent.removeView(mView);
        }

        return mView;
    }
    /**
     * 初始化控件
     */
    private void initView() {

        initMap();
        setUpLocationStyle();
    }

    @Override
    public void lazyLoad() {
        if (!isPrepared || !isVisible || mHasLoadedOnce) {
            return;
        }
        //填充各控件的數據
        mHasLoadedOnce = true;
    }
    public static wirtepipeFragement newInstance() {
        if(fragment == null){
            synchronized(MapFragment.class){
                if(fragment==null){
                    fragment = new wirtepipeFragement();
                }
            }
        }
        return fragment;
    }

    private void initMap() {
        if (mMap == null) {
            mMap = mapView.getMap();
        }

        mMap.setLocationSource(this);// 設置定位監聽
        mMap.setMyLocationEnabled(true);
        UiSettings uiSettings = mMap.getUiSettings();
        uiSettings.setZoomControlsEnabled(true);

        CameraUpdate cameraUpdate = CameraUpdateFactory.zoomTo(15);
        mMap.moveCamera(cameraUpdate);
    }

    private void setUpLocationStyle() {
        // 自定義系統定位藍點
//        MyLocationStyle myLocationStyle = new MyLocationStyle();
//        myLocationStyle.myLocationIcon(BitmapDescriptorFactory.fromResource(R.drawable.gps_point));
//        myLocationStyle.strokeWidth(0);
//        myLocationStyle.radiusFillColor(Color.TRANSPARENT);
//        mMap.setMyLocationStyle(myLocationStyle);

        MyLocationStyle myLocationStyle;
        myLocationStyle = new MyLocationStyle();//初始化定位藍點樣式類
        myLocationStyle.myLocationType(MyLocationStyle.LOCATION_TYPE_LOCATION_ROTATE);
        // 連續定位、且將視角移動到地圖中心點，定位點依照設備方向旋轉，並且會跟隨設備移動。（1秒1次定位）如果不設置myLocationType，默認也會執行此種模式。
        myLocationStyle.interval(2000); //設置連續定位模式下的定位間隔，只在連續定位模式下生效，單次定位模式下不會生效。單位爲毫秒。
        mMap.setMyLocationStyle(myLocationStyle);//設置定位藍點的Style
        mMap.getUiSettings().setMyLocationButtonEnabled(true);//設置默認定位按鈕是否顯示，非必需設置。
        mMap.setMyLocationEnabled(true);// 設置爲true表示啓動顯示定位藍點，false表示隱藏定位藍點並不進行定位，默認是false。

    }

    @Override
    public void onResume() {
        super.onResume();
        Log.d("zh", "onResume進來了");
        mapView.onResume();
    }

    @Override
    public void onPause() {
        super.onPause();
        Log.d("zh", mapView + ":onPause");
        mapView.onPause();
    }

    @Override
    public void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        Log.d("zh", mapView + ":onSaveInstanceState");
        mapView.onSaveInstanceState(outState);
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        Log.d("zh", mapView + ":onDestroy進來了");
        mLocationOption = null;
        mLocationClient = null;
        mMap = null;
        mapView.onDestroy();

    }

    @Override
    public void onLocationChanged(AMapLocation aMapLocation) {
        Log.d("zh", "onLocationChanged進來了");
        Log.d("zh", aMapLocation + "");
        Log.d("zh", aMapLocation.getErrorCode() + "");
        if (aMapLocation != null && aMapLocation.getErrorCode() == 0) {
            if (mListener != null) {
                mListener.onLocationChanged(aMapLocation);// 顯示系統小藍點
            }
            //獲取當前經緯度座標
            String address = aMapLocation.getAddress();
            Log.d("zh",address);
            myLocation = new LatLng(aMapLocation.getLatitude(), aMapLocation.getLongitude());
            //fixedMarker();
        }
    }

    @Override
    public void activate(OnLocationChangedListener onLocationChangedListener) {
        Log.d("zh", "activate進來了");
        mListener = onLocationChangedListener;
        if (mLocationClient == null) {
            mLocationClient = new AMapLocationClient(getActivity());
            mLocationOption = new AMapLocationClientOption();
            //設置定位監聽
            mLocationClient.setLocationListener(this);
            //設置爲高精度定位模式
            mLocationOption.setLocationMode(AMapLocationClientOption.AMapLocationMode.Hight_Accuracy);
            //設置定位參數
            mLocationOption.setOnceLocation(true);//只定位一次
            mLocationOption.setHttpTimeOut(2000);
            mLocationClient.setLocationOption(mLocationOption);
            // 此方法爲每隔固定時間會發起一次定位請求，爲了減少電量消耗或網絡流量消耗，
            // 注意設置合適的定位時間的間隔（最小間隔支持爲2000ms），並且在合適時間調用stopLocation()方法來取消定位請求
            // 在定位結束後，在合適的生命週期調用onDestroy()方法
            // 在單次定位情況下，定位無論成功與否，都無需調用stopLocation()方法移除請求，定位sdk內部會移除
            mLocationClient.startLocation();//開始定位
        }
    }

    @Override
    public void deactivate() {
        Log.d("zh", "deactivate我是什麼時候進來的");
        mListener = null;
        if (mLocationClient != null) {
            mLocationClient.stopLocation();
            mLocationClient.onDestroy();
        }
        mLocationClient = null;
    }

}