public class WebViewActivity extends Activity implements AMapLocationListener, LocationSource, AMap.OnMapTouchListener, AMap.OnMarkerClickListener {
    private AMap aMap;
    private MapView mapView;
    private AMapLocationClient mlocationClient;
    private AMapLocationClientOption mLocationOption;
    // private RadioGroup mGPSModeGroup;
    private RelativeLayout tab_back_button;
    MyLocationStyle myLocationStyle;
    OnLocationChangedListener mListeners;
    private boolean canMove = true;//变量控制拖动不返回中心点   

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    requestWindowFeature(Window.FEATURE_NO_TITLE);// 不显示程序的标题栏
    setContentView(R.layout.activity_map);
    mapView = (MapView) findViewById(R.id.map);
    mapView.onCreate(savedInstanceState);// 此方法必须重写
    if (aMap == null) {
        aMap = mapView.getMap();
    }
    aMap.setLocationSource(this);
    myLocationStyle = new MyLocationStyle();
    // myLocationStyle.interval(2000);
    myLocationStyle.myLocationIcon(null);
    //不显示Marker外的圆圈
    myLocationStyle.strokeColor(Color.argb(00, 255, 255, 255));
    myLocationStyle.radiusFillColor(Color.argb(00, 255, 255, 255));

    myLocationStyle.myLocationType(MyLocationStyle.LOCATION_TYPE_MAP_ROTATE);
    aMap.getUiSettings().setMyLocationButtonEnabled(true);
    aMap.setMyLocationStyle(myLocationStyle);
    aMap.setOnMapTouchListener(this);
    aMap.setMyLocationEnabled(true);

    aMap.setOnMarkerClickListener(this);

@Override
protected void onResume() {
    super.onResume();
    mapView.onResume();
}

@Override
protected void onPause() {
    super.onPause();
    mapView.onPause();
}

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

@Override
protected void onDestroy() {
    mapView.onDestroy();
    super.onDestroy();
}

@Override
public void onLocationChanged(AMapLocation aMapLocation) {
    Log.d("activateactivate", "onLocationChanged");
    //Log.d("activateactivate","aMapLocation.getErrorCode()="+aMapLocation.getErrorCode() );
    if (mListeners != null && aMapLocation != null) {
        if (aMapLocation != null
                && aMapLocation.getErrorCode() == 0) {
            // Log.d("activateactivate","onLocationChanged"+aMapLocation.getAddress()+",,,"+aMapLocation.getCity());
            if (canMove) {
                mListeners.onLocationChanged(aMapLocation);
                Log.d("activateactivate", aMapLocation.getPoiName());
            }
        } else {
            String errText = "定位失败," + aMapLocation.getErrorCode() + ": " + aMapLocation.getErrorInfo();
            Log.e("activateactivate", errText);
        }
    }
}

@Override
public void activate(OnLocationChangedListener onLocationChangedListener) {
    canMove = true;
    mListeners = onLocationChangedListener;
    Log.d("activateactivate", "activateactivate");
    if (mlocationClient == null) {
        mlocationClient = new AMapLocationClient(getApplicationContext());
        mLocationOption = new AMapLocationClientOption();
        mlocationClient.setLocationListener(this);
        //  mLocationOption.setLocationPurpose(AMapLocationClientOption.AMapLocationPurpose.SignIn);
        mLocationOption.setLocationMode(AMapLocationClientOption.AMapLocationMode.Hight_Accuracy);
        mlocationClient.setLocationOption(mLocationOption);
        mlocationClient.stopLocation();
        mlocationClient.startLocation();
    }
}

@Override
public void deactivate() {
    Log.d("activateactivate", "deactivatedeactivate");
    mListeners = null;
    if (mlocationClient != null) {
        mlocationClient.stopLocation();
        mlocationClient.onDestroy();
    }
    mlocationClient = null;
}

@Override
public void onTouch(MotionEvent motionEvent) {
    if (canMove) {
        //用户拖动地图后，不再跟随移动，直到用户点击定位按钮
        canMove = false;
    }
}

}