@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

//在加载布局之前获取所需权限

addpermission();

Environment.setLicensePath(sdcard + "/YN_BGDC/license/");

Environment.initialization(this);

setContentView(R.layout.activity_main);

DatasourceConnectionInfo info = new DatasourceConnectionInfo();

info.setAlias("TianDiTu1");

info.setEngineType(EngineType.OGC);

info.setDriver("WMTS");

String url = "https://t0.tianditu.gov.cn/img_c/wmts?tk=493052acd769f94413bb19a27879476b";

info.setServer(url);

m_workspace = new Workspace();

Datasource datasource = m_workspace.getDatasources().open(info);

m_mapControl = m_mapView.getMapControl();

m_mapControl.getMap().getLayers().add(datasource.getDatasets().get(0), true);

}

报错     Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'com.supermap.mapping.MapControl com.supermap.mapping.MapView.getMapControl()' on a null object reference