Android GIS开发系列-- 入门季（13）Gdal简单写个shp文件

private void writeShp() throws UnsupportedEncodingException {
        //存放路径
        String shpPath = basePath + "/my_line.shp";
        ogr.RegisterAll();
        gdal.SetConfigOption("GDAL_FILENAME_IS_UTF8", "NO");
        // 不支持中文
        gdal.SetConfigOption("SHAPE_ENCODING", "");
        String strDriverName = "ESRI Shapefile";
        org.gdal.ogr.Driver oDriver = ogr.GetDriverByName(strDriverName);
        if (oDriver == null) {
            System.out.println(" 驱动不可用！\n");
            return;
        }
        // 创建数据源
        DataSource oDS = oDriver.CreateDataSource(shpPath, null);
        if (oDS == null) {
            return;
        }
        // 创建一个84坐标系的图层
        org.gdal.osr.SpatialReference sap = new org.gdal.osr.SpatialReference();
        sap.SetWellKnownGeogCS("WGS84");
        Layer oLayer = oDS
                .CreateLayer("TestPolygon", sap, ogr.wkbPolygon, null);
        if (oLayer == null) {
            System.out.println("图层创建失败！\n");
            return;
        }
        // 下面创建属性表
        // 先创建一个叫FieldID的整型属性
        FieldDefn oFieldID = new FieldDefn("ID", ogr.OFTInteger);
        oLayer.CreateField(oFieldID, 1);

        // 再创建一个叫FeatureName的字符型属性，字符长度为50
        FieldDefn oFieldName = new FieldDefn("name", ogr.OFTString);
        oFieldName.SetWidth(100);
        oLayer.CreateField(oFieldName, 1);

        FeatureDefn oDefn = oLayer.GetLayerDefn();

        // 创建要素
        Feature oFeatureTriangle = new Feature(oDefn);
        oFeatureTriangle.SetField(0, 0);
        oFeatureTriangle.SetField(1, "test");
        Geometry geomTriangle = Geometry
                .CreateFromWkt("POLYGON ((112 45,112 30,140 30))");
        oFeatureTriangle.SetGeometry(geomTriangle);

        oLayer.CreateFeature(oFeatureTriangle);
        //同步到文件中，一定要写
        oLayer.SyncToDisk();
    }