arcGIS for android如何画一条弯曲的线？

我的项目满足了在ArcGIS地图上绘制曲线路径的需要，但我使用了很多方法，不知道如何在代码中绘制曲线。我尝试了多种不同的方法，但似乎都不起作用。有什么想法吗？先谢谢你

好的，我理解您希望使用ArcGIS android sdk在地图上添加一条曲线的要求

首先，你需要一组坐标，用来在地图上画线

// create a line symbol (green, 3 thick and a dash style)
SimpleLineSymbol lineSymbol = new SimpleLineSymbol(Color.GREEN, 3, SimpleLineSymbol.STYLE.DASH);

// create the line geometry
Polyline lineGeometry = new Polyline();
lineGeometry.startPath(-302557, 7570663);
lineGeometry.lineTo(-302959, 7570868);
lineGeometry.lineTo(-303042, 7571220);
lineGeometry.lineTo(-302700, 7571803);
lineGeometry.lineTo(-304043, 7576654);
lineGeometry.lineTo(-300544, 7585289);
lineGeometry.lineTo(-294365, 7592435);
lineGeometry.lineTo(-290122, 7594445);
lineGeometry.lineTo(-285283, 7595488);

// create the graphic using the geometry and the symbol
Graphic lineGraphic = new Graphic(lineGeometry, lineSymbol);

// add the graphic to the graphics layer
graphicsLayer.addGraphic(lineGraphic);

可以将多段线添加到图形图层并使用SimpleLineSymbol显示。此符号允许您使用有限的符号类型列表（虚线、虚线点、虚线点、点、空或实心）之一显示图形。可以通过指定宽度和颜色来进一步定义符号

下面是一些线条符号的示例-

确定线条符号样式后，请使用下面的代码在地图上添加线条

// create a line symbol (green, 3 thick and a dash style)
SimpleLineSymbol lineSymbol = new SimpleLineSymbol(Color.GREEN, 3, SimpleLineSymbol.STYLE.DASH);

// create the line geometry
Polyline lineGeometry = new Polyline();
lineGeometry.startPath(-302557, 7570663);
lineGeometry.lineTo(-302959, 7570868);
lineGeometry.lineTo(-303042, 7571220);
lineGeometry.lineTo(-302700, 7571803);
lineGeometry.lineTo(-304043, 7576654);
lineGeometry.lineTo(-300544, 7585289);
lineGeometry.lineTo(-294365, 7592435);
lineGeometry.lineTo(-290122, 7594445);
lineGeometry.lineTo(-285283, 7595488);

// create the graphic using the geometry and the symbol
Graphic lineGraphic = new Graphic(lineGeometry, lineSymbol);

// add the graphic to the graphics layer
graphicsLayer.addGraphic(lineGraphic);

上述代码的输出

有关更多详细信息，请参阅

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希望这能对你有所帮助：）

这对我帮助很大。非常感谢。