Android Studio中HERE MAP SDK绘制MapPolyline报错求助

云上老周

2026-7-28

解决MapPolyline构造方法参数不匹配问题

错误提示明确说明：MapPolyline的构造方法仅接受GeoPolyline和MapPolylineStyle两个参数，但你直接传入了GeoPolyline、线宽（float）、颜色（Color）三个参数，导致参数不匹配。

解决步骤：

新增MapPolylineStyle类的导入，这个类负责封装线的样式属性
先通过MapPolylineStyle将线宽和颜色封装为样式对象，再传入MapPolyline的构造方法

修改后的完整代码：

import com.here.sdk.core.GeoCoordinates;
import com.here.sdk.core.GeoPolyline;
import com.here.sdk.core.Color;
import com.here.sdk.core.errors.InstantiationErrorException;
import com.here.sdk.mapviewlite.MapPolyline;
import com.here.sdk.mapviewlite.MapPolylineStyle; // 新增样式类导入

ArrayList<GeoCoordinates> coordinates = new ArrayList<>();
coordinates.add(new GeoCoordinates(52.53032, 13.37409));
coordinates.add(new GeoCoordinates(52.5309, 13.3946));
coordinates.add(new GeoCoordinates(52.53894, 13.39194));
coordinates.add(new GeoCoordinates(52.54014, 13.37958));
GeoPolyline geoPolyline;

try {
    geoPolyline = new GeoPolyline(coordinates);
} catch (InstantiationErrorException e) {
  geoPolyline = null;
}

// 增加空判断，避免geoPolyline为null时触发空指针异常
if (geoPolyline != null) {
    float widthInPixels = 20;
    Color lineColor = new Color((short) 0x00, (short) 0x90, (short) 0x8A, (short) 0xA0);
    // 创建线样式对象，封装线宽和颜色
    MapPolylineStyle polylineStyle = new MapPolylineStyle(widthInPixels, lineColor);
    // 传入GeoPolyline和样式对象创建MapPolyline
    MapPolyline mapPolyline = new MapPolyline(geoPolyline, polylineStyle);
}