Android Gaode map adds line segment texture

The shared bicycle track interface such as: Xiaohuangche and Mobike interface layout adopts the AutoNavi map, and each track segment has a corresponding map texture
. First , we need to develop the map line segment texture in the AutoNavi map development environment. A few prerequisites are clarified:

The line segment adds texture according to the official document is set in the PolylienOptions class
The package where the PolylienOptions class is located is: com.amap.api.maps.model.PolylineOptions;
There is also a PolylienOptions class in AMap corresponding to com.amap.api.maps2d.AMap, but this class cannot set textures

The official documentation states the following:

name	illustrate
setCustomTexture(BitmapDescriptor customTexture)	Set the texture of the line segment. It is recommended that the length and width of the texture resource be the nth power of 2
setCustomTextureIndex(java.util.List customTextureIndexs)	Set the segmented texture index array
setCustomTextureList(java.util.List customTextureList)	Set segmented texture list
setDottedLine(boolean isDottedLine)	Set whether to draw a dotted line, the default is false, draw a solid line
setUseTexture(boolean useTexture)	Whether to use texture maps
useGradient(boolean useGradient)	Set whether to use gradient color
visible(boolean isVisible)	Set the visibility of line segments
width(float width)	Set the width of the line segment, in pixels
zIndex(float zIndex)	Set the value of the Z axis of the line segment

First, you need your own texture map. The following three texture images

blue texture illustration

green texture map

red texture illustration

Code development:
place the texture image under the Asset file directory. The
tool class code is as follows:

 /**
     * Created by adminZPH on 2017/4/14.
     * 设置线条中的纹理的方法
     * @return PolylineOptions
     * */
    public static PolylineOptions GetPolylineOptions(){
        //添加纹理图片
        List<BitmapDescriptor> textureList = new ArrayList<BitmapDescriptor>();
        BitmapDescriptor mRedTexture = BitmapDescriptorFactory
                .fromAsset("icon_road_red_arrow.png");
        BitmapDescriptor mBlueTexture = BitmapDescriptorFactory
                .fromAsset("icon_road_blue_arrow.png");
        BitmapDescriptor mGreenTexture = BitmapDescriptorFactory
                .fromAsset("icon_road_green_arrow.png");
        textureList.add(mRedTexture);
        textureList.add(mBlueTexture);
        textureList.add(mGreenTexture);
        // 添加纹理图片对应的顺序
        List<Integer> textureIndexs = new ArrayList<Integer>();
        textureIndexs.add(0);
        textureIndexs.add(1);
        textureIndexs.add(2);
        PolylineOptions polylienOptions=new PolylineOptions();
        polylienOptions.setCustomTextureList(textureList);
        polylienOptions.setCustomTextureIndex(textureIndexs);
        polylienOptions.setUseTexture(true);
        polylienOptions.width(7.0f);
        return polylienOptions;
    }

The above method is used to return a polylienOptions. If you have N latitude and longitude points, you need to add texture display on the map in pairs, you can use it directly. For
example :

   for (int i =0; i < a.size() - 1; ++i) {

            amap.addPolyline(GetPolylineOptions()).add(
                    new LatLng(a.get(i).getLatLonPoint().getLatitude(), a.get(i).getLatLonPoint().getLongitude()),
                    new LatLng(a.get(i + 1).getLatLonPoint().getLatitude(), a.get(i + 1).getLatLonPoint().getLongitude())
            );

        }

This can be achieved through the above, and the specific business logic is specifically written.
This sea2017.04.14 13:06

Android Gaode map adds line segment texture

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