init project

example/lib/pages/overlays/polyline_texture.dart

@@ -0,0 +1,112 @@
+import 'package:amap_map/amap_map.dart';
+import 'package:amap_map_example/base_page.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter/widgets.dart';
+
+import 'package:amap_map/amap_map.dart';
+
+class PolylineTextureDemoPage extends BasePage {
+  PolylineTextureDemoPage(String title, String subTitle)
+      : super(title, subTitle);
+  @override
+  Widget build(BuildContext context) {
+    return _Body();
+  }
+}
+
+class _Body extends StatefulWidget {
+  const _Body();
+
+  @override
+  State<StatefulWidget> createState() => _State();
+}
+
+class _State extends State<_Body> {
+  _State();
+
+  Map<String, Polyline> _polylines = <String, Polyline>{};
+  late String selectedPolylineId;
+
+  void _onMapCreated(AMapController controller) {}
+
+  List<LatLng> _createPoints() {
+    final List<LatLng> points = <LatLng>[];
+    final int polylineCount = _polylines.length;
+    final double offset = polylineCount * -(0.01);
+    points.add(LatLng(39.938698 + offset, 116.275177));
+    points.add(LatLng(39.966069 + offset, 116.289253));
+    points.add(LatLng(39.944226 + offset, 116.306076));
+    points.add(LatLng(39.966069 + offset, 116.322899));
+    points.add(LatLng(39.938698 + offset, 116.336975));
+    return points;
+  }
+
+  void _add() {
+    final Polyline polyline = Polyline(
+        width: 20,
+        customTexture:
+            BitmapDescriptor.fromIconPath('assets/texture_green.png'),
+        joinType: JoinType.round,
+        points: _createPoints());
+
+    setState(() {
+      _polylines[polyline.id] = polyline;
+    });
+  }
+
+  @override
+  void initState() {
+    super.initState();
+  }
+
+  @override
+  void dispose() {
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final AMapWidget map = AMapWidget(
+      onMapCreated: _onMapCreated,
+      polylines: Set<Polyline>.of(_polylines.values),
+    );
+
+    return Container(
+      height: MediaQuery.of(context).size.height,
+      width: MediaQuery.of(context).size.width,
+      child: Column(
+        mainAxisAlignment: MainAxisAlignment.start,
+        crossAxisAlignment: CrossAxisAlignment.stretch,
+        children: [
+          Expanded(
+            flex: 10,
+            child: map,
+          ),
+          Expanded(
+              flex: 1,
+              child: TextButton(
+                onPressed: _add,
+                style: ButtonStyle(
+                  shape: MaterialStateProperty.all(RoundedRectangleBorder(
+                      borderRadius: BorderRadius.circular(10))),
+                  //文字颜色
+                  foregroundColor: MaterialStateProperty.all(Colors.white),
+                  //水波纹颜色
+                  overlayColor: MaterialStateProperty.all(Colors.blueAccent),
+                  //背景颜色
+                  backgroundColor: MaterialStateProperty.resolveWith((states) {
+                    //设置按下时的背景颜色
+                    if (states.contains(MaterialState.pressed)) {
+                      return Colors.blueAccent;
+                    }
+                    //默认背景颜色
+                    return Colors.blue;
+                  }),
+                ),
+                child: Text('添加纹理线'),
+              )),
+        ],
+      ),
+    );
+  }
+}