地图
用于显示带有各种图层的地图。
打包
要构建使用 Map 控件的 Flet 应用程序，请在 flet build 命令中添加 --include-packages flet_map，例如：
flet build apk --include-packages flet_map
示例
示例
- Python
import random
import flet as ft
import flet.map as map
def main(page: ft.Page):
marker_layer_ref = ft.Ref[map.MarkerLayer]()
circle_layer_ref = ft.Ref[map.CircleLayer]()
def handle_tap(e: map.MapTapEvent):
print(
f"Name: {e.name} - coordinates: {e.coordinates} - Local: ({e.local_x}, {e.local_y}) - Global: ({e.global_x}, {e.global_y})"
)
if e.name == "tap":
marker_layer_ref.current.markers.append(
map.Marker(
content=ft.Icon(
ft.icons.LOCATION_ON, color=ft.cupertino_colors.DESTRUCTIVE_RED
),
coordinates=e.coordinates,
)
)
elif e.name == "secondary_tap":
circle_layer_ref.current.circles.append(
map.CircleMarker(
radius=random.randint(5, 10),
coordinates=e.coordinates,
color=ft.colors.random_color(),
border_color=ft.colors.random_color(),
border_stroke_width=4,
)
)
page.update()
def handle_event(e: map.MapEvent):
print(
f"{e.name} - Source: {e.source} - Center: {e.center} - Zoom: {e.zoom} - Rotation: {e.rotation}"
)
page.add(
ft.Text("Click anywhere to add a Marker, right-click to add a CircleMarker."),
map.Map(
expand=True,
configuration=map.MapConfiguration(
initial_center=map.MapLatitudeLongitude(15, 10),
initial_zoom=4.2,
interaction_configuration=map.MapInteractionConfiguration(
flags=map.MapInteractiveFlag.ALL
),
on_init=lambda e: print(f"Initialized Map"),
on_tap=handle_tap,
on_secondary_tap=handle_tap,
on_long_press=handle_tap,
on_event=handle_event,
),
layers=[
map.TileLayer(
url_template="https://tile.openstreetmap.org/{z}/{x}/{y}.png",
on_image_error=lambda e: print("TileLayer Error"),
),
map.RichAttribution(
attributions=[
map.TextSourceAttribution(
text="OpenStreetMap Contributors",
on_click=lambda e: e.page.launch_url(
"https://openstreetmap.org/copyright"
),
),
map.TextSourceAttribution(
text="Flet",
on_click=lambda e: e.page.launch_url("https://flet.dev"),
),
]
),
map.SimpleAttribution(
text="Flet",
alignment=ft.alignment.top_right,
on_click=lambda e: print("Clicked SimpleAttribution"),
),
map.MarkerLayer(
ref=marker_layer_ref,
markers=[
map.Marker(
content=ft.Icon(ft.icons.LOCATION_ON),
coordinates=map.MapLatitudeLongitude(30, 15),
),
map.Marker(
content=ft.Icon(ft.icons.LOCATION_ON),
coordinates=map.MapLatitudeLongitude(10, 10),
),
map.Marker(
content=ft.Icon(ft.icons.LOCATION_ON),
coordinates=map.MapLatitudeLongitude(25, 45),
),
],
),
map.CircleLayer(
ref=circle_layer_ref,
circles=[
map.CircleMarker(
radius=10,
coordinates=map.MapLatitudeLongitude(16, 24),
color=ft.colors.RED,
border_color=ft.colors.BLUE,
border_stroke_width=4,
),
],
),
map.PolygonLayer(
polygons=[
map.PolygonMarker(
label="Popular Touristic Area",
label_text_style=ft.TextStyle(
color=ft.colors.BLACK,
size=15,
weight=ft.FontWeight.BOLD,
),
color=ft.colors.with_opacity(0.3, ft.colors.BLUE),
coordinates=[
map.MapLatitudeLongitude(10, 10),
map.MapLatitudeLongitude(30, 15),
map.MapLatitudeLongitude(25, 45),
],
),
],
),
map.PolylineLayer(
polylines=[
map.PolylineMarker(
border_stroke_width=3,
border_color=ft.colors.RED,
gradient_colors=[ft.colors.BLACK, ft.colors.BLACK],
color=ft.colors.with_opacity(0.6, ft.colors.GREEN),
coordinates=[
map.MapLatitudeLongitude(10, 10),
map.MapLatitudeLongitude(30, 15),
map.MapLatitudeLongitude(25, 45),
],
),
],
),
],
),
)
ft.app(target=main)
Map 属性
configuration
一个 MapConfiguration 对象，定义了地图的初始状态和交互配置。
类型为 MapConfiguration。
layers
要在地图上显示的图层列表。
以下图层可用：