Question

我需要获取GPS中的当前位置并传递mapview。我的代码无效，返回错误：代码工作，如果在MapView中的kv语言中添加lat：和lon：数值。有关从函数on_locations获取值lat和lon的任何想法吗？

ValueError: None is not allowed for MapView.lat

代码：

#-*- coding: utf-8 -*-
from kivy.lang import Builder
from plyer import gps
from kivy.app import App
from kivy.properties import StringProperty
from kivy.clock import Clock, mainthread
from kivy.uix.popup import Popup
from kivy.network.urlrequest import UrlRequest
from kivy.uix.label import Label
import json
import kivy.garden.mapview

kv = '''
#:import C kivy.utils.get_color_from_hex
#:import sys sys
#:import MapSource mapview.MapSource

BoxLayout:
    canvas:
        Color:
            rgb: C('#ffffff')
        Rectangle:
            pos: self.pos
            size: self.size
    orientation: 'vertical'
    BoxLayout:
        orientation: 'vertical'
        MapView:
            lat: app.on_location(self.lat)
            lon: app.on_location(self.long)
            zoom: 13
            map_source: MapSource(sys.argv[1], attribution="") if len(sys.argv) > 1 else "osm"
            MapMarkerPopup:
                lat: app.on_location(self.lat)
                lon: app.on_location(self.long)
                popup_size: dp(230), dp(130)
                Bubble:
                    BoxLayout:
                        orientation: "horizontal"
                        padding: "5dp"
                        Label:
                            text: "[b]Você está aqui![/b]"
                            markup: True
                            halign: "center"
    BoxLayout:
        assunto: assunto
        orientation: 'vertical'
        padding: [30, 30, 30, 100]
        spacing: 10
        Spinner:
            id: assunto
            text: 'Selecionar Assunto'
            background_color: C('#1180c4')
            background_normal: ''
            values: ('Buraco e Pavimentação', 'Calçadas guias e Postes', 'Ciclovias, Faixas e outros', 'Semáforos, sinalização e outros.', 'Iluminação Pública')
            size_hint_y: None
            height: '40dp'

        BoxLayout:
            orientation: 'horizontal'
            height: '40dp'
            size_hint_y: None
            ToggleButton:
                text: 'Ler Localizacao' if self.state == 'normal' else 'Parar Leitura'
                on_state:
                    app.start(1000, 0) if self.state == 'down' else \
                    app.stop()
            Button:
                text: 'Salvar'
                on_press: app.salvarLocalizacao()
'''

class GpsTest(App):
    gps_get = StringProperty()
    gps_location = StringProperty()
    gps_status = StringProperty()
    detail_text = StringProperty()


    def build(self):
        try:
            gps.configure(on_location=self.on_location,
                          on_status=self.on_status)

        except NotImplementedError:
            import traceback
            traceback.print_exc()
            self.gps_status = 'Por favor, ative o GPS'
        return Builder.load_string(kv)

    def start(self, minTime, minDistance):
        gps.start(minTime, minDistance)

    def stop(self):
        gps.stop()

    @mainthread
    def on_location(self, **kwargs):
        self.lat = kwargs.get('lat')
        self.long = kwargs.get('lon')


    @mainthread
    def on_status(self, stype, status):
        self.gps_status = 'type={}\n{}'.format(stype, status)

    def on_pause(self):
        gps.stop()
        return True

    def on_resume(self):
        gps.start(1000, 0)
        pass

    def salvarLocalizacao(self):

        if self.root.ids.assunto.text == "Buraco e Pavimentação":
            self.assunto = "pavimentacao"
        elif self.root.ids.assunto.text == "Calçadas guias e Postes":
            self.assunto = "calcadasguias"
        elif self.root.ids.assunto.text == "Ciclovias, Faixas e outros":
            self.assunto = "cicliovia"
        elif self.root.ids.assunto.text == "Semáforos, sinalização e outros.":
            self.assunto = "semaforos"
        else:
            self.assunto = "iluminacao"

        self.localizacao = "POINT(" + self.gps_location + ")"
        self.params = json.dumps({"assunto": self.assunto, "localizacao": self.localizacao})
        self.headers = {'Content-type': 'application/json',
                        'Accept': 'application/json; charset=UTF-8',
                        'User-Agent': 'Mozilla/5.0 (Linux; U; Android 4.0.3; ko-kr; LG-L160L Build/IML74K) AppleWebkit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30'}
        self.req = UrlRequest('http://aaa.aaa.com:9000/api/add/', req_body=self.params, req_headers=self.headers, on_success=self.postSucess, on_error=self.postFail)

    def postSucess(self, req, result):
        text = Label(text="Enviado com sucesso!".format())
        pop_up = Popup(title="Sucesso", content=text, size_hint=(.7, .7))
        pop_up.open()

    def postFail(self, req, result):
        text = Label(text="Erro de conexão, verifique sua internet!".format())
        pop_up = Popup(title="Erro de conexão", content=text, size_hint=(.7, .7))
        pop_up.open()

if __name__ == '__main__':
    GpsTest().run()

Answer 1

我真的很讨厌在这里编写答案，请遵循working code 我刚刚在app类和on_location函数中添加了一些变量，并将Mapview中的值更改为app类中创建的变量。希望它有效

获取Kivy Garden MapView的位置

1 个答案: