Question

感谢目前为止的一切！还有一个问题，然后有时间擦掉。

我似乎找不到将文本输出到标签的方法，如果可能的话，我希望能够在该标签中显示链接，以便用户可以打开网页。

我已经尝试定义新的程序来执行此操作但是在构建时指定文本时我似乎无法在此之后更改它！我继续得到未定义的变量，因为我明显在错误的地方做这件事！

import kivy
from kivy.app import App
from kivy.uix.button import Button
from kivy.uix.label import Label
from kivy.uix.spinner import Spinner
from bs4 import BeautifulSoup
from urllib import request
import sys, traceback
from functools import partial
import re
from kivy.base import runTouchApp
from kivy.lang import Builder
from kivy.uix.floatlayout import FloatLayout
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.textinput import TextInput
from kivy.uix.image import Image


class DSFRSapp(App):
    def build(self):
        self.root = FloatLayout()
        i = Image(source='DSFRSLogo.png',
                  allow_stretch=True,
                  pos_hint = ({'center_x':0.5, 'y': .25}))
        spinner = Spinner(text='Select a Station',
                             values=('Appledore','Axminster','Bampton','Barnstaple','Bere Alston','Bideford','Bovey Tracey','Braunton','Bridgwater','Brixham','Buckfastleigh','Budleigh Salterton','Burnham on sea','Camels Head','Castle Cary','Chagford','Chard','Cheddar','Chulmleigh','Colyton','Combe Martin','Crediton','Crewkerne','Crownhill','Cullompton','Dartmouth','Dawlish','Exeter Danes Castle','Exeter Middlemoor','Exmouth','Frome','Glastonbury','Greenbank','Hartland','Hatherleigh','Holsworthy','Honiton','Ilfracombe','Ilminster','Ivybridge','Kingsbridge','Kingston','Lundy Island','Lynton','Martock','Minehead','Modbury','Moretonhampstead','Nether Stowey','Newton Abbot','North Tawton','Okehampton','Ottery St Mary','Paignton','Plympton','Plymstock','Porlock','Princetown','Salcombe','Seaton','Shepton Mallet','Sidmouth','Somerton','South Molton','Street','Taunton','Tavistock','Teignmouth','Tiverton','Topsham','Torquay','Torrington','Totnes','USAR','Wellington','Wells','Williton','Wincanton','Witheridge','Wiveliscombe','Woolacombe','Yelverton','Yeovil'),
                            size_hint=(None, None),
                            size=(150, 44),
                            pos_hint = ({'center_x':0.5, 'y': 0.35}))
        L = Label(text="Results will display here",
                      size_hint=(None, None),
                      pos_hint =({'center_x':0.5, 'y': 0.25}),
                      size=(150, 44))
        self.root.add_widget(spinner)
        self.root.add_widget(L)
        self.root.add_widget(i)
        spinner.bind(text=show_selected_value)



def show_selected_value(spinner, text):
    FindIncident(text)


def FindIncident( sStation, *args ):
    webpage = request.urlopen("http://www.dsfire.gov.uk/News/Newsdesk/IncidentsPast7days.cfm?siteCategoryId=3&T1ID=26&T2ID=35")#main page
    soup = BeautifulSoup(webpage)
    incidents = soup.find(id="CollapsiblePanel1") #gets todays incidents panel
    Links = [] #create list call Links

    for line in incidents.find_all('a'): #get all hyperlinks
        Links.append("http://www.dsfire.gov.uk/News/Newsdesk/"+line.get('href')) #loads links into Links list while making them full links
    n = 0
    e = len(Links)
    if e == n: #if no links available no need to continue
    #output message to label
       print("nothing found please try again later")
       sys.exit(0)
    sFound = False
    while n < e: #loop through links to find station
        if sFound: #if the station has been found stop looking
             sys.exit(0)
        webpage = request.urlopen(Links[n]) #opens link in list)
        soup = BeautifulSoup(webpage) #loads webpage
        if soup.find_all('p', text=re.compile(r'{}'.format(sStation))) == []:#check if returned value is found
        #do nothing leaving blank gave error
            a = "1" #this is pointless but stops the error
        else:
            print(soup.find_all('p', text=re.compile(r'{}'.format(sStation))))
            WebLink = Links[n]
            sFound = True # to avoid un needed goes through the loop process
        n=n+1 # moves counter to next in list
    if not sFound: #after looping process if nothing has been found output nothing found
        print("nothing found please try again later ")
    #output to label
    return;



if __name__ =="__main__":
    DSFRSapp().run()

我应该提一下，我有一个可以显示的徽标当屏幕重新调整大小时，我会更好地定位小部件我希望背景颜色为白色，可能带有一个薄的红色边框（只是为了爵士乐）

如果你对这些问题的答案都很好！但目前的优先级是将网络搜索的结果输出到标签，而不是打印到控制台，最好是通过链接（WebLink）

再次感谢，一旦我解决了这些问题，我就打算把它送到我的消防队，作为消防员的一种方式让其他人知道消防队员什么时候可能会完成一次喊叫。但只有一次我可以把它打包到android并且可能让其他人把它移植到ios，因为我没有mac。

Answer 1

我已将代码更改为pythonic（尤其是循环）。该标签现已连接，但我还没有尝试调试您的网页抓取。你自己必须重新检查它。

import kivy
from kivy.app import App
from kivy.uix.button import Button
from kivy.uix.label import Label
from kivy.uix.spinner import Spinner
from bs4 import BeautifulSoup
from urllib import request
import sys, traceback
from functools import partial
import re
from kivy.base import runTouchApp
from kivy.lang import Builder
from kivy.uix.floatlayout import FloatLayout
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.textinput import TextInput
from kivy.uix.image import Image
from kivy.properties import ObjectProperty

kv = '''
<IncidentScreen>:
    station: stationSpinner
    results: resultsLabel
    Image:
        source:'DSFRSLogo.png'
        allow_stretch:True
        pos_hint: {'center_x':0.5, 'y': .25}

    Spinner:
        id: stationSpinner
        text:'Select a Station'
        values: ('Appledore','Axminster','Bampton','Barnstaple','Bere Alston','Bideford','Bovey Tracey','Braunton','Bridgwater','Brixham','Buckfastleigh','Budleigh Salterton','Burnham on sea','Camels Head','Castle Cary','Chagford','Chard','Cheddar','Chulmleigh','Colyton','Combe Martin','Crediton','Crewkerne','Crownhill','Cullompton','Dartmouth','Dawlish','Exeter Danes Castle','Exeter Middlemoor','Exmouth','Frome','Glastonbury','Greenbank','Hartland','Hatherleigh','Holsworthy','Honiton','Ilfracombe','Ilminster','Ivybridge','Kingsbridge','Kingston','Lundy Island','Lynton','Martock','Minehead','Modbury','Moretonhampstead','Nether Stowey','Newton Abbot','North Tawton','Okehampton','Ottery St Mary','Paignton','Plympton','Plymstock','Porlock','Princetown','Salcombe','Seaton','Shepton Mallet','Sidmouth','Somerton','South Molton','Street','Taunton','Tavistock','Teignmouth','Tiverton','Topsham','Torquay','Torrington','Totnes','USAR','Wellington','Wells','Williton','Wincanton','Witheridge','Wiveliscombe','Woolacombe','Yelverton','Yeovil')
        size_hint: None, None
        size: (150, 44)
        pos_hint: {'center_x':0.5, 'y': 0.35}
        on_text: app.show_selected_value()

    Label:
        id: resultsLabel
        text:"Results will display here"
        color: [0,0,0,1]
        size_hint:(None, None)
        pos_hint:{'center_x':0.5, 'y': 0.25}
        size: (150, 44)

'''
class IncidentScreen(FloatLayout):
    station = ObjectProperty(None)
    results = ObjectProperty(None)

class DSFRSapp(App):

    def build(self):
        Builder.load_string(kv)
        fl = IncidentScreen()
        return fl

    def show_selected_value(self):
        incident = self.FindIncident(self.root.station.text)
        if incident:
            self.root.results.text = incident
        else:
            self.root.results.text = 'Try again later'

    def FindIncident(self, sStation, *args ):
        webpage = request.urlopen("http://www.dsfire.gov.uk/News/Newsdesk/IncidentsPast7days.cfm?siteCategoryId=3&T1ID=26&T2ID=35")#main page
        soup = BeautifulSoup(webpage)
        incidents = soup.find(id="CollapsiblePanel1") #gets todays incidents panel
        #create list call Links

        #get all hyperlinks: loads links into Links list while making them full links
        Links = [''.join(["http://www.dsfire.gov.uk/News/Newsdesk/",line.get('href')]) for line in incidents.find_all('a')]

        #loop through links to find station
        incident = ''
        for link in Links:
            print('Trying {}'.format(link))
            webpage = request.urlopen(link) #opens link in list)
            soup = BeautifulSoup(webpage) #loads webpage

            #check if returned value is found
            incident = soup.find_all('p', text=re.compile(r'{}'.format(sStation)))
            print(incident)
            break

        return incident



if __name__ =="__main__":
    DSFRSapp().run()

有一些严重的警告：

您已经提到要为Android打包这个但是您似乎正在使用python3语法。据我所知，kivy目前仅适用于Python2中的Android
我建议至少进行非常基本的错误处理，例如网络解析没有异常处理。
您用于收集事件的网站已有xml feeds。最好解析一下以获取事件列表
kivy语言更适合创建复杂的GUI配置。我建议将kv字符串的所有内容移动到名为DSFR.kv的单独文件中。然后，您可以删除Builder.loadstring行。它还允许您更轻松地在问题中提及额外的更改
我不会将微调器直接绑定到Web查询，因为如果Web请求需要很长时间，它就会冻结。我建议您使用具有单独结果屏幕的screenmanager并使用微调器触发转换
一个接一个地使用多个查询充斥网站是让您的应用和/或IP地址被网站管理员列入黑名单的好方法。请小心你是如何做到的。

额外问题：

添加网站链接：非常愚蠢的kivy开发者已经在标签类型中添加了标记。您可以在kivy文档here中获取详细信息。这里还有一个例子： Kivy hyperlink in kv file 但是您需要修改它以在代码中打开on_ref_press处理程序的参数中提供的ref： How can I get ref text when I have many refs in kivy label?
薄红色边框：也许这个问题指的是你的想法：Is there a simple way to add a border to Kivy Labels, Buttons, Widgets etc. with-out images?

将文本输出到过程中的标签

1 个答案: