【发布时间】：2016-02-13 06:38:29
【问题描述】：
当我从文件向kivy 列表视图listitemlabel 添加项目时，标签的间距似乎与新添加的内容重叠，我不确定从哪个部分开始。当列表在开始时为空白并且添加了新内容时，标签之间的间距不会重叠，但如果我的_reset_spopulate 有问题，那么不知道如何修复。
from kivy.app import App
from kivy.uix.button import Button
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.gridlayout import GridLayout
from kivy.uix.textinput import TextInput
from kivy.adapters.simplelistadapter import SimpleListAdapter
from kivy.uix.listview import ListView, ListItemButton, ListItemLabel
class Controller(GridLayout):
data = ['0','1','2']
test_list=[]
data0 = ['hello','2','3','2']
data1 = ['world','e','r','young']
data2 = ['1']
all_list = []
all_list.append(data0)
all_list.append(data1)
all_list.append(data2)
info_data = []
list_x = 0
def __init__(self, **kwargs):
super(Controller,self).__init__(**kwargs)
self.x = 0
self.my_list.adapter.bind(on_selection_change = self.selection_change)
self.my_list.adapter.cls.deselected_color = (1,1,1,1)
self.my_list.adapter.cls.selected_color = (1,0,1,1)
def repopulate(self):
if(hasattr(self.my_info, '_reset_spopulate')):
self.my_info._reset_spopulate()
def on_load_files(self):
pass
def on_enter(self):
self.all_list[self.list_x].append(self.my_in.text)
self.my_info.adapter.data.append(self.my_in.text)
self.repopulate()
def selection_change(self,adapter,*args):
if len(adapter.selection)!=0:
self.list_x=int(adapter.selection[0].text[0])
#for x in xrange(0,len(self.all_list[self.list_x])):
self.my_info.adapter.data = self.all_list[self.list_x]
#self.my_info.adapter.data.append(self.all_list[self.list_x][x])
self.repopulate()
def load_test(self):
with open('./data0.txt','r+') as d0:
for line in d0.readlines():
try:
self.data0.append(line)
except ValueError:
pass
for x in xrange(0,len(self.data0)):
self.data0 = [i.strip('\r\n') for i in self.data0]
def load_files(self):
with open('./data0.txt','r+') as d0:
for line in d0.readlines():
try:
self.test_list.append(line)
except ValueError:
pass
for x in xrange(0,len(self.test_list)):
self.test_list=[i.strip('\n') for i in self.test_list]
self.data0 = self.test_list
self.all_list.append(self.data0)
with open('./data1.txt','r+') as d0:
for line in d0.readlines():
try:
self.test_list.append(line)
except ValueError:
pass
for x in xrange(0,len(self.test_list)):
self.test_list=[i.strip('\n') for i in self.test_list]
self.data1 = self.test_list
self.all_list.append(self.data1)
with open('./data2.txt','r+') as d2:
for line in d2.readlines():
try:
self.test_list.append(line)
except ValueError:
pass
for x in xrange(0,len(self.test_list)):
self.test_list=[i.strip('\n') for i in self.test_list]
self.data2 = self.test_list
self.all_list.append(self.data2)
def write_files(self):
with open('./data0.txt','w+') as d0:
d0.seek(0)
for x in xrange(0,len(self.data0)):
d0.write(self.data0[x]+'\n')
d0.seek(0)
for x in xrange(0,len(self.data0)):
print d0.readline().strip('\n')
with open('./data1.txt','w+') as d0:
d0.seek(0)
for x in xrange(0,len(self.data1)):
d0.write(self.data1[x]+'\n')
d0.seek(0)
for x in xrange(0,len(self.data1)):
print d0.readline().strip('\n')
with open('./data2.txt','w+') as d2:
d2.seek(0)
for x in xrange(0,len(self.data2)):
d2.write(self.data2[x]+'\n')
d2.seek(0)
for x in xrange(0,len(self.data2)):
print d2.readline().strip('\n')
def on_write_files(self):
pass#self.write_files()
class NameApp(App):
def build(self):
controller = Controller()
controller.load_test()
return controller
if __name__ == '__main__':
NameApp().run()
这是名称.kv
#:kivy 1.4.0
#:import label kivy.uix.label
#:import sla kivy.adapters.simplelistadapter
#:import la kivy.adapters.listadapter
#:import lib kivy.uix.listview
<Label>:
text_size: self.size
halign: 'left'
valign: 'middle'
<Controller>:
my_in:my_in_id
my_info:my_info_id
my_list:my_list_id
cols:1
FloatLayout:
Button:
text:'on_load_files()'
size_hint:None,None
size:100,30
pos:100,100
on_press:root.on_load_files()
ListView:
id:my_list_id
size_hint:.2,.6
size:00,400
pos_hint:{'x':.2,'y':.2}
pos:200,200
adapter:
la.ListAdapter(
data=root.data,
cls=lib.ListItemButton,
selection_mode='single',
allow_empty_selection=True
)
ListView:
id:my_info_id
size_hint: .4,.6
pos:400,200
adapter:
la.ListAdapter(
data=root.info_data,
cls=lib.ListItemLabel,
selection_mode='single',
allow_empty_selection=True)
Button:
size_hint:None,None
size:100,30
pos:0,0
text:'enter/clear'
on_press:root.on_write_files()
TextInput:
size_hint:.8,None
size:400,30
pos:100,0
background_color:0.2,0.2,0.2,1
foreground_color:1,1,1,1
id:my_in_id
multiline:False
text:'enter new item'
on_text_validate:root.on_enter()
【问题讨论】：