problem with Image RecycleView in kivy

[Poorya bolooryan]

Dears,

I try to make RecycleView with Image and i didn't get any result.how to load the Image into the view's in For Loop.here is my code in Py and KV

first i want to try get this RV working then in the next step load directly from DB.

Main.Py

Builder.load_file("../venv/kv/sliding.kv")
class ExampleRV(RecycleView, ButtonBehavior):
    def __init__(self, **kwargs):
        super(ExampleRV, self).__init__(**kwargs)
        pic1 = Image(source="../venv/icon/pics/a.png")
        pic2 = Image(source="../venv/icon/pics/b.png")
        pic3 = Image(source="../venv/icon/pics/c.png")
        xr = [pic1,pic2,pic3]
        self.data = [{'source': str(x)} for x in xr]

Sliding.kv

<ExampleRV>:
    viewclass:'BoxLayout'
    RecycleBoxLayout:
        default_size: dp(160), None
        default_size_hint: None, 1
        size_hint_x: None
        width: self.minimum_width
        orientation: 'horizontal'
        padding: 10
        spacing: 30
        canvas:
            Color:
                rgba: utils.get_color_from_hex("#fcfcfc")
            Rectangle:
                size: self.size
                pos:self.pos


Note that  i changed the viewclass to Image  and app is working  but its mentioned that :
[ERROR  ] [Image       ] Error reading file <kivy.uix.image.Image object at 0x000002DC166F73C8>
[ERROR  ] [Image       ] Error reading file <kivy.uix.image.Image object at 0x000002DC166F7588>
[ERROR  ] [Image       ] Error reading file <kivy.uix.image.Image object at 0x000002DC166F7748>

how i can make Image RecycleView? any idead or help from your side appreciated.

[Elliot Garbus]

Code example below.  With a recycle view, the widgets get populated with data from a list of dicts.  The dict keys are the attributes you want to set.

In the example below, the class Image and title is created.  Note in the kv code how the attributes are applied to the class.  In the Python code, the attributes are declared using kivy properties.   The rv_data_list is a list of dicts.  The keys, ‘source’ and ‘title’ correspond to the attributes in the viewclass.

 

I had 3 images handy so I created the images list, and use the 3 images over and over… you can of course ignore this little trick.

 

As you are going to be dynamically changing the rv_data_list from a database, you should make this a list property in your code.

from kivy.app import App
from kivy.lang import Builder
from kivy.uix.boxlayout import BoxLayout
from kivy.properties import StringProperty

kv = """
<ImageAndTitle>:
    Image:
        source: root.source
    Label:
        text: root.title
        
TestBox:
    orientation: 'vertical'
    RecycleView:
        id:rv
        viewclass: 'ImageAndTitle'
        data: root.rv_data_list
        scroll_type: ['bars','content']
        #bar_inactive_color: 1,1,1,1
        bar_width: dp(20)
        do_scroll_x: False
        RecycleBoxLayout:
            default_size: None, dp(56)
            default_size_hint: 1, None
            size_hint_y: None
            height: self.minimum_height
            orientation: 'vertical'
"""


class ImageAndTitle(BoxLayout):
    title = StringProperty()
    source = StringProperty()


images = ['1a.png', '2a.png', '3a.png']   # a little hack to use 3 images over and over... 


class TestBox(BoxLayout):
    rv_data_list = [{'source': images[n % 3], 'title': f'image title {n}'} for n in range(20)]


class RVTestApp(App):
    def build(self):
        return Builder.load_string(kv)


RVTestApp().run()

--
You received this message because you are subscribed to the Google Groups "Kivy users support" group.
To unsubscribe from this group and stop receiving emails from it, send an email to kivy-users+...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/kivy-users/748d1784-7e1e-4c19-97a0-8a3693f7bc46%40googlegroups.com.