小编m0f*_*1us的帖子

我已经通过这个路径在android中添加了一些txt文件 /data/data/package-name/files/app/filefolder/file.txt

txt 文件与main.py类似在同一目录中/same_directory_with_main.py/filefolder/file.txt

基于这种经验，我正在尝试在我的应用程序中添加一些自定义字体。我创建目录的方式与添加 txt 文件的方式完全相同。

部分 main.py

from kivy.config import Config      
Config.set('kivy', 'default_font', [
    '/data/data/org.test.tubuc/files/app/font/NanumSquareR.ttfs',
    '/data/data/org.test.tubuc/files/app/font/NanumSquareL.ttfs',
])

但 logcat 说找不到字体路径。这里是日志。

09-24 10:47:57.506 18392 18581 I python  : ('Android kivy bootstrap done. __name__ is', '__main__')
09-24 10:47:57.540 18392 18581 I python  : ['/data/user/0/org.test.tubuc/files/app/lib/python2.7/site-packages', '/data/user/0/org.test.tubuc/files/app/lib/site-python']
09-24 10:47:57.540 18392 18581 I python  : AND: Ran string
09-24 10:47:57.540 18392 18581 I python  : Run user program, change dir and execute entrypoint
09-24 10:47:57.650 18392 18581 I python  : …

我想按 排列此列表list[i][1]。

List lst =
[
  ['a',2], 
  ['b',5],
  ['c',3],
  ['d',1],
];

所以才会变成这样。

[
  ['d',1], 
  ['a',2],
  ['c',3],
  ['b',5],
];

我怎样才能做到这一点？是否可以通过for循环和sort()组合来实现？

我正在尝试使用从 python 文件到.kv文件的变量，所以我搜索了类似的问题并找到了使用Property和编码的方式：

# in python file
class Test2App(App):
    abcd = StringProperty('test')
    def build(self):
        return presentation

# in kv file
<MyButton@Button>:
    text: "contents (%s)"%(app.abcd)

    background_color: (255, 255, 255,1)`

并出现错误。

 AttributeError: 'NoneType' object has no attribute 'bind'
   File "/usr/local/lib/python2.7/dist-packages/kivy/lang/builder.py", line 249, in create_handler
     return eval(value, idmap), bound_list
   File "/root/Desktop/hi/t2.kv", line 61, in <module>
     text: "contents (%s)"%(app.abcd)
   File "/usr/local/lib/python2.7/dist-packages/kivy/lang/parser.py", line 75, in __getattribute__
     object.__getattribute__(self, '_ensure_app')()
   File "/usr/local/lib/python2.7/dist-packages/kivy/lang/parser.py", line 70, in _ensure_app
     app.bind(on_stop=lambda instance:

   File "/usr/local/lib/python2.7/dist-packages/kivy/lang/builder.py", line 615, in …

        return
          Container(
              color: Colors.transparent,
              child:
              Column(
                children: <Widget>[
                  Container(
                      color: Colors.transparent,
                      height: 30,
                      child:
                      RaisedButton(
                        child:
                        Column(
                          children: <Widget>[
                            Text("Test"),
                          ],
                        ),
                        color: Colors.transparent,
                        elevation: 0,
                        splashColor: Colors.transparent,
                        //onPressed: () {
                        //  Navigator.push(context, MaterialPageRoute(builder: (context) => ToSchoolScreen()));
                        //},
                      )
                  ),
                ],
              )
          );

我有一个像上面这样的代码。我想在几秒钟后返回这个容器。但如果我Future像这样直接使用

        return
            Future.delayed(Duration(milliseconds: 500), () {
              Container(
                  color: Colors.transparent,
                  child:
                  Column(
                    children: <Widget>[
                      Container(
                          color: Colors.transparent,
                          height: 30,
                          child:
                          RaisedButton(
                            child:
                            Column(
                              children: <Widget>[
                                Text("Test"),
                              ],
                            ),
                            color: Colors.transparent,
                            elevation: 0,
                            splashColor: Colors.transparent,
                            //onPressed: () …