generic.py 文件源码

def __init__(self, **kwargs):
        '''
        if kv is not loaded the load it either from string or a file specified
        need to specify "kv_string" or "kv_file", as well as unique "name"
        '''
        if not self.kv_loaded:
            from kivy.lang import Builder
            if self.kv_string:
                Builder.load_string(self.kv_string)
            if self.kv_file:
                Builder.load_file(self.kv_file)
            self.kv_loaded = True
        super(DynamicScreen, self).__init__(**kwargs)