以编程方式更改ListView的每一行中禁用的单选按钮的值

I have a ListView with 3 TextViews and a radio button in each row. I retrieve a certain state from my firebase database and show it in the radio button. I just don't know how to access the radio button to change its state. I know i should use a custom adapter but i don't how to. Can someone help ? I have a ListView with 3 TextViews and a radio