如何从 uiautomator 获取 android 设备的正确资源 ID？

Question

i have question about resource ids in uiautomator:

btn="id:/image_button_cancel"

why sometimes we add ".*" what is the meaning of that?

btn="id:/image_button_cancel.*"

Answer 1

I did not get your question exactly. Can you please elaborate more?

. * is used to match the resourceId by regex.

So id:/image_button_cancel. * means it will match any resourceId which starts with id:/image_button_cancel

For Ex,

id:/image_button_cancel_1

id:/image_button_cancelQuick

Like this...

Answer 2

It is a regular expression. The dot means any character and the asterisk means zero or more repetitions.

So using btn="id:/image_button_cancel.*" will match any resource id that starts with "id:/image_button_cancel".

Example (matched ids):

id:/image_button_cancel
id:/image_button_cancel_action

Example (not matched ids):

id:/cancel
id:/image_button

Search about regex to understand it better.