update android_env to simplify code

metagpt/environment/android_env/android_env.py

@@ -8,6 +8,8 @@ from metagpt.environment.android_env.android_ext_env import AndroidExtEnv
 from metagpt.environment.base_env import Environment
 
 
-class AndroidEnv(Environment, AndroidExtEnv):
+class AndroidEnv(AndroidExtEnv, Environment):
+    """in order to use actual `reset`&`observe`, inherited order: AndroidExtEnv, Environment"""
+
     rows: int = Field(default=0, description="rows of a grid on the screenshot")
     cols: int = Field(default=0, description="cols of a grid on the screenshot")

metagpt/environment/android_env/android_ext_env.py

@@ -28,11 +28,18 @@ class AndroidExtEnv(ExtEnv):
 
     def __init__(self, **data: Any):
         super().__init__(**data)
-        if data.get("device_id"):
+        device_id = data.get("device_id")
+        if device_id:
+            devices = self.list_devices()
+            if device_id not in devices:
+                raise RuntimeError(f"device-id: {device_id} not found")
             (width, height) = self.device_shape
             self.width = data.get("width", width)
             self.height = data.get("height", height)
 
+            self.create_device_path(self.screenshot_dir)
+            self.create_device_path(self.xml_dir)
+
     def reset(
         self,
         *,
@@ -108,6 +115,12 @@ class AndroidExtEnv(ExtEnv):
             exec_res = res.stdout.strip()
         return exec_res
 
+    def create_device_path(self, folder_path: Path):
+        adb_cmd = f"{self.adb_prefix_shell} mkdir {folder_path} -p"
+        res = self.execute_adb_with_cmd(adb_cmd)
+        if res == ADB_EXEC_FAIL:
+            raise RuntimeError(f"create device path: {folder_path} failed")
+
     @property
     def device_shape(self) -> tuple[int, int]:
         adb_cmd = f"{self.adb_prefix_shell} wm size"

metagpt/environment/android_env/env_space.py

@@ -2,6 +2,8 @@
 # -*- coding: utf-8 -*-
 # @Desc   :
 
+from pathlib import Path
+from typing import Union
 
 import numpy as np
 import numpy.typing as npt
@@ -61,7 +63,7 @@ class EnvObsParams(BaseEnvObsParams):
     obs_type: int = Field(default=EnvObsType.NONE, description="observation type")
     ss_name: str = Field(default="", description="screenshot file name")
     xml_name: str = Field(default="", description="xml file name")
-    local_save_dir: str = Field(default="", description="local dir to save file")
+    local_save_dir: Union[str, Path] = Field(default="", description="local dir to save file")
 
 
 EnvObsValType = str