如何用Python+ADB在MEmu模拟器实现游戏缩放？现有代码失效求助

你当前的缩放功能失效，核心原因是两个input swipe命令通过&&串行执行，实际是先完成第一个滑动，再执行第二个，而缩放需要两个手指同时进行滑动才能触发系统/游戏的缩放手势。

针对MEmu模拟器的ADB环境，提供两种可行修复方式：

方式1：使用ADB多点触控手势命令（推荐，Android 10+支持） #

Android 10及以上的ADB提供input touchscreen gesture命令，可模拟多点触控的同时滑动。修改zoom函数的执行逻辑：

import subprocess
import time

def zoom(zoom_in=True, duration=300, distance=100):
    # 获取屏幕尺寸
    size_output = subprocess.check_output(["adb", "shell", "wm", "size"]).decode().strip()
    width, height = map(int, size_output.split()[-1].split('x'))
    
    # 计算坐标
    center_x, center_y = width // 2, height // 2
    half_distance = distance // 2
    
    if zoom_in:
        # 放大：双指从外向内滑动（纠正原逻辑的方向错误）
        start_x1, start_y1 = center_x - distance, center_y - distance
        start_x2, start_y2 = center_x + distance, center_y + distance
        end_x1, end_y1 = center_x - half_distance, center_y - half_distance
        end_x2, end_y2 = center_x + half_distance, center_y + half_distance
    else:
        # 缩小：双指从内向外滑动
        start_x1, start_y1 = center_x - half_distance, center_y - half_distance
        start_x2, start_y2 = center_x + half_distance, center_y + half_distance
        end_x1, end_y1 = center_x - distance, center_y - distance
        end_x2, end_y2 = center_x + distance, center_y + distance
    
    # 构造多点触控手势命令：同步双指的按下、滑动、抬起动作
    # 事件格式：type,x,y,pressure,time_ms（type:0=按下,2=移动,1=抬起）
    gesture_cmd = (
        f"input touchscreen gesture "
        f"0,{start_x1},{start_y1},100,0 "
        f"0,{start_x2},{start_y2},100,0 "
        f"2,{end_x1},{end_y1},100,{duration} "
        f"2,{end_x2},{end_y2},100,{duration} "
        f"1,{end_x1},{end_y1},0,{duration+10} "
        f"1,{end_x2},{end_y2},0,{duration+10}"
    )
    
    subprocess.run(["adb", "shell", gesture_cmd], shell=True)
    time.sleep((duration + 10) / 1000 + 0.1)

说明 #

• 修正了原代码中放大/缩小的方向逻辑（原逻辑将滑动方向搞反）
• 通过时间戳同步双指的动作，确保滑动同时进行

方式2：模拟底层触摸事件（兼容旧版本） #

如果MEmu不支持gesture命令，可直接发送sendevent命令模拟多点触控（需先确定触摸设备路径，通常为/dev/input/event2或event3）：

import subprocess
import time

def zoom(zoom_in=True, duration=300, distance=100):
    # 获取屏幕尺寸
    size_output = subprocess.check_output(["adb", "shell", "wm", "size"]).decode().strip()
    width, height = map(int, size_output.split()[-1].split('x'))
    
    # 计算坐标
    center_x, center_y = width // 2, height // 2
    half_distance = distance // 2
    
    if zoom_in:
        start_x1, start_y1 = center_x - distance, center_y - distance
        start_x2, start_y2 = center_x + distance, center_y + distance
        end_x1, end_y1 = center_x - half_distance, center_y - half_distance
        end_x2, end_y2 = center_x + half_distance, center_y + half_distance
    else:
        start_x1, start_y1 = center_x - half_distance, center_y - half_distance
        start_x2, start_y2 = center_x + half_distance, center_y + half_distance
        end_x1, end_y1 = center_x - distance, center_y - distance
        end_x2, end_y2 = center_x + distance, center_y + distance
    
    # 触摸设备路径（可通过`adb shell getevent -il`查询）
    touch_device = "/dev/input/event2"
    events = []
    
    # 双指按下
    events.append(f"sendevent {touch_device} 3 57 0")
    events.append(f"sendevent {touch_device} 3 53 {start_x1}")
    events.append(f"sendevent {touch_device} 3 54 {start_y1}")
    events.append(f"sendevent {touch_device} 0 0 0")
    
    events.append(f"sendevent {touch_device} 3 57 1")
    events.append(f"sendevent {touch_device} 3 53 {start_x2}")
    events.append(f"sendevent {touch_device} 3 54 {start_y2}")
    events.append(f"sendevent {touch_device} 0 0 0")
    
    # 分步骤滑动
    step_time = duration // 10
    step_x1 = (end_x1 - start_x1) // 10
    step_y1 = (end_y1 - start_y1) // 10
    step_x2 = (end_x2 - start_x2) // 10
    step_y2 = (end_y2 - start_y2) // 10
    
    for i in range(10):
        current_x1 = start_x1 + step_x1 * i
        current_y1 = start_y1 + step_y1 * i
        current_x2 = start_x2 + step_x2 * i
        current_y2 = start_y2 + step_y2 * i
        
        events.append(f"sendevent {touch_device} 3 57 0")
        events.append(f"sendevent {touch_device} 3 53 {current_x1}")
        events.append(f"sendevent {touch_device} 3 54 {current_y1}")
        events.append(f"sendevent {touch_device} 0 0 0")
        
        events.append(f"sendevent {touch_device} 3 57 1")
        events.append(f"sendevent {touch_device} 3 53 {current_x2}")
        events.append(f"sendevent {touch_device} 3 54 {current_y2}")
        events.append(f"sendevent {touch_device} 0 0 0")
        
        events.append(f"sleep {step_time/1000}")
    
    # 双指抬起
    events.append(f"sendevent {touch_device} 3 57 -1")
    events.append(f"sendevent {touch_device} 0 0 0")
    events.append(f"sendevent {touch_device} 3 57 -1")
    events.append(f"sendevent {touch_device} 0 0 0")
    
    subprocess.run(["adb", "shell", "; ".join(events)], shell=True)

说明 #

• 需先通过adb shell getevent -il查询模拟器的触摸设备路径和事件编码（如ABS_MT_POSITION_X对应3 53）
• 兼容性更强，但实现复杂，需适配不同设备

1. 手动执行ADB命令测试手势是否生效：

   adb shell input touchscreen gesture 0,200,200,100,0 0,600,600,100,0 2,300,300,100,300 2,500,500,100,300 1,300,300,0,310 1,500,500,0,310
   

2. 确认游戏本身支持双指缩放手势（部分游戏有自定义缩放逻辑）

内容的提问来源于stack exchange，提问作者newbie