AppleScript窗口缩放应用：解决Spotlight启动时前置应用识别错误

当通过Spotlight启动lhalf.app时，该应用会自动成为当前最前端进程，但它本身没有任何窗口，导致你的代码尝试获取它的窗口时触发「无效索引」错误。而在Script Editor中测试时，脚本取的是Script Editor自身的窗口，因此不会报错。

修改AppleScript代码，通过排除自身进程+筛选最近激活的带窗口应用，精准定位到你真正需要调整的前置应用：

tell application "System Events"
    -- 获取当前.app的进程名（自动匹配打包后的名字）
    set myAppName to name of current application
    
    -- 筛选规则：排除自身、必须有窗口，按最后激活时间倒序排列
    set targetApps to every application process whose name is not myAppName and windows is not {}
    set sortedApps to sort targetApps by last activated date descending
    
    -- 取最近激活的目标应用
    set targetApp to item 1 of sortedApps
    
    -- 将目标应用设为前台（确保窗口操作生效）
    set frontmost of targetApp to true
    
    -- 获取目标应用的主窗口
    set mainWindow to first window of targetApp whose value of attribute "AXMain" is true
    
    -- 设置窗口位置与尺寸
    set position of mainWindow to {0, 22}
    set size of mainWindow to {800, 600}
end tell

因为脚本需要控制其他应用的窗口，必须给lhalf.app开启系统权限：

1. 打开「系统设置」→「隐私与安全性」→「辅助功能」
2. 点击右下角锁图标解锁，点击「+」按钮
3. 找到并添加你的lhalf.app，开启权限开关

为避免无符合条件应用时静默报错，可添加错误捕获逻辑：

try
    tell application "System Events"
        set myAppName to name of current application
        set targetApps to every application process whose name is not myAppName and windows is not {}
        
        if targetApps is {} then
            error "没有可调整窗口的应用"
        end if
        
        set sortedApps to sort targetApps by last activated date descending
        set targetApp to item 1 of sortedApps
        set frontmost of targetApp to true
        
        set mainWindow to first window of targetApp whose value of attribute "AXMain" is true
        set position of mainWindow to {0, 22}
        set size of mainWindow to {800, 600}
    end tell
on error errMsg
    display dialog "操作失败：" & errMsg buttons {"确定"} default button 1
end try

内容的提问来源于stack exchange，提问作者vicky