无障碍适配利器-查询当前聚焦view的id

一、背景

在开发过程中，能够快速找到具体view对于我们效率的提升是很有帮助的，这里推荐一个快速定位到view id的工具Weditor，这个工具可以根据视图得到具体的view Id，详细的使用教程请看[Mac安装WEditor教程 - (jianshu.com)
],在无障碍设配开发过程中，我们需要对具体的view设置是否支持无障碍能力，但是对于复杂的工程，由于嵌套层级过深，有时还存在重复覆盖问题，这时weditor就不好使了，当我们查询具体的view不能聚焦的时候，需要知道点击事件传递到具体到哪一层，方便我们解决问题，在此背景下激发了我开发这个工具类的想法

二、具体代码

2.1具体类

class AccessibilityFindViewIdDelegate(private val context: Context) : View.AccessibilityDelegate() {

    /**
     * 设置Activity页面中View的事件监听
     *
     * @param activity
     */
    public fun setTracker(activity: Activity) {
        // 找到根路径的View
        val contentView = activity.findViewById(android.R.id.content)
        if (contentView != null) {
            setViewTracker(contentView, null)
        }
    }

    /**
     * 设置Fragment页面中View的事件监听
     *
     * @param fragment
     */
    public fun setTracker(fragment: Fragment) {
        val contentView = fragment.getView()
        if (contentView != null) {
            setViewTracker(contentView, fragment)
        }
    }

    /**
     * 设置View上的事件监听
     *
     * @param view
     */
    public fun setTracker(view: View?) {
        if (view != null) {
            setViewTracker(view, null)
        }
    }

    /**
     * 判断view是否需要埋点，目前默认只要可以点击的都是true
     *
     * @param view
     * @return
     */
    private fun needTracker(view: View): Boolean {
        return true
    }

    /**
     * 对每个View添加埋点的监听
     *
     * @param view
     * @param fragment
     */
    private fun setViewTracker(view: View, fragment: Fragment?) {
        if (needTracker(view)) {
            if (fragment != null) {
                view.setTag(1024, fragment)
            }
            view.accessibilityDelegate = this
        }
        if (view is ViewGroup) {
            val childCount = view.childCount
            var index = 0
            while (index < childCount) {
                setViewTracker(view.getChildAt(index), fragment)
                index++
            }
            view.setOnHierarchyChangeListener(object : ViewGroup.OnHierarchyChangeListener {

                override fun onChildViewAdded(parent: View, child: View) {
                    setTracker(parent)
                }

                override fun onChildViewRemoved(parent: View, child: View) {
                    setTracker(parent)
                }
            })
            view.setAccessibilityDelegate(this)
        }
    }

    override fun sendAccessibilityEvent(host: View?, eventType: Int) {
        super.sendAccessibilityEvent(host, eventType)
        if (eventType == AccessibilityEvent.TYPE_VIEW_HOVER_ENTER && host != null) {
            var name: String? = null
            var parentName: String? = null
            var namePackageName: String? = null
            var parentNamePackageName: String? = null
            try {
                name = context.resources.getResourceEntryName(host.id)
                val parentViewGroup = host.parent
                if (parentViewGroup is ViewGroup) {
                    parentName = context.resources.getResourceEntryName(parentViewGroup.id)
                    parentNamePackageName =
                        context.resources.getResourcePackageName(parentViewGroup.id)
                }
                namePackageName = context.resources.getResourcePackageName(host.id)


            } catch (e: Exception) {
            }
            Log.d(
                "FindViewIdDelegate",
                "className:${host} name:${name}  parent:$parentName  packgeName:${namePackageName} parentNamePackageName:$parentNamePackageName"
            )
        }

    }


}

2.2具体使用

image.png

2.3产出日志

image.png

image.png

三、结论
该方法还有待优化