Android：AccessibilityService辅助功能基础使用(附微信抢红包教程)

// 代码片段1
class MyAccessibilityService : AccessibilityService() {
    override fun onInterrupt() {
    }

    override fun onServiceConnected() {
        super.onServiceConnected()
//        val serviceInfo = AccessibilityServiceInfo()
//        serviceInfo.eventTypes = AccessibilityEvent.TYPES_ALL_MASK//typeNotificationStateChanged|typeWindowStateChanged|typeWindowContentChanged
//        serviceInfo.feedbackType = AccessibilityServiceInfo.FEEDBACK_GENERIC//feedbackGeneric
//        serviceInfo.packageNames = arrayOf("com.tencent.mm")//com.tencent.mm
//        serviceInfo.notificationTimeout = 100
//        serviceInfo.flags = AccessibilityServiceInfo.DEFAULT
////        //android:canRetrieveWindowContent="true"
////        serviceInfo.canRetrieveWindowContent = true
//        setServiceInfo(serviceInfo)
    }

    override fun onAccessibilityEvent(event: AccessibilityEvent?) {
        dispatchEvent(event, rootInActiveWindow)
    }
}

// 代码片段2
<service
    android:name=".access.MyAccessibilityService"
    android:enabled="true"
    android:exported="true"
    android:permission="android.permission.BIND_ACCESSIBILITY_SERVICE">
    <intent-filter>
        <action android:name="android.accessibilityservice.AccessibilityService"/>
    </intent-filter>
    <meta-data
        android:name="android.accessibilityservice"
        android:resource="@xml/accessibility"/>
</service>

// 代码片段3
<?xml version="1.0" encoding="utf-8"?>
<accessibility-service xmlns:android="http://schemas.android.com/apk/res/android"

                       android:accessibilityEventTypes="typeAllMask"
                       android:accessibilityFeedbackType="feedbackGeneric"
                       android:accessibilityFlags="flagReportViewIds"
                       android:canRetrieveWindowContent="true"
                       android:notificationTimeout="100"
                       android:packageNames="com.tencent.mm"/>

// 代码片段4
fun dispatchEvent(event: AccessibilityEvent?, rootInActiveWindow: AccessibilityNodeInfo?) {
    val pkgName = event?.packageName.toString()
    val eventType = event?.getEventType()
    Log.i(TAG, "pkgName:${pkgName}     eventType:${eventType}      className:${event?.getClassName().toString()}      " +
            "event.text:${listToString(event?.text)} event?.getContentChangeTypes():${event?.getContentChangeTypes()}\n")
    when (eventType) {
        AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED -> com.example.zhouzhihui.accessibilitydemo.access.packet.handleNotification(event)//64     1-->click
        AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED, AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED -> {//32 2048
            val className = event.getClassName().toString()
            if (className == "com.tencent.mm.ui.LauncherUI" || className == "com.tencent.mm.ui.mogic.WxViewPager" || className == "android.widget.EditText"/* || className == "android.widget.ListView"*/) {
                com.example.zhouzhihui.accessibilitydemo.access.packet.searchPacket(rootInActiveWindow)
            } else if (className == "com.tencent.mm.plugin.luckymoney.ui.LuckyMoneyReceiveUI") {//com.tencent.mm.plugin.luckymoney.ui.LuckyMoneyPrepareUI
                com.example.zhouzhihui.accessibilitydemo.access.packet.openPacket(rootInActiveWindow)
            } else if (className == "com.tencent.mm.plugin.luckymoney.ui.LuckyMoneyDetailUI") {
                com.example.zhouzhihui.accessibilitydemo.access.packet.closePacket(rootInActiveWindow)
            }
        }
    }
    if (event?.getContentChangeTypes() == AccessibilityEvent.CONTENT_CHANGE_TYPE_TEXT) {
        Withdraw().withDraw(event, rootInActiveWindow)//防消息撤回
    }

    rootInActiveWindow?.recycle()//避免重复创建实例通过recycle方法回收掉nodeInfo（我们自己手动去回收）
}

// 代码片段5
fun handleNotification(event: AccessibilityEvent?) {
    if (event == null) {
        return
    }
    val texts = event.text
    if (!texts.isEmpty()) {
        for (text in texts) {
            val content = text.toString()
            if (content.contains("[微信红包]")) {
                if (event.parcelableData != null && event.parcelableData is Notification) {
                    val notification = event.parcelableData as Notification
                    val pendingIntent = notification.contentIntent
                    try {
                        pendingIntent.send()
                    } catch (e: PendingIntent.CanceledException) {
                        e.printStackTrace()
                    }

                }
            }
        }
    }
}

fun searchPacket(rootInActiveWindow: AccessibilityNodeInfo?) {
    Log.i(TAG, "searchPacket node: ${rootInActiveWindow} childCount: ${rootInActiveWindow?.childCount}   idName: ${rootInActiveWindow?.getViewIdResourceName()}")
    if (rootInActiveWindow?.text.toString() == "领取红包") {
        if (rootInActiveWindow?.isClickable == true) {
            rootInActiveWindow.performAction(AccessibilityNodeInfo.ACTION_CLICK)
        } else {
            var parent: AccessibilityNodeInfo? = rootInActiveWindow?.getParent()
            while (parent != null) {
                if (parent.isClickable) {
                    parent.performAction(AccessibilityNodeInfo.ACTION_CLICK)
                    break
                }
                parent = parent.parent
            }
        }
    } else {
        for (i in 0 until (rootInActiveWindow?.childCount ?: -1)) {
            searchPacket(rootInActiveWindow?.getChild(i))
        }
    }
}

fun openPacket(rootInActiveWindow: AccessibilityNodeInfo?) {
    Log.i(TAG, "openPacket node: ${rootInActiveWindow} childCount: ${rootInActiveWindow?.childCount}   idName: ${rootInActiveWindow?.getViewIdResourceName()}")
    if (rootInActiveWindow?.isClickable == true && rootInActiveWindow?.className?.contains("android.widget.Button") == true) {
        rootInActiveWindow?.performAction(AccessibilityNodeInfo.ACTION_CLICK)
    }
//        node?.traversalAfter
    for (i in 0 until (rootInActiveWindow?.childCount ?: -1)) {
        openPacket(rootInActiveWindow?.getChild(i))
    }
}

fun closePacket(rootInActiveWindow: AccessibilityNodeInfo?) {
    Log.i(TAG, "closePacket node: ${rootInActiveWindow} childCount: ${rootInActiveWindow?.childCount}   idName: ${rootInActiveWindow?.getViewIdResourceName()}")
    if (rootInActiveWindow?.className == "android.widget.LinearLayout" && rootInActiveWindow?.isClickable && TextUtils.isEmpty(rootInActiveWindow?.text)) {
        //className: android.widget.LinearLayout; text: null; error: null; maxTextLength: -1; contentDescription: null; viewIdResName: com.tencent.mm:id/ho;
        rootInActiveWindow?.performAction(AccessibilityNodeInfo.ACTION_CLICK)
        return
    }
    for (i in 0 until (rootInActiveWindow?.childCount ?: -1)) {
        closePacket(rootInActiveWindow?.getChild(i))
    }
}

// 代码片段6 MainActivity.kt
class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        hello.also {
            val isOn = isAccessibilityServiceOn()
            it.text = if (isOn) "服务已经开启" else "点击开启服务"
            it.isEnabled = !isOn
            it.setOnClickListener {
                startActivity(Intent(Settings.ACTION_ACCESSIBILITY_SETTINGS))
            }
        }
    }
}

// 代码片段7 Tools.kt
val TAG = AccessibilityService::class.java.simpleName
fun listToString(list : List<Any>?): String {
    var result = StringBuilder("")
    list?.forEach {
        result.append("${it.toString()}\t")
    }
    return result.toString()
}

fun isPrePagePacket(prePageName: String): Boolean {
    return prePageName == "com.tencent.mm.plugin.luckymoney.ui.LuckyMoneyReceiveUI" || prePageName == "com.tencent.mm.plugin.luckymoney.ui.LuckyMoneyDetailUI"
}

fun Context.isAccessibilityServiceOn(): Boolean {
    var service = "${packageName}/${MyAccessibilityService::class.java.canonicalName}"
    var enabled = Settings.Secure.getInt(applicationContext.contentResolver, Settings.Secure.ACCESSIBILITY_ENABLED)
    var splitter = TextUtils.SimpleStringSplitter(':')
    if (enabled == 1) {
        var settingValue = Settings.Secure.getString(applicationContext.contentResolver, Settings.Secure.ENABLED_ACCESSIBILITY_SERVICES)
        if (settingValue != null) {
            splitter.setString(settingValue)
            while (splitter.hasNext()) {
                var accessibilityService = splitter.next()
                if (accessibilityService.equals(service, ignoreCase = true)) {
                    return true
                }
            }
        }
    }
    return false
}