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README
Apache-2.0

Android-Accessibility-Api

中文 | English

安卓无障碍服务Api, 为了简化无障碍服务使用,并使用 Kotlin 以提供简洁的Api。

[TOC]

基础导航

(图片加载过慢可到 Gitee 查看)

查看代码
//无障碍服务声明 未开启会跳转设置页面提示开启服务,并抛出异常 终止执行
requireBaseAccessibility()
toast("下拉通知栏..")
delay(1000)
toast("快捷设置..")
//操作之间需要适当延时等待
delay(1000)
//下拉通知栏快捷设置
quickSettings()
delay(1000)
//返回操作
back()
delay(500)
//返回操作
back()
delay(1000)
//电源菜单
powerDialog()
delay(500)
back()
delay(1000)
//进入最近任务页面
recents()
delay(1000)
back()
delay(1000)
//Home 按键 / 返回桌面
home()
delay(100)

更多操作:

方法 说明
lockScreen() 锁屏,需要Android P
screenShot() 触发系统截屏,需要Android P
splitScreen() 触发系统分屏,需要Android P

视图检索

提取文字

requireBaseAccessibility()
//使用 ScreenTextFinder() 来搜索屏幕上的文字
val ts = ScreenTextFinder().find().joinToString("\n\n")

withContext(Dispatchers.Main) {
    AlertDialog.Builder(act).apply {
        setTitle("提取文字:")
        setMessage(ts)
        show()
    }
}

视图搜索

  1. 提供一个基础类 ViewFinder, 并封装一个 ViewFinderWithMultiCondition 来指定搜索条件,实现快速搜索;查看所有方法:view_finder_api.kt
  2. 最新添加 SmartFinder,支持多条件(AND, OR)搜索,扩展性极高

ViewFinder 主要方法:

方法 说明
findFirst(includeInvisible: Boolean = false): ViewNode? 立即搜索,返回满足条件的第一个结果
includeInvisible: 是否包含不可见元素
findAll(includeInvisible: Boolean = false): Array<ViewNode> 立即搜索,返回满足条件的所有结果
waitFor(waitMillis: Long = 30000): ViewNode? 等待搜索,在指定时间内循环搜索(视图更新),超时返回null
require(waitMillis: Long = WAIT_MILLIS): ViewNode 等待超时抛出异常
findByDepths(vararg depths: Int): ViewNode? 指定深度索引搜索
exist(): Boolean 是否存在 (findFirst() != null)
attachCoroutine() 支持协程调用,支持cancel()打断搜索

示例1: 等待 Chrome 打开 > 展开菜单

//等待无障碍开启 默认时间30s,超时将抛出异常
waitBaseAccessibility()
toast("start chrome after 1s")
delay(1000)
//打开Chrome
val targetApp = "com.android.chrome"
act.startActivity(act.packageManager.getLaunchIntentForPackage(targetApp))
//等待页面
if (
    waitForApp(targetApp, 5000).also {
        toast("wait " + if (it) "success" else "failed")
    }
) {
    //id 搜索,点击打开菜单
    withId("menu_button").tryClick()
}

示例2: 文本操作

查看代码
requireBaseAccessibility()
//editor() 指定编辑框
editor().require().apply { // this is ViewNode
    repeat(5) {
        //追加文本
        appendText(".x")
        delay(500)
    }
    delay(1000)
    //清空文本
    text = ""
    delay(1000)
    //设置文本
    text = "123456"
    delay(1000)
    //选择文本
    setSelection(0, 5)
    delay(1000)
	//清除选择
    clearSelection()
    //失去焦点
    clearFocus()
}
  1. 提供自定义搜索条件

搜索所有可点击的视图:

requireBaseAccessibility()
//自定义条件搜索
val s = findAllWith { it: AccessibilityNodeInfo -> 
    it.isClickable
}.joinToString("\n\n")

withContext(Dispatchers.Main) {
    AlertDialog.Builder(act).apply {
        setTitle("可点击节点:")
        setMessage(s)
        show()
    }
}
  1. SmartFinder

扩展性极高,支持多条件(AND, OR)搜索

更多已支持的条件见:SmartFinderConditions.kt

//SF 为 SmartFinder 缩写
SF.text("SmartFinder测试").findFirst()
//等效:
SF.where(_text eq "SmartFinder测试").findFirst()

//搜索 文本为123 或者 id为text1
SF.text("123").or().id("text1").findFirst()

原始AND,OR

//搜索 所有isChecked
SF.where { 
    it.isChecked
}.find()

SF.where(IdCondition("view_id")).or(RTextEqCondition("[0-9]+")).find()
//等效:
SF.id("view_id").or().matchText("[0-9]+").find()

支持Group

// (text=="111" && desc=="111") || (text=="222" && desc=="222")
SF.where(SF.text("111").desc("111"))
            .or(SF.text("222").desc("222"))
            .find()

中缀表达式

//使用中缀表达式
(SF where text("1111") or text("2222")
        and id("111") or longClickable()).findAll()
  1. 协程支持

添加 attachCoroutine 方法,搜索等待可及时中断

fun run(act: Activity) = runBlocking {
    val outterJob = coroutineContext[Job]
    val searchJob = GlobalScope.async {
        val t = SF.attachCoroutine()//attach当前协程上下文,需要主动调用
          .containsText("周三").waitFor(10000)
        AlertDialog.Builder(act).apply {
            setMessage(t.toString())
            withContext(Dispatchers.Main) {
                show()
            }
        }
    }
    searchJob.invokeOnCompletion {
        outterJob?.cancel()
    }
    delay(3000)
    //取消搜索测试
    searchJob.cancel()
}
  1. 条件扩展

封装自定义搜索条件,使调用起来更简洁 库中搜索条件全部实现位于 SmartFinderConditions.kt

例如 定义使用正则匹配Node文本

Step 1.
class TextMatcherCondition(private val regex: String) : MatchCondition {
	//此处注意直接创建Regex,防止在搜索时重复创建;另外可直接检查正则表达式有效性
    private val reg = regex.toRegex()
    override fun invoke(node: AcsNode) =
        node.text?.toString()?.let {
            reg.matches(it)
        } ?: false
}

此时,已经可以这样使用:

SF.where(TextMatcherCondition("[0-9]+")).findAll()

追究简洁,可进行扩展方法:

Step 2.
fun ConditionGroup.matchText(reg: String) = link(TextMatcherCondition(reg))

之后可简化调用

SF.matchText("[0-9]+").findAll()

视图节点(ViewNode)

根据ViewFinder搜索得到 ViewNode,可进行的操作详见接口:ViewOperation.kt

全局手势

全局手势可以点击/长按任意坐标,执行路径手势。

示例

查看代码
class DrawableAction : Action {
    override val name: String
        get() = "手势画图 - Rect - Circle - Oval"

    @RequiresApi(Build.VERSION_CODES.N)
    override suspend fun run(act: Activity) {
        requireBaseAccessibility()
        requireGestureAccessibility()
        act.startActivity(Intent(act, DrawableActivity::class.java))
        toast("1s后开始绘制,请不要触摸屏幕")
        delay(1000)

        //设置相对屏幕 非必须
        setScreenSize(500, 500)
        //指定点转路径手势
        gesture(
            2000L, arrayOf(
                100 t 100,
                100 t 200,
                200 t 200,
                200 t 100,
                100 t 100
            )
        )
        delay(800)
        //点击clear按钮
        withText("clear").tryClick()
        //使用Path
        drawCircle()
        delay(800)
        withText("clear").tryClick()
        drawOval()
    }

    @RequiresApi(Build.VERSION_CODES.N)
    fun drawCircle() {
        val p = Path().apply {
            //此处路径坐标为绝对坐标
            addOval(RectF(500f, 500f, 800f, 800f), Path.Direction.CW)
        }
        gesture(2000L, p) {
            toast("打断")
        }
    }

    //AdapterRectF 会根据设置的相对屏幕大小换算
    @RequiresApi(Build.VERSION_CODES.N)
    fun drawOval() {
        val p = Path().apply {
            //使用AdapterRectF 会根据设置的相对屏幕尺寸将坐标转换
            addOval(AdapterRectF(200f, 200f, 300f, 300f), Path.Direction.CW)
        }
        gesture(2000L, p)
    }

    infix fun <A, B> A.t(that: B): Pair<A, B> = Pair(this, that)
}

Api文档

手势Api全部需要Android N+;代码必须执行于非主线程

展开查看
方法 说明
fun setScreenSize(width: Int, height: Int) 设置屏幕相对坐标
fun gesture(
duration: Long,
points: Array<Pair<Int, Int>>,
onCancel: Function0? = null
): Boolean
根据点坐标生成路径 执行手势
fun gesture(
duration: Long,
path: Path,
onCancel: Function0? = null
): Boolean
根据Path执行手势
fun gestureAsync(
duration: Long,
points: Array<Pair<Int, Int>>
)
异步执行手势
fun gestures(
duration: Long,
ppss: Array<Array<Pair<Int, Int>>>,
onCancel: Function0? = null
): Boolean
多路径手势
fun click(x: Int, y: Int) 点击; x,y 相对坐标
fun longClick(x: Int, y: Int) 长按; x,y 相对坐标
fun swipe(x1: Int, y1: Int, x2: Int, y2: Int, dur: Int) 两点间滑动
fun scrollUp(): Boolean 向上滑动
fun scrollDown(): Boolean 向下滑动

使用

由于部分系统版本启动支持手势的无障碍服务会造成系统卡顿(掉帧),所以本库分为两个服务来设计(若无需手势功能,可不实现手势服务)。

引入 Android-Accessibility-Api

  1. Add it in your root build.gradle at the end of repositories:
allprojects {
	repositories {
		//...
		maven { url 'https://jitpack.io' }
	}
}
  1. Add the dependency
dependencies {
	implementation 'com.github.Vove7:Android-Accessibility-Api:Tag'
}

the TAG is

创建你的服务

基础服务

用来支持 布局检索,视图操作

  1. 定义你的 BaseAccessibilityService
展开查看 BaseAccessibilityService
class BaseAccessibilityService : AccessibilityApi() {

    //启用 页面更新 回调
    override val enableListenAppScope: Boolean = true
    
    //页面更新回调
    override fun onPageUpdate(currentScope: AppScope) {
        Log.d("TAG", "onPageUpdate: $currentScope")
    }
}
  1. 服务注册
<service
    android:name=".service.BaseAccessibilityService"
    android:description="@string/base_ser_desc"
    android:label="BaseService Demo"
    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/base_accessibility_config" />
</service>
  1. base_accessibility_config.xml
点击展开 res/xml/base_accessibility_config.xml
<?xml version="1.0" encoding="utf-8"?>
<accessibility-service xmlns:android="http://schemas.android.com/apk/res/android"
    android:accessibilityEventTypes="typeWindowStateChanged"
    android:accessibilityFeedbackType="feedbackAllMask"
    android:accessibilityFlags="flagIncludeNotImportantViews|flagReportViewIds|flagRetrieveInteractiveWindows|flagRequestEnhancedWebAccessibility"
    android:canRetrieveWindowContent="true"
    android:description="@string/base_ser_desc"
    android:notificationTimeout="10"
    android:canRequestEnhancedWebAccessibility="true"
    android:settingsActivity=".MainActivity"
    android:summary="基础导航/视图检索操作"/>
<!--    android:canRequestFilterKeyEvents="true"-->
<!--flagRequestFilterKeyEvents-->

其中 android:accessibilityEventTypes="typeWindowStateChanged" 可能会在视图搜索有延迟刷新视图树的问题, 可使用 android:accessibilityEventTypes="typeAllMask" 替换

手势服务

用于执行手势,Android N+可用

  1. 定义 GestureAccessibilityService
展开查看 GestureAccessibilityService
class GestureAccessibilityService : AccessibilityService() {
    override fun onCreate() {
        super.onCreate()
        //must call
        AccessibilityApi.gestureService = this
    }
    override fun onDestroy() {
        super.onDestroy()
        //must call
        AccessibilityApi.gestureService = null
    }
    override fun onInterrupt() {}
    override fun onAccessibilityEvent(event: AccessibilityEvent?) {}
}
  1. 服务注册
<service
    android:name=".service.GestureAccessibilityService"
    android:description="@string/ges_ser_desc"
    android:label="Gesture Service Demo"
    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/gesture_accessibility_config" />
</service>
  1. gesture_accessibility_config.xml
点击展开 res/xml/gesture_accessibility_config.xml

和基础服务配置区别仅为 android:canPerformGestures="true"

<accessibility-service xmlns:android="http://schemas.android.com/apk/res/android"
    android:accessibilityEventTypes=""
    android:accessibilityFeedbackType=""
    android:accessibilityFlags=""
    android:canPerformGestures="true"
    android:canRetrieveWindowContent="false"
    android:description="@string/ges_ser_desc"
    android:notificationTimeout="10"
    android:packageNames=""
    android:settingsActivity=".MainActivity"
    android:summary="执行手势" />

额外配置

在 Application 中初始化:

指定 BASE_SERVICE_CLSGESTURE_SERVICE_CLS

override fun onCreate() {
    super.onCreate()
    AccessibilityApi.apply {
        BASE_SERVICE_CLS = BaseAccessibilityService::class.java
        GESTURE_SERVICE_CLS = GestureAccessibilityService::class.java
    }
}

合并服务

如果你想使用一个服务来完成,可使用如下配置

  1. 创建服务
class MyAccessibilityService : AccessibilityApi() {
    //启用 页面更新 回调
    override val enableListenAppScope: Boolean = true
    override fun onCreate() {
        //同时设置
        baseService = this
        AccessibilityApi.gestureService = this
        super.onCreate()
    }
    override fun onDestroy() {
        //同时设置
        baseService = null
        AccessibilityApi.gestureService = null
        super.onDestroy()
    }
    //页面更新回调
    override fun onPageUpdate(currentScope: AppScope) {
        Log.d("TAG", "onPageUpdate: $currentScope")
    }
}
  1. 清单注册
<service
    android:name=".service.MyAccessibilityService"
    android:description="@string/ser_desc"
    android:label="Service Demo"
    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_config" />
</service>
  1. res/xml/accessibility_config.xml
点击展开 accessibility_config.xml
<?xml version="1.0" encoding="utf-8"?>
<accessibility-service xmlns:android="http://schemas.android.com/apk/res/android"
    android:accessibilityEventTypes="typeWindowStateChanged"
    android:accessibilityFeedbackType="feedbackAllMask"
                       android:accessibilityFlags="flagIncludeNotImportantViews|flagReportViewIds|flagRetrieveInteractiveWindows|flagRequestEnhancedWebAccessibility"
    android:canRetrieveWindowContent="true"
    android:description="@string/base_ser_desc"
    android:notificationTimeout="10"
    android:canPerformGestures="true"
    android:canRequestEnhancedWebAccessibility="true"
    android:settingsActivity=".MainActivity"
    android:summary="基础导航/视图检索操作"/>
<!--    android:canRequestFilterKeyEvents="true"-->
<!--flagRequestFilterKeyEvents-->
  1. Application 初始化配置
AccessibilityApi.apply {
    BASE_SERVICE_CLS = MyAccessibilityService::class.java
    GESTURE_SERVICE_CLS = MyAccessibilityService::class.java
}

更多 Api 可在下列文件查看

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简介

安卓无障碍服务Api, 为了简化无障碍服务使用,并使用 Kotlin 以提供简洁的Api。 展开 收起
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git@gitee.com:Vove/Android-Accessibility-Api.git
Vove
Android-Accessibility-Api
Android-Accessibility-Api
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