无障碍

无障碍

• • 基本配置
  • 可以监听的事件类型
  • 常规用法
  • 节点的基本属性
  • 可以模拟的ACTION类型
  • 可执行的全局操作
  • 模拟执行手势

基本配置

继承AccessibilityService，编写自己的无障碍服务

public class MagicalService extends AccessibilityService {

    @Override
    protected void onServiceConnected() {
        super.onServiceConnected();
        //服务启动成功
    }

    @Override
    public void onAccessibilityEvent(AccessibilityEvent event) {
        //事件回调
    }

    @Override
    public void onInterrupt() {
        //服务中断
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
    }
}

AndroidManifest中注册

<!-- 无障碍 -->
<service
    android:name=".service.MagicalService"
    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/magical" />

</service>

无障碍配置

<?xml version="1.0" encoding="utf-8"?>
<accessibility-service xmlns:android="http://schemas.android.com/apk/res/android"
    android:accessibilityEventTypes="typeAllMask" 想要监听的事件类型
    android:accessibilityFeedbackType="feedbackGeneric"  反馈类型
    android:canPerformGestures="true"  是否可以执行手势
    android:canRetrieveWindowContent="true" 允许窗口检索内容
    android:description="@string/app_name" 无障碍服务描述，用户开启的时候可以看到
    android:notificationTimeout="10"> 相同事件的最小访问间隔

</accessibility-service>

可以监听的事件类型

typeAllMask：接收所有事件。
-------窗口事件相关（常用）---------
typeWindowStateChanged：监听窗口状态变化，比如打开一个popupWindow，dialog，Activity切换等等。
typeWindowContentChanged：监听窗口内容改变，比如根布局子view的变化。
typeWindowsChanged：监听屏幕上显示的系统窗口中的事件更改。 此事件类型只应由系统分派。
typeNotificationStateChanged：监听通知变化，比如notifacation和toast。
-----------View事件相关--------------
typeViewClicked：监听view点击事件。
typeViewLongClicked：监听view长按事件。
typeViewFocused：监听view焦点事件。
typeViewSelected：监听AdapterView中的上下文选择事件。
typeViewTextChanged：监听EditText的文本改变事件。
typeViewHoverEnter、typeViewHoverExit：监听view的视图悬停进入和退出事件。
typeViewScrolled：监听view滚动，此类事件通常不直接发送。
typeViewTextSelectionChanged：监听EditText选择改变事件。
typeViewAccessibilityFocused：监听view获得可访问性焦点事件。
typeViewAccessibilityFocusCleared：监听view清除可访问性焦点事件。
------------手势事件相关---------------
typeGestureDetectionStart、typeGestureDetectionEnd：监听手势开始和结束事件。
typeTouchInteractionStart、typeTouchInteractionEnd：监听用户触摸屏幕事件的开始和结束。
typeTouchExplorationGestureStart、typeTouchExplorationGestureEnd：监听触摸探索手势的开始和结束。

常规用法

//获取当前所在类
event.getClassName()
//根据显示内容来获取节点
getRootInActiveWindow().findAccessibilityNodeInfosByText("")
//根据控件ID来获取对应节点 API18以上
getRootInActiveWindow().findAccessibilityNodeInfosByViewId("android:id/list")

//然后对获取到的响应节点做一些操作 例如点击、改变状态、设置内容等。
//以及通过可以通过监听通知栏变化截取短信验证码自动填充等操作。

节点的基本属性

builder.append("; boundsInParent: ").append(mBoundsInParent);
builder.append("; boundsInScreen: ").append(mBoundsInScreen);

builder.append("; packageName: ").append(mPackageName);
builder.append("; className: ").append(mClassName);
builder.append("; text: ").append(mText);
builder.append("; error: ").append(mError);
builder.append("; maxTextLength: ").append(mMaxTextLength);
builder.append("; stateDescription: ").append(mStateDescription);
builder.append("; contentDescription: ").append(mContentDescription);
builder.append("; tooltipText: ").append(mTooltipText);
builder.append("; viewIdResName: ").append(mViewIdResourceName);

builder.append("; checkable: ").append(isCheckable());
builder.append("; checked: ").append(isChecked());
builder.append("; focusable: ").append(isFocusable());
builder.append("; focused: ").append(isFocused());
builder.append("; selected: ").append(isSelected());
builder.append("; clickable: ").append(isClickable());
builder.append("; longClickable: ").append(isLongClickable());
builder.append("; contextClickable: ").append(isContextClickable());
builder.append("; enabled: ").append(isEnabled());
builder.append("; password: ").append(isPassword());
builder.append("; scrollable: ").append(isScrollable());
builder.append("; importantForAccessibility: ").append(isImportantForAccessibility());
builder.append("; visible: ").append(isVisibleToUser());
builder.append("; actions: ").append(mActions);

可以模拟的ACTION类型

AccessibilityNodeInfo.ACTION_CLICK
AccessibilityNodeInfo.ACTION_LONG_CLICK
AccessibilityNodeInfo.ACTION_SET_TEXT
AccessibilityNodeInfo.ACTION_CUT
AccessibilityNodeInfo.ACTION_COPY
AccessibilityNodeInfo.ACTION_PASTE
AccessibilityNodeInfo.ACTION_SCROLL_FORWARD
AccessibilityNodeInfo.ACTION_SCROLL_BACKWARD
        
AccessibilityNodeInfo.ACTION_FOCUS
AccessibilityNodeInfo.ACTION_CLEAR_FOCUS
AccessibilityNodeInfo.ACTION_SELECT
AccessibilityNodeInfo.ACTION_CLEAR_SELECTION
AccessibilityNodeInfo.ACTION_ACCESSIBILITY_FOCUS
AccessibilityNodeInfo.ACTION_CLEAR_ACCESSIBILITY_FOCUS
AccessibilityNodeInfo.ACTION_NEXT_AT_MOVEMENT_GRANULARITY
AccessibilityNodeInfo.ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY
AccessibilityNodeInfo.ACTION_NEXT_HTML_ELEMENT
AccessibilityNodeInfo.ACTION_PREVIOUS_HTML_ELEMENT
AccessibilityNodeInfo.ACTION_SET_SELECTION
AccessibilityNodeInfo.ACTION_EXPAND
AccessibilityNodeInfo.ACTION_COLLAPSE
AccessibilityNodeInfo.ACTION_DISMISS

可执行的全局操作

/**
     * Action to go back.
     */
    public static final int GLOBAL_ACTION_BACK = 1;

    /**
     * Action to go home.
     */
    public static final int GLOBAL_ACTION_HOME = 2;

    /**
     * Action to toggle showing the overview of recent apps. Will fail on platforms that don't
     * show recent apps.
     */
    public static final int GLOBAL_ACTION_RECENTS = 3;

    /**
     * Action to open the notifications.
     */
    public static final int GLOBAL_ACTION_NOTIFICATIONS = 4;

    /**
     * Action to open the quick settings.
     */
    public static final int GLOBAL_ACTION_QUICK_SETTINGS = 5;

    /**
     * Action to open the power long-press dialog.
     */
    public static final int GLOBAL_ACTION_POWER_DIALOG = 6;

    /**
     * Action to toggle docking the current app's window
     */
    public static final int GLOBAL_ACTION_TOGGLE_SPLIT_SCREEN = 7;

    /**
     * Action to lock the screen
     */
    public static final int GLOBAL_ACTION_LOCK_SCREEN = 8;

    /**
     * Action to take a screenshot
     */
    public static final int GLOBAL_ACTION_TAKE_SCREENSHOT = 9;

    /**
     * Action to send the KEYCODE_HEADSETHOOK KeyEvent, which is used to answer/hang up calls and
     * play/stop media
     * @hide
     */
    public static final int GLOBAL_ACTION_KEYCODE_HEADSETHOOK = 10;

    /**
     * Action to trigger the Accessibility Button
     * @hide
     */
    public static final int GLOBAL_ACTION_ACCESSIBILITY_BUTTON = 11;

    /**
     * Action to bring up the Accessibility Button's chooser menu
     * @hide
     */
    public static final int GLOBAL_ACTION_ACCESSIBILITY_BUTTON_CHOOSER = 12;

    /**
     * Action to trigger the Accessibility Shortcut. This shortcut has a hardware trigger and can
     * be activated by holding down the two volume keys.
     * @hide
     */
    public static final int GLOBAL_ACTION_ACCESSIBILITY_SHORTCUT = 13;

    /**
     * Action to show Launcher's all apps.
     * @hide
     */
    public static final int GLOBAL_ACTION_ACCESSIBILITY_ALL_APPS = 14;

模拟执行手势

Path path = new Path();
path.moveTo(300, 300);

//手势分发 最小版本24 7.0
dispatchGesture(new GestureDescription.Builder().addStroke(new GestureDescription.StrokeDescription(path, 100, 2000)).build(),
        new GestureResultCallback() {
            @Override
            public void onCompleted(GestureDescription gestureDescription) {
                super.onCompleted(gestureDescription);
            }

            @Override
            public void onCancelled(GestureDescription gestureDescription) {
                super.onCancelled(gestureDescription);
            }
        }, null);

    }

本文地址：https://blog.csdn.net/gitzzp/article/details/109356475