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Android AccessibilityService

1. 创建

1. create xml config in res/xml/config_accessibility_service

<?xml version="1.0" encoding="utf-8"?>
<accessibility-service xmlns:android="http://schemas.android.com/apk/res/android"
    android:accessibilityEventTypes="typeAllMask"
    android:accessibilityFeedbackType="feedbackAllMask"
    android:accessibilityFlags="flagDefault"
    android:canPerformGestures="true"
    android:description="@string/accessibility_service_description"
    android:notificationTimeout="100" />

2. create AccessibilityService

public class ApnSwitchService extends AccessibilityService {

    private static final String TAG = ApnSwitchService.class.getSimpleName();

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


    //apparently this method is called every time a event occurs
    @Override
    public void onAccessibilityEvent(AccessibilityEvent accessibilityEvent) {
        Log.d(TAG, "onAccessibilityEvent: " + accessibilityEvent);
        //autoClick(2000, 100, 950, 581);
    }


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

    @Override
    public void onInterrupt() {

    }

    public void autoClick(int startTimeMs, int durationMs, int x, int y) {
        boolean isCalled = dispatchGesture(gestureDescription(startTimeMs, durationMs, x, y), null, null);
        System.out.println(isCalled);
    }

    public GestureDescription gestureDescription(int startTimeMs, int durationMs, int x, int y) {
        Path path = new Path();
        path.moveTo(x, y);
        return createGestureDescription(new GestureDescription.StrokeDescription(path, startTimeMs, durationMs));
    }

    public GestureDescription createGestureDescription(GestureDescription.StrokeDescription... strokes) {
        GestureDescription.Builder builder = new GestureDescription.Builder();
        for (GestureDescription.StrokeDescription stroke : strokes) {
            builder.addStroke(stroke);
        }
        return builder.build();
    }
}

3. AndroidManifest.xml

<service
       android:name="com.hbzxt.apn_switch.ApnSwitchService"
       android:enabled="true"
       android:label="ApnSwitchService"
       android:permission="android.permission.BIND_ACCESSIBILITY_SERVICE"
       android:exported="true">
       <intent-filter>
           <action android:name="android.accessibilityservice.AccessibilityService"/>
       </intent-filter>

       <meta-data
           android:name="android.accessibilityservice"
           android:resource="@xml/config_accessibility_service"/>
</service>

2. 无障碍权限

AccessibilityService 不能用户开启, 当开启了无障碍功能和开启应用无障碍(两个地方需要开启, 应用重装后也需要开启) 后AccessibilityManagerService会自动开启

public int checkAccessibilityServicePermission(boolean isJumpSet) {
    AccessibilityManager accessibilityManager = (AccessibilityManager) context.getSystemService(Context.ACCESSIBILITY_SERVICE);
    boolean isAccessibilityEnabled = accessibilityManager.isEnabled();
    List<AccessibilityServiceInfo> enableAccessibilityServiceInfos = accessibilityManager.getEnabledAccessibilityServiceList(AccessibilityServiceInfo.FEEDBACK_ALL_MASK);

    boolean isAppEnabled = false;
    for (AccessibilityServiceInfo accessibilityServiceInfo : enableAccessibilityServiceInfos) {
        if (accessibilityServiceInfo.getId().toLowerCase().contains(context.getPackageName())) {
            isAppEnabled = true;
            break;
        }
    }
    if (isJumpSet && !isAccessibilityEnabled || !isAppEnabled) {
        Toast.makeText(context, "自动功能需要打开辅助功能, 和应用授权", Toast.LENGTH_LONG).show();
        Intent myIntent = new Intent(Settings.ACTION_ACCESSIBILITY_SETTINGS);
        myIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        context.startActivity(myIntent);
    }
    int result = isAccessibilityEnabled && isAppEnabled ? 0 : (isAccessibilityEnabled ? 2 : 1);
    return result;
}


 AccessibilityManager accessibilityManager = (AccessibilityManager) context.getSystemService(Context.ACCESSIBILITY_SERVICE);
 boolean isAccessibilityEnabled = accessibilityManager.isTouchExplorationEnabled();

 public void enableAccessibility(Context context) {
        String accessibilityServices = Settings.Secure.getString(
                context.getContentResolver(),
                Settings.Secure.ENABLED_ACCESSIBILITY_SERVICES
        );

        if (accessibilityServices == null) {
            accessibilityServices = "";
        } else if (!accessibilityServices.isEmpty()) {
            accessibilityServices = ":$accessibilityServices";
        }
        Settings.Secure.putString(
                context.getContentResolver(),
                Settings.Secure.ENABLED_ACCESSIBILITY_SERVICES,
                "${activity.applicationInfo.packageName}/${ForegroundDetectorService::class.java.canonicalName}$accessibilityServices"
        );
        Settings.Secure.putString(
                context.getContentResolver(),
                Settings.Secure.ACCESSIBILITY_ENABLED, "1"
        );
 }

Reference

+A Complete Guide to Accessibility Service Part 2 — Android +AccessibilityService原理及实践

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