1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.settingslib.accessibility; 18 19 import android.accessibilityservice.AccessibilityServiceInfo; 20 import android.content.Context; 21 import android.provider.Settings; 22 import android.view.accessibility.AccessibilityManager; 23 24 import java.util.List; 25 26 /** 27 * A helper class to assist determining the state of the accessibility button that can appear 28 * within the software-rendered navigation area. 29 */ 30 public class AccessibilityButtonHelper { isRequestedByMagnification(Context ctx)31 public static boolean isRequestedByMagnification(Context ctx) { 32 return Settings.Secure.getInt(ctx.getContentResolver(), 33 Settings.Secure.ACCESSIBILITY_DISPLAY_MAGNIFICATION_NAVBAR_ENABLED, 0) == 1; 34 } 35 isRequestedByAccessibilityService(Context ctx)36 public static boolean isRequestedByAccessibilityService(Context ctx) { 37 final AccessibilityManager accessibilityManager = ctx.getSystemService( 38 AccessibilityManager.class); 39 List<AccessibilityServiceInfo> services = 40 accessibilityManager.getEnabledAccessibilityServiceList( 41 AccessibilityServiceInfo.FEEDBACK_ALL_MASK); 42 if (services != null) { 43 for (int i = 0, size = services.size(); i < size; i++) { 44 if ((services.get(i).flags 45 & AccessibilityServiceInfo.FLAG_REQUEST_ACCESSIBILITY_BUTTON) 46 != 0) { 47 return true; 48 } 49 } 50 } 51 return false; 52 } 53 isRequested(Context ctx)54 public static boolean isRequested(Context ctx) { 55 return isRequestedByMagnification(ctx) || isRequestedByAccessibilityService(ctx); 56 } 57 } 58