我最后自己做了這個：

public boolean isAccessibilityEnabled(){ int accessibilityEnabled = 0; final String LIGHTFLOW_ACCESSIBILITY_SERVICE = "com.example.test/com.example.text.ccessibilityService"; boolean accessibilityFound = false; try { accessibilityEnabled = Settings.Secure.getInt(this.getContentResolver(),android.provider.Settings.Secure.ACCESSIBILITY_ENABLED); Log.d(LOGTAG, "ACCESSIBILITY: " + accessibilityEnabled); } catch (SettingNotFoundException e) { Log.d(LOGTAG, "Error finding setting, default accessibility to not found: " + e.getMessage()); } TextUtils.SimpleStringSplitter mStringColonSplitter = new TextUtils.SimpleStringSplitter(':'); if (accessibilityEnabled==1){ Log.d(LOGTAG, "***ACCESSIBILIY IS ENABLED***: "); String settingValue = Settings.Secure.getString(getContentResolver(), Settings.Secure.ENABLED_ACCESSIBILITY_SERVICES); Log.d(LOGTAG, "Setting: " + settingValue); if (settingValue != null) { TextUtils.SimpleStringSplitter splitter = mStringColonSplitter; splitter.setString(settingValue); while (splitter.hasNext()) { String accessabilityService = splitter.next(); Log.d(LOGTAG, "Setting: " + accessabilityService); if (accessabilityService.equalsIgnoreCase(ACCESSIBILITY_SERVICE_NAME)){ Log.d(LOGTAG, "We've found the correct setting - accessibility is switched on!"); return true; } } } Log.d(LOGTAG, "***END***"); } else{ Log.d(LOGTAG, "***ACCESSIBILIY IS DISABLED***"); } return accessibilityFound; }

從API級別14開始，還可以通過AccessibilityManager獲取正在運行的輔助function服務：

public static boolean isAccessibilityEnabled(Context context, String id) { AccessibilityManager am = (AccessibilityManager) context .getSystemService(Context.ACCESSIBILITY_SERVICE); List runningServices = am .getEnabledAccessibilityServiceList(AccessibilityEvent.TYPES_ALL_MASK); for (AccessibilityServiceInfo service : runningServices) { if (id.equals(service.getId())) { return true; } } return false; }

要找出您的和所有安裝的輔助function服務的標識，您可以運行以下代碼片段：

public static void logInstalledAccessiblityServices(Context context) { AccessibilityManager am = (AccessibilityManager) context .getSystemService(Context.ACCESSIBILITY_SERVICE); List runningServices = am .getInstalledAccessibilityServiceList(); for (AccessibilityServiceInfo service : runningServices) { Log.i(TAG, service.getId()); } }

在我的例子中，ID看起來像org.your.package / .YourAccessibilityService。

到目前為止，該方法工作可靠。

檢查服務是否啟用

/** * Based on {@link com.android.settingslib.accessibility.AccessibilityUtils#getEnabledServicesFromSettings(Context,int)} * @see AccessibilityUtils */ public static boolean isAccessibilityServiceEnabled(Context context, Class> accessibilityService) { ComponentName expectedComponentName = new ComponentName(context, accessibilityService); String enabledServicesSetting = Settings.Secure.getString(context.getContentResolver(), Settings.Secure.ENABLED_ACCESSIBILITY_SERVICES); if (enabledServicesSetting == null) return false; TextUtils.SimpleStringSplitter colonSplitter = new TextUtils.SimpleStringSplitter(':'); colonSplitter.setString(enabledServicesSetting); while (colonSplitter.hasNext()) { String componentNameString = colonSplitter.next(); ComponentName enabledService = ComponentName.unflattenFromString(componentNameString); if (enabledService != null && enabledService.equals(expectedComponentName)) return true; } return false; }

用法：

boolean enabled = isAccessibilityServiceEnabled(context, MyAccessibilityService.class);

檢測何時啟用或禁用服務

進行callback：

ContentObserver observer = new ContentObserver() { @Override public void onChange(boolean selfChange) { super.onChange(selfChange); boolean accessibilityServiceEnabled = isAccessibilityServiceEnabled(context, MyAccessibilityService.class); //Do something here } };

訂閱：

Uri uri = Settings.Secure.getUriFor(Settings.Secure.ENABLED_ACCESSIBILITY_SERVICES); context.getContentResolver().registerContentObserver(uri, false, observer);

完成后取消訂閱：

context.getContentResolver().unregisterContentObserver(observer);

請注意，這不適用于getEnabledAccessibilityServiceList()方法，因為它的值與Settings.Secure.ENABLED_ACCESSIBILITY_SERVICES值不同步。 這就是為什么我認為使用Settings.Secure.ENABLED_ACCESSIBILITY_SERVICES是一個更好的“一刀切”的方法。

你能跟蹤服務是否正在運行嗎？ 如果無障礙服務啟用不應該也運行？

public class MyAccessibilityService extends AccessibilityService{ public static boolean isEnabled = false; @Override public void onServiceConnected() { isEnabled = true; } @Override public void onDestroy(){ isEnabled = false; }

當您的活動服務剛剛開始時獲取ID。 在您的Activity服務OnSeriviceCeonnected后，所有的初始化調用。 用這個…

AccessibilityServiceInfo serviceInfo = this.getServiceInfo(); String accessibilityId = serviceInfo.getId();

需要Jelly Bean API

然后，您可以使用Martin的代碼(isAccessibilityEnabled)來檢查正在運行的服務。

這需要更多的時間

AccessibilityManager am = (AccessibilityManager) context .getSystemService(Context.ACCESSIBILITY_SERVICE);

AccessibilityManager accessibilityManager = (AccessibilityManager)context.getSystemService(Context.ACCESSIBILITY_SERVICE); List runningservice = accessibilityManager.getEnabledAccessibilityServiceList(AccessibilityServiceInfo.FEEDBACK_ALL_MASK); accessibilityManager.addAccessibilityStateChangeListener(new AccessibilityManager.AccessibilityStateChangeListener() { @Override public void onAccessibilityStateChanged(boolean b) { Toast.makeText(MainActivity.this, "permission "+b, Toast.LENGTH_SHORT).show(); } });

Listner會在狀態改變的時候被調用，你可以跟蹤布爾值來檢查權限，這是迄今為止最簡單和最輕的解決scheme來檢查權限

總結

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