Android: How do you check if a particular AccessibilityService is enabled
I worked this one out myself in the end:
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;
}
Since API Level 14, it is also possible to obtain the enabled accessibility services through the AccessibilityManager
:
public static boolean isAccessibilityServiceEnabled(Context context, Class<? extends AccessibilityService> service) {
AccessibilityManager am = (AccessibilityManager) context.getSystemService(Context.ACCESSIBILITY_SERVICE);
List<AccessibilityServiceInfo> enabledServices = am.getEnabledAccessibilityServiceList(AccessibilityServiceInfo.FEEDBACK_ALL_MASK);
for (AccessibilityServiceInfo enabledService : enabledServices) {
ServiceInfo enabledServiceInfo = enabledService.getResolveInfo().serviceInfo;
if (enabledServiceInfo.packageName.equals(context.getPackageName()) && enabledServiceInfo.name.equals(service.getName()))
return true;
}
return false;
}
Usage:
boolean enabled = isAccessibilityServiceEnabled(context, MyAccessibilityService.class);
Checking if the service is enabled
/**
* Based on {@link com.android.settingslib.accessibility.AccessibilityUtils#getEnabledServicesFromSettings(Context,int)}
* @see <a href="https://github.com/android/platform_frameworks_base/blob/d48e0d44f6676de6fd54fd8a017332edd6a9f096/packages/SettingsLib/src/com/android/settingslib/accessibility/AccessibilityUtils.java#L55">AccessibilityUtils</a>
*/
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;
}
Usage:
boolean enabled = isAccessibilityServiceEnabled(context, MyAccessibilityService.class);
Detecting when the service is enabled or disabled
Make a callback:
ContentObserver observer = new ContentObserver() {
@Override
public void onChange(boolean selfChange) {
super.onChange(selfChange);
boolean accessibilityServiceEnabled = isAccessibilityServiceEnabled(context, MyAccessibilityService.class);
//Do something here
}
};
Subscribe:
Uri uri = Settings.Secure.getUriFor(Settings.Secure.ENABLED_ACCESSIBILITY_SERVICES);
context.getContentResolver().registerContentObserver(uri, false, observer);
Unsubscribe when you're done:
context.getContentResolver().unregisterContentObserver(observer);
Note that this doesn't work with the getEnabledAccessibilityServiceList()
approach since its values are out-of-sync with the Settings.Secure.ENABLED_ACCESSIBILITY_SERVICES
values. That's why I think using Settings.Secure.ENABLED_ACCESSIBILITY_SERVICES
is a better one-size-fits-all approach.