/** Checks whether or not touch to explore is enabled on the system. */
public boolean accessibilityIsAvailable() {
if (!getAccessibilityManager().isEnabled()
|| mContentViewCore.getContentSettings() == null
|| !mContentViewCore.getContentSettings().getJavaScriptEnabled()) {
return false;
}
try {
// Check that there is actually a service running that requires injecting this script.
List<AccessibilityServiceInfo> services =
getAccessibilityManager()
.getEnabledAccessibilityServiceList(
FEEDBACK_BRAILLE | AccessibilityServiceInfo.FEEDBACK_SPOKEN);
return services.size() > 0;
} catch (NullPointerException e) {
// getEnabledAccessibilityServiceList() can throw an NPE due to a bad
// AccessibilityService.
return false;
}
}
