Android accessibility service detect notification-白红宇

Android accessibility service detect notification

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发布时间：2019-06-22

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0 down vote

I'm trying to make my app detect whenever a notification is displayed. I've enabled it in the settings app andonServiceConnecteddoes get called, however when I create a notification or receive an e-mail through the gmail app nothing happens,onAccessibilityEventdoes not get called.

Android manifest:

NotificationService.java

package com.test.slide; import android.accessibilityservice.AccessibilityService; import android.accessibilityservice.AccessibilityServiceInfo; import android.view.accessibility.AccessibilityEvent; public class NotificationService extends AccessibilityService {
          @Override public void onAccessibilityEvent(AccessibilityEvent event) {
          System.out.println("onAccessibilityEvent"); if (event.getEventType() == AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED) {
          System.out.println("notification: " + event.getText()); } } @Override protected void onServiceConnected() {
          System.out.println("onServiceConnected"); AccessibilityServiceInfo info = new AccessibilityServiceInfo(); info.eventTypes = AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED; info.notificationTimeout = 100; info.feedbackType = AccessibilityEvent.TYPES_ALL_MASK; setServiceInfo(info); } @Override public void onInterrupt() {
          System.out.println("onInterrupt"); } }

Thanks for any help.

edited

asked Sep 23 '12 at 17:18

396 1 4 20

	Did you found the solution? i have exactly the same problem. –
	alanv's answer worked for me –
	For what system version are you programming? ICS? jelly bean? –
	Jelly bean 4.1.1 –

2 Answers

up vote 2 down vote accepted

Accessibility services in Android 4.0 and above can behave strangely if there is no meta-data tag defined in the manifest. Try defining the meta-data as in the examples below. You should continue to use setServiceInfo() to maintain backward compatibility with pre-4.0 devices.

Also, I would recommend specifying a feedback type that is specific to your service, rather than using "all".

AndroidManifest.xml

res/xml/accessibilityservice.xml

There was an error in your feedbackType. Corrected below. Still, consider using a more specific feedback type.

NotificationService.java

@Override protected void onServiceConnected() {
           AccessibilityServiceInfo info = new AccessibilityServiceInfo(); info.eventTypes = AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED; info.feedbackType = AccessibilityServiceInfo.FEEDBACK_ALL_MASK; info.notificationTimeout = 100; setServiceInfo(info); }

edited

answered Sep 24 '12 at 1:33

442 1 10

Now you are defining theserviceInfoin XML and code. You may leave out the code part of AccessibilityServiceInfo because the xml is defined in the manifest. –

On the contrary, you must define it in both places for compatibility with pre-ICS devices. –

up vote 1 down vote

The app using AccessibilityService needed to have a permission from settings>Accessibility in order to access the system events. Allow permission from settings . This may work

check this link

转载于:https://my.oschina.net/zhuzihasablog/blog/110534

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