问题
I'm trying to write a very basic android accessibility service that shows a message and vibrates when any notification is raised. I've tried testing it by sending an email myself on my phone (I figured that would show some notification). But I have not seen any notifications.
My service code looks like
public class NotifierService extends AccessibilityService {
@Override
public void onAccessibilityEvent(AccessibilityEvent evt) {
Toast.makeText(this, "Got event from " + evt.getPackageName(), Toast.LENGTH_SHORT)
.show();
Vibrator v = (Vibrator) getSystemService(VIBRATOR_SERVICE);
v.vibrate(new long[] { 0, 250, 250, 250, 250, 250, 250, 250, 250 }, -1);
}
@Override
public void onInterrupt() { }
}
I have verified that the service is running and I have enabled it in the accessibility menu of the phone. And the manifest looks like this (some parts are removed that are not relevant):
<uses-permission android:name="android.permission.VIBRATE" />
<application>
<activity
android:name=".MyActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service android:name=".NotifierService" android:enabled="true" >
<intent-filter>
<action android:name="android.accessibilityservice.AccessibilityService" />
</intent-filter>
</service>
</application>
MyActivity
is just an activity with a button for starting/stopping the service.
回答1:
I added a meta data element inside the service tag
<meta-data android:name="android.accessibilityservice" android:resource="@xml/accessibilityservice" />
And in the xml resources file I have
<accessibility-service xmlns:android="http://schemas.android.com/apk/res/android"
android:accessibilityEventTypes="typeNotificationStateChanged"
android:accessibilityFeedbackType="feedbackAllMask"
android:notificationTimeout="100" />
回答2:
Accessibility Service is overkill for your purposes, you should use NotificationListenerService. The NotificationListenerService is much easier to implement and safer for users (privacy reasons).
回答3:
One other way to configure the accessibility service is to Override the OnServiceConnected()
method of your AccessibilityService
from java code.
@Override
protected void onServiceConnected() {
AccessibilityServiceInfo info = getServiceInfo();
info.packageNames = new String[]
{
"com.packagename1","com.packagename2"
};
info.eventTypes = AccessibilityEvent.TYPE_NOTIFICATION_STATE_CHANGED;
this.setServiceInfo(info);
}
Reference
- https://developer.android.com/training/accessibility/service.html
来源:https://stackoverflow.com/questions/9675611/android-accessibility-service