Answer 1

Based on Android 1.5 sources (BatteryStatsImpl.java) notification is being sent only if signal changes between following states:

SIGNAL_STRENGTH_NONE_OR_UNKNOWN (99)
SIGNAL_STRENGTH_GREAT (16-32)
SIGNAL_STRENGTH_GOOD (8-15)
SIGNAL_STRENGTH_MODERATE (4-7)
SIGNAL_STRENGTH_POOR (0-3)

So in your case signal strength changes within the same range and you don't receive notifications.

I guess it is done this way to save battery life.

Answered by: Joyce922 | Posted: 26-02-2022

Answer 2

I think this method is not working very well because as written in the javadoc, onSignalStrengthChanged() is deprecated since api 2.0, and replaced by onSignalStrengthsChanged() (note the "s"), but unfortunatly this method is private !

There is an open issue about that, it seems google has removed the method for unknow reason (maybe because its not working well as you have noticed it), and it will be available in a next sdk release.

You just have to be patient then and vote here to speed up dev process !

Answered by: Brooke935 | Posted: 26-02-2022

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