Slashdot Mirror
Bluetooth Battery Level Indicators May Soon Be Coming To Android (androidandme.com)
The folks over at XDA Developers are reporting that Android may be getting a new feature that could help users identify how much battery life is remaining in their Bluetooth wireless headphones. The feature for "[retrieving] battery level information of [a] remote device" was discovered in the Android Open Source Project (AOSP). Android and Me reports: This hasn't made it to final release just yet, but when it does, it will make it easy for users to quickly ascertain how much battery life is remaining in the Bluetooth headphones that are connected to their device. It doesn't just mean support for Bluetooth headphones, either, as Bluetooth speakers and other accessories that run on battery power will be supported, too. Unfortunately there's no telling on when this feature will see the light of day for the public. There's no set timeframe between a feature that's part of the AOSP and rolling out in a final, public release of the mobile operating system. Some manufacturers have already built support for this feature into their phones, including OnePlus, Samsung, and LG. So while it might not be a completely brand new feature on Android, it would still be good for the Android platform as a whole to support the feature in the stock build.
Is this a feature that was lost at some point? I have a crappy bluetooth speaker a friend bought me one time or another (it's called a Durapod if it matters). I'm 99% sure it's a rather old bluetooth standard (~3?), and it's always shown a battery meter in the notification tray (Android 4.4.4 & 6.0.1).
Now it's accuracy is a whole other matter, but again, it was like $30 at BestBuy so I'm pretty sure that parts normal. Come to think of it, I have some crappy near forgotten Mpow work out headphones that are BT and I think they do this too... But my expensive Plantronics (that have BT4 and NFC) don't...
Sex. Drugs, and Unix.
There is a "battery service" defined in the standard.
(At least for BLE, aka Bluetooth Smart, but I assume also for Bluetooth Proper, as well.)
While nobody is forced to implement it, or implement it correctly, It's there - and built into the software development kits for the Systems On a Chip. If your device uses a common coin cell and the default power handling, you can just turn it on in the build and have it in your application - and any Bluetooth (or BLE) central can use it.
The BLE one gives you its best guess of the percentage of battery life remaining as a number from 0 10 100.
Now some batteries (for instance, Lithium Thionyl Chloride) can't be measured accurately (or at all before the last 15% of their lifetime). So battery services for them tend to hand you bogus numbers, if there isn't a "gas guage" chip counting switching regulator cycles, and thus electrons, to make a halfway decent guess. But that approach gets less accurate as end-of-life approaches, when you really want it to get better as you approach the wall.
Bantam Dominique roosters crow a four-note song. Once you've heard it as "Happy BIRTHday" you can't NOT hear it that way
I can... there are heaps of music streaming apps.
For your off-the-shelf NAS vendors:
Synology has "DS Audio"
QNAP has Qmusic
I'm sure every other one has their own app too.
If you NAS supports UPNP/DLNA, there's literally dozens, maybe hundreds of apps for that.
To answer your question directly: It can. You're just a dumbass who couldn't google "android wifi stream music"
The first result for "android wifi stream music nas" is a stackexchange post answering your exact question 2 years ago.