Recent hit and miss Google Cast discovery using CastMediaControlIntent.categoryForCast() (Android)

[GoogleCodeExporter]

Some apps use this construct to be notified of Google Cast device discovery:

MediaRouteSelector mediaRouteSelector = new MediaRouteSelector.Builder() 
.addControlCategory(CastMediaControlIntent.categoryForCast(APP_ID)).build();

Since some time (at least a few days), this doesn't work reliably anymore. The 
outcome is somewhat unpredictable and either:

1. you get no cast device discovered
2. you get only some devices discovered
3. you get all devices discovered

When the app is in the 1 or 2 state, launching Google Play Music and taping the 
cast button usually results in the app going in the 3 state.

So there's something broken in current Google Play Services with 
CastMediaControlIntent.categoryForCast().

For now, the workaround that 100% works (assuming an app that handle all Google 
Cast devices) is to use:

addControlCategory(CastMediaControlIntent.CATEGORY_CAST)

Although deprecated, it works and all Google Cast devices are consistently 
discovered.

Original issue reported on code.google.com by pujos.mi...@gmail.com on 16 Dec 2015 at 12:11

[GoogleCodeExporter]

If an app doesn't handle all Google Cast devices (for example video), it can 
still use the workaround and filter devices with CastDevice.hasCapability() in 
the relevant callback.

Original comment by pujos.mi...@gmail.com on 16 Dec 2015 at 12:27

[GoogleCodeExporter]

Could you give us more information about your testing environment: 
- Version of Google Play Services
- Android build
- Google Cast SDK version

Also, could you please reproduce the issue and share the receiver logs? 

Original comment by na...@google.com on 18 Dec 2015 at 7:48

• Changed state: NeedInfo

[GoogleCodeExporter]

- Version of Google Play Services
Google Play services 8.4.89 (2428711-248)

- Android build
5.1.1, LMY48Y

- Google Cast SDK version
rev 27

A few days ago I had the same issue on my Nexus 5 with Android 6.0.
Since then I updated it to 6.0.1 and Play Services is now 8.4.89 (2428711-470).
I cannot reprod this issue on this device but this is because of another 
problem: only a single Guest cast devices is discovered out of 3 devices on my 
network. But that is a different issue than the one this bug wants to address.

Original comment by pujos.mi...@gmail.com on 19 Dec 2015 at 5:38

[GoogleCodeExporter]

We'll look into the issue. This ticket will be updated accordingly.

Original comment by na...@google.com on 22 Dec 2015 at 12:16

[GoogleCodeExporter]

Original comment by na...@google.com on 22 Dec 2015 at 12:17

• Changed state: Acknowledged

[GoogleCodeExporter]

Is there any device you could reproduce this issue on? If so, please send a 
feedback report from the Chromecast app on that device after successfully 
reproducing the issue with the text "for Issue 709" in the description. 

Original comment by na...@google.com on 22 Dec 2015 at 11:28

• Changed state: NeedInfo