I'm testing Googl's 'Channel Changing Example' on my Sony Google TV.
I'm connected to a DVB (Digital Video Broadcasting) through the HDMI port.
When i'm running the example the number of retrieved channels is 0.
Just to be clear, I can see the TV channels using the 'Live TV' in the TV itself.
You need to make sure that your selected device has a channel lineup. Based on the fact that you're using DVB, I'm guessing you're not in the US, which means you aren't really using this in a supported country. However, you can fake it by going to Settings > Video input > Configured devices > (whatever your TV source is) > Edit channel lineup and then go through the prompts. This will download the list of channels for your connected set top box (again, this is probably not going to be your real lineup, but enough for you to test out the sample.
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I'm trying to understand: is there a way to check if Android device supports DolbyDigital (AC3).
I found a broadcast action ACTION_HDMI_AUDIO_PLUG that indicates wether HDMI connected or not. Also it sends an array of all the supported encodings via the value EXTRA_ENCODINGS. But, as I understand, those are the values that the TV supports, not the Android device itself.
I know that the Chromecast is being launched automatically with any app that has the "Cast" icon. That means we can be using directly a phone or tablet without the TV controller to initiate a connection.
HDMI-CEC has something to do with this.
TV switches automatically.
What I would like to know is if it would be possible to end the connection with the Chromecast and not land on the Chromecast homepage like right now. I would like to come back on the signal that I had before the "Cast", which could be a channel of the TV for example, and this, without the TV controller.
Currently, it is impossible to come back without not using the "Source" button of the TV controller.
Does anyone have a solution that could help me?
So, in CEC there is a provision to tell the TV you're done. It's called <Inactive Source>.
Chromecast uses <Active Source> to turn on the TV and change inputs it it.
It could use <Inactive Source> to indicate to the TV that it has stopped sending video.
<Inactive Source>, however, varies by TV.
I have followed the CastHelloText-android example on github. When I use either the receiver they specified in the demo or the default receiver, the cast icon shows up in my application.
However, as soon as I change the app_id to be the one provided by the Google Cast SDK Developer Console for my registered application, the icon doesn't show.
I've tried rebooting my chromecast and my android device. All to no avail.
Any suggestions?
Make sure the serial number for the device that you have registered on the dev console is correct, it is sometimes hard to read the serial number (take a picture and zoom in). Also make sure the checkbox that sends the serial number is checked when you setup you chromecast. If cast icon doesn't show up for your own app-id but shows up for the other one, then there is an issue with your app/device registration.
I had the same issue as Kimble above. I started with the serial number on my Nvidia shield, which didn't work because that's not the serial number for the Chromecast. The proper serial number can be found in the settings menu under "Chromecast built-in".
I know I am late to the party, but here is a probably more up-to-date solution. Following this documentation solved my problem: https://developers.google.com/cast/docs/registration#find_device_serial_number
According to the documentation, for cast-enabled Android TVs, the serial number can be found in the following way:
Android TV (ATV) devices have multiple serial numbers associated with them. The software (Cast) serial number can be obtained either by casting the Cast Developer Console page to the ATV device as outlined above, or by putting the ATV device into developer mode and looking in the Cast settings for the software serial number.
To put your ATV device into developer mode, navigate to Settings > System > About > Android TV OS build, and click on the build several times until the device notifies you that you are in developer mode. To find the serial number once in developer mode, navigate either to Settings > Device Preferences > Chromecast built-in or Settings > System > Cast, depending on your ATV model, and you'll see the software serial number displayed.
Also, since just by looking at the screen there is no way to disambiguate zero and capital O, or small L and capital I, etc., you can simply cast the page in the link above to read out the serial number for you:
To find the serial number of any device, you can cast the Cast Developer Console page to the device:
Click the Cast button (as if you were casting this page).
The prompt displays Cast tab and lists the available devices.
From the drop-down menu, select the device for which you want to obtain the serial number.
For display devices, the serial number displays on the TV screen and is read aloud on the TV speakers (to help disambiguate 0's and O's).
For audio devices, the serial number is read aloud on the speaker being cast to.
These days , i implement a blue tooth paring function on android platform,say in details:
The master device is Google TV(3.2), the slave device is blue tooth keyboard,both are HID device.
The Keyboard can be easily put in to discoverable status, When the TV bootup first time ,In TV setup guide, i need to let the tv paring with keyboard,
As you know, in generall, enable bluetooth on TV side we need get the user permition, then can connect.Then my question happend is that i don't want to pop up a dialog to get permition, is there some body can tell me how to do ?
Thanks!
I found a simple way - in the Android code tree, in external\bluetooth\bluez\src\device.c:
/* If our IO capability is NoInputNoOutput use medium security
* level (i.e. don't require MITM protection) else use high
* security level */
if (capability == 0x03)
sec_level = BT_IO_SEC_MEDIUM;
else
sec_level = BT_IO_SEC_HIGH;
//david10000 add
if (device_is_david10000_BTDEV(device)) {
sec_level = BT_IO_SEC_MEDIUM;
}
This means we can low level the security to let your special device connect automatically.
Another way is you can program it to auto fill the passkey/pin etc. when you get the Android pair request.
If you have this problem, try this, it works for me.
When I plug an USB flash drive to my Logitech Revue, it is mounted into /mnt/media/usb.C7E3-1E08.
C7E3-1E08 looks like to be some usb device id, but I want my app to show the label of the USB-drive (like MYFLASH).
GoogleTV knows this label, because in logcat I have this:
I/MediaVolume(141): New volume - Label:[FLASH4GB] FsType:vfat UUID:C7E3-1E08
Here FLASH4GB is the label of my USB drive. Of course, I can try to parse logcat in my app, but maybe there is some better way to get this label?
Also if I go Home-Notifications, I can see "Synced USB Storage "FLASH4GB"".
Currently, there is no public API for getting the label of volume. There is a chance we will make related API public at some point, but timeline is not decided.