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Step 2: Set Up TvInputService

Now, it's time to set up the TvInputService. Keep in mind that all the code on this page must be implemented before it will compile and install correctly.

Create Minimal TvInputService

Create an Android Service class that extends TvInputService.

Example of a minimal implementation of TvInputService:

package com.example.android.sampletvinput; // replace with your package

import android.media.tv.TvInputService;

public class RichTvInputService extends TvInputService {
    @Override
    public Session onCreateSession(String inputId) {
        return null;
    }
}

Define Input Service's Resource XML File

Each input service must have a resource XML file which defines common input attributes. Here's an example of such a file, located in res/xml/richtvinputservice.xml:

<?xml version="1.0" encoding="utf-8"?>
<tv-input xmlns:android="http://schemas.android.com/apk/res/android"
  android:canRecord="true"
  android:setupActivity="com.example.android.sampletvinput.SetupActivity" />

Important Details

Activity Required? Notes
android:setupActivity Yes This will be launched when the user navigates to Settings → LiveTV→ Sync Source → <input name>

Declare Your TV Input Service in the Manifest

Example of TvInputService in the application section of AndroidManifest.xml:

<service
    android:name=".RichTvInputService"
   android:label="My Input Name"
    android:permission="android.permission.BIND_TV_INPUT">
 
    <!-- Required filter used by the system to launch our account service. -->
        <intent-filter>
            <action android:name="android.media.tv.TvInputService" />
        </intent-filter>
    <!--
   An XML file which describes this input. This provides pointers to the
    SetupActivity to the system/TV app.
   -->
    <meta-data
        android:name="android.media.tv.input"
        android:resource="@xml/richtvinputservice" />
</service>

Important Details

Activity Required? Input Notes
android:label Yes "My Input Name" Put your own service name here
android:permission Yes "android.permission.BIND_TV_INPUT" This gives Android permission to allow the service to connect the TV input to the system.
<intent-filter> Yes <action> A filter used by the system to launch the service.
android:name Yes "android.media.tv.input" It must be the correct name for Android to recognize the service correctly. The resource must point to the structured XML file defined below.

Define SetupActivity

To add logic to the app, a SetupActivity class (call it whatever you want) needs to be added. Example of a SetupActivity class to invoke the activity:

import android.app.Activity;
import android.os.Bundle;

public class SetupActivity extends Activity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.rich_setup); // create rich_setup.xml
    }
}

The SetupActivity should be created as a class as well as in the AndroidManifest XML file (see below).

Create the rich_setup XML file and define your layout there. Example of rich_setup.xml inside the layout folder:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">
</LinearLayout>

Example of SetupActivity in the AndroidManifest:

<activity android:name=".SetupActivity" >
 <intent-filter>
        <action android:name="android.intent.action.MAIN" />
 </intent-filter>
</activity>

Checkpoint - Your Input Name Appears Under Sync Source

Do the steps below to verify that you have done everything correctly to this point:

  1. Build and install your APK onto Fire TV.
  2. Navigate to Settings > Live TV > Sync Sources.
  3. Your input name should appear under the menu.
  4. Click on your name in the menu.
  5. Setup Activity should be launched.
What you should see if Android Studio connects to your device

If running and installing from Android Studio, an option for Fire TV should appear in the devices section.

Troubleshooting

The application is not showing up in Sync Sources

Get the device log:

Get the device log (Linux or Mac):
adb logcat | grep "LiveTvSettings\|TIFUtils"
Get the device log (Windows)
adb logcat | findstr "LiveTvSettings/|TIFUtils"

If you see something like:

TIFUtils: <your application> is not a configurable input. Removing from input list
LiveTvSettings: TvInput(s) found: .... <which doesn't include your application>

Most likely, the TvInputService has not been correctly defined To resolve this, verify the following:

  • Has the Fire TV device been updated to the latest software?
    • Navigating to Settings -> My Fire TV -> About -> Check for Updates. Click on this and update if needed.
  • Does the InputService have correct permissions?
  • Does the InputService have the correct intent-filter?
  • Does the InputService have the correct meta-data defined?
  • Does the InputService's meta-data link to the correct XML resource?
  • Does the XML resource have the SetupActivity defined? Is the SetupActivity valid?

I’ve tried everything above, but it’s still not working

  • Open a terminal and search the logs in the ProviderRegistry:
ProviderRegistry logs (Linux or Mac):
adb logcat | grep ProviderRegistry
ProviderRegistry logs (Windows)
adb logcat | findstr ProviderRegistry
  • On your Fire TV:
    • Go to Settings > My Account > Sync Amazon Content.
    • After a few seconds you should see logs like this:
08-06 17:09:05.684   694   757 I ProviderRegistry: No change for InstalledProvider(configuration=ProviderConfiguration(packageName=com.example.android.sampletvinput, logoId=1254252374292, rowId=null, defaultRank=1, defaultSortOrder=NONE, showBroadcastRatingsFlag=false, tvInputsSupported=false, qualifierId=, supportedContent=[LINEAR], eventRowId=null, featureBlacklist=[], userProviderPreference=UserProviderPreference(mProviderId=, mRank=2147483647, mSortOrder=NONE), stationCount=4)
  • If your app name doesn't appear in the log as an InstalledProvider, then it's not in the allow list properly. The package name should be the same as what you submitted to be on the allow list. Reach out to your Amazon contact to have your debug package name and production package name added to the allow list.

Next Steps

Go to the next step: Step 3: Insert Your First Channel.


Last updated: Feb 24, 2021