获取当前注册的 MediaBrowserServices 列表只在蓝牙 MediaBrowserService 中得到结果

Question

I'm trying to build an app where one can start audio playback from WearOS. From what I can tell this requires an app on the phone to obtain a list of possible songs to be played. To do that I want to use the MediaBrowserService, like this example does.

However when I try to reproduce the listing of MediaBrowserServices, I only get the "Bluetooth audio" MediaBrowserService. The example app on the other hand works fine and displays all apps.

Here is the code I'm using:

override fun onStart() {
    super.onStart()
    val mediaBrowserIntent = Intent(MediaBrowserServiceCompat.SERVICE_INTERFACE)

    val packageManager = this.packageManager
    val services = packageManager.queryIntentServices(mediaBrowserIntent, PackageManager.GET_RESOLVED_FILTER)
    val tv: TextView = findViewById(R.id.helloworld)
    val res = StringBuilder()
    for(info in services) {
        res.appendLine(info.serviceInfo.loadLabel(packageManager).toString())
    }
    tv.text = res.toString()
}

This is adapted from here .

Do you know what might be causing the issue?

Answer 1

It looks like you need to properly handle the package visibility .
Try to add <queries> section to your manifest file with the correct intent filter signature:

<queries>
    <intent>
      <action android:name="android.media.browse.MediaBrowserService" />
    </intent>
</queries>

The sample app works because it targets SDK 29.