[android] Make default app when bluetooth call button click

<activity
  android:name=".MainActivity"
  android:label="@string/app_name" >
  <intent-filter>
    <action android:name="android.intent.action.MAIN" />
    <category android:name="android.intent.category.LAUNCHER" />
  </intent-filter>
  <intent-filter android:priority="10" >
    <action android:name="android.intent.action.VOICE_COMMAND" />
    <category android:name="android.intent.category.DEFAULT" />
  </intent-filter>
</activity>

 

screenshot

 

도움받은 곳 :  https://android.googlesource.com/platform/packages/apps/VoiceDialer/+/master/AndroidManifest.xml