message: ...This is Androidx Migration...
diff: @@ -45,7 +45,6 @@ import android.os.Bundle;
  import android.os.Handler;
  import android.os.HandlerThread;
  import android.support.annotation.NonNull;
  -import android.support.v4.content.ContextCompat;
  import android.text.SpannableString;
  import android.text.SpannableStringBuilder;
  import android.util.Log;
  @@ -61,6 +60,7 @@ import android.widget.ListView;
  import android.widget.NumberPicker;
  import android.widget.TextView;
  import android.widget.Toast;
  +import androidx.core.content.ContextCompat;
  import android.support.v13.app.FragmentCompat;
  import java.io.IOException;
  import java.util.ArrayList;
  