Android Studio：无法解析符号

Question

I am unable to identify the problem. The songCollection.searchById ( songCollection is always underlined red) saying that the symbol cannot be identified even though I already have a SongCollection class.

public void handleSelection(View view) {
    String resourceId = AppUtil.getResourceId(getContext(), view);
    Song selectedSong = songCollection.searchById(resourceId);

    AppUtil.popMessage(getContext(), "Streaming Song: " + selectedSong.getTitle());

    sendDataToActivity(selectedSong);
}

song collection class

public class SongCollection {
   private Song[] songs = new Song[5];

   public SongCollection() {
    prepareSong();
   }

Therefore, I cannot play my application or make my songs clickable

Answer 1

可能是您没有在这样的地方实例化SongSelection：

SongSelection songSelection = new SongSelection();