Android中带ImageView的RecyclerView

Question

我正在遵循本教程：

Android Studio Tutorial - Expandable RecyclerView

成功。

但是我想要这样更丰富多彩：

Group中显示了一些漂亮的图像。

请帮助我，谢谢。

我的子班是Product.class

public class Product implements Parcelable{
   public final String name;
   public final int icon;

   public Product(String name, int icon) {
         this.name = name;
         this.icon = icon;
   }

   protected Product(Parcel in) {
         name = in.readString();
         icon = in.readInt();
   }

   public static final Creator<Product> CREATOR = new Creator<Product>() {

       public Product createFromParcel(Parcel in) {
            return new Product(in);
       }

       public Product[] newArray(int size) {
            return new Product[size];
       }
    };

    public int describeContents() {
          return 0;
    }

    public void writeToParcel(Parcel dest, int flags) {
        dest.writeString(name);
        dest.writeInt(icon);
    }
  }

我的组是Company.class：

 public class Company extends ExpandableGroup<Product>{
   public Company(String title, List<Product> items) {
      super(title, items);
   }
 }

CompanyViewHolder.java：

 public class CompanyViewHolder extends GroupViewHolder {
   TextView mTextView;
   ImageView arrow;
   private ImageView icon;

 public CompanyViewHolder(View itemView) {
   super(itemView);
   mTextView = itemView.findViewById(R.id.textView);
   arrow = itemView.findViewById(R.id.arraw);
   icon = itemView.findViewById(R.id.company_icon);
 }

 public void bind(Company company){
    mTextView.setText(company.getTitle());
    icon.setImageResource ...??
 }

Answer 1

在该示例中检查GenreDataFactory.java

public class GenreDataFactory {



public static List<Genre> makeGenres() {
    return Arrays.asList(makeRockGenre(),
        makeJazzGenre(),
        makeClassicGenre(),
        makeSalsaGenre(),
        makeBluegrassGenre());
  }

  public static List<MultiCheckGenre> makeMultiCheckGenres() {
    return Arrays.asList(makeMultiCheckRockGenre(),
        makeMultiCheckJazzGenre(),
        makeMultiCheckClassicGenre(),
        makeMultiCheckSalsaGenre(),
        makeMulitCheckBluegrassGenre());
  }

  public static List<SingleCheckGenre> makeSingleCheckGenres() {
    return Arrays.asList(makeSingleCheckRockGenre(),
        makeSingleCheckJazzGenre(),
        makeSingleCheckClassicGenre(),
        makeSingleCheckSalsaGenre(),
        makeSingleCheckBluegrassGenre());
  }

  public static Genre makeRockGenre() {
    return new Genre("Rock", makeRockArtists(), R.drawable.ic_electric_guitar);
  }

  public static MultiCheckGenre makeMultiCheckRockGenre() {
    return new MultiCheckGenre("Rock", makeRockArtists(), R.drawable.ic_electric_guitar);
  }

  public static SingleCheckGenre makeSingleCheckRockGenre() {
    return new SingleCheckGenre("Rock", makeRockArtists(), R.drawable.ic_electric_guitar);
  }

  public static List<Artist> makeRockArtists() {
    Artist queen = new Artist("Queen", true);
    Artist styx = new Artist("Styx", false);
    Artist reoSpeedwagon = new Artist("REO Speedwagon", false);
    Artist boston = new Artist("Boston", true);

    return Arrays.asList(queen, styx, reoSpeedwagon, boston);
  }

  public static Genre makeJazzGenre() {
    return new Genre("Jazz", makeJazzArtists(), R.drawable.ic_saxaphone);
  }

  public static MultiCheckGenre makeMultiCheckJazzGenre() {
    return new MultiCheckGenre("Jazz", makeJazzArtists(), R.drawable.ic_saxaphone);
  }

  public static SingleCheckGenre makeSingleCheckJazzGenre() {
    return new SingleCheckGenre("Jazz", makeJazzArtists(), R.drawable.ic_saxaphone);
  }

  public static List<Artist> makeJazzArtists() {
    Artist milesDavis = new Artist("Miles Davis", true);
    Artist ellaFitzgerald = new Artist("Ella Fitzgerald", true);
    Artist billieHoliday = new Artist("Billie Holiday", false);

    return Arrays.asList(milesDavis, ellaFitzgerald, billieHoliday);
  }

  public static Genre makeClassicGenre() {
    return new Genre("Classic", makeClassicArtists(), R.drawable.ic_violin);
  }

  public static MultiCheckGenre makeMultiCheckClassicGenre() {
    return new MultiCheckGenre("Classic", makeClassicArtists(), R.drawable.ic_violin);
  }

  public static SingleCheckGenre makeSingleCheckClassicGenre() {
    return new SingleCheckGenre("Classic", makeClassicArtists(), R.drawable.ic_violin);
  }

  public static List<Artist> makeClassicArtists() {
    Artist beethoven = new Artist("Ludwig van Beethoven", false);
    Artist bach = new Artist("Johann Sebastian Bach", true);
    Artist brahms = new Artist("Johannes Brahms", false);
    Artist puccini = new Artist("Giacomo Puccini", false);

    return Arrays.asList(beethoven, bach, brahms, puccini);
  }

  public static Genre makeSalsaGenre() {
    return new Genre("Salsa", makeSalsaArtists(), R.drawable.ic_maracas);
  }

  public static MultiCheckGenre makeMultiCheckSalsaGenre() {
    return new MultiCheckGenre("Salsa", makeSalsaArtists(), R.drawable.ic_maracas);
  }

  public static SingleCheckGenre makeSingleCheckSalsaGenre() {
    return new SingleCheckGenre("Salsa", makeSalsaArtists(), R.drawable.ic_maracas);
  }

  public static List<Artist> makeSalsaArtists() {
    Artist hectorLavoe = new Artist("Hector Lavoe", true);
    Artist celiaCruz = new Artist("Celia Cruz", false);
    Artist willieColon = new Artist("Willie Colon", false);
    Artist marcAnthony = new Artist("Marc Anthony", false);

    return Arrays.asList(hectorLavoe, celiaCruz, willieColon, marcAnthony);
  }

  public static Genre makeBluegrassGenre() {
    return new Genre("Bluegrass", makeBluegrassArtists(), R.drawable.ic_banjo);
  }

  public static MultiCheckGenre makeMulitCheckBluegrassGenre() {
    return new MultiCheckGenre("Bluegrass", makeBluegrassArtists(), R.drawable.ic_banjo);
  }

  public static SingleCheckGenre makeSingleCheckBluegrassGenre() {
    return new SingleCheckGenre("Bluegrass", makeBluegrassArtists(), R.drawable.ic_banjo);
  }

  public static List<Artist> makeBluegrassArtists() {
    Artist billMonroe = new Artist("Bill Monroe", false);
    Artist earlScruggs = new Artist("Earl Scruggs", false);
    Artist osborneBrothers = new Artist("Osborne Brothers", true);
    Artist johnHartford = new Artist("John Hartford", false);

    return Arrays.asList(billMonroe, earlScruggs, osborneBrothers, johnHartford);
  }

}