Java 如何将BaseAdapter转换为RecyclerAdapter
因此，我想将我的Java 如何将BaseAdapter转换为RecyclerAdapter,java,android-recyclerview,Java,Android Recyclerview,因此，我想将我的GridView更改为recycleraview，然后我不得不将BaseAdapter更改为RecyclerAdapter。 我已经尝试过进行更改，但我不知道如何将代码切换到RecyclerAdapter。 下面是我的BaseAdapter的外观： class AlbumAdapter extends BaseAdapter { private Activity activity; private ArrayList<HashMap< String,
GridViewrecycleraviewBaseAdapterRecyclerAdapterRecyclerAdapterBaseAdapterclass AlbumAdapter extends BaseAdapter {
private Activity activity;
private ArrayList<HashMap< String, String >> data;
public AlbumAdapter(Activity a, ArrayList < HashMap < String, String >> d) {
activity = a;
data = d;
}
public int getCount() {
return data.size();
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
AlbumViewHolder holder = null;
if (convertView == null) {
holder = new AlbumViewHolder();
convertView = LayoutInflater.from(activity).inflate(
R.layout.album_row, parent, false);
holder.galleryImage = (ImageView) convertView.findViewById(R.id.galleryImage);
holder.gallery_count = (TextView) convertView.findViewById(R.id.gallery_count);
holder.gallery_title = (TextView) convertView.findViewById(R.id.gallery_title);
convertView.setTag(holder);
} else {
holder = (AlbumViewHolder) convertView.getTag();
}
holder.galleryImage.setId(position);
holder.gallery_count.setId(position);
holder.gallery_title.setId(position);
HashMap < String, String > song = new HashMap < String, String > ();
song = data.get(position);
try {
holder.gallery_title.setText(song.get(Function.KEY_ALBUM));
holder.gallery_count.setText(song.get(Function.KEY_COUNT));
Glide.with(activity)
.load(new File(song.get(Function.KEY_PATH))) // Uri of the picture
.into(holder.galleryImage);
} catch (Exception e) {}
return convertView;
}
}
class AlbumViewHolder {
ImageView galleryImage;
TextView gallery_count, gallery_title;
}
ArrayList data=new ArrayList（）；
//我假设你已经输入了数据，所以你不会像我一样传递null。
cardlistview=findviewbyd（R.id.cardlistview）；
albumAdapter=新的albumAdapter（您的\u arraysOfHashMap）；
RecyclerView.LayoutManager mLayoutManager=新的LinearLayoutManager（getApplicationContext（））；
设置布局管理器（mLayoutManager）；
设置适配器（albumAdapter）；
public class AlbumAdapter extends RecyclerView.Adapter<AlbumAdapter.ViewHolder> {
private static final String KEY_ALBUM = "KEY_ALBUM";
private static final String KEY_COUNT = "KEY_COUNT";
private static final String KEY_PATH = "KEY_PATH";
private itemClickInterface clickInterface;
//private List<String> data;
private ArrayList<HashMap<String, String >> data;
// public AlbumAdapter(itemClickInterface clickInterface, List<String> data) { // Forget about this if your data is not an array of Strings.
// public AlbumAdapter(itemClickInterface clickInterface, ArrayList<HashMap< String, String >> data) { // Forget about this if you're not ready to pass an onclick interface
public AlbumAdapter(ArrayList<HashMap< String, String >> data) {
this.data = data;
// this.clickInterface = clickInterface; //Simply ignore since you're not passing an interface of clicklister
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext())
.inflate(R.layout.album_row, parent, false);
return new ViewHolder(view);
}
@Override
public void onBindViewHolder(final ViewHolder holder, int position) {
try {
final String data_for_albums = this.data.get(position).get(KEY_ALBUM);
final String data_for_counts = this.data.get(position).get(KEY_COUNT);
final String data_for_paths = this.data.get(position).get(KEY_PATH);
holder.gallery_title.setText(data_for_albums);
holder.gallery_count.setText(data_for_counts);
Glide.with(activity)
.load(new File(data_for_paths)) // Uri of the picture
.into(holder.galleryImage);
/*
* You can modify this as you want.
* */
// holder.galleryImage.setOnClickListener(new View.OnClickListener() {
// @Override
// public void onClick(View v) {
// clickInterface.click(data_for_paths); // This depends on you.
// }
// });
} catch (Exception e) {
e.printStackTrace();
}
}
@Override
public int getItemCount() {
return data.size();
}
/*--------------------------------------------------------------------------------------
| GET REFERENCES TO VIEWS HERE
*--------------------------------------------------------------------------------------*/
class ViewHolder extends RecyclerView.ViewHolder {
ImageView galleryImage;
TextView gallery_count, gallery_title;
ViewHolder(View itemView) {
super(itemView);
galleryImage = itemView.findViewById(R.id.galleryImage);
gallery_count = itemView.findViewById(R.id.gallery_count);
gallery_title = itemView.findViewById(R.id.gallery_title);
}
}
}
ArrayList<HashMap<String, String >> data = new ArrayList<>();
//I'm assuming you already feed your data, so you're not passing null like me here.
cardlistview = findViewById(R.id.cardlistview);
albumAdapter = new AlbumAdapter(your_arraysOfHashMap);
RecyclerView.LayoutManager mLayoutManager = new LinearLayoutManager(getApplicationContext());
cardlistview.setLayoutManager(mLayoutManager);
cardlistview.setAdapter(albumAdapter);