Question

我正在使用Recyclerview作为菜单类别，我想处理项目点击监听器以开始额外的活动开始其他活动，请任何人有关于此答案的经验我的问题。

下面是我的代码java。如果可以，我想在ProductCategory.class中放置click监听器，因为我想多次使用这个模块（ProductServiceCategoryContractor，ProductServiceCategoryAdapter）。

ProductServiceCategoryContractor.java（properties）

public class ProductServiceCategoryContractor {
    private int img;

    public ProductServiceCategoryContractor(String title) {
        this.title = title;
    }

    private String title;

    public ProductServiceCategoryContractor(int img, String title) {
        this.img = img;
        this.title = title;
    }

    public int getImg() {
        return img;
    }

    public void setImg(int img) {
        this.img = img;
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }
}

ProductServiceCategoryAdapter.java

public class ProductServiceCategoryAdapter extends RecyclerView.Adapter<ProductServiceCategoryAdapter.MyViewHolder> {
    private Context mContext;
    private List<ProductServiceCategoryContractor> albumList;
    public class MyViewHolder extends RecyclerView.ViewHolder {
        public LinearLayout layout;
        public ImageView img;
        public TextView title;
        public MyViewHolder(View view) {
            super(view);
            title = (TextView) view.findViewById(R.id.title);
            img = (ImageView) view.findViewById(R.id.img);
            layout=(LinearLayout) view.findViewById(R.id.layout);
        }
    }
    public ProductServiceCategoryAdapter(Context mContext, List<ProductServiceCategoryContractor> albumList) {
        this.mContext = mContext;
        this.albumList = albumList;
    }
    @Override
    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View itemView = LayoutInflater.from(parent.getContext())
                .inflate(R.layout.product_menu_model, parent, false);
        return new MyViewHolder(itemView);
    }
    @Override
    public void onBindViewHolder(final MyViewHolder holder, int position) {
        ProductServiceCategoryContractor album = albumList.get(position);
        holder.title.setText(album.getTitle());
        Glide.with(mContext).load(album.getImg()).into(holder.img);
    }
    @Override
    public int getItemCount() {
        return albumList.size();
    }
}

ProductCategory.java

public class ProductCategory extends AppCompatActivity {
    private RecyclerView recyclerView;
    private ProductServiceCategoryAdapter adapter;
    private List<ProductServiceCategoryContractor> albumList;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_product_category);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        getSupportActionBar().setDisplayShowHomeEnabled(true);
        recyclerView = (RecyclerView) findViewById(R.id.product_category);
        albumList = new ArrayList<>();
        adapter = new ProductServiceCategoryAdapter(this, albumList);
        RecyclerView.LayoutManager mLayoutManager = new GridLayoutManager(this, 1);
        recyclerView.setLayoutManager(mLayoutManager);
        recyclerView.setItemAnimator(new DefaultItemAnimator());
        recyclerView.setAdapter(adapter);
        prepareAlbums();
    }
    private void prepareAlbums() {
        int[] covers = new int[]{
                R.mipmap.ic_launcher
        };
        ProductServiceCategoryContractor pl_list = new ProductServiceCategoryContractor(covers[0], "Phone Spare parts & Accessory");
        albumList.add(pl_list);
        pl_list = new ProductServiceCategoryContractor(covers[0], "Computer Networking");
        albumList.add(pl_list);
        pl_list = new ProductServiceCategoryContractor("Clothing Accessory");
        albumList.add(pl_list);
        adapter.notifyDataSetChanged();
    }
    @Override
    public boolean onSupportNavigateUp(){
        finish();
        return true;
    }
}

Answer 1

使用View.OnClickListener实现ViewHolder，重写OnClick方法并创建一个界面，现在您可以在创建ViewHolder时使用onclick方法。这是一个简单的例子...

public class MyCustomAdapter extends RecyclerView.Adapter<MyCustomAdapter.ViewHolder> {


    public static class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {

        public IMyViewHolderClicks mListener;


        public ViewHolder(View v, IMyViewHolderClicks listener) {

            super(v);
            v.setOnClickListener(this);
        }


        @Override
        public void onClick(View v) {
            mListener.myOnClick(v, getLayoutPosition());
        }


        public static interface IMyViewHolderClicks {
            public void myOnClick(View caller, int position);
        }
    }

    public MyCustomAdapter(Context context) {
        this.context = context;
        //..............
    }


    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent,
                                         int viewType) {
        View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.post_list_item, parent, false);

        MyCustomAdapter.ViewHolder vh = new ViewHolder(v, new PostsAdapter.ViewHolder.IMyViewHolderClicks() {
            @Override
            public void myOnClick(View caller, int position) {

                //Add your onclick event here
            }
        });

        return vh;
    }


    @Override
    public void onBindViewHolder(ViewHolder holder, final int position) {

        //..........
    }

Answer 2

有许多方法可以在OnClickListener适配器中实现RecyclerView。

您可以在onBindViewHolder()方法中实现点击监听器，如下所示

holder.buttoncalling.setOnClickListener(new View.OnClickListener(){
   // perform click operation
});

你也可以在ItemHolder内部实现它

buttoncalling.setOnClickListener( new  View.OnClickListener(){
   // perform click operation    
});

并在IIS Web App Deployment Using WinRM extension

getAdapterPosition()

您还可以对您的活动进行界面回调，并将其与其一起传递以供参考。

Answer 3

将onClickListener放在onBindViewHolder ..

@Override
    public void onBindViewHolder(final MyViewHolder holder, int position) {
        ProductServiceCategoryContractor album = albumList.get(position);
        holder.title.setText(album.getTitle());
        Glide.with(mContext).load(album.getImg()).into(holder.img);

        holder.img.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(mContext, OtherActivity.class);
                intent.putExtra("extra", "message");
                mContext.startActivity(intent); 
            }
        });
    }

如何处理Itemclick监听器recyclelerview

3 个答案: