RecyclerViewHelpper

Android library project that intends to simplify the usage of Adapters for ListView/GridView and RecyclerView. You won't have to code any boring adapter again!

It helps to keep boilerplate to a minimum and adds the possibility of easily changing between BaseAdapter / RecyclerView.Adapter adapter styles without changing any code. It also allows painless usage of multiple models / view types for the same list or grid

Feature

• adapter for RecyclerView & AdapterView

• height WRAP-CONTENT for RecyclerView(LinearLayout & GirdLayout)

• CommonItemDecoration for RecyclerView

---

Adding to your project

Add this to your dependencies:

compile 'com.hadlink:rvhelpperlib:1.0.3'

---

---

Code

RecyclerView SingleItem 单个条目

• adapter

        public class FuelAdapter extends RecyclerViewAdapter<FuelBean> {
        public FuelAdapter(RecyclerView recyclerView, List<FuelBean> list) {
            super(recyclerView, R.layout.item2, list);
        }
    
        @Override protected void setItemChildListener(ViewHolderHelper viewHolderHelper) {
            super.setItemChildListener(viewHolderHelper);
            viewHolderHelper.setItemChildClickListener(R.id.faveVal);
            viewHolderHelper.setItemChildClickListener(R.id.priceLayout);
            viewHolderHelper.setItemChildClickListener(R.id.labelView);
        }
    
        @Override protected void fillData(ViewHolderHelper viewHolderHelper, int position, FuelBean model) {
            LabelView_New labelViewNew = viewHolderHelper.getView(R.id.labelView);
            labelViewNew.setText(model.discount + "折");
            viewHolderHelper.setText(R.id.faveVal, model.faceVal + "");
            viewHolderHelper.setText(R.id.price, model.price + "");
            viewHolderHelper.getView(R.id.mainContent).setSelected(model.isSelect);
        }
    }
  

• activity

    rv.setLayoutManager(new WRGridLayoutManager(this, 2));
    final FuelAdapter fuelAdapter = new FuelAdapter(rv, DataEngine.S_MOCK4);
    /**
     * item点击
     */
    fuelAdapter.setOnRVItemClickListener(new OnRVItemClickListener() {
        @Override public void onRVItemClick(ViewGroup parent, View itemView, int position) {
            fuelAdapter.setSelectItem(position, null);
        }
    });
    /**
     * item子条目点击
     */
    fuelAdapter.setOnItemChildClickListener(new OnItemChildClickListener() {
        @Override public void onItemChildClick(ViewGroup parent, View childView, int position) {
            FuelBean item = fuelAdapter.getItem(position);
            switch (childView.getId()) {
                case R.id.faveVal:
                    Toast.makeText(parent.getContext(), item.faceVal + "", Toast.LENGTH_SHORT).show();
                    break;
                case R.id.priceLayout:
                    Toast.makeText(parent.getContext(), item.price + "", Toast.LENGTH_SHORT).show();
                    break;
                case R.id.labelView:
                    Toast.makeText(parent.getContext(), item.discount + "", Toast.LENGTH_SHORT).show();
                    break;
            }
        }
    });
    rv.addItemDecoration(new GridItemDecoration(2, DensityUtils.dip2px(this, 14f), true));
    rv.setAdapter(fuelAdapter);
  

RecyclerView MultiItem 多个条目

• adapter

    public class MultiAdapter extends RecyclerViewAdapter<Object> {
    public final static int TYPE_1 = 1;
    public final static int TYPE_2 = 2;
  
    public MultiAdapter(RecyclerView recyclerView) {
        super(recyclerView, R.layout.item2);
    }
  
    @Override protected int getItemViewResId(int viewType) {
        switch (viewType) {
            case TYPE_1:
                return R.layout.item1;
            case TYPE_2:
                return R.layout.item2;
        }
        return super.getItemViewResId(viewType);
    }
  
    @Override public int getItemViewType(int position) {
  
        return (getItem(position) instanceof String) ? TYPE_1 : TYPE_2;
    }
  
    @Override protected void fillData(ViewHolderHelper viewHolderHelper, int position, Object model) {
        switch (getItemViewType(position)) {
            case TYPE_1:
                String s = (String) model;
                viewHolderHelper.setText(R.id.tv, s);
                break;
            case TYPE_2:
                FuelBean fuelBean = (FuelBean) model;
                LabelView_New labelViewNew = viewHolderHelper.getView(R.id.labelView);
                labelViewNew.setText(fuelBean.discount + "折");
                viewHolderHelper.setText(R.id.faveVal, fuelBean.faceVal + "");
                viewHolderHelper.setText(R.id.price, fuelBean.price + "");
                viewHolderHelper.getView(R.id.mainContent).setSelected(fuelBean.isSelect);
                break;
        }
  
    }
   
  }
  

• activity

  //

ListView or GirdView

ListView lv = (ListView) findViewById(R.id.lv);
    final AdapterViewAdapter<String> adapter = new AdapterViewAdapter<String>(this, R.layout.item1, DataEngine.S_MOCK1) {

        @Override protected void fillData(ViewHolderHelper viewHolderHelper, int position, String model) {
            viewHolderHelper.setText(R.id.tv, model);
        }

        @Override protected void setItemChildListener(ViewHolderHelper viewHolderHelper) {
            viewHolderHelper.setItemChildClickListener(R.id.rootView);
        }
    };
    adapter.setOnItemChildClickListener(new OnItemChildClickListener() {
        @Override public void onItemChildClick(ViewGroup parent, View childView, int position) {
            if (childView.getId() == R.id.rootView)
                Toast.makeText(parent.getContext(), adapter.getItem(position), Toast.LENGTH_SHORT).show();
        }
    });
    lv.setAdapter(adapter);

Check Demo for Detail

Common issues

RecyclerView item height must be Consistency for wrap-centent in linerLayoutManager

Contributing

Forks, patches and other feedback are welcome.

Creators

vihuela - Github @vihuela License

MIT License