在RecyclerView

时间:2016-05-11 10:25:49

标签: android android-recyclerview

我的应用在线市场。我可以将产品添加到购物车。我正在尝试更改图标来自"添加到购物车"到了#34;在购物车"。但它没有正常工作。如果我只添加一个产品并向下滚动,则所有其他产品图标也会更改。在RecyclerView适配器OnBindViewHolder中,我使用条件 if

if (getTableBasket().contains(p.getId()))
    prudactViewHolder.btn_buy.setBackgroundResource(R.drawable.tool);
else
    prudactViewHolder.btn_buy.setBackgroundResource(R.drawable.tool1);

....

ArrayList<Integer> getTableBasket(){

        ArrayList<Integer> id_list = new ArrayList<>();
        dbHelper = new DBHelper(mContext);
        SQLiteDatabase db = dbHelper.getWritableDatabase();
        Cursor c = db.query("basket", null, null, null, null, null, null);
        if (c.moveToFirst()) {
            int id_prudactColIndex = c.getColumnIndex("id_prudact");
            do {
                id_list.add(c.getInt(id_prudactColIndex));

            } while (c.moveToNext());
        } else
            Log.d(LOG_TAG, "In basket 0 rows");
        c.close();

        return id_list;
    }

修改 好的,我从JSON格式的服务器获取数据。并在recyclerview中显示它。我可以添加prudact到购物车,为此我创建了表&#34; Busket&#34;。当用户将产品添加到购物车时,prudact数据会添加到&#34; Busket&#34;。例如,用户关闭应用程序。再次回到应用程序,他可以在其他图标中找到他添加的产品,并没有在另一个图标中添加产品。

我的数据库结构

db.execSQL("create table basket ("
                + "id integer primary key autoincrement,"
                + "id_prudact integer,"
                + "name text,"
                + "id_image integer,"
                + "count integer,"
                + "price integer,"
                + "priceOld integer,"
                + "nomer_zakaz text" + ");");

        db.execSQL("create table favorite ("
                + "id integer primary key autoincrement,"
                + "id_prudact integer,"
                + "name text,"
                + "id_image text,"
                + "count integer,"
                + "price integer,"
                + "priceOld integer" + ");");

我的完整适配器。

public class PrudactAdapter extends RecyclerView.Adapter<PrudactAdapter.PrudactViewHolder> {

    List<PrudactModel> prudactsList;
    public Context mContext;
    public static EditPlayerAdapterCallback callback;
    ArrayList<PrudactBusketModel> busketList = new ArrayList<>();
    DBHelper dbHelper;
    ImageLoader imageLoader = AppController.getInstance().getImageLoader();
    public ArrayList<Integer> tableBasket = new ArrayList<Integer>();
    public ArrayList<Integer> tableFavorite = new ArrayList<>();
    String LOG_TAG = "myLogs";

    public PrudactAdapter(List<PrudactModel> persons, Context context){
        this.prudactsList = persons;
        this.mContext = context;


    }

    @Override
    public PrudactViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_of_pruduct, parent, false);
        PrudactViewHolder pvh = new PrudactViewHolder(v,mContext);

        return pvh;
    }


    @Override
    public int getItemViewType(int position) {
        return super.getItemViewType(position);


    }

    @Override
    public void  onBindViewHolder(final PrudactViewHolder prudactViewHolder, final int i) {

        if (imageLoader == null)
            imageLoader = AppController.getInstance().getImageLoader();

        final PrudactModel p  = prudactsList.get(i);
        prudactViewHolder.catalogName.setText(p.getName());
        prudactViewHolder.catalogPrice.setText(Integer.toString(p.getPrice())+" тг");
        prudactViewHolder.catalogPriceOld.setText(Integer.toString(p.getOldPrice())+" тг");
        prudactViewHolder.thumbNail.setImageUrl(p.getImgId(),imageLoader);
      //  final MediaPlayer addSound = MediaPlayer.create(mContext,R.raw.button28);
        //// TODO Cheking PRICE

        if (p.getOldPrice()==0){
            prudactViewHolder.catalogPriceOld.setVisibility(View.INVISIBLE);
            prudactViewHolder.aksia.setVisibility(View.INVISIBLE);
            prudactViewHolder.catalogPrice.setTextColor(ContextCompat.getColor(mContext, R.color.black));
        }
        else {
            prudactViewHolder.catalogPrice.setTextColor(ContextCompat.getColor(mContext, R.color.red));
            prudactViewHolder.catalogPriceOld.setVisibility(View.VISIBLE);
            prudactViewHolder.aksia.setVisibility(View.VISIBLE);
        }

        //// TODO Cheking DB

        if (getTableBasket().contains(p.getId()))
            prudactViewHolder.btn_buy.setBackgroundResource(R.drawable.tool);
        else
            prudactViewHolder.btn_buy.setBackgroundResource(R.drawable.tool1);

        if (getTableFavorite().contains(p.getId()))
            prudactViewHolder.btn_favorite.setBackgroundResource(R.drawable.favorite_d);
        else
            prudactViewHolder.btn_favorite.setBackgroundResource(R.drawable.favorite_c);

        //// TODO: 02.05.2016  BUY BUTTON CLICK

        prudactViewHolder.ll_buy.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                dbHelper = new DBHelper(mContext);
                final ContentValues cv = new ContentValues();
                final SQLiteDatabase db = dbHelper.getWritableDatabase();
                if (prudactViewHolder.btn_buy.getBackground().getConstantState()== ContextCompat.getDrawable(mContext,R.drawable.tool1).getConstantState()){
                    updateBuyButton(prudactViewHolder, true);
                    Log.d(LOG_TAG, "--- Insert in mytable: ---");
                    cv.put("id_prudact", p.getId());
                    cv.put("name",p.getName());
                    cv.put("id_image",p.getImgId());
                    cv.put("count",1);
                    cv.put("price",p.getPrice());
                    cv.put("priceOld",p.getOldPrice());
                    long rowID = db.insert("basket", null, cv);
                    Log.d(LOG_TAG, "row to basket inserted, ID = " + rowID);
                    callback.folderClicked(1);
                }
                else {
                    updateBuyButton2(prudactViewHolder, true);
                    callback.folderClicked(-1);
                    db.delete("basket","id_prudact=?",new String[]{String.valueOf(p.getId())});
                }
                dbHelper.close();
            }
        });

        prudactViewHolder.btn_buy.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                dbHelper = new DBHelper(mContext);
                final ContentValues cv = new ContentValues();
                final SQLiteDatabase db = dbHelper.getWritableDatabase();
                if (prudactViewHolder.btn_buy.getBackground().getConstantState()== ContextCompat.getDrawable(mContext,R.drawable.tool1).getConstantState()){
                    updateBuyButton(prudactViewHolder, true);
                    Log.d(LOG_TAG, "--- Insert in mytable: ---");
                    cv.put("id_prudact", p.getId());
                    cv.put("name",p.getName());
                    cv.put("id_image",p.getImgId());
                    cv.put("count",1);
                    cv.put("price",p.getPrice());
                    cv.put("priceOld",p.getOldPrice());
                    long rowID = db.insert("basket", null, cv);
                    Log.d(LOG_TAG, "row to basket inserted, ID = " + rowID);
                    callback.folderClicked(1);
                }
                else {
                    updateBuyButton2(prudactViewHolder, true);
                    callback.folderClicked(-1);
                    db.delete("basket","id_prudact=?",new String[]{String.valueOf(p.getId())});
                }
                dbHelper.close();
            }
        });

       //// TODO: 02.05.2016  FAVORITE BUTTON CLICK

        prudactViewHolder.ll_favorite.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                dbHelper = new DBHelper(mContext);
                final ContentValues cv = new ContentValues();
                final SQLiteDatabase db = dbHelper.getWritableDatabase();
                if (prudactViewHolder.btn_favorite.getBackground().getConstantState()== ContextCompat.getDrawable(mContext,R.drawable.favorite_c).getConstantState()){
                    updateHeartButton(prudactViewHolder, true);
                    cv.put("id_prudact", p.getId());
                    cv.put("name",p.getName());
                    cv.put("id_image",p.getImgId());
                    cv.put("count",1);
                    cv.put("price",p.getPrice());
                    cv.put("priceOld",p.getOldPrice());
                    long rowID = db.insert("favorite", null, cv);
                    Log.d(LOG_TAG, "row to favorite inserted, ID = " + rowID);
                }

                else {
                    updateHeartButton2(prudactViewHolder, true);
                    db.delete("favorite","id_prudact=?",new String[]{String.valueOf(p.getId())});
               }
            }
        });

        prudactViewHolder.btn_favorite.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                dbHelper = new DBHelper(mContext);
                final ContentValues cv = new ContentValues();
                final SQLiteDatabase db = dbHelper.getWritableDatabase();
                if (prudactViewHolder.btn_favorite.getBackground().getConstantState()== ContextCompat.getDrawable(mContext,R.drawable.favorite_c).getConstantState()){
                    updateHeartButton(prudactViewHolder, true);
                    cv.put("id_prudact", p.getId());
                    cv.put("name",p.getName());
                    cv.put("id_image",p.getImgId());
                    cv.put("count",1);
                    cv.put("price",p.getPrice());
                    cv.put("priceOld",p.getOldPrice());
                    long rowID = db.insert("favorite", null, cv);
                    Log.d(LOG_TAG, "row to favorite inserted, ID = " + rowID);

                }
                else {
                    updateHeartButton2(prudactViewHolder, true);
                    db.delete("favorite","id_prudact=?",new String[]{String.valueOf(p.getId())});
               }
            }
        });

        //// TODO: 02.05.2016  SHARE BUTTON CLICK

        prudactViewHolder.ll_share.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String shareBody = "Мне нравится "+p.getName()+" за "+p.getPrice()+" тенге. unimax.kz";
                Intent sharingIntent = new Intent(android.content.Intent.ACTION_SEND);
                sharingIntent.setType("text/plain");
                sharingIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, "Subject Here");
                sharingIntent.putExtra(android.content.Intent.EXTRA_TEXT, shareBody);
                mContext.startActivity(Intent.createChooser(sharingIntent,"Elaman" ));
            }
        });
        prudactViewHolder.btn_share.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String shareBody = "Мне нравится "+p.getName()+" за "+p.getPrice()+" тенге. unimax.kz";
                Intent sharingIntent = new Intent(android.content.Intent.ACTION_SEND);
                sharingIntent.setType("text/plain");
                sharingIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, "Subject Here");
                sharingIntent.putExtra(android.content.Intent.EXTRA_TEXT, shareBody);
                mContext.startActivity(Intent.createChooser(sharingIntent,"Elaman" ));
            }
        });

        prudactViewHolder.thumbNail.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(mContext, ImageActivity.class);
                intent.putExtra("image",p.getImgId());
                mContext.startActivity(intent);
            }
        });


        dbHelper.close();

    }

    private static final AccelerateInterpolator ACCELERATE_INTERPOLATOR = new AccelerateInterpolator();
    private static final OvershootInterpolator OVERSHOOT_INTERPOLATOR = new OvershootInterpolator(4);

    private void updateHeartButton(final PrudactViewHolder holder, boolean animated) {
        if (animated) {
                AnimatorSet animatorSet = new AnimatorSet();

                ObjectAnimator rotationAnim = ObjectAnimator.ofFloat(holder.btn_favorite, "rotation", 0f, 360f);
                rotationAnim.setDuration(300);
                rotationAnim.setInterpolator(ACCELERATE_INTERPOLATOR);

                ObjectAnimator bounceAnimX = ObjectAnimator.ofFloat(holder.btn_favorite, "scaleX", 0.2f, 1f);
                bounceAnimX.setDuration(300);
                bounceAnimX.setInterpolator(OVERSHOOT_INTERPOLATOR);

                ObjectAnimator bounceAnimY = ObjectAnimator.ofFloat(holder.btn_favorite, "scaleY", 0.2f, 1f);
                bounceAnimY.setDuration(300);
                bounceAnimY.setInterpolator(OVERSHOOT_INTERPOLATOR);
                bounceAnimY.addListener(new AnimatorListenerAdapter() {
                    @Override
                    public void onAnimationStart(Animator animation) {
                        holder.btn_favorite.setBackgroundResource(R.drawable.favorite_d);
                    }
                });

                animatorSet.play(rotationAnim);
                animatorSet.play(bounceAnimX).with(bounceAnimY).after(rotationAnim);
                animatorSet.start();
        }
    }

    private void updateHeartButton2(final PrudactViewHolder holder, boolean animated) {
        if (animated) {
            AnimatorSet animatorSet = new AnimatorSet();

            ObjectAnimator rotationAnim = ObjectAnimator.ofFloat(holder.btn_favorite, "rotation", 0f, 360f);
            rotationAnim.setDuration(300);
            rotationAnim.setInterpolator(ACCELERATE_INTERPOLATOR);

            ObjectAnimator bounceAnimX = ObjectAnimator.ofFloat(holder.btn_favorite, "scaleX", 0.2f, 1f);
            bounceAnimX.setDuration(300);
            bounceAnimX.setInterpolator(OVERSHOOT_INTERPOLATOR);

            ObjectAnimator bounceAnimY = ObjectAnimator.ofFloat(holder.btn_favorite, "scaleY", 0.2f, 1f);
            bounceAnimY.setDuration(300);
            bounceAnimY.setInterpolator(OVERSHOOT_INTERPOLATOR);
            bounceAnimY.addListener(new AnimatorListenerAdapter() {
                @Override
                public void onAnimationStart(Animator animation) {
                    holder.btn_favorite.setBackgroundResource(R.drawable.favorite_c);
                }
            });

            animatorSet.play(rotationAnim);
            animatorSet.play(bounceAnimX).with(bounceAnimY).after(rotationAnim);
            animatorSet.start();
        }
    }

    private void updateBuyButton(final PrudactViewHolder holder, boolean animated) {
        if (animated) {
            AnimatorSet animatorSet = new AnimatorSet();

            ObjectAnimator rotationAnim = ObjectAnimator.ofFloat(holder.btn_buy, "rotation", 0f, 360f);
            rotationAnim.setDuration(300);
            rotationAnim.setInterpolator(ACCELERATE_INTERPOLATOR);

            ObjectAnimator bounceAnimX = ObjectAnimator.ofFloat(holder.btn_buy, "scaleX", 0.2f, 1f);
            bounceAnimX.setDuration(300);
            bounceAnimX.setInterpolator(OVERSHOOT_INTERPOLATOR);

            ObjectAnimator bounceAnimY = ObjectAnimator.ofFloat(holder.btn_buy, "scaleY", 0.2f, 1f);
            bounceAnimY.setDuration(300);
            bounceAnimY.setInterpolator(OVERSHOOT_INTERPOLATOR);
            bounceAnimY.addListener(new AnimatorListenerAdapter() {
                @Override
                public void onAnimationStart(Animator animation) {
                    holder.btn_buy.setBackgroundResource(R.drawable.tool);
                }
            });

            animatorSet.play(rotationAnim);
            animatorSet.play(bounceAnimX).with(bounceAnimY).after(rotationAnim);
            animatorSet.start();
        }
    }

    private void updateBuyButton2(final PrudactViewHolder holder, boolean animated) {
        if (animated) {
            AnimatorSet animatorSet = new AnimatorSet();

            ObjectAnimator rotationAnim = ObjectAnimator.ofFloat(holder.btn_buy, "rotation", 0f, 360f);
            rotationAnim.setDuration(300);
            rotationAnim.setInterpolator(ACCELERATE_INTERPOLATOR);

            ObjectAnimator bounceAnimX = ObjectAnimator.ofFloat(holder.btn_buy, "scaleX", 0.2f, 1f);
            bounceAnimX.setDuration(300);
            bounceAnimX.setInterpolator(OVERSHOOT_INTERPOLATOR);

            ObjectAnimator bounceAnimY = ObjectAnimator.ofFloat(holder.btn_buy, "scaleY", 0.2f, 1f);
            bounceAnimY.setDuration(300);
            bounceAnimY.setInterpolator(OVERSHOOT_INTERPOLATOR);
            bounceAnimY.addListener(new AnimatorListenerAdapter() {
                @Override
                public void onAnimationStart(Animator animation) {
                    holder.btn_buy.setBackgroundResource(R.drawable.tool1);
                }
            });

            animatorSet.play(rotationAnim);
            animatorSet.play(bounceAnimX).with(bounceAnimY).after(rotationAnim);
            animatorSet.start();
        }
    }

    @Override
    public void onAttachedToRecyclerView(RecyclerView recyclerView) {
        super.onAttachedToRecyclerView(recyclerView);
    }

    @Override
    public int getItemCount() {
        return prudactsList.size();
    }

    public void setCallback(EditPlayerAdapterCallback callback2){

        callback = callback2;
    }

    public static class PrudactViewHolder extends RecyclerView.ViewHolder{

        CardView cv;
        TextView catalogName,catalogPrice,catalogPriceOld;
        NetworkImageView thumbNail;
        ImageButton btn_favorite,btn_share, btn_buy;
        LinearLayout ll_buy,aksia,ll_share,ll_favorite;

        public PrudactViewHolder(View itemView,Context context) {
            super(itemView);
            cv = (CardView)itemView.findViewById(R.id.cv);
            catalogName = (TextView)itemView.findViewById(R.id.name_catalog);
            catalogPrice = (TextView)itemView.findViewById(R.id.price_catalog);
            catalogPriceOld = (TextView)itemView.findViewById(R.id.old_price_catalog);

            btn_buy = (ImageButton) itemView.findViewById(R.id.btn_buy);
            btn_share = (ImageButton) itemView.findViewById(R.id.btn_share);
            btn_favorite = (ImageButton) itemView.findViewById(R.id.izbrannyi);

            thumbNail = (NetworkImageView)itemView.findViewById(R.id.image_catalog);
            aksia = (LinearLayout) itemView.findViewById(R.id.aksia);
            ll_buy = (LinearLayout) itemView.findViewById(R.id.ll_buy);
            ll_share = (LinearLayout) itemView.findViewById(R.id.ll_share);
            ll_favorite = (LinearLayout) itemView.findViewById(R.id.ll_favorite);

            catalogPriceOld.setPaintFlags(catalogPriceOld.getPaintFlags()| Paint.STRIKE_THRU_TEXT_FLAG);

        }
    }

    ArrayList<Integer> getTableBasket(){

        ArrayList<Integer> id_list = new ArrayList<>();
        dbHelper = new DBHelper(mContext);
        SQLiteDatabase db = dbHelper.getWritableDatabase();
        Cursor c = db.query("basket", null, null, null, null, null, null);
        if (c.moveToFirst()) {
            int id_prudactColIndex = c.getColumnIndex("id_prudact");
            do {
                id_list.add(c.getInt(id_prudactColIndex));

            } while (c.moveToNext());
        } else
            Log.d(LOG_TAG, "In basket 0 rows");
        c.close();

        return id_list;
    }

    ArrayList<Integer> getTableFavorite(){

        ArrayList<Integer> id_list = new ArrayList<>();
        dbHelper = new DBHelper(mContext);
        SQLiteDatabase db = dbHelper.getWritableDatabase();
        Cursor c = db.query("favorite", null, null, null, null, null, null);
        if (c.moveToFirst()) {
            int id_prudactColIndex = c.getColumnIndex("id_prudact");
            do {
                id_list.add(c.getInt(id_prudactColIndex));

            } while (c.moveToNext());
        } else
            Log.d(LOG_TAG, "In favorite 0 rows");
        c.close();

        return id_list;
    }
}

对不起,请用俄语 my app image

3 个答案:

答案 0 :(得分:1)

公共类AdapterTrashIncome扩展了RecyclerView.Adapter {

private ArrayList<ObjectIncome> myItems = new ArrayList<>();

public AdapterTrashIncome(ArrayList<ObjectIncome> getItems, Context context){
    try {
        mContext = context;
        myItems = getItems;
        }catch (Exception e){
        Log.e(FILE_NAME, "51: " + e.toString());
        e.printStackTrace();
    }
}

public class ViewHolder extends RecyclerView.ViewHolder {
    public TextView tvContent;
    public CheckBox cbSelect;

    public ViewHolder(View v) {
        super(v);
        tvContent = (TextView) v.findViewById(R.id.tvContent);
        cbSelect = (CheckBox) v.findViewById(R.id.cbSelect);
    }
}

@Override
public void onBindViewHolder(ViewHolder holder, final int position) {
    final ObjectIncome objIncome = myItems.get(position);
    String content = "<b>lalalla</b>";
    holder.tvContent.setText(Html.fromHtml(content));

    //in some cases, it will prevent unwanted situations
    holder.cbSelect.setOnCheckedChangeListener(null);

    //if true, your checkbox will be selected, else unselected
    holder.cbSelect.setChecked(objIncome.isSelected());

    holder.cbSelect.setOnCheckedChangeListener(new OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                //set your object's last status
                objIncome.setSelected(isChecked);
        }
    });

}

}

答案 1 :(得分:1)

更好的是,您可以将产品保存在购物车中,或者不保存在模型类中,如下所示:

Product{ boolean isInCart; ..... }

并在回收器适配器中提供此类型的arraylist。那么只有一个条件:

if (getItem(position).isInCart())
prudactViewHolder.btn_buy.setBackgroundResource(R.drawable.tool);
else
prudactViewHolder.btn_buy.setBackgroundResource(R.drawable.tool1);

否则它会对每个对UI和内存都不利的项目进行forloop。

如果您仍然无法查看此链接: http://amolsawant88.blogspot.in/2015/08/easy-way-to-highlight-selected-rowitem.html 事情是不同的,但他正在改变你想要改变图像的背景,只是背景不同但事物是一样的。

答案 2 :(得分:0)

private static final int PHOTO_ANIMATION_DELAY = 600;
private static final Interpolator INTERPOLATOR = new DecelerateInterpolator();


private final Context context;
private final int cellSize;
private final List<String> photos;
private boolean lockedAnimations = false;
private int lastAnimatedItem = -1;

public Adapter_grid_list_profile(Context context) {
this.context = context;
this.cellSize = com.elite.watchme.commonFunctionalityController.ScreenUtils.getScreenWidth(context) / 3;
this.photos = Arrays.asList(context.getResources().getStringArray(R.array.user_photos));
}

@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
final View view = LayoutInflater.from(context).inflate(R.layout.item_photo, parent, false);
StaggeredGridLayoutManager.LayoutParams layoutParams = (StaggeredGridLayoutManager.LayoutParams) view.getLayoutParams();
layoutParams.height = cellSize;
layoutParams.width = cellSize;
layoutParams.setFullSpan(false);
view.setLayoutParams(layoutParams);
return new PhotoViewHolder(view);
}

@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
bindPhoto((PhotoViewHolder) holder, position);
}

private void bindPhoto(final PhotoViewHolder holder, int position) {
Picasso.with(context)
.load(FragmentProfileScreen.imageUrlsHorizontal.get(position))
.resize(cellSize, cellSize)
.centerCrop()
.into(holder.ivPhoto, new Callback() {
@Override
public void onSuccess() {
animatePhoto(holder);
}

@Override
public void onError() {

}
});
if (lastAnimatedItem < position) lastAnimatedItem = position;
}

private void animatePhoto(PhotoViewHolder viewHolder) {
if (!lockedAnimations) {
if (lastAnimatedItem == viewHolder.getPosition()) {
setLockedAnimations(true);
}

long animationDelay = PHOTO_ANIMATION_DELAY + viewHolder.getPosition() * 30;

viewHolder.flRoot.setScaleY(0);
viewHolder.flRoot.setScaleX(0);

viewHolder.flRoot.animate()
.scaleY(1)
.scaleX(1)
.setDuration(200)
.setInterpolator(INTERPOLATOR)
.setStartDelay(animationDelay)