Question

我正在做汽车选择功能。在我的情况下，汽车类型（迷你，微型），汽车选择图像和汽车取消选择图像存储在sqlite中，然后我读取数据库并将汽车选择细节存储在水平循环视图中。一切都运行正常，但我无法选择特定的汽车。当我选择另一个图像时，它会更改为所选图像，但之前选择的图像不会更改为未选择的图像。任何人都可以帮我解决这个问题。

下面的

是我的回收器适配器

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

ListItemClickListener mlistener;
Context mCtx;
Cursor mCursor;
private int clickposition = 0;


public RecycleAdapter(Context context, ListItemClickListener listener) {
    mCtx = context;
    mlistener = listener;
}

@Override
public RecycleAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.layout_vehicles_available, parent, false);
    ViewHolder vh = new ViewHolder(view);
    return vh;
}

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

    mCursor.moveToPosition(position);
    String carType = mCursor.getString(mCursor.getColumnIndex(COLUMN_SERVICE));
    holder.carType.setText(carType);

    byte[] image = mCursor.getBlob(mCursor.getColumnIndex(COLUMN_IMAGE));
    Bitmap bitmap = BitmapFactory.decodeByteArray(image, 0, image.length);
    holder.carImage.setImageBitmap(bitmap);

}

@Override
public int getItemCount() {
    if (mCursor == null)
        return 0;
    return mCursor.getCount();
}

public void swapCursor(Cursor data) {
    mCursor = data;
    notifyDataSetChanged();
}

public interface ListItemClickListener {

    void onClickListener(int position);
}

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

    TextView carType;

    ImageView carImage;
    RelativeLayout rl;

    public ViewHolder(View itemView) {
        super(itemView);
        carType = (TextView) itemView.findViewById(R.id.txtcarType);
        carImage = (ImageView) itemView.findViewById(R.id.select_carImage);
        rl = (RelativeLayout) itemView.findViewById(R.id.rl);
        rl.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.rl:
                clickposition = getAdapterPosition();
                Log.d("clickposition", String.valueOf(clickposition));
                int i;
                for (i = 0; i < mCursor.getCount(); i++) {

                    int id = mCursor.getInt(mCursor.getColumnIndex(DbContract.DbEntry._ID));
                    mlistener.onClickListener(id);
                    if (clickposition != i) {
                        mCursor.moveToPosition(i);
                        Log.d("clickposition1", String.valueOf(i));
                        byte[] image = mCursor.getBlob(mCursor.getColumnIndex(COLUMN_IMAGE));
                        Bitmap bitmap = BitmapFactory.decodeByteArray(image, 0, image.length);
                        carImage.setImageBitmap(bitmap);
                    }
                    mCursor.moveToPosition(i);
                    Log.d("clickposition2", String.valueOf(i));
                    byte[] image_sel = mCursor.getBlob(mCursor.getColumnIndex(COLUMN_IMAGE_SELECTED));
                    Bitmap bitmap_sel = BitmapFactory.decodeByteArray(image_sel, 0, image_sel.length);
                    carImage.setImageBitmap(bitmap_sel);

                }

                Toast.makeText(mCtx, "driverlocation = Firebase.getreference" + mCursor.getString(mCursor.getColumnIndex(COLUMN_SERVICE)), Toast.LENGTH_SHORT).show();
                break;
        }
    }

}

}

enter image description here

Answer 1

将onBindViewholder更改为此

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

mCursor.moveToPosition(position);
String carType = mCursor.getString(mCursor.getColumnIndex(COLUMN_SERVICE));
holder.carType.setText(carType);

byte[] image = mCursor.getBlob(mCursor.getColumnIndex(COLUMN_IMAGE));
Bitmap bitmap = BitmapFactory.decodeByteArray(image, 0, image.length);
holder.carImage.setImageBitmap(bitmap);

holder.rl.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            clickposition = position;
            Log.d("clickposition", String.valueOf(clickposition));
            int i;
            for (i = 0; i < mCursor.getCount(); i++) {

                int id = mCursor.getInt(mCursor.getColumnIndex(DbContract.DbEntry._ID));
                mlistener.onClickListener(id);
                if (clickposition != i) {
                    mCursor.moveToPosition(i);
                    Log.d("clickposition1", String.valueOf(i));
                    byte[] image = mCursor.getBlob(mCursor.getColumnIndex(COLUMN_IMAGE));
                    Bitmap bitmap = BitmapFactory.decodeByteArray(image, 0, image.length);
                    carImage.setImageBitmap(bitmap);
                }
                mCursor.moveToPosition(i);
                Log.d("clickposition2", String.valueOf(i));
                byte[] image_sel = mCursor.getBlob(mCursor.getColumnIndex(COLUMN_IMAGE_SELECTED));
                Bitmap bitmap_sel = BitmapFactory.decodeByteArray(image_sel, 0, image_sel.length);
                carImage.setImageBitmap(bitmap_sel);

            }

            Toast.makeText(mCtx, "driverlocation = Firebase.getreference" + mCursor.getString(mCursor.getColumnIndex(COLUMN_SERVICE)), Toast.LENGTH_SHORT).show();
        }
    });

   }

RecyclerView图像在点击时更改

1 个答案: