Question

我的方法没有像我预期的那样运行，当我点击顶行时，它显示正确，但是当我搜索另一个键时，当我点击它时，它显示相同。我错过了什么？它以某种方式连接到arraylist [0,1,2,3,4,5] 所以，当我点击顶行时，它指向0，它总是正确的，我该如何解决？

这是我的方法：

private void buildRecyclerView(){
        // Create recycler view.
        mRecyclerView = findViewById(R.id.recyclerView);
        mRecyclerView.setHasFixedSize(true);

        mLayoutManager = new LinearLayoutManager(this);
        // Create an adapter and supply the data to be displayed.
        mAdapter = new ExampleAdapter(mExampleList);
        // Give the recycler view a default layout manager.
        mRecyclerView.setLayoutManager(mLayoutManager);
        // Connect the adapter with the recycler view.
        mRecyclerView.setAdapter(mAdapter);
        //buat hilang dulu diawal
        mRecyclerView.setVisibility(View.GONE);

        mRecyclerView.addOnItemTouchListener(
                new RecyclerItemClickListener(this, mRecyclerView ,new RecyclerItemClickListener.OnItemClickListener() {
                    @Override
                    public void onItemClick(View view, int position) {

                        ExampleItem item = (ExampleItem) mExampleList.get(position);
                        if (item.getText1().equals("A12345")){
                            AlertDialog.Builder builder = new AlertDialog.Builder(menu_utama.this);
                            builder.setMessage("The text is A12345")
                                    .setNegativeButton("Retry", null)
                                    .create()
                                    .show();
                        }else{
                            AlertDialog.Builder builder = new AlertDialog.Builder(menu_utama.this);
                            builder.setMessage("NOT THE SAME")
                                    .setNegativeButton("Retry", null)
                                    .create()
                                    .show();
                        }
                    }
                    @Override
                    public void onLongItemClick(View view, int position) {
                        // do whatever
                    }
                })
        );
    }

这是数据：

private void createExampleList(){

        mExampleList = new ArrayList<>();
        mExampleList.add(new ExampleItem(R.drawable.folder_download, "A12345", "Kata-kata nya"));
        mExampleList.add(new ExampleItem(R.drawable.folder_download, "B54321", "Kata-kata nya"));
        mExampleList.add(new ExampleItem(R.drawable.folder_download, "C23456", "Kata-kata nya "));
        mExampleList.add(new ExampleItem(R.drawable.folder_download, "D65432", "Kata-kata nya"));
        mExampleList.add(new ExampleItem(R.drawable.folder_download, "E34567", "Kata-kata nya"));
    }

这是RecyclerItemClickListener：

public class RecyclerItemClickListener implements RecyclerView.OnItemTouchListener {
    private OnItemClickListener mListener;

    public interface OnItemClickListener {
        public void onItemClick(View view, int position);

        public void onLongItemClick(View view, int position);
    }

    GestureDetector mGestureDetector;

    public RecyclerItemClickListener(Context context, final RecyclerView recyclerView, OnItemClickListener listener) {
        mListener = listener;
        mGestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
            @Override
            public boolean onSingleTapUp(MotionEvent e) {
                return true;
            }

            @Override
            public void onLongPress(MotionEvent e) {
                View child = recyclerView.findChildViewUnder(e.getX(), e.getY());
                if (child != null && mListener != null) {
                    mListener.onLongItemClick(child, recyclerView.getChildAdapterPosition(child));
                }
            }
        });
    }

    @Override public boolean onInterceptTouchEvent(RecyclerView view, MotionEvent e) {
        View childView = view.findChildViewUnder(e.getX(), e.getY());
        if (childView != null && mListener != null && mGestureDetector.onTouchEvent(e)) {
            mListener.onItemClick(childView, view.getChildAdapterPosition(childView));
            return true;
        }
        return false;
    }

    @Override public void onTouchEvent(RecyclerView view, MotionEvent motionEvent) { }

    @Override
    public void onRequestDisallowInterceptTouchEvent (boolean disallowIntercept){}
}

这是我的适配器：

public class ExampleAdapter extends RecyclerView.Adapter<ExampleAdapter.ExampleViewHolder>{

    private ArrayList<ExampleItem> mExampleList;

    public static class ExampleViewHolder extends RecyclerView.ViewHolder {

        public ImageView mImageView;
        public TextView mTextView1;
        public TextView mTextView2;

        public ExampleViewHolder(View itemView ) {
            super(itemView);
            mImageView = itemView.findViewById(R.id.imageView);
            mTextView1 = itemView.findViewById(R.id.textView);
            mTextView2 = itemView.findViewById(R.id.textView2);
        }

    }

    public ExampleAdapter(ArrayList<ExampleItem> exampleList) {
        mExampleList = exampleList;
    }

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

        ExampleViewHolder evh = new ExampleViewHolder(v);
        return evh;
    }

    @Override
    public void onBindViewHolder(ExampleViewHolder holder, int position) {
        ExampleItem currentItem = mExampleList.get(position);

        holder.mImageView.setImageResource(currentItem.getImageResource());
        holder.mTextView1.setText(currentItem.getText1());
        holder.mTextView2.setText(currentItem.getText2());
    }

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

    public void filterList(ArrayList<ExampleItem> filteredList) {
        mExampleList = filteredList;
        notifyDataSetChanged();
    }
}

Answer 1

当您过滤数据时，点击的项目位置不一定是全局＆＃39;中的位置。 mExampleList，因此您获得的项目实际上不是您单击的项目。

您需要向ExampleAdapter添加方法：

public ExampleItem getItemForPosition(int position) {
  return mExampleList.get(position); //This is the filtered list!
}

在你的onItemClick＆＃39;回调使用该方法而不是从全局mExampleList中检索数据，如下所示：

ExampleItem item = mAdapter.getItemForPosition(position);

我的方法没有像我预期的那样运行

1 个答案: