Question

摘要

我在RecycleView中有一个带有EditText元素的CardView，我希望获得用户输入而无需他单击按钮或按Enter，并将其与预定义的字符串进行比较。

我已经尝试了许多教程，甚至在stackOverflow中都给出了答案，但是它似乎仍然不起作用。我的想法是在Adapter类中实现TextWatcher以获取输入数据。到目前为止，这是我迄今为止的尝试（如果我删除所有相关的EditText内容，则代码可以正常运行）。贝娄是我的尝试：

MyAdapter代码

public class MyAdapter2 extends RecyclerView.Adapter<MyAdapter2.MyViewHolder>{
private Context mContext;
private List<CardAudioGrid> mList;
private OnItemClickListener mListener;

private int nowPlaying = -1;

private String ans;

public interface OnItemClickListener{
    void onPlayClick (int position);
}


public void setOnItemClickListener(OnItemClickListener listener){
    mListener = listener;
}

public MyAdapter2(Context mContext, List<CardAudioGrid> mList) {
    this.mContext = mContext;
    this.mList = mList;
}

@Override
public MyViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
    LayoutInflater inflater = LayoutInflater.from(mContext);
    View view = inflater.inflate(R.layout.audiocard, viewGroup, false);
    //when I try to run the code, it shows the error: ...MyAdapter2.MyViewHolder is not an enclosing class
    return new MyViewHolder(view, mListener, new MyViewHolder.MyCustomEditTextListener());
}
@Override
public void onBindViewHolder(MyViewHolder holder, int position) {
    holder.audioCardBackground.setImageResource(mList.get(position).getCardBackground());
...
    holder.myCustomEditTextListener.updatePosition(holder.getLayoutPosition());
}
@Override
public int getItemCount() {
    return mList.size();
}
public class MyViewHolder extends RecyclerView.ViewHolder{
    ImageView mediaPlayer, audioCardBackground;
    EditText toonName;
    MyCustomEditTextListener myCustomEditTextListener;

    public MyViewHolder(View itemView, final OnItemClickListener listener, MyCustomEditTextListener myCustomEditTextListener) {
        super(itemView);

        itemView.findViewById(R.id.cardbackgroundId);
        ...

        this.myCustomEditTextListener = myCustomEditTextListener;

        mediaPlayer.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if(listener!=null){
                    int position = getLayoutPosition();
                    nowPlaying = position;
                    if (position != RecyclerView.NO_POSITION){
                        listener.onPlayClick(position);
                        notifyDataSetChanged(); //restarts the views
                    }else{
                        Toast.makeText(mContext, "error", Toast.LENGTH_LONG);
                    }
                }
            }
        });
    }

    //I want the EditText to watch what the user is typing. Every change should be compared
    //to the names string given from when adding mList items
    private class MyCustomEditTextListener implements TextWatcher{
        private int position;
        public void updatePosition(int position) {
            this.position = position;
        }
        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {

        }

        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {
            ans = s.toString().toLowerCase();
            if (ans == mList.get(position).getName()){
                Toast.makeText(mContext, "Correct", Toast.LENGTH_LONG);
            }
        }

        @Override
        public void afterTextChanged(Editable s) {

        }
    }

}
}

我的尝试错误在上面的代码中进行了注释。我应该如何实施这个想法？

我目前正在学习如何正确管理android，因此，如果您解释这些步骤的解决方案，我将不胜感激。

Answer 1

应用此：

toonName.setOnFocusChangeListener((v, hasFocus) -> {
                if (hasFocus) {
                    toonName.removeTextChangedListener(textWatcher);
                    toonName.addTextChangedListener(textWatcher);
                } else {
                    toonName.removeTextChangedListener(textWatcher);
                }
            });

Answer 2

在onTextChanged()内

使用

ans = s.toString().toLowerCase();
            if (ans.equals(mList.get(position).getName())){
                Toast.makeText(mContext, "Correct", Toast.LENGTH_LONG);
            }

Answer 3

这是在单击按钮时获取所有Recyerview列表项数据的代码

 integerArrayList= my array of data which i have passed to adapter

            ArrayList<FormDataItems> formDataItemsArrayList = new ArrayList<>();      
                for (int i = 0; i < integerArrayList.size(); i++) {
                    View view = rvForm.getChildAt(i);
                    EditText etName = (EditText) view.findViewById(R.id.etName);
                    EditText etMobile = (EditText) view.findViewById(R.id.etMobile);
                    RadioGroup rgGender = (RadioGroup) view.findViewById(R.id.rbGender);


                    String strName = etName.getText().toString();
                    String strNumber = etMobile.getText().toString();

                    //add in to array for further use
                    FormDataItems formDataItems = new FormDataItems(strName, gender, strNumber);
                    formDataItemsArrayList.add(formDataItems);

                }

在单击按钮时编写此代码，并且元素ID与recyclerview cell / item.xml相同

如何在不单击RecyclerView中的按钮的情况下获取EditText的输入？

3 个答案: