Java 如何在android recyclerview适配器中获取所有更改的项目

我在RecyclerView中使用名称和描述

但是名称和描述有edittext，用户可以在其中更改名称、描述并提交整个字段

现在的问题是如何获取recyclerview android中所有项目的整个字段

public static List<CityEvent> getData() {
        List<CityEvent> list = new ArrayList<>();
        list.add(new CityEvent("Some event", "Some event in London", CityEvent.EVENT_TYPE));
        list.add(new CityEvent("Some event", "Some event in London", CityEvent.EVENT_TYPE));
        list.add(new CityEvent("Some event", "Some event in London", CityEvent.EVENT_TYPE));
        list.add(new CityEvent("Some event", "Some event in London", CityEvent.EVENT_TYPE));
        list.add(new CityEvent("Some event", "Some event in London", CityEvent.EVENT_TYPE));
        list.add(new CityEvent("Some event", "Some event in London", CityEvent.EVENT_TYPE));
        list.add(new CityEvent("Droidcon", "Droidcon in Berlin", CityEvent.EVENT_TYPE));
        return list;
    }



public class CityEvent {

    public static final int EVENT_TYPE = 1;

    private String mName;

    private String mDescription;

    private int mType;

    public CityEvent(String name, String description, int type) {
        this.mName = name;
        this.mDescription = description;
        this.mType = type;
    }

    public String getName() {
        return mName;
    }

    public void setName(String name) {
        this.mName = name;
    }

    public String getDescription() {
        return mDescription;
    }

    public void setDescription(String description) {
        this.mDescription = description;
    }

    public int getType() {
        return mType;
    }

    public void setType(int type) {
        this.mType = type;
    }
}

主要活动：

//just pasting the main logic

DifferentRowAdapter adapter = new DifferentRowAdapter(getData());

LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this, OrientationHelper.VERTICAL, false);
final RecyclerView mRecyclerView = (RecyclerView) findViewById(R.id.recycler_view);
mRecyclerView.setLayoutManager(linearLayoutManager);
//this is imp
mRecyclerView.setNestedScrollingEnabled(false);
mRecyclerView.setItemAnimator(new DefaultItemAnimator());
mRecyclerView.setAdapter(adapter);

---

我认为您需要做的是在所有

ViewHolder

对象的

EditText

字段中侦听文本更改。您可以在

onBindViewHolder（）

或

ViewHolder

类的构造函数中设置侦听器，在您的示例中是

EventViewHolder

。然后您需要

ArrayList

，一个用于

title

，另一个用于

description

，并使用输入这些字段的初始值设置它们。在任何文本更改中，可以使用

TextWatcher

的

onTextChanged（）

更新

ArrayList

中的值。当需要传递所有值时，只需传递我上面提到的两个

ArrayList

对象

这是您在字段中使用了

setText（）

的那一行之后的

onBindViewHolder（）

的外观

titleData

和

descriptionData

是两个

ArrayList

对象，假定已初始化

    titleData.add(object.getName());
    descriptionData.add(object.getDescription());

    ((EventViewHolder)holder).mTitle.addTextChangedListener(new TextWatcher() {
    @Override
    public void afterTextChanged(Editable s) {
        // TODO Auto-generated method stub
    }

    @Override
    public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        // TODO Auto-generated method stub
    }

    @Override
    public void onTextChanged(CharSequence s, int start, int before, int count) {
        titleData.remove(position);
        titleData.add(position, s.toString());
    }
    ((EventViewHolder)holder).mDescription.addTextChangedListener(new TextWatcher() {
    @Override
    public void afterTextChanged(Editable s) {
        // TODO Auto-generated method stub
    }

    @Override
    public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        // TODO Auto-generated method stub
    }

    @Override
    public void onTextChanged(CharSequence s, int start, int before, int count) {
        descriptionData.remove(position);
        descriptionData.add(position, s.toString());
    }

---

没有您想要的功能。要解决此任务，您必须将OnFocusChangeListener设置为编辑文本，并在edittext失去焦点后为对象设置新值。您可以在onBindViewHolder中发布大致内容吗？如何从每一行获取这些项目？

//just pasting the main logic

DifferentRowAdapter adapter = new DifferentRowAdapter(getData());

LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this, OrientationHelper.VERTICAL, false);
final RecyclerView mRecyclerView = (RecyclerView) findViewById(R.id.recycler_view);
mRecyclerView.setLayoutManager(linearLayoutManager);
//this is imp
mRecyclerView.setNestedScrollingEnabled(false);
mRecyclerView.setItemAnimator(new DefaultItemAnimator());
mRecyclerView.setAdapter(adapter);

    titleData.add(object.getName());
    descriptionData.add(object.getDescription());

    ((EventViewHolder)holder).mTitle.addTextChangedListener(new TextWatcher() {
    @Override
    public void afterTextChanged(Editable s) {
        // TODO Auto-generated method stub
    }

    @Override
    public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        // TODO Auto-generated method stub
    }

    @Override
    public void onTextChanged(CharSequence s, int start, int before, int count) {
        titleData.remove(position);
        titleData.add(position, s.toString());
    }
    ((EventViewHolder)holder).mDescription.addTextChangedListener(new TextWatcher() {
    @Override
    public void afterTextChanged(Editable s) {
        // TODO Auto-generated method stub
    }

    @Override
    public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        // TODO Auto-generated method stub
    }

    @Override
    public void onTextChanged(CharSequence s, int start, int before, int count) {
        descriptionData.remove(position);
        descriptionData.add(position, s.toString());
    }