如何实现 Android Recyclerview 项目点击和复选框项目点击？

Question

我有以下有效的持有人，即我能够选中/取消选中复选框。 （复选框是 RecyclerView 卡片的一部分）：

@Override
public void onBindViewHolder(final ViewHolder holder, int position) {
  holder.bindData(numbers.get(position));
  //in some cases, it will prevent unwanted situations
  holder.checkbox.setOnCheckedChangeListener(null);

  //if true, your checkbox will be selected, else unselected
  holder.checkbox.setChecked(numbers.get(position).isSelected());

  holder.checkbox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
       @Override
       public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
         numbers.get(holder.getAdapterPosition()).setSelected(isChecked);
       }
  });
}

我想在 RecyclerView 上实现对项目的点击。所以，我从这个解决方案中提取了 - 请检查：https://stackoverflow.com/a/26196831/4013399

但是，现在，点击整个卡片项目有效，但无法选中/取消选中复选框。如何解决？

请帮忙。谢谢。

更新

我进行了更改 - 但是，从未输入“HERE-1,2 和 3”行。

@Override
public void onBindViewHolder(final ViewHolder holder, int position) {
Log.e("I AM ", "HERE-0");
holder.bindData(numbers.get(position));

final RelativeLayout rlyItem = holder.rlyItem;
final CheckBox checkbox = holder.checkbox;

rlyItem.setOnClickListener(new View.OnClickListener() {
    @Override public void onClick(View view) {
        mListener.onItemClicked(holder.getLayoutPosition());
        Log.e("I AM ", "HERE-1");
    }
});

checkbox.setOnClickListener(new View.OnClickListener() {
    @Override public void onClick(View view) {
        if (((CheckBox) view).isChecked()) {
            checkbox.setChecked(false);
            Log.e("I AM ", "HERE-2");
        } else {
            checkbox.setChecked(true);
            Log.e("I AM ", "HERE-3");
        }
        // Inform to Activity or the Fragment where the RecyclerView reside.
        mListener.onItemCheckBoxChecked(((CheckBox) view).isChecked(), holder.getLayoutPosition());
    }
});
//in some cases, it will prevent unwanted situations
holder.checkbox.setOnCheckedChangeListener(null);

//if true, your checkbox will be selected, else unselected
holder.checkbox.setChecked(numbers.get(position).isSelected());

checkbox.setOnCheckedChangeListener(new   CompoundButton.OnCheckedChangeListener() {
    @Override
    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
        numbers.get(holder.getAdapterPosition()).setSelected(isChecked);
        Log.e("I AM ", "HERE-4");
        //Log.e(Integer.toString(holder.getAdapterPosition()), " IS CHECKED");
    }
});

}

Answer 1

单击适配器类中的适配器膨胀视图，只需为您的复选框调用performClick()。

 holder.itemView.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            holder.checkbox.performClick();
        }
    });

Answer 2

首先，您在复选框中添加以下属性

  android:clickable="false"
        android:focusable="false"
        android:longClickable="false"

下面是我的itemclick

 recyclerView.addOnItemTouchListener(new RecyclerItemClickListener(getActivity(), new RecyclerItemClickListener.OnItemClickListener() {
                    @Override
                    public void onItemClick(View view, int position) {
                        Utils.hideSoftKeyboard(getActivity());
                       cityAdapter.itemSelected(position);
                    }
                }));

在您的适配器中添加以下方法：

 public void itemSelected(final int position) {
        if (townModelArrayList != null && !townModelArrayList.isEmpty()) {
            townModelArrayList.get(position).setSelected(!townModelArrayList.get(position).isSelected());
            notifyDataSetChanged();
        }
    }

Answer 3

我写了一个库来处理 android recycler view item click 事件。你可以在https://github.com/ChathuraHettiarachchi/RecycleClick找到整个教程

RecycleClick.addTo(YOUR_RECYCLEVIEW).setOnItemClickListener(new RecycleClick.OnItemClickListener() {
            @Override
            public void onItemClicked(RecyclerView recyclerView, int position, View v) {
                // YOUR CODE
            }
        });

或者你可以使用长按来处理项目

RecycleClick.addTo(YOUR_RECYCLEVIEW).setOnItemLongClickListener(new RecycleClick.OnItemLongClickListener() {
            @Override
            public boolean onItemLongClicked(RecyclerView recyclerView, int position, View v) {
                // YOUR CODE
                return true;
            }
        });

要处理复选框单击，您需要在适配器上设置检查更改列表

Answer 4

我通过删除问题链接 (https://stackoverflow.com/a/26196831/4013399) 中引用的整个类解决了这个问题。相反，我只为复选框实现了一个 onClick 侦听器。而对于整个卡片视图项目单击？，您可能会问。为此，我只是为包含我的文本框的布局实现了另一个 onClick 侦听器。 此外，为了保存复选框的状态，一个简单的设置和获取键、值对，如（复选框位置，“1”）（其中 1 表示选中）并同时在 SharedPreferences 中更新它起作用。

Answer 5

TL;博士

要实现 RecyclerView 项目的点击和 RecyclerView 项目中的可点击视图，您需要为它们中的每一个定义监听器。

首先，你需要定义布局：

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    >
  <RelativeLayout
      android:id="@+id/item__rly"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:background="?android:selectableItemBackground"
      android:clickable="true"
      >

    <CheckBox
    android:id="@+id/item_cbx"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Sample CheckBox" />

  </RelativeLayout>

</android.support.v7.widget.CardView>

从上面的xml代码可以发现RelativeLayout使用：

android:background="?android:selectableItemBackground"
android:clickable="true"

这是为了使项目在单击时具有动画效果。

其次，您需要在 Adapter 中定义点击监听接口，如下所示：

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

  private List<YourData> mDatas;

  // Define listener member variable
  private static OnRecyclerViewItemClickListener mListener;

  // Define the listener interface
  public interface OnRecyclerViewItemClickListener {
    void onItemClicked(int position);
    void onItemCheckBoxChecked(boolean isChecked, int position);
  }

  // Define the method that allows the parent activity or fragment to define the listener.
  public void setOnRecyclerViewItemClickListener(OnRecyclerViewItemClickListener listener) {
    this.mListener = listener;
  }

  public static class ViewHolder extends RecyclerView.ViewHolder {
    RelativeLayout rlyItem;
    CheckBox cbxSample;

    // We also create a constructor that accepts the entire item row
    // and does the view lookups to find each subview
    public ViewHolder(View itemView) {
      // Stores the itemView in a public final member variable that can be used
      // to access the context from any ViewHolder instance.
      super(itemView);
      rlyItem = (RelativeLayout) itemView.findViewById(R.id.item__rly);
      cbxSample = (CheckBox) itemView.findViewById(R.id.item_cbx);
    }
  }

  // Usually involves inflating a layout from XML and returning the holder
  @Override public ViewHolder onCreateViewHolder(ViewGroup parent,
      int viewType) {
    Context context = parent.getContext();
    LayoutInflater inflater = LayoutInflater.from(context);

    // Inflate the custom layout
    View viewHolder = inflater.inflate(R.layout.item_layout, parent, false);

    // Return a new holder instance
    return new ViewHolder(viewHolder);
  }

  // Involves populating data into the item through holder
  @Override public void onBindViewHolder(final ViewHolder viewHolder, int position) {
    // Get the data model based on position
    final YourData data = mDatas.get(position);

    final RelativeLayout rlyItem = viewHolder.rlyItem;
    CheckBox cbxSample = viewHolder.cbxSample;

    rlyItem.setOnClickListener(new View.OnClickListener() {
      @Override public void onClick(View view) {
        mListener.onItemClicked(viewHolder.getLayoutPosition());
      }
    });

    cbxSample.setOnClickListener(new View.OnClickListener() {
      @Override public void onClick(View view) {
        if (((CheckBox) v).isChecked()) {
          cbxSample.setChecked(false);
        } else {
          cbxSample.setChecked(true);
        }
        // Inform to Activity or the Fragment where the RecyclerView reside.
        mListener.onItemCheckBoxChecked(((CheckBox) v).isChecked(), viewHolder.getLayoutPosition());
      }
    });

  }

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

然后，在你的 RecyclerView 代码所在的 Activity 或 Fragment 中，你需要设置监听器：

yourAdapter.setOnRecyclerViewItemClickListener(new YourAdapter.OnRecyclerViewItemClickListener() {
  @Override 
  public void onItemClicked(int position) {
    // Do something when item clicked.   
  }

  @Override
  public void onItemCheckBoxChecked(boolean isChecked, int position) {
    // Do something when check box check state change.
  }
});

补充：
要在 ReyclerView 中保存项目的状态，您需要使用 SparseBooleanArray