Question

我已经用图像，标题和复选框填充了recyclerView。我有两个问题。

如何在单击imageview或整个回收项目时选中复选框。
我必须通过从recyclerview获取所有选中的项目来进行下一个活动。

我的布局：

<RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="8dp">

        <ImageView
            android:id="@+id/image"
            android:layout_width="match_parent"
            android:layout_height="150dp"
            android:layout_gravity="center_horizontal"
            android:contentDescription="Interests"
            android:scaleType="centerCrop"
            android:src="@drawable/ic_yash_dp" />

        <TextView
            android:id="@+id/title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentBottom="true"
            android:layout_alignParentLeft="true"
            android:layout_alignParentStart="true"
            android:layout_gravity="bottom"
            android:layout_margin="5dp"
            android:layout_marginTop="24dp"
            android:background="@drawable/rounded_corners"
            android:gravity="bottom"
            android:padding="5dp"
            android:text="GYM"
            android:textAlignment="center"
            android:textColor="@color/white" />

        <CheckBox
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/checkBox"
            android:layout_margin="2dp"
            android:layout_alignParentTop="true"
            android:layout_alignParentRight="true"
            android:layout_alignParentEnd="true" />

    </RelativeLayout>

我的适配器：

@Override
public void onBindViewHolder(RecyclerViewHolder holder, int position) {
final InterestBean model = arrayList.get(position);
final int pos = position;

RecyclerViewHolder mainHolder = (RecyclerViewHolder) holder;// holder

Bitmap image = BitmapFactory.decodeResource(context.getResources(),
        model.getImage());// This will convert drawbale image into bitmap

// setting title
mainHolder.title.setText(model.getTitle());
mainHolder.imageview.setImageBitmap(image);
mainHolder.checkBox.setChecked(arrayList.get(position).isSelected());
mainHolder.checkBox.setTag(arrayList.get(position));


mainHolder.checkBox.setOnClickListener(new View.OnClickListener()     {
public void onClick(View v) {
CheckBox cb = (CheckBox) v;
InterestBean contact = (InterestBean) cb.getTag();

contact.setIsSelected(cb.isChecked());
arrayList.get(pos).setIsSelected(cb.isChecked());
selectedItems.add(pos);
Toast.makeText(
v.getContext(), pos + cb.isChecked(), Toast.LENGTH_LONG).show();
}
});}

Answer 1

您可以使用Model类来获取recyclerView检查的项目。更多参考： Android Recyclerview checkbox

模型

public class Model {

    private boolean isSelected;
    private String animal;

    public String getAnimal() {
        return animal;
    }

    public void setAnimal(String animal) {
        this.animal = animal;
    }

    public boolean getSelected() {
        return isSelected;
    }

    public void setSelected(boolean selected) {
        isSelected = selected;
    }
}

适配器

import android.content.Context;
 import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
    import android.view.View;
 import android.view.ViewGroup;
 import android.widget.CheckBox;
 import android.widget.TextView;
 import android.widget.Toast;

 import java.util.ArrayList;


  public class CustomAdapter extends RecyclerView.Adapter<CustomAdapter.MyViewHolder> {

private LayoutInflater inflater;
public static ArrayList<Model> imageModelArrayList;
private Context ctx;

public CustomAdapter(Context ctx, ArrayList<Model> imageModelArrayList) {

    inflater = LayoutInflater.from(ctx);
    this.imageModelArrayList = imageModelArrayList;
    this.ctx = ctx;
}

@Override
public CustomAdapter.MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

    View view = inflater.inflate(R.layout.rv_item, parent, false);
    MyViewHolder holder = new MyViewHolder(view);

    return holder;
}

@Override
public void onBindViewHolder(final CustomAdapter.MyViewHolder holder, int position) {

    holder.checkBox.setText("Checkbox " + position);
    holder.checkBox.setChecked(imageModelArrayList.get(position).getSelected());
    holder.tvAnimal.setText(imageModelArrayList.get(position).getAnimal());

   // holder.checkBox.setTag(R.integer.btnplusview, convertView);
    holder.checkBox.setTag(position);
    holder.checkBox.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            Integer pos = (Integer) holder.checkBox.getTag();
            Toast.makeText(ctx, imageModelArrayList.get(pos).getAnimal() + " clicked!", Toast.LENGTH_SHORT).show();

            if (imageModelArrayList.get(pos).getSelected()) {
                imageModelArrayList.get(pos).setSelected(false);
            } else {
                imageModelArrayList.get(pos).setSelected(true);
            }
        }
    });


}

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

class MyViewHolder extends RecyclerView.ViewHolder {

    protected CheckBox checkBox;
    private TextView tvAnimal;

    public MyViewHolder(View itemView) {
        super(itemView);

        checkBox = (CheckBox) itemView.findViewById(R.id.cb);
        tvAnimal = (TextView) itemView.findViewById(R.id.animal);
    }

}

Answer 2

1）您可以添加mainHolder.imageview OnClickListener
2）两步：

添加到InterestBean模型boolen isChecked
转到下一个活动，获取所有InterestBeans，获取所有已检查的InterestBeans并保存。

代码：

<?php
echo $this->Form->submit("Create Schedule", array("id" => "createSchedule", "class" => "btn btn-success"));
echo $this->Form->end();
?>

Answer 3

只需添加recyclelerview的两个覆盖方法

@Override
public long getItemId(int position) {
    return position;
}

@Override
public int getItemViewType(int position) {
    return position;
}

Answer 4

来自@ninjahoahong的

我在onBindViewHolder方法中添加了checkbox listenner，复选框可以点击。

viewHolder.checkBox.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            int pos = viewHolder.getAdapterPosition();
            ChoiceItem currentItem = mChoice.get(pos);
            if(viewHolder.checkBox.isChecked()){
                onItemCheckListener.onItemCheck(currentItem);
                currentItem.setCheck(true);
            }else{
                onItemCheckListener.onItemUncheck(currentItem);
                currentItem.setCheck(false);
            }
        }
    });

Answer 5

这对我有用，对您也一样只需创建静态列表，我就在MainActivity.java中创建了它

public static List<String> myItems = new ArrayList<>();

在YouAdapter.class中创建setOnCheckedChangeListener

holder.checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
        @Override
        public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
            if(b){
                myItems.add(Model.getYouItem());
            }
            else{
                myItems.remove(Model.getYouItem());
            }
        }
    });

现在，您可以使用myItems列表执行操作了。

Answer 6

首先在穆迪尔类中设置一个布尔值

并单击复选框将布尔值设置为true

通过以下方法

并选中了所有复选框，是否选中了

 fun isListContainMethod(arraylist: List<Puzzle>): Boolean {
    for (puzzle in arraylist) {
        if (!puzzle.isSelect) {
            return false
        }
    }
    return true
}

从recyclerview android获取已选中复选框的列表

7 个答案: