RecyclerView<第六篇>：支持多类型recycleview

改动量有点大。

MainActivity.java

public class MainActivity extends AppCompatActivity {

    private RecyclerView mRecyclerView;
    private MultiMainAdapter adapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mRecyclerView = findViewById(R.id.recycler_view);
//            mRecyclerView.setLayoutManager(new GridLayoutManager(MainActivity.this, 2));
        LinearLayoutManager linearLayoutManager = new LinearLayoutManager(MainActivity.this);
//            linearLayoutManager.setOrientation(LinearLayoutManager.HORIZONTAL);
        mRecyclerView.setLayoutManager(linearLayoutManager);
        mRecyclerView.setHasFixedSize(true);
        final List<BaseBean> list = new ArrayList<>();
        list.add(new PhotoBean("http://www.17qq.com/img_qqtouxiang/75200019.jpeg", "图片1", (byte) -1));
        list.add(new PhotoBean("http://www.xinhuanet.com//foto/2017-04/26/129575007_14931880312131n.jpg", "图片2", (byte) -1));
        list.add(new PhotoBean("http://img14.360buyimg.com/n1/jfs/t20803/318/567017352/327934/3f2fc045/5b11e4c4N9b82a9ae.jpg", "图片3", (byte) -1));
        list.add(new PhotoBean("http://news.cri.cn/gb/mmsource/images/2007/09/21/em070921050.jpg", "图片4", (byte) -1));
        list.add(new PictureBean("http://pic.58pic.com/58pic/11/68/32/08658PICred.jpg"));
        list.add(new PhotoBean("http://pic19.nipic.com/20120210/7827303_221233267358_2.jpg", "图片5", (byte) -1));
        list.add(new PhotoBean("http://pic.58pic.com/58pic/15/23/09/74T58PICZjg_1024.jpg", "图片6", (byte) -1));
        list.add(new TextBean("我是一个文本1"));
        list.add(new PhotoBean("http://pic.wenwen.soso.com/p/20110311/20110311153941-1798960341.jpg", "图片7", (byte) -1));
        list.add(new TextBean("我是一个文本2"));
        list.add(new PhotoBean("http://news.cri.cn/gb/mmsource/images/2011/05/25/249fe9d0a44e4d1daf28ba20f96930f2.jpg", "图片8", (byte) -1));
        list.add(new PhotoBean("http://www.hb.chinanews.com/photo/2013/1105/U4P1T52D145F1033DT20131105102009.jpg", "图片9", (byte) -1));
        list.add(new PictureBean("http://pic.nipic.com/2008-05-06/200856201542395_2.jpg"));
        list.add(new PhotoBean("http://gz.people.com.cn/mediafile/201110/12/F201110121633301826600704.jpg", "图片10", (byte) -1));
        list.add(new PhotoBean("http://imgpic.gmw.cn/dt/2012-02/15/20120215143754_7556.jpg", "图片11", (byte) -1));
        list.add(new TextBean("我是一个文本3"));



        adapter = new MultiMainAdapter(MainActivity.this, list, new MultiRecycleViewListener<BaseBean>() {
            @Override
            public int getItemViewType(int position) {
                int itemViewType = 0;
                if(list != null && list.size() > 0){
                    itemViewType = list.get(position).getItemViewType();
                }
                return itemViewType;
            }

            @Override
            public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
                View itemView = null;
                RecyclerView.ViewHolder holder = null;
                switch (viewType){
                    case ItemType.TYPE_0:
                        itemView = LayoutInflater.from(MainActivity.this).inflate(R.layout.recycleview_item, parent, false);
                        holder = new PhotoViewHolder(itemView);
                        break;
                    case ItemType.TYPE_1:
                        itemView = LayoutInflater.from(MainActivity.this).inflate(R.layout.text_layout, parent, false);
                        holder = new TextViewHolder(itemView);
                        break;
                    case ItemType.TYPE_2:
                        itemView = LayoutInflater.from(MainActivity.this).inflate(R.layout.pic_layout, parent, false);
                        holder = new PictureViewHolder(itemView);
                        break;
                    case ItemType.TYPE_3:
                        break;
                    case ItemType.TYPE_4:
                        break;
                    case ItemType.TYPE_5:
                        break;

                }
                return holder;
            }

            @Override
            public void onBindViewHolder(@NonNull RecyclerView.ViewHolder myholder, int position, @NonNull List<Object> payloads) {

                if(myholder instanceof PhotoViewHolder){
                    PhotoViewHolder holder = (PhotoViewHolder) myholder;
                    if(payloads.get(0) instanceof PhotoBean){
                        PhotoBean photoBean = (PhotoBean) payloads.get(0);

                        if(photoBean.getClickButton() == 2){
                            holder.button_2.setBackgroundColor(Color.YELLOW);
                        }
                    }
                }

            }

            @RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN)
            @Override
            public void onBindViewHolder(final RecyclerView.ViewHolder myholder, final int position) {

                if(myholder instanceof PhotoViewHolder){
                    PhotoViewHolder holder = (PhotoViewHolder) myholder;
                    final PhotoBean photoBean = (PhotoBean) list.get(position);

                    Glide.with(MainActivity.this).load(photoBean.getUrl()).into(holder.imgView);
                    holder.tvName.setText(photoBean.getName());
                    if(photoBean.getClickButton() == 2){
                        holder.button_2.setBackgroundColor(Color.YELLOW);
                    }else{
                        holder.button_2.setBackground(null);
                    }

                    holder.imgView.setOnClickListener(new View.OnClickListener() {
                        @Override
                        public void onClick(View v) {
                            Toast.makeText(MainActivity.this, "点击了图片", Toast.LENGTH_SHORT).show();
                        }
                    });

                    holder.button_1.setOnClickListener(new View.OnClickListener() {
                        @Override
                        public void onClick(View v) {
                            Toast.makeText(MainActivity.this, "点击了按钮1", Toast.LENGTH_SHORT).show();
                            photoBean.setName("修改！");
                            photoBean.setUrl("http://pic29.nipic.com/20130511/9252150_174018365301_2.jpg");
                            adapter.notifyItemChanged(position);
                        }
                    });

                    holder.button_2.setOnClickListener(new View.OnClickListener() {
                        @Override
                        public void onClick(View v) {
                            Toast.makeText(MainActivity.this, "点击了按钮2", Toast.LENGTH_SHORT).show();
                            photoBean.setClickButton((byte) 2);
                            adapter.notifyItemChanged(position, photoBean);
                        }
                    });

                    holder.button_3.setOnClickListener(new View.OnClickListener() {
                        @Override
                        public void onClick(View v) {
                            Toast.makeText(MainActivity.this, "添加Item", Toast.LENGTH_SHORT).show();
                            list.add(position, new PhotoBean(photoBean.getUrl(), photoBean.getName(), photoBean.getClickButton()));
                            adapter.notifyItemInserted(position);
                            if(position != list.size()){
                                adapter.notifyItemRangeChanged(position, list.size() - position);
                            }
                        }
                    });

                    holder.button_4.setOnClickListener(new View.OnClickListener() {
                        @Override
                        public void onClick(View v) {
                            Toast.makeText(MainActivity.this, "删除Item", Toast.LENGTH_SHORT).show();
                            list.remove(position);
                            adapter.notifyItemRemoved(position);
                            if(position != list.size()){
                                adapter.notifyItemRangeChanged(position, list.size() - position);
                            }
                        }
                    });


                    holder.button_5.setOnClickListener(new View.OnClickListener() {
                        @Override
                        public void onClick(View v) {
                            Toast.makeText(MainActivity.this, "移动Item", Toast.LENGTH_SHORT).show();
                            Collections.swap(list,position,position+1);// 元素互换
                            adapter.notifyItemMoved(position, position + 1);
                            if(position != list.size()){
                                adapter.notifyItemRangeChanged(position, list.size() - position);
                            }
                        }
                    });
                }else if(myholder instanceof TextViewHolder){
                    TextViewHolder holder = (TextViewHolder) myholder;
                    TextBean textBean = (TextBean) list.get(position);
                    holder.tv_text.setText(textBean.getText() == null ? "" : textBean.getText());
                }else if(myholder instanceof PictureViewHolder){
                    PictureViewHolder holder = (PictureViewHolder) myholder;
                    PictureBean pictureBean = (PictureBean) list.get(position);
                    Glide.with(MainActivity.this).load(pictureBean.getUrl()).into(holder.picture);

                }
            }
        });
        mRecyclerView.setAdapter(adapter);
    }
}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <android.support.v7.widget.RecyclerView
        android:id="@+id/recycler_view"
        android:layout_margin="20dp"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
    </android.support.v7.widget.RecyclerView>


</android.support.constraint.ConstraintLayout>

MultiMainAdapter.java（为了使Adapter通用性，我把说有的数据处理和界面处理都移到Activity类里面了）

import android.content.Context;
import android.os.Build;
import android.support.annotation.NonNull;
import android.support.annotation.RequiresApi;
import android.support.v7.widget.RecyclerView;
import android.view.ViewGroup;

import java.util.List;

public class MultiMainAdapter<T> extends RecyclerView.Adapter<RecyclerView.ViewHolder>{

    private Context mContext;
    private List<T> mData;
    private MultiRecycleViewListener listener;

    public MultiMainAdapter(Context context, List<T> mData, MultiRecycleViewListener listener) {
        this.mContext = context;
        this.mData = mData;
        this.listener = listener;
    }

    /**
     * 设置数据
     * @param mData
     */
    public void setData(List<T> mData){
        this.mData = mData;
    }

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


    @Override
    public int getItemCount() {
        return mData != null ? mData.size() : 0;
    }


    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        return listener.onCreateViewHolder(parent, viewType);
    }

    @RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN)
    @Override
    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position, @NonNull List<Object> payloads) {
        if(payloads != null && !payloads.isEmpty()){
            listener.onBindViewHolder(holder, position, payloads);
        }else{
            onBindViewHolder(holder, position);
        }
    }

    @RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN)
    @Override
    public void onBindViewHolder(final RecyclerView.ViewHolder holder, final int position) {
        listener.onBindViewHolder(holder, position);
    }
}

MultiRecycleViewListener.java

public interface MultiRecycleViewListener<T> {

    int getItemViewType(int position);

    RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType);

    void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position, @NonNull List<Object> payloads);

    void onBindViewHolder(final RecyclerView.ViewHolder holder, final int position);

}

ItemType.java

public class ItemType {

    //PhotoBean类型
    public static final int TYPE_0 = 0;
    //纯文本类型
    public static final int TYPE_1 = 1;
    //纯图片类型
    public static final int TYPE_2 = 2;
    //按钮类型
    public static final int TYPE_3 = 3;
    //单选类型
    public static final int TYPE_4 = 4;
    //多选类型
    public static final int TYPE_5 = 5;

}

PhotoViewHolder.java

public class PhotoViewHolder extends RecyclerView.ViewHolder {
    public ImageView imgView;
    public TextView tvName;
    public Button button_1, button_2,button_3, button_4, button_5;

    public TextView tv_text;


    public PhotoViewHolder(@NonNull View itemView) {
        super(itemView);
        imgView = itemView.findViewById(R.id.image);
        tvName = itemView.findViewById(R.id.text);
        button_1 = itemView.findViewById(R.id.button_1);
        button_2 = itemView.findViewById(R.id.button_2);
        button_3 = itemView.findViewById(R.id.button_3);
        button_4 = itemView.findViewById(R.id.button_4);
        button_5 = itemView.findViewById(R.id.button_5);
    }
}

TextViewHolder.java

public class TextViewHolder extends RecyclerView.ViewHolder {

    public TextView tv_text;

    public TextViewHolder(View itemView) {
        super(itemView);
        tv_text = itemView.findViewById(R.id.tv_text);

    }

}

PictureViewHolder.java

public class PictureViewHolder extends RecyclerView.ViewHolder {
    public ImageView picture;

    public PictureViewHolder(View itemView) {
        super(itemView);
        picture = itemView.findViewById(R.id.picture);

    }
}

BaseBean.java

public class BaseBean {

    //Item类型
    private int itemViewType;

    public int getItemViewType() {
        return itemViewType;
    }

    public void setItemViewType(int itemViewType) {
        this.itemViewType = itemViewType;
    }
}

PhotoBean.java

public class PhotoBean extends BaseBean{

    private String name;

    private String url;

    private byte clickButton;//0:点击了图片，1：点击了按钮1,2：点击了按钮2

    public PhotoBean(){}

    public PhotoBean(String url, String name, byte clickButton){
        this.url = url;
        this.name = name;
        this.clickButton = clickButton;
        this.setItemViewType(ItemType.TYPE_0);
    }

    public String getName() {
        return name;
    }

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

    public String getUrl() {
        return url;
    }

    public void setUrl(String url) {
        this.url = url;
    }

    public byte getClickButton() {
        return clickButton;
    }

    public void setClickButton(byte clickButton) {
        this.clickButton = clickButton;
    }
}

TextBean.java

public class TextBean extends BaseBean {

    private String text;

    public TextBean(String text){
        this.text = text;
        this.setItemViewType(ItemType.TYPE_1);
    }

    public String getText() {
        return text;
    }

    public void setText(String text) {
        this.text = text;
    }
}

PictureBean.java

public class PictureBean extends BaseBean {

    private String url;

    public PictureBean(String url){
        this.url = url;
        this.setItemViewType(ItemType.TYPE_2);
    }

    public String getUrl() {
        return url;
    }

    public void setUrl(String url) {
        this.url = url;
    }
}

recycleview_item.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/linear"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@color/bgbgbg"
    android:orientation="vertical"
    android:layout_margin="5dp">


    <com.jiangxi.login.myapplication.CustomImageView
        android:id="@+id/image"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:paddingTop="5dp"
        android:scaleType="centerCrop"
        android:paddingBottom="5dp"
        android:layout_gravity="center_horizontal" />


    <TextView
        android:id="@+id/text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="5dp"
        android:layout_gravity="center_horizontal"
        android:textSize="18sp"
        android:text="11111111111111111111111111111111111111111111111111111111"
        android:gravity="center_horizontal"
        android:lines="1"
        android:ellipsize="end"
        android:textColor="@color/colorAccent"
        android:visibility="visible" />

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:layout_gravity="center_horizontal"
        android:padding="10dp">

        <Button
            android:id="@+id/button_1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="按钮1"/>

        <Button
            android:id="@+id/button_2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="30dp"
            android:text="按钮2"/>
    </LinearLayout>

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:layout_gravity="center_horizontal">

        <Button
            android:id="@+id/button_3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="添加"/>

        <Button
            android:id="@+id/button_4"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="删除"/>

        <Button
            android:id="@+id/button_5"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="移动"/>
    </LinearLayout>
</LinearLayout>

text_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@color/bgbgbg">

    <TextView
        android:id="@+id/tv_text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:padding="20dp"
        android:textSize="20sp"
        android:textColor="@color/colorAccent"/>
</android.support.constraint.ConstraintLayout>

pic_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@color/bgbgbg">

    <com.jiangxi.login.myapplication.CustomImageView
        android:id="@+id/picture"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:paddingTop="5dp"
        android:scaleType="centerCrop"
        android:paddingBottom="5dp"
        android:layout_gravity="center_horizontal" />

</android.support.constraint.ConstraintLayout>

CustomImageView.java

import android.content.Context;
import android.support.v7.widget.AppCompatImageView;
import android.util.AttributeSet;

public class CustomImageView extends AppCompatImageView {

    public CustomImageView(Context context) {
        super(context);
    }

    public CustomImageView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public CustomImageView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {

        int width = MeasureSpec.getSize(widthMeasureSpec);

        setMeasuredDimension(width, width);
    }

}

以上就是多类型recycleview的所有代码了。

16.gif

最后本人要强调一下重要知识点：写Demo太辛苦了，点个赞再走呗

最后编辑于：2019.10.23 16:10:14

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