RecyclerView线性布局，表格布局，fresco图片获取，点击删除条目

迈不过友情╰ 2023-10-17 21:49 7阅读 0赞

例：

![70][]

RecyclerView线性布局，表格布局，

点击弹出对话框删除条目

fresco图片获取

添加依赖：

dependencies {
      
        implementation 'com.android.support:recyclerview-v7:26.1.0'
        compile 'com.squareup.okhttp3:okhttp:3.4.2'
        compile 'com.google.code.gson:gson:2.2.4'
        compile 'com.facebook.fresco:fresco:1.5.0'
    }

添加权限：

<uses-permission android:name="android.permission.INTERNET"/>

http://p6acqdvet.bkt.clouddn.com/\_data\_json.json

//http://p6acqdvet.bkt.clouddn.com/_data_json.json
    public class Bean {
        private List<JsonBean> json;
        private List<LikeBean> like;
        public List<JsonBean> getJson() {
            return json;
        }
        public void setJson(List<JsonBean> json) {
            this.json = json;
        }
        public List<LikeBean> getLike() {
            return like;
        }
        public void setLike(List<LikeBean> like) {
            this.like = like;
        }
        public static class JsonBean {
            /**
             * id : 0
             * image : http://p6563v2ck.bkt.clouddn.com/t1.jpg
             * name : DC FIRST INFANTRY M TEES 短袖T恤
             * price : 299.00
             * agio : 400.00
             * amount : 10
             * chart : http://p6563v2ck.bkt.clouddn.com/t1.jpg
             * swiper : [{"img":"http://p6563v2ck.bkt.clouddn.com/t1.jpg"},{"img":"http://p6563v2ck.bkt.clouddn.com/t1.jpg"}]
             */
            private int id;
            private String image;
            private String name;
            private String price;
            private String agio;
            private String amount;
            private String chart;
            private List<SwiperBean> swiper;
            public int getId() {
                return id;
            }
            public void setId(int id) {
                this.id = id;
            }
            public String getImage() {
                return image;
            }
            public void setImage(String image) {
                this.image = image;
            }
            public String getName() {
                return name;
            }
            public void setName(String name) {
                this.name = name;
            }
            public String getPrice() {
                return price;
            }
            public void setPrice(String price) {
                this.price = price;
            }
            public String getAgio() {
                return agio;
            }
            public void setAgio(String agio) {
                this.agio = agio;
            }
            public String getAmount() {
                return amount;
            }
            public void setAmount(String amount) {
                this.amount = amount;
            }
            public String getChart() {
                return chart;
            }
            public void setChart(String chart) {
                this.chart = chart;
            }
            public List<SwiperBean> getSwiper() {
                return swiper;
            }
            public void setSwiper(List<SwiperBean> swiper) {
                this.swiper = swiper;
            }
            public static class SwiperBean {
                /**
                 * img : http://p6563v2ck.bkt.clouddn.com/t1.jpg
                 */
                private String img;
                public String getImg() {
                    return img;
                }
                public void setImg(String img) {
                    this.img = img;
                }
            }
        }
        public static class LikeBean {
            /**
             * id : 5
             * image : http://p6563v2ck.bkt.clouddn.com/c1.jpg
             * name : corade 藏青格纹冲锋衣
             * price : 138.00
             * amount : 10
             * chart : http://p6563v2ck.bkt.clouddn.com/c1.jpg
             * swiper : [{"img":"http://p6563v2ck.bkt.clouddn.com/c1.jpg"},{"img":"http://p6563v2ck.bkt.clouddn.com/c1.jpg"}]
             */
            private int id;
            private String image;
            private String name;
            private String price;
            private String amount;
            private String chart;
            private List<SwiperBeanX> swiper;
            public int getId() {
                return id;
            }
            public void setId(int id) {
                this.id = id;
            }
            public String getImage() {
                return image;
            }
            public void setImage(String image) {
                this.image = image;
            }
            public String getName() {
                return name;
            }
            public void setName(String name) {
                this.name = name;
            }
            public String getPrice() {
                return price;
            }
            public void setPrice(String price) {
                this.price = price;
            }
            public String getAmount() {
                return amount;
            }
            public void setAmount(String amount) {
                this.amount = amount;
            }
            public String getChart() {
                return chart;
            }
            public void setChart(String chart) {
                this.chart = chart;
            }
            public List<SwiperBeanX> getSwiper() {
                return swiper;
            }
            public void setSwiper(List<SwiperBeanX> swiper) {
                this.swiper = swiper;
            }
            public static class SwiperBeanX {
                /**
                 * img : http://p6563v2ck.bkt.clouddn.com/c1.jpg
                 */
                private String img;
                public String getImg() {
                    return img;
                }
                public void setImg(String img) {
                    this.img = img;
                }
            }
        }
    }

MainActivity 主要方法类：

public class MainActivity extends AppCompatActivity implements View.OnClickListener{
        private static final int SUCCESS = 492;
        List<Bean.JsonBean> datas = new ArrayList<>();
        String path = "http://p6acqdvet.bkt.clouddn.com/_data_json.json";
        Handler handler = new Handler() {
            @Override
            public void handleMessage(Message msg) {
                super.handleMessage(msg);
                switch (msg.what) {
                    case SUCCESS:
                        String tvv = (String) msg.obj;
                        Gson gson = new Gson();
                        Bean bean = gson.fromJson(tvv, Bean.class);
                        List<Bean.JsonBean> data = bean.getJson();
                        datas.addAll(data);
                }
            }
        };
    
        private recyclerviewAdapter adapter;
        private RecyclerView mRlv;
        private Button ll;
        private Button bg;
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            initadd();//初始化
            getOk();
        }
    
        private void initadd() {
            mRlv = (RecyclerView) findViewById(R.id.rlv);
            ll = findViewById(R.id.ll);//线性布局
            bg = findViewById(R.id.bg);//表格布局
    
            //按钮的监听
            ll.setOnClickListener(this);
            bg.setOnClickListener(this);
        }
    
        //按钮的监听
        @Override
        public void onClick(View view) {
            switch (view.getId()){
                case R.id.ll:
                    //线性布局管理器
                    mRlv.setLayoutManager(new LinearLayoutManager(this,LinearLayoutManager.VERTICAL,false));
                    setadapter();
                    break;
                case R.id.bg:
                    //表格布局管理器
                    mRlv.setLayoutManager(new GridLayoutManager(this,2));
                    setadapter();
                    break;
            }
        }
        private void setadapter() {
            adapter = new recyclerviewAdapter(this, datas);
            mRlv.setAdapter(adapter);
            adapter.SetOnItemClickListener(new recyclerviewAdapter.OnItemClickListener() {
                @Override
                public void onItemClick(int position) {
                    adapter.swipe(position);
                }
            });
        }
        private void getOk() {
            new Thread() {
                @Override
                public void run() {
                    super.run();
                    //请求网络得到相应对象
                    OkHttpClient client = new OkHttpClient.Builder().build();
                    Request request = new Request.Builder().url(path).build();
                    try {
                        Response response = client.newCall(request).execute();
                        //得到数据并转型
                        String s = response.body().string();
                        //更新UI不能在子线程中,使用Handler
                        Message message = handler.obtainMessage();
                        message.obj = s;
                        message.what = SUCCESS;
                        handler.sendMessage(message);
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            }.start();
            return;
        }
    }

activity\_main 布局：

<?xml version="1.0" encoding="utf-8"?>
    <LinearLayout
        android:orientation="vertical"
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:context=".MainActivity">
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">
            <Button
                android:layout_width="0dp"
                android:layout_weight="1"
                android:layout_height="wrap_content"
                android:text="线性布局"
                android:id="@+id/ll"/>
            <Button
                android:layout_width="0dp"
                android:layout_weight="1"
                android:layout_height="wrap_content"
                android:text="表格布局"
                android:id="@+id/bg"/>
        </LinearLayout>
    
        <android.support.v7.widget.RecyclerView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:id="@+id/rlv"/>
    
    </LinearLayout>

recyclerviewAdapter 适配器类：

public class recyclerviewAdapter extends RecyclerView.Adapter implements MoveSwipeListener {
        private Context context;
        private List<Bean.JsonBean> datas;
        private OnItemClickListener onItemClickListener;
        public recyclerviewAdapter(Context context, List<Bean.JsonBean> datas) {
            this.context = context;
            this.datas = datas;
        }
        @Override
        public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
            View view = LinearLayout.inflate(context, R.layout.item, null);
            MyViewHolder vh = new MyViewHolder(view);
            return vh;
        }
        @Override
        public void onBindViewHolder(RecyclerView.ViewHolder holder, final int position) {
            MyViewHolder vh= (MyViewHolder) holder;
            vh.tv.setText(datas.get(position).getName());
            vh.tv2.setText(datas.get(position).getAgio());
            vh.iv.setImageURI(Uri.parse(datas.get(position).getImage()));
    //        ImageLoader.getInstance().displayImage(datas.get(position).getImage(),vh.iv, ImageloaderUtil.getImageOptions());
    
    //        final String picUrl = datas.get(position).getImage();
    //        final Uri uri = Uri.parse(picUrl);
    //        vh.iv.setImageURI(uri);
    
            vh.itemView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    if (onItemClickListener!=null){
                        onItemClickListener.onItemClick(position);
                    }
    
                    /**
                     * 点击条目删除
                     */
                    AlertDialog.Builder builder = new AlertDialog.Builder(context);
                    builder.setIcon(R.mipmap.ic_launcher);
                    builder.setTitle("我是对话框");
                    builder.setMessage("我是对话框的内容");
                    builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            Toast.makeText(context, "点击了取消按钮", Toast.LENGTH_SHORT).show();
                            dialog.dismiss();
                        }
                    });
                    builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            Toast.makeText(context, "点击了确定的按钮", Toast.LENGTH_SHORT).show();
                            dialog.dismiss();
                            //移除数据
                            datas.remove(position);
                            //条目刷新
                            notifyDataSetChanged();
                        }
                    });
                    AlertDialog dialog = builder.create();
                    dialog.show();
                }
            });
        }
        @Override
        public int getItemCount() {
            return datas.size();
        }
        private class MyViewHolder extends  RecyclerView.ViewHolder {
            private final ImageView iv;
            private final TextView tv;
            private final TextView tv2;
            public MyViewHolder(View itemView) {
                super(itemView);
                iv = itemView.findViewById(R.id.iv);
                tv = itemView.findViewById(R.id.tv);
                tv2 = itemView.findViewById(R.id.tv2);
            }
        }
        public   interface OnItemClickListener {
            void onItemClick(int position);
        }
        public void SetOnItemClickListener(OnItemClickListener onItemClickListener){
            this.onItemClickListener=onItemClickListener;
        }
        @Override
        public void onMove(int oldPosition, int newPosition) {
        }
        @Override
        public void swipe(final int position) {
        }
    }

item 适配器布局：

<?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">
    
        <com.facebook.drawee.view.SimpleDraweeView
            android:id="@+id/iv"
            android:layout_width="match_parent"
            android:layout_height="300dp" />
    
        <LinearLayout
            android:orientation="vertical"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">
            <TextView
                android:id="@+id/textView"
                android:textSize="20dp"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="商品信息：" />
            <TextView
                android:id="@+id/tv"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:text="tv" />
            <LinearLayout
                android:orientation="horizontal"
                android:layout_width="match_parent"
                android:layout_height="wrap_content">
                <TextView
                    android:id="@+id/textView2"
                    android:textSize="20dp"
                    android:layout_width="80dp"
                    android:layout_height="wrap_content"
                    android:text="价格：" />
                <TextView
                    android:id="@+id/tv2"
                    android:textSize="20dp"
                    android:textColor="#f00"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="tv2" />
            </LinearLayout>
        </LinearLayout>
    </LinearLayout>

MoveSwipeListener 接口：

public interface MoveSwipeListener {
        public void onMove(int oldPosition, int newPosition);
        public void swipe(int position);
    }

ItemTouchCallBack

public class ItemTouchCallBack extends ItemTouchHelper.Callback {
        private recyclerviewAdapter myAdapter;
        public ItemTouchCallBack(recyclerviewAdapter myAdapter) {
            this.myAdapter = myAdapter;
        }
        /**
         * 获取移动的标记  移动和删除
         * @param recyclerView
         * @param viewHolder
         * @return
         */
        @Override
        public int getMovementFlags(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder) {
            //设置移动的标记
            int dragFlag=ItemTouchHelper.UP|ItemTouchHelper.DOWN|ItemTouchHelper.LEFT|ItemTouchHelper.RIGHT;
            //设置删除的标记
            int swipFlag=ItemTouchHelper.LEFT|ItemTouchHelper.RIGHT;
            //制作两种标记
            int i = ItemTouchHelper.Callback.makeMovementFlags(dragFlag, swipFlag);
            return i;
        }
        /**
         * @param recyclerView
         * @param viewHolder   原先的viewHolder
         * @param target       拖动后的viewHolder
         * @return
         */
        @Override
        public boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, RecyclerView.ViewHolder target) {
            //切换位置
            int oldPosition = viewHolder.getAdapterPosition();
            int newPosition = target.getAdapterPosition();
            //交换位置--
            myAdapter.onMove(oldPosition,newPosition);
            return true;
        }
        /**
         * 左右移动
         * @param viewHolder
         * @param direction
         */
        @Override
        public void onSwiped(RecyclerView.ViewHolder viewHolder, int direction) {
            int adapterPosition = viewHolder.getAdapterPosition();
            myAdapter.swipe(adapterPosition);
        }
    }

MyApp 类：（记得在清单文件中添加name）

public class MyApp  extends Application {
        @Override
        public void onCreate() {
            super.onCreate();
            //fresco的初始化
            Fresco.initialize(this);
        }
    }

[70]: https://img-blog.csdn.net/20180612141431788?watermark/2/text/aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2p1bl90b25n/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70