RecyclerView三种布局

线性布局

activity

//线性布局管理器
        LinearLayoutManager manager=new LinearLayoutManager(this);
        //设置方向
        manager.setOrientation(LinearLayoutManager.VERTICAL);
        //设置线性布局
        recyclerView_1.setLayoutManager(manager);
        //间隔线
        DividerItemDecoration dividerItemDecoration=new DividerItemDecoration(this,DividerItemDecoration.VERTICAL);
        dividerItemDecoration.setDrawable(getDrawable(R.drawable.bac));
        recyclerView_1.addItemDecoration(dividerItemDecoration);
        List<String> list=new ArrayList<>();
        for(int i=0;i<100;i++){
            list.add("数据"+i);
        }
        MyRecyclerAdapter myRecyclerAdapter = new MyRecyclerAdapter(this, list);
        recyclerView_1.setAdapter(myRecyclerAdapter);

xml布局

<TextView
        android:id="@+id/recycler_text1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textSize="19dp"
        android:textColor="@android:color/holo_blue_light"
        android:textStyle="bold"/>

适配器

public class MyRecyclerAdapter extends RecyclerView.Adapter<MyRecyclerAdapter.Viewholder>{
    Context context;
    List<String> list;
    public MyRecyclerAdapter(Context context,List<String> list){
        this.context=context;
        this.list=list;
    }

    //把布局绑定给viewholder
    @NonNull
    @Override
    public Viewholder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
        View view= LayoutInflater.from(context).inflate(R.layout.recycler_item1,viewGroup,false);
        return new Viewholder(view);
    }

   //绑定布局并给布局中的内容添加数据
    @Override
    public void onBindViewHolder(@NonNull Viewholder viewholder, final int i) {
        viewholder.textView.setText(list.get(i));
        viewholder.textView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast.makeText(context,"您点击了"+i,Toast.LENGTH_SHORT).show();
            }
        });
        viewholder.textView.setOnLongClickListener(new View.OnLongClickListener() {
            @Override
            public boolean onLongClick(View v) {
                Toast.makeText(context,"您长按了"+i,Toast.LENGTH_SHORT).show();
                return true;
            }
        });
    }


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

    class Viewholder extends RecyclerView.ViewHolder{
         private TextView textView;
        public Viewholder(@NonNull View itemView) {
            super(itemView);
            textView=itemView.findViewById(R.id.recycler_text1);
        }
    }
}

效果图

网格布局

activity

 //网格布局管理器  2是网格布局的列数
        GridLayoutManager manager=new GridLayoutManager(this,2);
        //设置方向
        manager.setOrientation(GridLayoutManager.VERTICAL);
        //设置给recyclerview
        recyclerView_1.setLayoutManager(manager);
        //间隔线
        DividerItemDecoration dividerItemDecoration=new DividerItemDecoration(this,DividerItemDecoration.VERTICAL);
        dividerItemDecoration.setDrawable(getDrawable(R.drawable.bac));
        recyclerView_1.addItemDecoration(dividerItemDecoration);

        List<String> list=new ArrayList<>();
        for(int i=0;i<100;i++){
            list.add("http://www.qubaobei.com/ios/cf/uploadfile/132/9/8289.jpg");
        }
        MyRecyclerAdapter2 myRecyclerAdapter = new MyRecyclerAdapter2(this, list);
        recyclerView_1.setAdapter(myRecyclerAdapter);

xml布局

  <ImageView
        android:id="@+id/recycler_image2"
        android:layout_width="50dp"
        android:layout_height="50dp"
        android:layout_centerInParent="true"/>

适配器

public class MyRecyclerAdapter2 extends RecyclerView.Adapter<MyRecyclerAdapter2.Viewholder>{
    Context context;
    List<String> list;
    public MyRecyclerAdapter2(Context context, List<String> list){
        this.context=context;
        this.list=list;
    }


    @NonNull
    @Override
    public Viewholder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
        View view= LayoutInflater.from(context).inflate(R.layout.recycler_item2,viewGroup,false);
        return new Viewholder(view);
    }

    @Override
    public void onBindViewHolder(@NonNull Viewholder viewholder, final int i) {
        Glide.with(context).load(list.get(i)).into(viewholder.imageView);
        viewholder.imageView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast.makeText(context,"您点击了"+i,Toast.LENGTH_SHORT).show();
            }
        });
        viewholder.imageView.setOnLongClickListener(new View.OnLongClickListener() {
            @Override
            public boolean onLongClick(View v) {
                Toast.makeText(context,"您长按了"+i,Toast.LENGTH_SHORT).show();
                return true;
            }
        });
    }


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

    class Viewholder extends RecyclerView.ViewHolder{
         private ImageView imageView;
        public Viewholder(@NonNull View itemView) {
            super(itemView);
            imageView=itemView.findViewById(R.id.recycler_image2);
        }
    }
}

效果图

瀑布流布局

activity

 //瀑布流
        StaggeredGridLayoutManager staggeredGridLayoutManager=new StaggeredGridLayoutManager(2,StaggeredGridLayoutManager.VERTICAL);
        //设置布局
        recyclerView_1.setLayoutManager(staggeredGridLayoutManager);
        //间隔线
        DividerItemDecoration dividerItemDecoration=new DividerItemDecoration(this,DividerItemDecoration.VERTICAL);
        dividerItemDecoration.setDrawable(getDrawable(R.drawable.bac));
        recyclerView_1.addItemDecoration(dividerItemDecoration);
        List<Food> list=new ArrayList<>();
        for(int i=0;i<50;i++){
             Food food=new Food();
             food.name="数据"+i;
             food.pic="http://www.qubaobei.com/ios/cf/uploadfile/132/9/8289.jpg";
             list.add(food);
        }
        MyRecyclerAdapter3 myRecyclerAdapter = new MyRecyclerAdapter3(this, list);
        recyclerView_1.setAdapter(myRecyclerAdapter);

xml布局

  <TextView
        android:id="@+id/recycler_text3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="19dp"
        android:textColor="@android:color/holo_blue_light"
        android:textStyle="bold"/>
    <ImageView
        android:id="@+id/recycler_image3"
        android:layout_width="50dp"
        android:layout_height="50dp"
        android:layout_centerInParent="true"/>

适配器

public class MyRecyclerAdapter3 extends RecyclerView.Adapter<MyRecyclerAdapter3.Viewholder>{
    Context context;
    List<Food> list;
    public MyRecyclerAdapter3(Context context, List<Food> list){
        this.context=context;
        this.list=list;
    }


    @NonNull
    @Override
    public Viewholder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
        View view= LayoutInflater.from(context).inflate(R.layout.recycler_item3,viewGroup,false);
        return new Viewholder(view);
    }

    @Override
    public void onBindViewHolder(@NonNull Viewholder viewholder, final int i) {
        Glide.with(context).load(list.get(i).pic).into(viewholder.imageView);
        viewholder.textView.setText(list.get(i).name);
        ViewGroup.LayoutParams layoutParams = viewholder.imageView.getLayoutParams();
        int run=(int)(Math.random()*101+100);
        layoutParams.height=run;
        viewholder.imageView.setLayoutParams( layoutParams);
        viewholder.imageView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast.makeText(context,"您点击了"+i,Toast.LENGTH_SHORT).show();
            }
        });
        viewholder.imageView.setOnLongClickListener(new View.OnLongClickListener() {
            @Override
            public boolean onLongClick(View v) {
                Toast.makeText(context,"您长按了"+i,Toast.LENGTH_SHORT).show();
                return true;
            }
        });
    }


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

    class Viewholder extends RecyclerView.ViewHolder{
         private ImageView imageView;
         private TextView textView;
        public Viewholder(@NonNull View itemView) {
            super(itemView);
            textView=itemView.findViewById(R.id.recycler_text3);
            imageView=itemView.findViewById(R.id.recycler_image3);
        }
    }
}

效果图