RecyclerView多条目展示

我也不太懂这个代码的基本意思，有的地方还有疑惑，先把代码粘上后期再修改批注。
需要添加的依赖

 compile 'com.android.support:recyclerview-v7:26.0.0-alpha1'  compile 'com.github.bumptech.glide:glide:4.0.0'

MainActivity类

public class MainActivity extends AppCompatActivity {    private List<Moudle> list = new ArrayList<>();    RecyclerView recyclerView;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        recyclerView = (RecyclerView) findViewById(R.id.recyclerview3);        for (int i = 0; i < 30; i++) {            Moudle mon = new Moudle();            mon.setName("惊悚故事" + i);            mon.setTitle("Hello" + i);            mon.setSort("http://cover2.u17i.com/2017/07/18899201_1499070616_3js3vV532Fev.sbig.jpg?1499421235");            mon.setType(i);            list.add(mon);        }        final Myadapter adapter = new Myadapter(list);        GridLayoutManager layoutManager = new GridLayoutManager(this, 12);        layoutManager.setSpanSizeLookup(new GridLayoutManager.SpanSizeLookup() {            @Override            public int getSpanSize(int position) {                int itemviewType = adapter.getItemViewType(position);                 switch (itemviewType) {                    case 0:                        return 12;                    case 1:                        return 4;                    case 2:                        return 4;                    case 3:                        return 4;                    case 4:                        return 4;                    case 5:                        return 6;                    case 6:                        return 6;                    case 7:                        return 6;                    default:                        return 6;                }            }        });        LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);        recyclerView.setLayoutManager(layoutManager);        recyclerView.setAdapter(adapter);    }}

RecyclerView的适配器类

public class Myadapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {    List<Moudle> list;    public Myadapter(List<Moudle> list) {        this.list = list;    }    @Override    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {        switch (viewType) {            case 0:                return new ViewHolderOne(getView(parent, R.layout.recycler));            case 1:                return new ViewHolderTwo(getView(parent, R.layout.recycler2));            case 2:                return new ViewHolderTwo(getView(parent, R.layout.recycler2));            case 3:                return new ViewHolderTwo(getView(parent, R.layout.recycler2));            case 4:                return new ViewHolderTwo(getView(parent, R.layout.recycler2));            case 5:                return new ViewHolderTwo(getView(parent, R.layout.recycler2));            case 6:                return new ViewHolderTwo(getView(parent, R.layout.recycler2));            case 7:                return new ViewHolderTwo(getView(parent, R.layout.recycler2));            default:                return new ViewHolderTwo(getView(parent, R.layout.recycler2));        }    }    @Override    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {        if (holder instanceof ViewHolderOne) {            ((ViewHolderOne) holder).textView.setText(list.get(position).name);        } else if (holder instanceof ViewHolderTwo) {            ((ViewHolderTwo) holder).title.setText(list.get(position).title);            ((ViewHolderTwo) holder).sort.setText(list.get(position).name);            String picture = list.get(position).getSort();            Glide.with(((ViewHolderTwo) holder).imageView).load(picture).into(((ViewHolderTwo) holder).imageView);        }    }    @Override    public int getItemCount() {        return list == null ? 0 : list.size();    }    @Override    public int getItemViewType(int position) {        return list.get(position).type % 8;    }    private View getView(ViewGroup parent, int recycler) {        View inflate = LayoutInflater.from(parent.getContext()).inflate(recycler, parent, false);        return inflate;    }    static class ViewHolderOne extends RecyclerView.ViewHolder {        TextView textView;        public ViewHolderOne(View itemView) {            super(itemView);            textView = (TextView) itemView.findViewById(R.id.text);        }    }    static class ViewHolderTwo extends RecyclerView.ViewHolder {        TextView title, sort;        ImageView imageView;        public ViewHolderTwo(View itemView) {            super(itemView);            imageView = (ImageView) itemView.findViewById(R.id.images);            title = (TextView) itemView.findViewById(R.id.title);            sort = (TextView) itemView.findViewById(R.id.sort);        }    }}

Moudle 属性类

public class Moudle {    public  String title;    public  String name;    public  String sort;    public  int type;    public String getTitle() {        return title;    }    public void setTitle(String title) {        this.title = title;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public String getSort() {        return sort;    }    public void setSort(String sort) {        this.sort = sort;    }    public void setType(int type) {        this.type = type;    }}

activity_main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"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:orientation="vertical"    tools:context="com.example.recyclerview3.MainActivity">    <!--注意高设置成自适应，设置成充满的话一行就占一页啦-->    <android.support.v7.widget.RecyclerView        android:id="@+id/recyclerview3"        android:layout_width="match_parent"        android:layout_height="wrap_content"/></LinearLayout>

recycler布局

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical" android:layout_width="match_parent"    android:layout_height="wrap_content"><TextView    android:id="@+id/text"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:text="ddd"/></LinearLayout>

recycler2布局

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical" android:layout_width="match_parent"    android:layout_height="wrap_content"><TextView    android:id="@+id/title"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:text="dfdf"    android:textSize="20sp"/>    <TextView        android:id="@+id/sort"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:textSize="20sp"        android:text="dfdf"/>    <ImageView        android:id="@+id/images"        android:layout_width="wrap_content"        android:layout_height="wrap_content" /></LinearLayout>