横向listview的最佳实现——RecycleView

转载注明出处：http://blog.youkuaiyun.com/sange77/article/details/73753037

前些天，要写一个横向的列表，想着是将平时竖向的listview 横着来弄，挺麻烦的。后来，发现RecycleView这货就可以实现，体验效果也是很好！
##看效果

##上代码

• gradle 中引用

compile 'com.android.support:recyclerview-v7:26.0.0-alpha1'

• Activity

public class CustomViewActivity extends Activity {
    private RecyclerView recyclerView;
    private MyRecyclerViewAdapter mAdapter = new MyRecyclerViewAdapter();

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_custom_view);
        initView();
    }

    private void initView() {
        recyclerView = (RecyclerView) findViewById(R.id.rv_custom_view);
        recyclerView.setAdapter(mAdapter);
        LinearLayoutManager llm = new LinearLayoutManager(this);
        llm.setOrientation(LinearLayoutManager.HORIZONTAL);// 设置为横向的布局
        recyclerView.setLayoutManager(llm);
        recyclerView.addItemDecoration(new DividerItemDecoration(this,DividerItemDecoration.HORIZONTAL));// 设置分割线
    }

注意：LinearLayoutManager.HORIZONTAL要和DividerItemDecoration.HORIZONTAL保持一直，才会有正常的分割线效果

• Activity XML

<?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="match_parent"
    android:gravity="center_horizontal">
    <android.support.v7.widget.RecyclerView
        android:id="@+id/rv_custom_view"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>
</LinearLayout>

• MyRecyclerViewAdapter

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

    @Override
    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_recyclerview,parent,false);
        return new MyViewHolder(view);
    }

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

    }

    @Override
    public int getItemCount() {
        return 9;
    }

    class MyViewHolder extends RecyclerView.ViewHolder{

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

• item_recyclerview

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

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="测试文字"
        android:textSize="18sp"
        android:textStyle="bold"/>
    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="这是详情内容....."/>
</LinearLayout>

**item 要不要适应全屏 控制大小， 主要改item_recyclerview.xml中根布局的android:layout_width和android:layout_height **
ok， 就这么多！

转载注明出处：http://blog.youkuaiyun.com/sange77/article/details/73753037