Android RecycleView

最新推荐文章于 2024-12-31 10:40:21 发布

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本文详细介绍了如何在Android中使用RecyclerView实现自定义列表项，包括创建ViewHolder、绑定数据及布局管理器的设置。

选择app，右键 — Open Module Settings — Dependencies — + Library Dependency — recycleview-v7

public class MainActivity extends Activity {

    private RecyclerView rv;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        rv = new RecyclerView(this);
        setContentView(rv);
        rv.setLayoutManager(new LinearLayoutManager(this));
        rv.setAdapter(new RecyclerView.Adapter() {

            class ViewHolder extends RecyclerView.ViewHolder {

                private TextView tv;

                public ViewHolder(TextView itemView) {
                    super(itemView);
                    tv = itemView;
                }

                public TextView getTv() {
                    return tv;
                }

            }

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

            @Override
            public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
                ViewHolder vh = (ViewHolder)holder;
                vh.getTv().setText("Item"+position);
            }

            @Override
            public int getItemCount() {
                return 100;
            }
        });
    }
}

使用资源文件自定义列表项：

public class MainActivity extends Activity {

    private RecyclerView rv;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        rv = new RecyclerView(this);
        setContentView(rv);
        rv.setLayoutManager(new LinearLayoutManager(this));
        rv.setAdapter(new RecyclerView.Adapter() {

            class ViewHolder extends RecyclerView.ViewHolder {

                private View root;
                private TextView tvTitle,tvContent;

                public ViewHolder(View root) {
                    super(root);
                    tvTitle = (TextView)root.findViewById(R.id.tvTitle);
                    tvContent = (TextView)root.findViewById(R.id.tvContent);
                }

                public TextView getTvTitle() {
                    return tvTitle;
                }

                public TextView getTvContent() {
                    return tvContent;
                }
            }

            @Override
            public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
                return new ViewHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.list_cell,null));
            }

            @Override
            public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
                ViewHolder vh = (ViewHolder)holder;
                CellData cd = data[position];
                vh.getTvTitle().setText(cd.title);
                vh.getTvContent().setText(cd.content);
            }

            @Override
            public int getItemCount() {
                return data.length;
            }

            private CellData[] data = new CellData[]{new CellData("iOS","my first career"),new CellData("Android","extra career")};
        });
    }


}