RecyclerView实现checkBox

最新推荐文章于 2024-08-30 10:18:44 发布

不倒翁的倔强

最新推荐文章于 2024-08-30 10:18:44 发布

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分类专栏：小Demo

本文链接：https://blog.youkuaiyun.com/QiangDan123/article/details/72081937

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本文主要介绍如何在Android中通过RecyclerView来实现CheckBox的选择与交互功能，涵盖了适配器的设置和点击事件处理。

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public class MainActivity extends AppCompatActivity implements View.OnClickListener {

private RecyclerView mRecyclerView;
private Button mBtn;
private List<Goods.DataBean> mList;
private ArrayList<Goods.DataBean> mDataList = new ArrayList<>();
private MyRecyclerAdapter mAdapter;
private String mUrl = "http://m.yunifang.com/yunifang/mobile/goods/getall?random=39986&encode=2092d7eb33e8ea0a7a2113f2d9886c90&category_id=17";
private String mData;
private Handler mHandler=new Handler();

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

private void initData() {
    new Thread(new Runnable() {
        @Override
        public void run() {
            mData = OkHttpManager.getSyncString(mUrl);
            Goods goods = GsonUtil.getBean(mData, Goods.class);
            mList = goods.getData();
    mHandler.post(new Runnable() {
        @Override
        public void run() {
            setRecyclerView();
        }
    });
        }
    }).start();
}

private void setRecyclerView() {
    //获取布局管理器
    LinearLayoutManager layoutManager = new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false);
    mRecyclerView.setLayoutManager(layoutManager);
    mAdapter = new MyRecyclerAdapter(this, mList);
    mRecyclerView.setAdapter(mAdapter);
    //添加分割线
    mRecyclerView.addItemDecoration(new DecorationUtil(this, DecorationUtil.VERTICAL_LIST));
    //添加点击事件
    mAdapter.setRecyclerViewOnItemClickListener(new MyRecyclerAdapter.RecyclerViewOnItemClickListener() {
        @Override
        public void onItemClickListener(View view, int position) {
            //设置选中的项
            mAdapter.setSelectItem(position);
        }

        @Override
        public boolean onItemLongClickListener(View view, int position) {
            mAdapter.setShowBox();
            //设置选中的项
            mAdapter.setSelectItem(position);
            mAdapter.notifyDataSetChanged();
            return true;
        }
    });
}

private void initView() {
    mRecyclerView = (RecyclerView) findViewById(R.id.recyclerview);
    mBtn = (Button) findViewById(R.id.btnOk);
    mBtn.setOnClickListener(this);
}

@Override
public void onClick(View v) {
    mDataList.clear();
    //获取你选中的item
    Map<Integer, Boolean> map = mAdapter.getMap();
    for (int i = 0; i < map.size(); i++) {
        if (map.get(i)) {
            mDataList.add(mList.get(i));
        }
    }

}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.main, menu);
    return super.onCreateOptionsMenu(menu);
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
        //全选
        case R.id.all:
            Map<Integer, Boolean> map = mAdapter.getMap();
            for (int i = 0; i < map.size(); i++) {
                map.put(i, true);
                mAdapter.notifyDataSetChanged();
            }
            break;
        //全不选
        case R.id.all_no:
            Map<Integer, Boolean> m = mAdapter.getMap();
            for (int i = 0; i < m.size(); i++) {
                m.put(i, false);
                mAdapter.notifyDataSetChanged();
            }
            break;
    }
    return super.onOptionsItemSelected(item);
}

}

//适配器类
public class MyRecyclerAdapter extends RecyclerView.Adapter