android listview嵌套gridview动态增加gridview的item项

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/generallizhong/article/details/80688058

这个功能主要是在数据结构这一块，先上图看看效果：

重点 是放在左边这个listview嵌套gridview，可删除gridview中item,也可点击最后一项手动增加item数据，这里看几行重要的代码，源码放在底部，可供下载androidStudio3.0环境

public class ExchangeActivty extends Activity implements View.OnClickListener {
    private final String TAG = ExchangeActivty.class.getName();
    private ListView lv, lv2;
    TextView mtitle_txt;
    Button mSecondLevel_btn;
    Button mStair_btn;
    private static ExchangeListAdapter adapter;
    private ExchangeListAdapter2 adapter2;
    public static ArrayList<HashMap<String, Object>> sonData;
    public static List<String> datas2 = new ArrayList<String>();
    public static List<String> datas1 = new ArrayList<String>();
    List<String> strArray = new ArrayList<String>();
    int list1_grid;
    String list1_grid_content;

    public static HashMap<String, Object> hashMap = null;
    /**
     * 回传回来的列表位置
     */
    private int list1_positon;
    int index;
    List<String> test;
    public static String[] group = {"1", "2", "3", "4"};//listview假数据
    public static String[][] grid_item = {{"A1", "A2"}, {"A1", "A2", "A3"}, {"A1", "A2", "A3", "C4"}, {"crh"}};//基础假gridview数据
    List<List<String>> listdatas = new ArrayList<>();

    //遍历造假数据
    private void creatDatas() {
        for (String[] grops : grid_item) {
            List<String> group = new ArrayList<>();
            for (String ss : grops) {
                group.add(ss);
            }
            listdatas.add(group);
        }
    }
//这里用不上可以先忽略
    //适配其中数据传回
    @SuppressLint("HandlerLeak")
    private Handler handler = new Handler() {
        public void handleMessage(Message msg) {
            // 回传的是此item的bean,对当前bean中的数据能够进行操作,位置传过来之后还能将数据进行操作

            switch (msg.what) {
                case ExchangeListAdapter2.GET_POSITION_:
                    break;
                case GET_GRIDVIEW:
                    list1_positon = msg.getData().getInt(adapter.LIST_POSITION);
//                    list1_grid = msg.getData().getInt(adapter.GRID_POSITION);
                    list1_grid_content = msg.getData().getString(adapter.CONTENT);
                    index = msg.getData().getInt(adapter.INDEX);
//                    Log.e("LZ---第一个list", m);
                    Toast.makeText(ExchangeActivty.this, "已选中" + list1_positon + index + ":" + list1_grid + ":" + list1_grid_content, Toast.LENGTH_SHORT).show();

                    break;
                default:
                    break;
            }
        }
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.exchange);

        creatDatas();
        initView1();
        addData2();
        Adapter();

    }


    /**
     * 右侧list列表数据添加item数据
     */
    public void addData2() {
        if (datas2 != null)
            for (int i = 0; i < 10; i++) {
                datas2.add("CRH" + i + "A");// 添加数据
            }
//        adapter2.notifyDataSetChanged();
    }

    //控件初始化
    private void initView1() {
        lv = (ListView) findViewById(R.id.lv);
        mtitle_txt = (TextView) findViewById(R.id.title_txt);
        TextView title_Save = (TextView) findViewById(R.id.title_Save);
        title_Save.setText("保存");
        mtitle_txt.setText("自动派工结果");
        mSecondLevel_btn = (Button) findViewById(R.id.SecondLevel_btn);
        mSecondLevel_btn.setOnClickListener(this);
        mSecondLevel_btn.setBackgroundResource(R.color.bule_05);
        mStair_btn = (Button) findViewById(R.id.Stair_btn);
        mStair_btn.setOnClickListener(this);
        lv2 = (ListView) findViewById(R.id.lv2);
        lv2.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(final AdapterView<?> adapterView, View view, final int position, long l) {

            }
        });
        dataTest();
    }

    //左边list头部数据
    public void dataTest() {
        //position是第一选项中选择的栏目，进行判断
        test = new ArrayList<>();
        for (int k = 0; k < grid_item.length; k++) {
            test.add(group[k]);
            for (int g = 0; g < grid_item[k].length; g++) {
                if (k == 0) {
                    strArray.add(grid_item[k][g]);//添加listview 数据
                    Log.e("LZ--22222--item值-----", grid_item[k][g] + "");
                }
            }
        }
        adapter = new ExchangeListAdapter(strArray, ExchangeActivty.this, handler);//左边list适配器初始化
        adapter.setDatas(listdatas);
        lv.setAdapter(adapter);
    }
    //第二个适配器初始化
    public void Adapter() {
        adapter2 = new ExchangeListAdapter2(ExchangeActivty.this, datas2, handler);
        lv2.setAdapter(adapter2);

    }
    }

这里是外层listview的Adapter,

public class ExchangeListAdapter extends BaseAdapter {
    public static final int SET = 1;
    public static final int GET_GRIDVIEW = 1;
    public static final String LIST_POSITION = "LIST_POSITION";
    public static final String GRID_POSITION = "GRID_POSITION";
    public static final String CONTENT = "CONTENT";
    public static final String INDEX = "INDEX";
    private Handler handler;
    private Context mContext;
    private GridViewAdapter gridViewAdapter;
    private static String getlist1_grid_content;
    List<String> mgroup;


    public ExchangeListAdapter(List<String> mgroup, Context mContext, Handler handler) {
        super();
        this.mgroup = mgroup;
        this.mContext = mContext;
        this.handler = handler;

    }

    List<List<String>> listdatas = new ArrayList<>();

    //添加数据
    public void setDatas(List<List<String>> listdatas) {
        this.listdatas = listdatas;
    }

    @Override
    public int getCount() {
        return listdatas.size();
    }

    @Override
    public Object getItem(int position) {
        return listdatas.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder = null;
        if (convertView == null) {
            holder = new ViewHolder();
            convertView = LayoutInflater.from(this.mContext).inflate(R.layout.list_item_top, null, false);
            holder.gridView = (fixedGridView) convertView.findViewById(R.id.fixed_gridView);
            holder.exchage_group_txt = (TextView) convertView.findViewById(R.id.exchage_group_txt);
            convertView.setTag(holder);
        } else {
            holder = (ViewHolder) convertView.getTag();
        }
        try {
            holder.exchage_group_txt.setText(mgroup.get(position).toString() + "组");
        } catch (Exception e) {
        }
        
        if (holder.gridView != null) {
            holder.myPosition = position;
            gridViewAdapter = new GridViewAdapter(mContext, listdatas.get(position));
            holder.gridView.setAdapter(gridViewAdapter);
            setGridViewOnclik(holder.gridView, holder.myPosition);
        }
//
        LongItem(holder.gridView, holder.myPosition);//长按
        return convertView;
    }

    /**
     * 长按获取内容
     */
    public void LongItem(final GridView gridView, final int ListPosition) {
        gridView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
            @Override
            public boolean onItemLongClick(AdapterView<?> parent, View view, int gridposition, long id) {
                if (gridposition == parent.getChildCount() - 1) {
                    Toast.makeText(mContext, "不是目标！", Toast.LENGTH_SHORT).show();
                } else {
                    //传值到activty
                    Message msg = new Message();
                    msg.what = 1;
                    Bundle bundle = new Bundle();
                    bundle.putString("CONTENT", getlist1_grid_content);
                    bundle.putInt(INDEX, gridposition);
                    msg.setData(bundle);
                    handler.sendMessage(msg);
                    getlist1_grid_content = null;
//                    Toast.makeText(mContext, "位置" + mList.get(parentPosition).get(position).get("son").toString(), Toast.LENGTH_SHORT).show();
                }
                return false;
            }
        });
    }

    /**
     * 单击跳转
     */
    public void setGridViewOnclik(final GridView gridView, final int parentPosition) {
        if (gridViewAdapter != null) {
            gridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
                @Override
                public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                    if (position == parent.getChildCount() - 1) {//判断是否为最后一个item
                        addDatas(parentPosition, position);
                        Log.e("LZ--item", parentPosition + ":" + position);
                    } else {
                        Intent intent = new Intent(mContext, DispatchAdjustActivty.class);
//                        mContext.startActivity(intent);
                        // Toast.makeText(mContext, "位置" + mList.get(parentPosition).get(position).get("son").toString(), Toast.LENGTH_SHORT).show();
                    }
                }
            });
        }

    }
//添加数据
    public void addDatas(int parentPosition, int position) {

        for (int i = 0; i < listdatas.size(); i++) {
            if (i == parentPosition) {
                listdatas.get(parentPosition).add("123");//添加一项item
                Log.e("LZ--additem", parentPosition + "");
                notifyDataSetChanged();

            }
        }
    }
    
    private class ViewHolder {
        TextView exchage_group_txt;
        fixedGridView gridView;

        int myPosition;

    }

}

最后一个为gridview的Adapter，直接看代码说话

public class GridViewAdapter extends BaseAdapter {

    private Context mContext;

    private LayoutInflater inflater;
        private List<String> mList;
    public GridViewAdapter(Context mContext, List<String> mList) {
        this.mContext = mContext;
        this.mList = mList;
        inflater = LayoutInflater.from(mContext);
    }

    @Override
    public int getCount() {
        if (mList == null) {
            return 0;
        } else {
            return (mList.size() + 1);//添加最后一项可点击item添加数据
        }
    }

    @Override
    public Object getItem(int position) {
        if (mList == null)
            return null;
        return this.mList.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder viewHolder = null;
        if (convertView == null) {
            viewHolder = new ViewHolder();
            convertView = inflater.inflate(R.layout.gridview_item, null);
            viewHolder.mImageView = (ImageView) convertView.findViewById(R.id.del_itm);
            viewHolder.mTextView = (TextView) convertView.findViewById(R.id.textView_gridView);
            convertView.setTag(viewHolder);
        } else {
            viewHolder = (ViewHolder) convertView.getTag();
        }
        if (position < mList.size()) {
            try {
                viewHolder.mTextView.setText(mList.get(position).toString());
            } catch (Exception e) {

            }

        } else {
//            viewHolder.mTextView.setText("添加");
            viewHolder.mTextView.setBackgroundResource(R.drawable.add);//设置最后一项item的背景
            viewHolder.mImageView.setVisibility(View.GONE);
        }
        del(viewHolder.mImageView, position);//删除事件

        return convertView;
    }

    class ViewHolder {
        ImageView mImageView;
        TextView mTextView;
    }

    public void del(ImageView mImageView, final int positions) {
        mImageView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                mList.remove(positions);//删除item
                notifyDataSetChanged();
            }
        });
    }
}

主要的代码就这些了，

这是从项目中分离出来的demo，可能会有一些小bug,但不影响上文说的主要功能

下载源码