java - 我想在 ListView 中一行显示两个项目

Question

我想在文本字段的一行中显示 2 个项目，如何在 ListView 中的同一行中放置 2 个项目？

我想要显示这样的内容:

item 1 

item 2|item3

item 4

item 5 | item 6

我的代码:

public class MultipleItemsList extends ListActivity {

    private MyCustomAdapter mAdapter;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mAdapter = new MyCustomAdapter();
        int count=0;
        for (int i = 1; i < 50; i++) {

            if(count==0){
                mAdapter.addItem("item " + i);
                count++;
            }
            else if (count == 1) {
                mAdapter.addSeparatorItem("item " + i);
                count++;
            }
            else  if(count==2){
                mAdapter.addSeparatorItem1("item "+i);
                count=0;
            }
        }
        setListAdapter(mAdapter);
    }

    private class MyCustomAdapter extends BaseAdapter {

        private static final int TYPE_ITEM = 0;
        private static final int TYPE_SEPARATOR = 1;
        private static final int TYPE_SEPARATOR1=2;
        private static final int TYPE_MAX_COUNT = TYPE_SEPARATOR + 1;

        private ArrayList<String> mData = new ArrayList<String>();
        private LayoutInflater mInflater;

        private TreeSet<Integer> mSeparatorsSet = new TreeSet<Integer>();
        private TreeSet<Integer> mSeparatorSet1=new TreeSet<Integer>();
        public MyCustomAdapter() {
            mInflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        }

        public void addItem(final String item) {
            mData.add(item);
            notifyDataSetChanged();
        }

        public void addSeparatorItem(final String item) {
            mData.add(item);
            // save separator position
            mSeparatorsSet.add(mData.size() - 1);
            notifyDataSetChanged();
        }
        public void addSeparatorItem1(final String item){
            mData.add(item);
            mSeparatorSet1.add(mData.size()-1);
            notifyDataSetChanged();
        }

        @Override
        public int getItemViewType(int position) {
            if(mSeparatorsSet.contains(position)){
                return TYPE_SEPARATOR;
            }
            else if(mSeparatorSet1.contains(position)){
                return TYPE_SEPARATOR1;
            }
            else
                return TYPE_ITEM;
        }

        @Override
        public int getViewTypeCount() {
            return TYPE_MAX_COUNT;
        }

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

        @Override
        public String getItem(int position) {
            return mData.get(position);
        }

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

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            ViewHolder holder = null;
            int type = getItemViewType(position);
            System.out.println("getView " + position + " " + convertView + " type = " + type);
            if (convertView == null) {
                holder = new ViewHolder();
                switch (type) {
                    case TYPE_ITEM:
                        convertView = mInflater.inflate(R.layout.item1, null);
                        holder.textView = (TextView)convertView.findViewById(R.id.text);
                        break;
                    case TYPE_SEPARATOR:
                        convertView = mInflater.inflate(R.layout.item2, null);
                        holder.textView = (TextView)convertView.findViewById(R.id.textSeparator);
                        break;
                    case TYPE_SEPARATOR1:
                        convertView=mInflater.inflate(R.layout.item2,null);
                        holder.textView=(TextView)convertView.findViewById(R.id.textSeparator1);
                        break;
                }
                convertView.setTag(holder);
            } else {
                holder = (ViewHolder)convertView.getTag();
            }
            holder.textView.setText(mData.get(position));
            return convertView;
        }

    }

    public static class ViewHolder {
        public TextView textView;
    }
}

Answer 1

ListView并不真正支持这种操作。 ListView 中的项目必须垂直堆叠。 ListView 的内部实现将阻止任何说服它以不同方式布置项目的简单尝试。

查看兼容性库中的 GridLayout 控件。这涵盖了您想要相当轻松地完成的事情。