Android为ListView的Item设置不同的布局

Adapter的getViewTypeCount和getItemViewType
Android为ListView的Item设置不同的布局

你需要做这些:

1 getViewTypeCount()和getItemViewType(int position)方法.
1.1重(@Override)写 getViewTypeCount() – 返回你有多少个不同的布局
1.2重(@Override)写 getViewTypeCount(int position)中需要依据position的不同，返回不同的Type.
2 在getView()方法中针对不同的Type为Item设置布局
2.1得到当前位置(position)时的Type即代码:currentType= getItemViewType(position);
2.2依据Type的不同为Item设置布局，在getView中创建正确的convertView

以下是代码：

public class MultipleItemsList extends ListActivity {

private MyCustomAdapter mAdapter;@Overridepublic void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    mAdapter = new MyCustomAdapter();    for (int i = 1; i < 50; i++) {        mAdapter.addItem("item " + i);        if (i % 4 == 0) {            mAdapter.addSeparatorItem("separator " + i);        }    }    setListAdapter(mAdapter);}private class MyCustomAdapter extends BaseAdapter {    private static final int TYPE_ITEM = 0;    private static final int TYPE_SEPARATOR = 1;     private LayoutInflater mInflater;     private ArrayList mData = new ArrayList();     private TreeSet mSeparatorsSet = new TreeSet();    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);        mSeparatorsSet.add(mData.size() - 1);        notifyDataSetChanged();    }    @Override    public int getItemViewType(int position) {        return mSeparatorsSet.contains(position) ? TYPE_SEPARATOR : TYPE_ITEM;    }    @Override    public int getViewTypeCount() {        return 2;    }    @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);        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;            }            convertView.setTag(holder);        } else {            holder = (ViewHolder)convertView.getTag();        }        holder.textView.setText(mData.get(position));        return convertView;    }}public static class ViewHolder {    public TextView textView;}

}

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