listview+EditText 实现过滤搜索listview中的内容

来源：互联网发布：access2007数据库引擎编辑：程序博客网时间：2024/05/01 01:16

废话不说直接上代码

public class ListViewAdapter extends BaseAdapter {//集合的总数据private List<People> data;private LayoutInflater inflater;//过滤的数据private List<People> filterList;//把这个数据给adapter    private List<People> myPeopleList; public ListViewAdapter(Context context, List<People> data){this.inflater=LayoutInflater.from(context);this.data=data;//这个时候把我们的一些中间变量给初始化一下  filterList = new ArrayList<People>();          myPeopleList = new ArrayList<People>();          //把我们传递过来的数据,弄到这个集合里面.保存原始集合的完整性          myPeopleList.addAll(data); }@Overridepublic int getCount() {// TODO Auto-generated method stubreturn data.size();}@Overridepublic Object getItem(int position) {// TODO Auto-generated method stubreturn position;}@Overridepublic long getItemId(int position) {// TODO Auto-generated method stubreturn position;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {// TODO Auto-generated method stubViewHolder holder;int type=getItemViewType(position);if(convertView==null){holder=new ViewHolder();convertView=inflater.inflate(R.layout.item1, null);holder.tv=(TextView) convertView.findViewById(R.id.tv1);convertView.setTag(holder);}else{holder=(ViewHolder) convertView.getTag();}return convertView;}   class ViewHolder{   TextView tv;   }   //定义自己的过滤器   private MyFilter myfilter;   public MyFilter getFilter(){   if(myfilter==null){   myfilter=new MyFilter();      }   return myfilter;   }class MyFilter extends Filter{@Overrideprotected FilterResults performFiltering(CharSequence charSequence) {// TODO Auto-generated method stubFilterResults results=new FilterResults();if(TextUtils.isEmpty(charSequence)){filterList.clear();results.values=data;return results;}else{filterList.clear();for(Iterator<People> iterator=data.iterator();iterator.hasNext();){ People name = iterator.next();                      if (name.getName().contains(charSequence)) {                      filterList.add(name);                     }}  results.values = filterList;                  return results;  }}//筛选结果@SuppressWarnings("unchecked")@Overrideprotected void publishResults(CharSequence arg0, FilterResults arg1) {// TODO Auto-generated method stubmyPeopleList=(List<People>) arg1.values; if (arg1.count > 0) {                  notifyDataSetChanged();              } else {                  notifyDataSetInvalidated();              }          }  }}

下面是Main_Activity

public class MainActivity extends Activity {private ListView lv;private ListViewAdapter adapter;private List<People> list;private EditText ed;@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);requestWindowFeature(Window.FEATURE_NO_TITLE);setContentView(R.layout.main_activity);lv=(ListView) findViewById(R.id.lv);ed=(EditText) findViewById(R.id.et);//mData=getData();  list = new ArrayList<People>();          for(int i=1;i<20;i++) {              People tPeople = new People();              if(i==18||i==3||i==2){            tPeople.setName("小明"+i);            }else{            tPeople.setName("小刚"+i);            }            list.add(tPeople);            }                                     adapter=new ListViewAdapter(this, list);lv.setAdapter(adapter);ed.addTextChangedListener(new TextWatcher() {@Override//当editText发生变化的时候public void onTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {// TODO Auto-generated method stubadapter.getFilter().filter(arg0);}//这两个方法在这里没有什么用@Overridepublic void beforeTextChanged(CharSequence arg0, int arg1, int arg2,int arg3) {// TODO Auto-generated method stub}@Overridepublic void afterTextChanged(Editable arg0) {// TODO Auto-generated method stub}});}}

哈哈简单吧这是部分代码。。

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