新鮮出爐的demo   程式碼有點亂 講究著看吧。。。頭暈。。

先看 想要實現的功能效果 ：

第一步  資料初始化  

第二步監聽 輸入框裡面的 關鍵字   進行過濾   運用Filter 過濾

第三步 在自己的adapter類裡面實現自己的  Filterable 介面   重寫 getFilter()方法  返回自己的Filter物件

第四步  建立自己的Filter物件  並且在 performFiltering 方法裡面實現你的過濾規則   完成以後返回filterResults 物件   publishResults 方法會接受到 performFiltering 方法返回的物件  然後更新listView 即可。

第五步 看程式碼

這裡我使用了SearchView   用EdittextView 也可以。

先看MainActivity

public class MainActivity extends Activity {
	SearchView searchview;
	List<String> list = new ArrayList<String>();
	private SearchView.SearchAutoComplete edit;
	ListView listv;
	MyAdapter<String> adapter;

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

	private void initView() {
		// TODO Auto-generated method stub
		
		searchview = (SearchView) findViewById(R.id.searchview);
		
		listv = (ListView) findViewById(R.id.listv);
		
		adapter = new MyAdapter<String>(this, list);

		listv.setAdapter(adapter);		

		listv.setTextFilterEnabled(true);

		searchview.setQueryHint("請輸入你要查詢的關鍵字");
		searchview.setIconified(false);
		searchview.setIconifiedByDefault(false);

		searchview.setOnQueryTextListener(new OnQueryTextListener() {

			@Override
			public boolean onQueryTextSubmit(String arg0) {
				// TODO Auto-generated method stub
				return false;
			}

			@Override
			public boolean onQueryTextChange(String queryText) {
				if (TextUtils.isEmpty(queryText)) {
					adapter.getFilter().filter(null);
				} else {
					adapter.getFilter().filter(queryText);
				}
				return true;
			}
		});

	}

	private void initData() {
		// TODO Auto-generated method stub
		list.add("張三");
		list.add("李思");
		list.add("王麻子");
		list.add("張三");
		list.add("aaaa");
		list.add("cccc");
		list.add("dd");
		list.add("qwe三");
		list.add("2444");
		list.add("vvvv");
		list.add("55522");
		list.add("667732f");
	}
 

public class MyAdapter<T> extends BaseAdapter implements Filterable {

	private Context context;
	private ArrayList<T> mOriginalValues;
	private List<T> mObjects;

	private final Object mLock = new Object();

	private LayoutInflater mInflater;

	private String keyWrold = ""; // 關鍵字

	public MyAdapter(Context context, List<T> list) {
		this.context = context;
		this.mObjects = list;
		this.mInflater = (LayoutInflater) context
				.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
	}

	@Override
	public int getCount() {
		// TODO Auto-generated method stub
		if (mObjects == null || mObjects.size() == 0)
			return 0;
		return mObjects.size();
	}

	@Override
	public Object getItem(int position) {
		// TODO Auto-generated method stub
		return null;
	}

	@Override
	public long getItemId(int position) {
		// TODO Auto-generated method stub
		return position;
	}

	@Override
	public View getView(int position, View convertView, ViewGroup parent) {
		// TODO Auto-generated method stub
		ViewHolder viewHolder;
		if (convertView == null) {
			convertView = mInflater.inflate(R.layout.item, parent, false);
			viewHolder = new ViewHolder();
			viewHolder.txtv = (TextView) convertView.findViewById(R.id.txtv);
			convertView.setTag(viewHolder);
		} else {
			viewHolder = (ViewHolder) convertView.getTag();
		}
		String str = mObjects.get(position).toString().toLowerCase();

		if (!keyWrold.equals("")) {
			String patten = "" + keyWrold;
			Pattern p = Pattern.compile(patten);
			Matcher m = p.matcher(str);
			SpannableString spannableString = new SpannableString(str);
			while (m.find()) {
				if (str.contains(m.group())) {
					spannableString.setSpan(
							new ForegroundColorSpan(0xffec8b44), m.start(),
							m.end(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
				}
			}
			viewHolder.txtv.setText(spannableString);
		} else {
			SpannableString spannableString = new SpannableString(str);
			spannableString.setSpan(new ForegroundColorSpan(Color.BLACK), 0,
					str.length() - 1, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
			viewHolder.txtv.setText(mObjects.get(position).toString());
		}
		return convertView;
	}

	class ViewHolder {
		TextView txtv;
	}

	@Override
	public Filter getFilter() {
		// TODO Auto-generated method stub
		return filter;
	}

	Filter filter = new Filter() {
		@Override
		protected void publishResults(CharSequence constraint,
				FilterResults results) {
			mObjects = (List<T>) results.values;
			if (results.count > 0) {
				notifyDataSetChanged();
			} else {
				notifyDataSetInvalidated();
			}
		}

		@Override
		protected FilterResults performFiltering(CharSequence prefix) {
			// TODO Auto-generated method stub
			FilterResults filterResults = new FilterResults();

			if (mOriginalValues == null) {
				synchronized (mLock) {
					mOriginalValues = new ArrayList<T>(mObjects);
				}
			}

			if (prefix == null || prefix.length() == 0) {
				ArrayList<T> list;
				synchronized (mLock) {
					list = new ArrayList<T>(mOriginalValues);
				}
				filterResults.values = list;
				filterResults.count = list.size();
				keyWrold = "";
			} else {
				String prefixString = prefix.toString().toLowerCase();
				ArrayList<T> values;
				synchronized (mLock) {
					values = new ArrayList<T>(mOriginalValues);
				}

				final int count = values.size();
				final ArrayList<T> newValues = new ArrayList<T>();

				for (int i = 0; i < count; i++) {
					final T value = values.get(i);
					final String valueText = value.toString().toLowerCase();
					// First match against the whole, non-splitted value
					if (valueText.contains(prefixString)) {
						newValues.add(value);
						keyWrold = prefixString;
					}
				}

				filterResults.values = newValues;
				filterResults.count = newValues.size();
			}

			return filterResults;
		}

	};

}
 

湊合著看吧，有問題還望指出。