1.配置main.xml中自动提示控件：

 

 

注：android:dropDownVerticalOffset="10dip"是可以将提示的信息与边框开一段距离的属性，通常都会用的到

 

2.建立搜索栏的布局.xml：

 

 

注： android:visibility="gone"这个是加入输入英文字母有中文提示的关键性代码

 

 

3.定义2个数组并在程序的开始给数组赋值：

// 所有搜索的信息 public static ArrayList
     
      
       > list_searchAll = new ArrayList
       
        
         >(); // 一些搜索的信息 public static ArrayList
         
          
           > list_searchSome = new ArrayList
           
            
             >(); private void addAllSearch(String input, String output) { HashMap
             
               item; item = new HashMap
              
               (); item.put("brandSearchText", input); item.put("brandName", output); list_searchAll.add(item); } private void addAllSearchItems() { addAllSearch("XBH xuebuhui xbh", "学不会"); addAllSearch("YXJ yixiangji yxj", "异想记"); addAllSearch("XWZ xiaowangzi wangzi", "小王子的漂流瓶"); addAllSearch("XYGZJ xiayige xygzj", "下一个自己"); addAllSearch("NYFZ nuoyafanzhou nyfz", "诺亚方舟"); addAllSearch("XT xintiao xt", "心跳"); addAllSearch("QS qinshang qs", "琴伤"); addAllSearch("AQSFYR aiqinshifou aqsf", "爱情是否依然"); addAllSearch("NZFRSM nizaifanrao nzfrsm", "你在烦扰什么"); addAllSearch("WMHGHD womenghuigenghaode wmhgh", "我们会更好的"); } private void addSomeSearch(String input, String output) { HashMap
               
                 item; item = new HashMap
                
                 (); item.put("brandSearchText", input); item.put("brandName", output); list_searchSome.add(item); } private void addSomeSearchItems() { // A addSomeSearch("AQMM aiqingmaima", "爱情买卖"); addSomeSearch("AWNJBBW aiwonijiubbw", "爱我你就抱抱我"); addSomeSearch("ABZJFFS aibuzaijiuffs", "爱不在就放放手"); // B addSomeSearch("BCYS banchengyansha", "半城烟沙"); addSomeSearch("BFSDLA bufengshoudelianai", "不分手的恋爱"); addSomeSearch("BYGSMM buyaogaoshumama", "不要告诉妈妈"); }
                
               
              
             
            
           
          
         
        
       
      
     

 

 

 

4.得到控件id，创建SimpleAdapter适配器：

private AutoCompleteTextView autotv_search;private SimpleAdapter mAdapter; autotv_search = (AutoCompleteTextView) findViewById(R.id.autotv_search);

 

注：适配器的实例化可以在监听中

 

5.设置AutoCompleteTextView的监听

private void autoSearchListen() {  autotv_search.setOnKeyListener(new View.OnKeyListener()  {   // 添加软键盘事件（让软键盘有一个搜索的图标）   @Override   public boolean onKey(View v, int keyCode, KeyEvent event)   {    // TODO Auto-generated method stub    if (keyCode == KeyEvent.KEYCODE_ENTER)    {     if (event.getAction() == KeyEvent.ACTION_UP)     {      InputMethodManager imm = (InputMethodManager) v        .getContext().getSystemService(          Context.INPUT_METHOD_SERVICE);      if (imm.isActive())      {       imm.hideSoftInputFromWindow(v         .getApplicationWindowToken(), 0);      }      return true;     }    }    return false;   }  });注：if (keyCode == KeyEvent.KEYCODE_ENTER)    {     if (event.getAction() == KeyEvent.ACTION_UP)     {   是当回车键起来的时候才触发不然会被调用2次，一次按下一次弹起    autotv_search.setOnClickListener(new OnClickListener()  {   @Override   public void onClick(View v)   {    // TODO Auto-generated method stub    if (autotv_search.getText().toString().equals(""))    {     mAdapter = new SimpleAdapter(SearchActivity.this,       HomeActivity.list_searchAll, R.layout.searchlist, new String[] {         "brandSearchText", "brandName" },       new int[] { R.id.tv_searchText, R.id.tv_brandName });     autotv_search.setAdapter(mAdapter);     autotv_search.showDropDown();    }   }  }); 注：点击搜索框触发，记得参数都要一一对应，你懂的...autotv_search.showDropDown();手动弹出提示    autotv_search.setOnFocusChangeListener(new OnFocusChangeListener()  {   @Override   public void onFocusChange(View v, boolean hasFocus)   {    if (hasFocus & autotv_search.getText().toString().equals(""))    {     mAdapter = new SimpleAdapter(SearchActivity.this,       HomeActivity.list_searchAll, R.layout.searchlist, new String[] {         "brandSearchText", "brandName" },       new int[] { R.id.tv_searchText, R.id.tv_brandName });     autotv_search.setAdapter(mAdapter);     autotv_search.showDropDown();    }   }  });    // 点击条目的监听  autotv_search.setOnItemClickListener(new OnItemClickListener()  {   @Override   public void onItemClick(AdapterView
      parent, View view,     int position, long id)   {    TextView tv =  (TextView) view.findViewById(R.id.tv_brandName);    autotv_search.setText(tv.getText().toString());    autotv_search.setSelection(autotv_search.getText().toString().length());   }  });  //TextWatcher 是本应用的关键地方...这里感谢云童鞋给的提示，当字符产生变换的时候就调用   TextWatcher tw = new TextWatcher()  {      @Override   public void onTextChanged(CharSequence s, int start, int before, int count)   {    // TODO Auto-generated method stub    if (autotv_search.getText().toString().equals(""))    {     mAdapter = new SimpleAdapter(SearchActivity.this,       HomeActivity.list_searchAll, R.layout.searchlist, new String[] {         "brandSearchText", "brandName" },       new int[] { R.id.tv_searchText, R.id.tv_brandName });     autotv_search.setAdapter(mAdapter);     autotv_search.showDropDown();    } else if (autotv_search.getText().toString().length() < 3)    {     mAdapter = new SimpleAdapter(SearchActivity.this,       HomeActivity.list_searchSome, R.layout.searchlist, new String[] {         "brandSearchText", "brandName" },       new int[] { R.id.tv_searchText, R.id.tv_brandName });     autotv_search.setAdapter(mAdapter);     // mAdapter.notifyDataSetChanged();    }   }      @Override   public void beforeTextChanged(CharSequence s, int start, int count,     int after)   {    // TODO Auto-generated method stub       }      @Override   public void afterTextChanged(Editable s)   {    // TODO Auto-generated method stub    if (autotv_search.getText().toString().equals(""))    {     mAdapter = new SimpleAdapter(SearchActivity.this,       HomeActivity.list_searchAll, R.layout.searchlist, new String[] {         "brandSearchText", "brandName" },       new int[] { R.id.tv_searchText, R.id.tv_brandName });     autotv_search.setAdapter(mAdapter);     autotv_search.showDropDown();    }   }  };  // 添加文字改变的监听  autotv_search.addTextChangedListener(tw);   }

 

结束语：这样一直改变适配器的方法不知道会不会在性能上产生一定的问题...在真机上测试还是很快速的，程序还有很多要优化的地方，如果有更好的方法的还望指点呀...