Android中AutoCompleteTextView与TextWatcher结合小实例

package com.conowen.test; 
 
import android.app.Activity; 
import android.os.Bundle; 
import android.text.Editable; 
import android.text.TextWatcher; 
import android.widget.AutoCompleteTextView; 
 
public class DrComActivity extends Activity { 
 
  /** Called when the activity is first created. */ 
  @Override 
  public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 
 
     
    AutoCompleteTextView autoinput =(AutoCompleteTextView) findViewById(R.id.autoinput); 
 
    autoinput.setThreshold(1);// 输入一个字母就开始自动提示 
 
 
  autoinput.addTextChangedListener(new TextWatcher() { 
     
    @Override 
    public void onTextChanged(CharSequence s, int start, int before, int count) { 
      // TODO Auto-generated method stub 
      //s是输入框正在输的字符串，随着不断的输入，s的值也会不停地改变 
 
         
         String str = s.toString(); 
         
        String[] temp = getInputAdapter(getInputWorldOrder(str)); 
         //此处代码省略，自己通过查询数据库或者其他方法，动态地获取相应的字符串数组 
         //如做一个字典时，不可能预先把所有单词做成一个adapter，应该根据输入的字符， 
        //动态地查询一定数量的相对应的单词，然后再构建adapter 
         ArrayAdapter<String> adapter = new ArrayAdapter<String>(ct, 
         android.R.layout.simple_dropdown_item_1line, temp); 
 
    
         autoinput.setAdapter(adapter) 
 
         //正在输入时，构建adapter，然后把adapter绑定在AutoCompleteTextView 上面 
 
    @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 
 
    } 
 
  } 
  } 
}