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      }    }   } }