android 输入框自动匹配AutoCompleteTextView

android 输入框自动匹配-AutoCompleteTextView

封装自动适配的adapter可以监听，并且可以监听自动匹配输入框的输入事件。

package com;

import java.util.List;

import android.app.Activity;
import android.text.Editable;
import android.text.TextUtils;
import android.text.TextWatcher;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;

/**
 * @ClassName: AutoCompleteTextViewUtil
 * @author:hlu
 * @Date：2013-4-17
 * @version  V1.0.0
 * @Description: AutoCompleteTextView 实现的自动匹配的实现
 */
public class AutoCompleteTextViewUtil {
	
	private AutoCompleteTextView mACTV ;
	private ArrayAdapter<String> mAdapter  ;
	
	private ChangeAdapterDataListener mListener ;
	
	private List<String> mListObjects= null ;
	
	private boolean flagMListObjects = false  ;
	//是否执行查询，当输入框的字符长度大于2时，才会查询，查询了一次之后不会再查询。
	private boolean flagQuery = false ;
	
	public AutoCompleteTextViewUtil(AutoCompleteTextView actv){
		this.mACTV = actv ;
		mACTV.addTextChangedListener(watcher) ;
		mACTV.setOnFocusChangeListener(focusListener) ;
		mACTV.setOnItemClickListener(itemClickListener) ;
		mACTV.setOnClickListener(onClickL) ;
	}
	
	public void setAdapter(Activity activity,int resource,List<String> objects){
		this.mListObjects = objects ;
		flagMListObjects = true ;
		flagQuery = false ;
		mAdapter = new ArrayAdapter<String>(activity,android.R.layout.simple_dropdown_item_1line, mListObjects);
		mACTV.setAdapter(mAdapter) ;
	}
	
	public void setAdapter(Activity activity,List<String> objects){
		this.setAdapter(activity, android.R.layout.simple_dropdown_item_1line, objects);
	}
	
	public void setChangeAdapterDataListener(ChangeAdapterDataListener l){
		this.mListener = l ;
	}
	
	private void setDataList(String text){
		List<String> list = mListener.getDataList(text) ;
		if(list != null && list.size() > 0){
			mListObjects.addAll(list) ;
		}
	}
	
	private TextWatcher watcher = new TextWatcher() {

	    @Override
	    public void beforeTextChanged(CharSequence s, int start, int count,
		    int after) {
		
	    }

	    @Override
	    public void onTextChanged(CharSequence s, int start, int before,
		    int count) {
	    	String enteredText = s.toString() ;
	    	if(!TextUtils.isEmpty(enteredText) && enteredText.trim().length() > 0){
	    		//查询新匹配值
	    		if(!flagQuery){
		    		if(flagMListObjects){
		    			//更新List的数据。
		    			setDataList(enteredText.trim());
		    		}
		    		mAdapter.notifyDataSetChanged() ;
	    		}
	    		flagQuery = true ;
	    	}else{
	    		flagQuery = false ;
	    	}
	    }

	    @Override
	    public void afterTextChanged(Editable s) {
	    	
	    }
		
	} ;
	
	
	
	public interface ChangeAdapterDataListener{
		
		List<String> getDataList(String text) ;
		
		void checkInputTextExist(String text) ;
		
	}
	
	private View.OnFocusChangeListener focusListener = new View.OnFocusChangeListener() {
		
        @Override
        public void onFocusChange(View v, boolean hasFocus) {
        	mACTV.setFocusable(hasFocus) ;
        	if(!hasFocus){
        		mListener.checkInputTextExist(mACTV.getText().toString().trim()) ;
        	}
        }
    }; 

    private OnItemClickListener itemClickListener = new OnItemClickListener() {

		@Override
		public void onItemClick(AdapterView<?> parent, View view, int position,
				long id) {
			mListener.checkInputTextExist(mACTV.getText().toString().trim()) ;
		}
    	
	};
    
    private OnClickListener onClickL = new OnClickListener() {
		
		@Override
		public void onClick(View v) {
			mACTV.setFocusableInTouchMode(true) ;
			mACTV.requestFocus();
		}
	};
	
}





使用方法:
AutoCompleteTextViewUtil actvUtil = new AutoCompleteTextViewUtil(purchaseOrderSite) ;
		List<String> data = new ArrayList<String>() ;
		actvUtil.setAdapter(this, data) ;
		actvUtil.setChangeAdapterDataListener(new ChangeAdapterDataListener() {
	    
	    @Override
	    public List<String> getDataList() {
	    	List<String> data = new ArrayList<String>() ;
			data.add("qaz");
			data.add("qaza");
			data.add("qazab");
			data.add("qazabd");
			return data;
	    }
		});
效果图：








注意：AutoCompleteTextView.setOnItemSelectedListener()， 没有效果