网上找到的都是同ArrayAdapter一起使用的，有时候需要自定义风格，咋办？follow me！

看上图，实现了清空输入框内容和删除Item功能。

其实使用AutoCompleteTextView就得实现过滤器Filterable，你得告诉它怎么过滤。由于ArrayAdapter已经帮我们实现了Filterable接口，所以我们很容易忽略这个，以为AutoCompleteTextView用起来很简单。如果你使用的是BaseAdapter呢？当然，事实上也不难，只要让它也实现Filterable接口就可以了。

下面是源码：

实现自定义的Adapter

import java.util.ArrayList;import java.util.List;import qianlong.qlmobile.tablet.csco.R;import android.content.Context;import android.util.Log;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.view.View.OnClickListener;import android.widget.BaseAdapter;import android.widget.Filter;import android.widget.Filterable;import android.widget.ImageView;import android.widget.TextView;public class AutoCompleteAdapter extends BaseAdapter implements Filterable{    private Context context;    private ArrayFilter mFilter;    private ArrayList
        
          mOriginalValues;//所有的Item    private List
         
           mObjects;//过滤后的item    private final Object mLock = new Object();    private int maxMatch=10;//最多显示多少个选项,负数表示全部    public AutoCompleteAdapter(Context context,ArrayList
          
            mOriginalValues,int maxMatch){        this.context=context;        this.mOriginalValues=mOriginalValues;        this.maxMatch=maxMatch;    }        @Override    public Filter getFilter() {        // TODO Auto-generated method stub        if (mFilter == null) {              mFilter = new ArrayFilter();          }          return mFilter;    }        private class ArrayFilter extends Filter {        @Override        protected FilterResults performFiltering(CharSequence prefix) {            // TODO Auto-generated method stub            FilterResults results = new FilterResults();                //            if (mOriginalValues == null) {  //                synchronized (mLock) {  //                    mOriginalValues = new ArrayList
           
            (mObjects);//  //                }  //            }                        if (prefix == null || prefix.length() == 0) {                  synchronized (mLock) {                    Log.i("tag", "mOriginalValues.size="+mOriginalValues.size());                    ArrayList
            
              list = new ArrayList
             
              (mOriginalValues); results.values = list; results.count = list.size(); return results; } } else { String prefixString = prefix.toString().toLowerCase(); final int count = mOriginalValues.size(); final ArrayList
              
                newValues = new ArrayList
               
                (count); for (int i = 0; i < count; i++) { final String value = mOriginalValues.get(i); final String valueText = value.toLowerCase(); // if(valueText.contains(prefixString)){ //匹配所有// // } // First match against the whole, non-splitted value if (valueText.startsWith(prefixString)) { //源码 ,匹配开头 newValues.add(value); } // else { // final String[] words = valueText.split(" ");//分隔符匹配，效率低// final int wordCount = words.length; // // for (int k = 0; k < wordCount; k++) { // if (words[k].startsWith(prefixString)) { // newValues.add(value); // break; // } // } // } if(maxMatch>0){ //有数量限制 if(newValues.size()>maxMatch-1){ //不要太多 break; } } } results.values = newValues; results.count = newValues.size(); } return results; } @Override protected void publishResults(CharSequence constraint, FilterResults results) { // TODO Auto-generated method stub mObjects = (List
                
                 ) results.values; if (results.count > 0) { notifyDataSetChanged(); } else { notifyDataSetInvalidated(); } } } @Override public int getCount() { // TODO Auto-generated method stub return mObjects.size(); } @Override public Object getItem(int position) { // TODO Auto-generated method stub //此方法有误，尽量不要使用 return mObjects.get(position); } @Override public long getItemId(int position) { // TODO Auto-generated method stub return position; } @Override public View getView(final int position, View convertView, ViewGroup parent) { // TODO Auto-generated method stub ViewHolder holder = null; if(convertView==null){ holder=new ViewHolder(); LayoutInflater inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); convertView=inflater.inflate(R.layout.simple_list_item_for_autocomplete, null); holder.tv=(TextView)convertView.findViewById(R.id.simple_item_0); holder.iv=(ImageView)convertView.findViewById(R.id.simple_item_1); convertView.setTag(holder); }else{ holder = (ViewHolder) convertView.getTag(); } holder.tv.setText(mObjects.get(position)); holder.iv.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub String obj=mObjects.remove(position); mOriginalValues.remove(obj); notifyDataSetChanged(); } }); return convertView; } class ViewHolder { TextView tv; ImageView iv; } public ArrayList
                 
                   getAllItems(){ return mOriginalValues; }}
                 
                
               
              
             
            
           
          
         
        

 

import android.content.Context;import android.util.AttributeSet;import android.view.View;import android.widget.AutoCompleteTextView;import android.widget.ImageView;import android.widget.RelativeLayout;import android.widget.ImageView.ScaleType;public class AdvancedAutoCompleteTextView extends RelativeLayout{    private Context context;    private AutoCompleteTextView tv;    public AdvancedAutoCompleteTextView(Context context) {        super(context);        // TODO Auto-generated constructor stub        this.context=context;    }    public AdvancedAutoCompleteTextView(Context context, AttributeSet attrs) {        super(context, attrs);        // TODO Auto-generated constructor stub        this.context=context;    }    @Override    protected void onFinishInflate() {        super.onFinishInflate();        initViews();    }    private void initViews() {        RelativeLayout.LayoutParams params=new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.FILL_PARENT,RelativeLayout.LayoutParams.WRAP_CONTENT);        tv=new AutoCompleteTextView(context);        tv.setLayoutParams(params);        tv.setPadding(10, 0, 40, 0);//        tv.setSingleLine(true);                RelativeLayout.LayoutParams p=new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT,RelativeLayout.LayoutParams.WRAP_CONTENT);        p.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);        p.addRule(RelativeLayout.CENTER_VERTICAL);        p.rightMargin=10;        ImageView iv=new ImageView(context);        iv.setLayoutParams(p);        iv.setScaleType(ScaleType.FIT_CENTER);        iv.setImageResource(R.drawable.delete);        iv.setClickable(true);        iv.setOnClickListener(new View.OnClickListener() {                        @Override            public void onClick(View v) {                // TODO Auto-generated method stub                tv.setText("");            }        });                    this.addView(tv);        this.addView(iv);                    }        public void setAdapter(AutoCompleteAdapter adapter){        tv.setAdapter(adapter);    }        public void setThreshold(int threshold){        tv.setThreshold(threshold);    }        public AutoCompleteTextView getAutoCompleteTextView(){        return tv;    }}

 

 

simple_list_item_for_autocomplete.xml

 

 

使用，通常情况下都这样：

Java代码  

private AdvancedAutoCompleteTextView tv;	private AutoCompleteAdapter adapter;	private ArrayList
     
       mOriginalValues=new ArrayList
      
       ();    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);                mOriginalValues.add("1234561");        mOriginalValues.add("1234562");        mOriginalValues.add("2234563");        mOriginalValues.add("2234564");        mOriginalValues.add("3234561111");        mOriginalValues.add("32345622222");        mOriginalValues.add("323456333333");        mOriginalValues.add("3234564444");        mOriginalValues.add("3234565555");        mOriginalValues.add("32345666666");        mOriginalValues.add("32345777777");        		tv = (AdvancedAutoCompleteTextView) findViewById(R.id.tv);		tv.setThreshold(0);		adapter = new AutoCompleteAdapter(this, mOriginalValues, 10);		tv.setAdapter(adapter);    }
      
     

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