需要把ExpandableListView的适配器(继承自BaseExpandableListAdapter)同时绑定到AutoCompleteTextView，实现搜索过滤功能。实现了接口Filterable，以为成功在即，既然编译抛错误

The generic method setAdapter(T) of type AutoCompleteTextView is not applicable for the arguments (MyExpandableListAdapter). The inferred type MyExpandableListAdapter is not a valid substitute for the bounded parameter <T extends ListAdapter & Filterable>	

 MyExpandableListAdapter未实现ListAdapter,跟进BaseExpandableListAdapter最终继承的接口ExpandableListAdapter既然不是ListAdapter的子类!ExpandableListView继承自ListView google既然让它实现不同的适配器，哦！狗屎！

    继续看看setAdapter有两个重载

 public void setAdapter(ExpandableListAdapter adapter)
 public void setAdapter(ListAdapter adapter)

如果调用

 public void setAdapter(ListAdapter adapter)

直接就抛异常。看另外一个函数的实现

    public void setAdapter(ExpandableListAdapter adapter) {
        // Set member variable
        mAdapter = adapter;
        
        if (adapter != null) {
            // Create the connector
            mConnector = new ExpandableListConnector(adapter);
        } else {
            mConnector = null;
        }
        
        // Link the ListView (superclass) to the expandable list data through the connector
        super.setAdapter(mConnector);
    }

  看，google既然在ExpandableListAdapter和ListAdapter直接做一个链接器来适配ListView。

  ExpandableListView的这种实现方法，虽然可重用listview，但函数setAdapter签名和父类ListView不统一，无疑给调用者添加陷阱和增加复杂度。

  回到上面的问题：如果需要MyExpandableListAdapter同时能够被AutoCompleteTextView做adapter,只好乖乖实现ListAdapter,所以要实现ListAdapter、ExpandableListAdapter两个接口。这么来编译还是不能通过。

For ExpandableListView, use setAdapter(ExpandableListAdapter) instead of " +
                "setAdapter(ListAdapter)

 聪明的java编译器把MyExpandableListAdapter认为是ListAdapter的子类了。怎么办？很简单！一个小技巧让编译器更加聪明点

expandableListView.setAdapter((ExpandableListAdapter)MyExpandableListAdapter);

 至此MyExpandableListAdapter就不仅可以被ExpandableListView使用而且可以被AutoCompleteTextView使用了。

 希望此文对您有用！

http://blog.csdn.net/xiaonamylove/article/details/3939965

CharSequence[] items = {"相册", "相机"};    
   new AlertDialog.Builder(this)  
    .setTitle("选择图片来源")  
    .setItems(items, new OnClickListener() {  
        public void onClick(DialogInterface dialog, int which) {  
            if( which == SELECT_PICTURE ){  
                Intent intent = new Intent(Intent.ACTION_GET_CONTENT);  
                intent.addCategory(Intent.CATEGORY_OPENABLE);  
                intent.setType("image/*");  
                startActivityForResult(Intent.createChooser(intent, "选择图片"), SELECT_PICTURE);   
            }else{  
                Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);    
                startActivityForResult(intent, SELECT_CAMER);    
            }  
        }  
    })  
    .create().show();   

protected void onActivityResult(int requestCode, int resultCode, Intent data) {  
    super.onActivityResult(requestCode, resultCode, data);  
    if(resultCode == RESULT_OK){  
        //选择图片  
        Uri uri = data.getData();   
        ContentResolver cr = this.getContentResolver();   
        try {  
            if(bmp != null)//如果不释放的话，不断取图片，将会内存不够  
                bmp.recycle();  
            bmp = BitmapFactory.decodeStream(cr.openInputStream(uri));  
        } catch (FileNotFoundException e) {  
            // TODO Auto-generated catch block  
            e.printStackTrace();  
        }  
        System.out.println("the bmp toString: " + bmp);  
        imageSV.setBmp(bmp);  
    }else{  
        Toast.makeText(SetImageActivity.this, "请重新选择图片", Toast.LENGTH_SHORT).show();  
    }  

protected void onActivityResult(int requestCode, int resultCode, Intent data) {  
    super.onActivityResult(requestCode, resultCode, data);  
    if(resultCode == RESULT_OK){  
        Uri uri = data.getData();   
        String [] proj={MediaStore.Images.Media.DATA};  
        Cursor cursor = managedQuery( uri,  
                proj,                 // Which columns to return  
                null,       // WHERE clause; which rows to return (all rows)  
                null,       // WHERE clause selection arguments (none)  
                null);                 // Order-by clause (ascending by name)  
          
        int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);  
        cursor.moveToFirst();  
          
        String path = cursor.getString(column_index);  
        bmp = BitmapFactory.decodeFile(path);  
        System.out.println("the path is :" + path);  
    }else{  
        Toast.makeText(SetImageActivity.this, "请重新选择图片", Toast.LENGTH_SHORT).show();  
    }  
}  
          
}