Android อยากทราบวิธีเพิ่ม button บน listview ที่รับข้อมูมาจาก mysql ครับ

public void SearchData()
    {
    	 // listView1
        ListView listView1 = (ListView)findViewById(R.id.listView4); 	
        
   	 	// editText1
        final EditText inputText = (EditText)findViewById(R.id.txtid3); 
        
        Intent intent = getIntent();
        final String Subject = intent.getStringExtra("Subjectname");
		final String Teacher = intent.getStringExtra("Username");
        
        final int num =1;
        
		String url = "http://jojoproject.orgfree.com/android/getListQuestion.php";
		
		// Paste Parameters
		List<NameValuePair> params = new ArrayList<NameValuePair>();
        params.add(new BasicNameValuePair("txtKeyword", inputText.getText().toString()));
        params.add(new BasicNameValuePair("txtSubject", Subject));
		params.add(new BasicNameValuePair("txtTeacher", Teacher));

		try {
			JSONArray data = new JSONArray(getJSONUrl(url,params));
			
			ArrayList<HashMap<String, String>> MyArrList = new ArrayList<HashMap<String, String>>();
			HashMap<String, String> map;
			
			for(int i = 0; i < data.length(); i++){
                JSONObject c = data.getJSONObject(i);
                
    			map = new HashMap<String, String>();
    			map.put("testname", c.getString("testname"));
    			
    			MyArrList.add(map);
    			
			}
			
			listView1.setAdapter(new ImageAdapter(this));
			
	        //SimpleAdapter sAdap;
	        //sAdap = new SimpleAdapter(Teacher_question_list.this, MyArrList, R.layout.activity_column2,
	                //new String[] {"testname"}, new int[] {R.id.ColName2});      
	        //lisView1.setAdapter(sAdap);
	        
	        //lisView1.setOnItemClickListener(new OnItemClickListener(){
	        	//public void onItemClick(AdapterView<?> parent, View view,
						//int position, long id){
	        		//String strTestname = MyArrList.get(position).get("testname")
							//.toString();
	        	//}
	        //});
	         
		} catch (JSONException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
    }
    
    public class ImageAdapter extends BaseAdapter 
    {
        private Context context;

        public ImageAdapter(Context c) 
        {
        	// TODO Auto-generated method stub
            context = c;
        }
 
        public int getCount() {
        	// TODO Auto-generated method stub
            return MyArrList.size();
        }
 
        public Object getItem(int position) {
        	// TODO Auto-generated method stub
            return position;
        }
 
        public long getItemId(int position) {
        	// TODO Auto-generated method stub
            return position;
        }
		public View getView(final int position, View convertView, ViewGroup parent) {
			// TODO Auto-generated method stub
			
			LayoutInflater inflater = (LayoutInflater) context
					.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
		 
			if (convertView == null) {
				convertView = inflater.inflate(R.layout.activity_column2, null); 
			}

			
			
		 
	        return convertView;
				
		}

    }