title: How to use intent in baseadapter class
body: <p>Hi I have a base adapter class for custom listview. my listview has a button. when i press that button, I have to redirect the control to another activity. When I use Intent to redirect, It shows error during runtime. Here is my code,</p>
  
  <pre><code>public View getView(final int position, View convertView, ViewGroup parent) 
  {
  
      convertView = mInflater.inflate(R.layout.listview_elements, null);
  
      TextView textview1 = (TextView) convertView.findViewById(R.id.TextView01);
      TextView textview2 = (TextView) convertView.findViewById(R.id.TextView02);
      TextView textview3 = (TextView) convertView.findViewById(R.id.TextView03);
      Button buy=(Button)convertView.findViewById(R.id.buy_song_button);
      buy.setOnClickListener(new OnClickListener() {
  
          public void onClick(View v) {
  
          Intent intent=new Intent(con,MainActivity.class);
          con.startActivity(intent);
  
  
          }
      }); }
  </code></pre>
  
  <p>How to redirect to another activity from my base adapter class?</p>