title: Download & Install apk from google play store without visiting play store
body: <p>I am having an ImageView,on click of that I want to download an apk from google play store ,without passing intent to google play store.You can see the code below which I am implementing right now but it is opening play store.I want to download whatsapp on click of the image. Please Guide.</p>
  
  <pre><code>protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_main);
          img=(ImageView)findViewById(R.id.img);
          img.setOnClickListener(new View.OnClickListener() {
              @Override
              public void onClick(View view) {
                  startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse
                          ("http://play.google.com/store/apps/details?id=" + "com.whatsapp")));
              }
  
          });
      }
  }
  </code></pre>