title: Install file apk inside apk application
body: <p>I use Eclipse to create android application (1). Now, I want this application can open and install file apk (2) inside application (1).</p>
  
  <p>file apk (2) inside android project example:
  Android project/res/drawable/file.apk </p>
  
  <p>When open android application (1) esle have button.
  When click button esle install file.apk</p>