title: How to reduce android activity and app size?
body: <p>I'm new at android devolpment, so I am developing an alphabet app for an old language, the app would look like this </p>
  
  <p>first page has a picture and two buttons </p>
  
  <p>first button links to a page with text </p>
  
  <p>second button links to a page with 24 images (alphabets), if you click on one of the image (alphabet) then you move on to a page with picture (alphabet) and below the picture there is a button to listen to the pronunciation of the letter</p>
  
  <p><img src="https://i.stack.imgur.com/zwTpL.png" alt="enter image description here"></p>
  
  <p>in the end the app will contain <strong>50</strong> <em>images</em>, <strong>24</strong> <em>audio</em> files and at least <strong>30</strong> <em>activity</em></p>
  
  <p>and the app size will be too large</p>
  
  <p><strong>The question is can I use something else instead of activity?</strong> or should I use use activity then reduce the app size? <strong>ProGuard</strong>??</p>
  
  <p>I am developing at android <strong>API 21</strong> and the min Api is <strong>API 8</strong> </p>