How to avoid the mass in my controls that i added to the layout?
<p>I using the 'LinearLayout' and i add 4 controls. </p>

<pre><code>       1. textView_1   - that contain the title of the application
       2. textView_2   - that contain some dynamic text
       3. Button       - that contain the title of the application
       4. ImageView    - that contain the application logo ( image ) 
</code></pre>

<p>My Questions are </p>

<p>How can i keep the relation between all of those controls ? 
I want to make the first control to be 10% of the screen, the second to be 60%, the third to be 20% and the last to be 10%. </p>

<p>I also want to keep the font of the textview to be dynamic - so if the application will run on big screen ( tablet ) then the font will be grow according to the screen size. </p>
