highlight UIButton - without multiple images
<p>I have been gone through following link
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<a href="http://stackoverflow.com/questions/351919/how-to-programatically-highlight-a-uibutton">http://stackoverflow.com/questions/351919/how-to-programatically-highlight-a-uibutton</a></p>

<p>in first two lines of their code, i found</p>

<p>UIImage* normalImage = [<em>infoButton imageForState:UIControlStateNormal];<br>
UIImage</em> highlighted = [_infoButton imageForState:UIControlStateHighlighted];</p>

<p>It seems that they have used multiple images, for their infoButton.
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What i need is explained below,</p>

<p>I have an application with many buttons,</p>

<p>Every button has different images &amp; that makes my application very huge in size.</p>

<p>If I make different images for normalState &amp; highlightedState my App size goes to double.</p>

<p>So, i need some ideas like blur, or size down of button or image, or alpha down, for my button image,</p>

<p>i don't know the code &amp; that's my Question.</p>

<p>so, how to animate/highlight the button on tapped in iPhone?</p>

<p>Thanks in advance.</p>
