No, you cannot. As Popeye said in a comment, the system controls that prompt, not your app – you simply request that the system display it for you. This is due to obvious security concerns.
For example, what if you initiated a $100 in-app purchase, but changed the prompt to say, "Place your thumb on the home button to start the game!" Clearly that would not go over well.
与恶龙缠斗过久,自身亦成为恶龙；凝视深渊过久,深渊将回以凝视…
