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Editorial Team
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Asked: 2026-06-10T06:14:31+00:00

I’m making my first app and I’m quite happy with it, yet I need

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I’m making my first app and I’m quite happy with it, yet I need help with one thing: when setting the image for an ImageView, should I do this?

if (blah > 0 && blah < 10) {
    Drawable question_night = res.getDrawable(R.drawable.wt_you_should_wear_2);
    questionImg.setImageDrawable(question_night);
}

Or this?

if (blah > 0 && blah < 10){
    questionImg.setImageDrawable(res.getDrawable(R.drawable.wt_you_should_wear_2));
}

I need to know which is better, regarding how much VM heap it uses, whether it affects the speed of the app, if it has problems (leaks e.t.c.).

Thanks in advance.

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1 Answer

  1. Editorial Team

    It will make no difference in performance or memory use. You may well find the first option easier to read and debug though.

    (On the other hand, I’d name the variable somewhat differently. It’s not at all clear why question_night would be a reference to a Drawable, and the conventional name would be questionNight anyway.)

    EDIT: This answer only compares the two options given, from a Java language perspective. siliconeagle’s answer of passing the resource directly rather than going via a Drawable certainly sounds like a cleaner approach to me.

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