How do I programmatically change the ImageButton src target when a condition is met?

Question

I have a school project where I am trying to get a flashlight app going. For the on/off ImageButton, I want to have 4 custom images.

If flashlight is off: -turn_on.png (

Answer 1

When setting the image using the following attribute:

android:src="@drawable/on_selector"

You will need to use the following to change the image dynamically:

ImageButton myButton = (ImageButton) findViewById(R.id.my_button);
myButton.setImageResource(R.drawable.my_button_image);

Answer 2

Is it a requirement that it has to be imageResource? You can try using backgroundResource instead.

ImageButton flashButtonOn = (ImageButton) findViewById(R.id.flashButtonOn);
flashButtonOn.setBackgroundResource(R.drawable.on_selector);

Or try

flashButtonOn.setImageResource(R.drawable.replacementGraphic);

Answer 3

It should be "setImageResource", "setBackgroundResource" changes the background, not the src. btn_MyButton.setImageResource(R.drawable.button_bg_selector_collapsed);