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Editorial Team
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Asked: 2026-06-03T21:09:01+00:00

So I’m in activity Home which has: setContentView(R.layout.home); Now, from Home activity, one can

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So I’m in activity Home which has:

setContentView(R.layout.home);

Now, from Home activity, one can go to Settings activity which has:

setContentView(R.layout.settings);

It has a couple of CheckBoxes and EditTexts.

Is it possible to edit the state of those checkboxes from the Home activity?

I already declared them in Home like this:

CheckBox checkBox1 = (CheckBox) findViewById(R.id.checkBox1);

Which finds the ID just fine but the application crashes on the line where I try to 

checkBox1.setChecked(true);

Is it not possible to access it from another activity??

Thank you

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1 Answer

  1. Editorial Team

    In general, an activity cannot directly modify view elements of another activity, since Android makes no guarantees regarding the lifecycle of each activity. Activity A may invoke Activity B, but if memory is running low while B is displayed, A may be destroyed.

    You will need to use intents to pass data from one activity to another.

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