checkbox - how to get the sum of selected checkboxes in android? -


i'am newer. problem @ java.

in xml, if have 2 checkboxes, o book o pencil total : . . .

i want sum of selected checkboxes. if book=10 , pencil=5. how?

give each of checkboxes unique id in xml (android:id="@+id/book", android:id="@+id/pencil") , in code check if checked so:

int sum = 0; if (((checkbox)findviewbyid(r.id.book)).ischecked()) sum += 10; if (((checkbox)findviewbyid(r.id.pencil)).ischecked()) sum += 5;

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