Android and getting a view with id cast as a string

by 
int resID = getResources().getIdentifier("button_%i",
    "id", getPackageName());
View addButton = findViewById(resID);

where %i is replaced by some valid index.

The getResources() method belongs to the Context class, so you can use that directly from an Activity. If you are not inside an activity, then use a context to access: (myCtxt.getResources()).

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