How to get a resource id with a known resource name?

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If I understood right, this is what you want

int drawableResourceId = this.getResources().getIdentifier("nameOfDrawable", "drawable", this.getPackageName());

Where “this” is an Activity, written just to clarify.

In case you want a String in strings.xml or an identifier of a UI element, substitute “drawable”

int resourceId = this.getResources().getIdentifier("nameOfResource", "id", this.getPackageName());

I warn you, this way of obtaining identifiers is really slow, use only where needed.

Link to official documentation: Resources.getIdentifier(String name, String defType, String defPackage)

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