Can I pre-store the picture resources in space and download the picture resources through the client?

  android, question
I'm developing an app that memorizes words. Each word will correspond to a picture resource (named after the word). I plan to store all picture resources in advance in the space inside, and then access and download them on the client (accessed by the resource name). Then the problem arises: store the pictures voluntarily in the space in advance, and then directly access the corresponding resources by the resource name on the client. Is this feasible?
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There is a free API on the internet, just call it directly!