How to open Pdf files

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(SEND PDF) I need to send a generated pdf file to my "/ storage / emulated / 0 /" directory, by whatsapp, email, etc

Good Morning Can someone help me? I need to send a generated pdf file to my “/ storage / emulated / 0 /” directory, by whatsapp, email, etc. I used ActivityStarter as SEND, but in the kodular splitting it opens the normal tab to send, but when I install the apk, it does not open this tab to send the generated pdf.