构建一段时间，导入大量数据

I am creating a test application whose purpose is to import a large amount of text messages into the sms inbox. I have a few thousand messages in two columns "address" and "body". I can have them in a csv, sqlite, or string array format. I'm unsure how to approach this problem so as to make this while loop efficient and what way I might want to parse the data. I am creating a test application whose purpose