Tự Học Android

Vào file AndroidManifest.xml Thẻ  application  thêm thuộc tính  android :usesCleartextTraffic ="true"

https://riptutorial.com/ebook/android https://drive.google.com/file/d/1u9HaHj4xS9a7sO96sA5mZg3htmDPW-5R/view?usp=sharing