(Today, mobile development is in full swing. Android has a wide range of businesses and is currently the smartphone operating system with the highest business share. There are 110 high-quality Android development materials collected in this document. There are a lot of materials on the Internet, both good and bad. However, these materials are carefully collected, with a high download volume and many favorable comments. There are many attachments, so we can't share them one by one. We can only provide information addresses. I hope it will help you!)