(Apple i0s is a mobile development platform with a complete ecological environment in the world. At present, few talents master the core i0s development technology. According to the survey, 48% of i0s developers earn more than 8000 yuan a month, and the average salary of Beijing i0s development engineers is about 6000 yuan. The monthly salary of enterprise game development is more than 10000 yuan, accounting for 38%, slightly higher than that of application development. Students who are interested in i0s will become i0s developers and technical experts that enterprises really need after school; For i0s practitioners, they can improve their skills in a short time and master the methods to solve development difficulties.)