(The first two editions of this book do not cover language. The default reader is the foundation of Java language. The third edition gives a very comprehensive explanation of the kotlin language. Readers do not need to have any basic knowledge of the kotlin language.
In addition, the first edition of this book is based on Android 4 x. The second version is based on Android 7.0, and the third version is based on Android 10.0. It includes many knowledge points in the new system, including the notification channel and application icon adaptation introduced in Android 8.0 system, and the plaintext network transmission restriction adaptation introduced in Android 9.0 System,
Android 10.0 system introduces dark theme mode
In addition, the third edition also adds two practical projects and explanations of new knowledge points such as retrofit, Xiecheng, jetpack and MVVM. The content will be richer than before.)
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