在Kotlin 1.4.20-M2中，JetBrains弃用了Kotlin Android扩展编译器插件.

In Kotlin 1.4.20-M2 JetBrains deprecated Kotlin Android Extensions compiler plugin.

kotlinx.android.synthetic不再是推荐的做法.删除支持显式的findViewById

kotlinx.android.synthetic is no longer a recommended practice. Removing in favour of explicit findViewById

非常不幸的消息:(，我讨厌viewBinding

Very sad news :(, i hate viewBinding