优化1

app/src/main/java/com/example/myapplication/AppContext.kt

@@ -0,0 +1,12 @@
+package com.example.myapplication
+
+import android.content.Context
+
+object AppContext {
+    lateinit var context: Context
+        private set
+
+    fun init(ctx: Context) {
+        context = ctx.applicationContext
+    }
+}