在 Android 和 session 中存储公共数据的最佳方式？

Question

When user open my Application.

It will call API to my server, and take the json and stored in somewhere, and the json It stored can use anywhere in my application (any Activity , any Fragment , like SharedPreference ).

When user close the application, data will clear. Reopen it, It's will calling and storing data again.

What method should I can use? Or any other implementation? Thank you

Answer 1

Extend Application class like this:

    class Global: Application() {
    
        init { instance = this }
    
        companion object {
            private var instance: Global? = null
            lateinit var json: JSONProp
        }

        override fun onCreate() {
            super.onCreate()
            //Fetch Json and store it in jsonProp
        }
    }

Manifest:

<application android:name=".Global" />

You can then use the data anywhere in the app while it's alive like this:

val json = Global.json