How to use this and context in other class Android Kotlin?

Question

I want to create a askMicrophonePermission function in Permission.class. And write Permission().askMicrophonePermission() in onCreate().

I don't known how to change this so that ActivityCompat.checkSelfPermission and ActivityCompat.requestPermissions can run in the Permission().askMicrophonePermission().

Here is my code:

MainActivity:

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        Permission().askMicrophonePermission()
    }
}

Permission:

class Permission {
    fun askMicrophonePermission(){

        val userMicrophonePermissionAgreeCode = 1
        val currentMicrophonePermission = ActivityCompat.checkSelfPermission(_________,android.Manifest.permission.RECORD_AUDIO)
        if (currentMicrophonePermission != PackageManager.PERMISSION_GRANTED){
           ActivityCompat.requestPermissions(_______________, arrayOf(android.Manifest.permission.RECORD_AUDIO), userMicrophonePermissionAgreeCode)
        }
    }
}

Answer 1

You can use below

For KOTLIN

• this replaced by this@MainActivity

You should set

Permission().askMicrophonePermission(this@MainActivity)

Then Pass Context.

 fun askMicrophonePermission(context: Context)

Interface to global information about an application environment. This is an abstract class whose implementation is provided by the Android system.

FYI

In a member of a class, this refers to the current object of that class.

Answer 2

You can harness the power of companion object in Kotlin and create static methods like Java.

private companion object {
    fun askMicrophonePermission(context: Context) {

        val userMicrophonePermissionAgreeCode = 1
        val currentMicrophonePermission = ActivityCompat.checkSelfPermission(context, android.Manifest.permission.RECORD_AUDIO)
        if (currentMicrophonePermission != PackageManager.PERMISSION_GRANTED) {
            ActivityCompat.requestPermissions(context, arrayOf(android.Manifest.permission.RECORD_AUDIO), userMicrophonePermissionAgreeCode)
        }
    }
}

And then you use it like

ClassName.askMicrophonePermission(this@YouActivity)