CODEWITHSUNDEEP
kotlinmvvmviewmodel
Ginanjar Setiawan
Ginanjar Setiawan

Reputation: 166

how to initialize binding to be property (android viewmodel )?

I want the variable binding to be a property so that it can be accessed for all methods, but I don't know how to initialize it (kotlin)

 val binding: pendaftaranBinding=
        DataBindingUtil.inflate(inflater, R.layout.pendaftaran, container, false)

to

var binding: .........................
binding: pendaftaranBinding=
            DataBindingUtil.inflate(inflater, R.layout.pendaftaran, container, false)

Upvotes: 0

Views: 3306

Answers (3)

Animesh Sahu
Animesh Sahu

Reputation: 8106

To initialize the property in the init{} block

You could assign the Type and then initialize it later after doing some tasks in the init{} block.

val binding: pendaftaranBinding

init{
    ...
    binding = DataBindingUtil.inflate(inflater, R.layout.pendaftaran, container, false)
    ...
}

To initialize it later on the code

If you like not to initialize in the construction of the class, instead to initialize it later in the code, you could use lateinit modifier:

lateinit var binding: pendaftaranBinding

fun someFunction() {
    ...
    binding = DataBindingUtil.inflate(inflater, R.layout.pendaftaran, container, false)
    ...
}

so that it can be accessed for all methods

I didn't understand this line, seems like you want something like static properties in java, initialize it outside the class. It could be done by using a companion object in kotlin:

class YourClass {
    companion object {
        lateinit var binding: pendaftaranBinding
    }
}

fun initializeBinding() {
    YourClass.binding =
        DataBindingUtil.inflate(inflater, R.layout.pendaftaran, container, false)

}

Upvotes: 1

Narek Hayrapetyan
Narek Hayrapetyan

Reputation: 1929

lateinit var binding: pendaftaranBinding

init {
   binding = DataBindingUtil.inflate(inflater, R.layout.pendaftaran, container, false)
}

or

You can use binding delegate please read: this if you want to use val instead of var

Upvotes: 2

Taseer
Taseer

Reputation: 3502

so that it can be accessed for all methods

If I understood correctly, you mean that you want to access a pendaftaranBinding type variable in other methods, then you simply declare that variable in the class's body.

Example: 

class YourActivity : AppCompatActivity() {
     private lateinit var yourBinding: pendaftaranBinding

    override fun onCreate() {
       yourBinding = DataBindingUtil.inflate(inflater, R.layout.pendaftaran, container, false)
    }

    private fun yourOtherMethod() {
        yourBinding.yourView
    }
}

Upvotes: 3

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