Nimaga ko'p dasturchilar MVP arxitekturadan voz kechadi?

• Boilerplate. View va Presenter'ni bog'lash uchun ko'p kod: View uchun interfeyslar, Presenter'ning amalga oshirilishi, hayot aylanishi uchun handlerlar.
• Presenter'ni test qilishda qiyinchiliklar. Presenter'ni test qilish uchun ko'pincha View'ni mock qilish kerak, bu esa murakkab va bog'liqliklarga ega bo'lishi mumkin.
• Holatni saqlash muammolari. Konfiguratsiya o'zgarganda (masalan, ekranni aylantirishda), Presenter holatini qo'lda saqlash va tiklash zarur bo'ladi, bu esa qiyinchilik tug'dirishi mumkin.
• Yomon kengaytiriluvchanlik. Ekran murakkablashgani sayin, Presenter og'ir va qo'llab-quvvatlash qiyin bo'lishi mumkin.
• View va ma'lumotlar o'rtasida to'g'ridan-to'g'ri bog'lanish yo'q. View ma'lumotlarga to'g'ridan-to'g'ri kirish imkoniga ega emas, barcha so'rovlar Presenter orqali o'tadi, bu oddiy operatsiyalarni murakkablashtirishi mumkin.

MVPda boilerplate'ni ko'rsatadigan kod misoli:

// View interfeysi
interface MyView {
    fun showData(data: List<String>)
    fun showError(message: String)
}

// Presenter interfeysi
interface MyPresenter {
    fun attachView(view: MyView)
    fun detachView()
    fun loadData()
}

// Presenter amalga oshirilishi
class MyPresenterImpl(private val model: MyModel) : MyPresenter {

    private var view: MyView? = null

    override fun attachView(view: MyView) {
        this.view = view
    }

    override fun detachView() {
        view = null
    }

    override fun loadData() {
        // Ma'lumotlarni yuklash simulatsiyasi
        val data = model.getData()
        view?.showData(data)
    }
}

// Activityda foydalanish misoli
class MyActivity : AppCompatActivity(), MyView {

    private lateinit var presenter: MyPresenter

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

        presenter = MyPresenterImpl(MyModel())
        presenter.attachView(this)
        presenter.loadData()
    }

    override fun onDestroy() {
        super.onDestroy()
        presenter.detachView()
    }

    override fun showData(data: List<String>) {
        // UI yangilash
    }

    override fun showError(message: String) {
        // Xato haqida xabar berish
    }
}