mvp的base类

最新推荐文章于 2022-03-29 15:06:59 发布

原创最新推荐文章于 2022-03-29 15:06:59 发布 · 152 阅读

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本文探讨了基于BasePresenter的设计模式在Android、iOS和Web应用中的应用，展示了如何通过基类BasePresenter统一Fragment和Activity的视图管理，并实现Presenter的抽象。涉及关键概念如抽象方法getLayout()、initData()和initPresenter()的实现细节。

P层

open class BasePresenter<V> {
    var view : V ? = null
}

activity

abstract class BaseActivity<V,P:BasePresenter<V>>: AppCompatActivity() {
    var presenter : P? = null
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(getLayout())
        presenter = initPresenter()
        presenter?.view = this as V
        initData()
    }
    abstract fun getLayout():Int
    abstract fun initData()
    abstract fun initPresenter():P?

    override fun onDestroy() {
        super.onDestroy()
        presenter?.view = null
        presenter = null
    }
}

fragment

abstract class BaseFragment<V,P:BasePresenter<V>> : Fragment() {
    var presenter: P? = null

    override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        return inflater.inflate(getLayout(),container,false)
    }

    override fun onActivityCreated(savedInstanceState: Bundle?) {
        super.onActivityCreated(savedInstanceState)
        presenter = initPresenter()
        presenter?.view = this as V
        initData()
    }

    abstract fun getLayout(): Int
    abstract fun initPresenter():P?
    abstract fun initData()

    override fun onDestroy() {
        super.onDestroy()
        presenter?.view = null
        presenter = null
    }
}