简单的 Kotlin 项目不显示任何 UI [英] Simple Kotlin Project does not show any UI

问题描述

我有一个 非常简单的 Kotlin 安卓项目.只是为了挖掘 Kodein.我在 main_layout 中看不到两个 TextView?

I have a very simple Android Project in Kotlin. Just to dig in Kodein. I can not see the two TextViews in the main_layout?

我在那里唯一的 MainActivity 使用了 MVP 模式..

I have used MVP pattern for the only MainActivity I have there..

应用程序启动时没有崩溃，并显示一个空白的白屏.

The app starts without a crash and is show a blank white screen.

有什么提示吗?

基础活动:

abstract class BaseActivity<V : BasePresenter.View> : AppCompatActivity(), BasePresenter.View  {

    protected abstract val layoutResourceId : Int
    protected abstract val presenter : BasePresenter<V>

    val kodeinMu = LazyKodein(appKodein)

    protected abstract fun initUI()
    protected abstract fun initPresenter()

    override fun onCreate(savedInstanceState: Bundle?, persistentState: PersistableBundle?) {
        super.onCreate(savedInstanceState, persistentState)
        setContentView(layoutResourceId)

        initUI()
        initPresenter()
    }

    override fun onPause() {
        super.onPause()
        presenter.pause()
    }

    override fun onStop() {
        super.onStop()
        presenter.stop()
    }

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

    protected fun toast(s: String) {
        System.out.println("TAG $s")
    }
}

我读到这是因为 API 28 您只能在 API_28 设备或模拟器上看到.模拟器或真机也被屏蔽了.

I have read that it is because of API 28 you only can see on API_28 devices or emulators. Either emulator or on real device were also blanked out.

推荐答案

您在您的活动中重写了错误的 onCreate(savedInstanceState: Bundle?, persistentState: PersistableBundle?):使用这个:onCreate(savedInstanceState: Bundle?)

You override the wrong onCreate(savedInstanceState: Bundle?, persistentState: PersistableBundle?) in you activity: use this : onCreate(savedInstanceState: Bundle?)

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