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

我有一个科特林非常简单的Android项目.只是为了挖科丁.我在main_layout中看不到两个TextViews?

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?

我已经在其中使用的唯一MainActivity使用了MVP模式.

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

该应用程序启动时没有崩溃，并显示了空白的空白屏幕.

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

有任何提示吗?

BaseActivity:

BaseActivity:

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")
    }
}

我读到这是因为您只有在API_28设备或仿真器上才能看到的API 28.模拟器或真实设备上的内容也都被清空了.

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

您在活动中覆盖了错误的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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