可在安口无法预览

Question

我有这样的问题：

错误：

C:\Users\avi12\OneDrive\Documents\AndroidApps\WhatsApp Easy Sticker Maker\app\src\main\java\com\avi12\whatsappeasystickermaker\MainActivity.kt: (20, 13): Overload resolution ambiguity:
public inline fun ViewManager.textView(init: (@AnkoViewDslMarker TextView).() -> Unit): TextView defined in org.jetbrains.anko
public inline fun ViewManager.textView(init: (@AnkoViewDslMarker TextView).() -> Unit): TextView defined in org.jetbrains.anko

我的代码，因为我刚开始发现安口：

package com.avi12.whatsappeasystickermaker

import android.os.Bundle
import android.support.v7.app.AppCompatActivity
import org.jetbrains.anko.design.*
import org.jetbrains.anko.*

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        coordinatorLayout {
            textView {
                text = "Begin by tapping the + button"
            }
            floatingActionButton {

            }
        }
    }
}

安口版本：0.10.8 安卓Studio版本：3.3

Answer 1

什么似乎是问题是，在build.gradle我有：

dependencies {
    ...
    implementation "org.jetbrains.anko:anko-sdk25:$anko_version" // sdk15, sdk19, sdk21, sdk23 are also available
    implementation "org.jetbrains.anko:anko-appcompat-v7:$anko_version"
}

出于某种原因，这在某种程度上解决了这个问题（在成功构建方面，但仍然没有预览）：

dependencies {
    ...
    // implementation "org.jetbrains.anko:anko-sdk25:$anko_version" // sdk15, sdk19, sdk21, sdk23 are also available
    implementation "org.jetbrains.anko:anko-appcompat-v7:$anko_version"
}

Answer 2

...预览仅仅在进行，我们在实现AnkoComponent接口的外部类中定义我们的布局。下面是我们将如何改变我们的活动在一个单独的类来定义我们的观点：

class MainActivity : AppCompatActivity() {

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    MainActivityUI().setContentView(this)
}

class MainActivityUI : AnkoComponent<MainActivity> {
    override fun createView(ui: AnkoContext<MainActivity>) = with(ui) {
        verticalLayout {
            gravity = Gravity.CENTER
            padding = dip(20)

            textView {
                gravity = Gravity.CENTER
                text = "Enter your request"
                textColor = Color.BLACK
                textSize = 24f
            }.lparams(width = matchParent) {
                margin = dip(20)
            }

            val name = editText {
                hint = "What is your name?"
            }

            editText {
                hint = "What is your message?"
                lines = 3
            }

            button("Enter") {
                onClick {
                    toast( "Hey ${name.text}! Thank you for contacting us. We will get in touch with you soon.")
                }
            }.lparams(dip(280), sp(80))

        }
    }
}

}

我希望它解决了这个问题，我会发现不久...