导入冲突，导入名称\'Toast\'不明确

Question

我正在尝试在 Circle CI 上运行构建，但在 android kotlin 中面临这个模棱两可的 checkstyle 错误，我不知道为什么会发生这种情况，下面是我遇到的错误：

/home/circleci/repo/app/src/main/java/com/andela/mrm/util/ConvergeUIUtils.kt: (12, 23): Conflicting import, imported name 'Toast' is ambiguous e: /home/circleci/repo/app/src/main/java/com/andela/mrm/util/ConvergeUIUtils.kt: (14, 23): Conflicting import, imported name 'Toast' is ambiguous

以下是ConvergeUIUtils.kt 文件：

import android.content.Context
import android.graphics.Color
import android.graphics.PorterDuff
import android.support.constraint.ConstraintLayout
import android.support.design.widget.Snackbar
import android.support.v4.content.ContextCompat
import android.view.Gravity
import android.view.View
import android.widget.TextView
import android.widget.Toast
import com.andela.mrm.R


/**
 * Important methods for the application UI.
 */
class ConvergeUIUtils
/**
 * Private constructor to prevent instantiation.
 */
private constructor() {
    init {
        throw UnsupportedOperationException()
    }

    companion object {
        /**
         * Show snackbar with edited properties.
         *
         * @param context the view context.
         * @param view the view to display the snackbar.
         * @param string the message to be displayed.
         */
        fun showSnackBar(context: Context, view: View, string: String) {
            val snackbar = Snackbar.make(view, string, Snackbar.LENGTH_LONG)
            val snackbarView = snackbar.view
            snackbarView.setPadding(10, 10, 10, 12)
            if (string.contains("extended")) {
                snackbarView.setBackgroundColor(ContextCompat.getColor(context, R.color.waiting_color))
            } else {
                snackbarView.setBackgroundColor(ContextCompat.getColor(context,
                        R.color.colorPrimaryDark))
            }
            snackbar.show()
        }

        /**
         * @param context the view context.
         * @param string the message of the toast.
         */

        fun showToast(context: Context, string: String) {
            val toast = Toast.makeText(context, string, Toast.LENGTH_LONG)
            toast.setGravity(Gravity.BOTTOM or Gravity.LEFT, 50, 50)
            val view = toast.view

            if (string.isNullOrBlank()) {

                view.setBackgroundResource(R.drawable.notification_success_img)
                toast.show()
            } else {

                if (string.contains("extended")) {
                    view.background.setColorFilter(ContextCompat.getColor(context, R.color.waiting_color),
                            PorterDuff.Mode.SRC_IN)
                    val text = view.findViewById<TextView>(android.R.id.message)
                    text.setTextColor(Color.WHITE)
                } else {
                    view.background.setColorFilter(ContextCompat.getColor(context,
                            R.color.colorPrimaryDark), PorterDuff.Mode.SRC_IN)
                }
                val text = view.findViewById<TextView>(android.R.id.message)
                text.setTextColor(Color.WHITE)
                toast.show()
            }

        }


        /**
         * set background color for free time button.
         *
         * @param context the view context.
         * @param freeDisplay the free time button.
         */
        fun setButtonColor(context: Context, freeDisplay: ConstraintLayout) {
            val normalDrawable = context.getDrawable(R.drawable.btn_room_extra_time)
            normalDrawable!!.setColorFilter(-0x1, PorterDuff.Mode.SRC_ATOP)
            freeDisplay.background = normalDrawable
        }

    }
}

我怎样才能克服这个 checkstyle 错误？

这是错误的图片。

Answer 1

您的导入有多个名为 Toast 的类。

Kotlin 支持导入别名：https://kotlinlang.org/docs/reference/packages.html

import android.widget.Toast as WToast