Android应用程序无法在任何仿真器中运行

Question

我的应用程序无法运行。可能有一些我无法弄清楚的错误。

那么谁能告诉我为什么，并帮助我解决代码？

这里是我的代码：

package com.djrockerstudio.pc 

import android.support.v7.app.AppCompatActivity 
import android.os.Bundle 
import kotlinx.android.synthetic.main.activity_main.* 

class MainActivity : AppCompatActivity() { 
    override fun onCreate(savedInstanceState: Bundle?) { 
     super.onCreate(savedInstanceState) 
     setContentView(R.layout.activity_main) 

     btnCal.setOnClickListener { 
      val sum: Int = cal() 
      result.text = String.format("$%,.2f", sum) 
     } 

    } 
    private fun cal(): Int { 
     val pStandardIndex = 1000 
     val pIndex1 = 1500 
     val pIndex2 = 2000 
     val pIndexOver2 = 2500 
     val powerIndex: Int = inp.text.toString().toInt() 
     val standIndex: Int = inp2.text.toString().toInt() 
     val indexL1: Int = inp3.text.toString().toInt() 
     val indexL2: Int = inp4.text.toString().toInt() 
     var std = 0 
     var idx1 = 0 
     var idx2 = 0 
     var oIdx2 = 0 
     when (powerIndex) { 
      in 0..standIndex   -> std  = standIndex*pStandardIndex 
      in (standIndex+1)..indexL1 -> idx1  = (indexL1-standIndex)*pIndex1 
      in (indexL1+1)..indexL2  -> idx2  = (indexL2-indexL1)*pIndex2 
      else      -> oIdx2 = (powerIndex-indexL2)*pIndexOver2 
     } 
     val sum = std+idx1+idx2+oIdx2 
     return sum 
    } 

} 

这里是我的XML代码：

<?xml version="1.0" encoding="utf-8"?> 
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:app="http://schemas.android.com/apk/res-auto" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    tools:context="com.djrockerstudio.pc.MainActivity"> 

    <LinearLayout 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     app:layout_constraintBottom_toBottomOf="parent" 
     app:layout_constraintLeft_toLeftOf="parent" 
     app:layout_constraintRight_toRightOf="parent" 
     app:layout_constraintTop_toTopOf="parent" 
     android:orientation="vertical" 
     android:padding="10dp"> 
     <LinearLayout 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:orientation="horizontal"> 
      <LinearLayout 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:orientation="vertical"> 
       <TextView 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:text="Power index (Kwh)" 
        android:textSize="14sp" 
        android:textColor="#000" 
        android:padding="5dp" 
        android:layout_margin="6dp"/> 
       <TextView 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:text="Standard index" 
        android:textSize="14sp" 
        android:textColor="#000" 
        android:padding="5dp" 
        android:layout_margin="6dp"/> 
       <TextView 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:text="Index level 1" 
        android:textSize="14sp" 
        android:textColor="#000" 
        android:padding="5dp" 
        android:layout_margin="6dp"/> 
       <TextView 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:text="Index level 2" 
        android:textSize="14sp" 
        android:textColor="#000" 
        android:padding="5dp" 
        android:layout_margin="6dp"/> 
      </LinearLayout> 
      <LinearLayout 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:orientation="vertical"> 
       <EditText 
        android:id="@+id/inp" 
        android:background="@drawable/edit_text_style" 
        android:layout_width="200dp" 
        android:layout_height="30dp" 
        android:layout_margin="5dp" 
        android:inputType="numberDecimal"/> 
       <EditText 
        android:id="@+id/inp2" 
        android:background="@drawable/edit_text_style" 
        android:layout_width="200dp" 
        android:layout_height="30dp" 
        android:layout_margin="5dp" 
        android:inputType="numberDecimal"/> 
       <EditText 
        android:id="@+id/inp3" 
        android:background="@drawable/edit_text_style" 
        android:layout_width="200dp" 
        android:layout_height="30dp" 
        android:layout_margin="5dp" 
        android:inputType="numberDecimal"/> 
       <EditText 
        android:id="@+id/inp4" 
        android:background="@drawable/edit_text_style" 
        android:layout_width="200dp" 
        android:layout_height="30dp" 
        android:layout_margin="5dp" 
        android:inputType="numberDecimal"/> 
      </LinearLayout> 
     </LinearLayout> 
     <LinearLayout 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:orientation="horizontal" 
      android:gravity="center" 
      android:padding="10dp"> 
      <Button 
       android:id="@+id/btnCal" 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:text="Calculate" 
       android:background="@drawable/btn_style" 
       android:textColor="#FFF" /> 
     </LinearLayout> 
     <LinearLayout 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:orientation="horizontal" 
      android:padding="10dp"> 
      <TextView 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:text="Total amount:" 
       android:textSize="14sp" 
       android:textColor="#000" 
       android:padding="5dp"/> 
      <TextView 
       android:id="@+id/result" 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:textSize="14sp" 
       android:textColor="#00F" 
       android:padding="5dp"/> 
     </LinearLayout> 
    </LinearLayout> 

</android.support.constraint.ConstraintLayout> 

Answer 1

，该应用程序不能是因为我用Bluestack，它只是没有工作的问题。做上述工作，我发现代码中的解决方案是在这里：

private fun cal(): Double { 
     val pStandardIndex = 1000 
     val pIndex1 = 1500 
     val pIndex2 = 2000 
     val pIndexOver2 = 2500 
     val powerIndex = inp.text.toString().toInt() 
     val standIndex = inp2.text.toString().toInt() 
     val indexL1 = inp3.text.toString().toInt() 
     val indexL2 = inp4.text.toString().toInt() 
     val sum: Double 
     when (powerIndex) { 
      in 0 .. standIndex -> sum = standIndex*pStandardIndex.toDouble() 
      in (standIndex+1) .. indexL1 -> sum = (standIndex*pStandardIndex) + ((indexL1-standIndex)*pIndex1).toDouble() 
      in (indexL1+1) .. indexL2 -> sum = (standIndex*pStandardIndex) + ((indexL1-standIndex)*pIndex1) + ((indexL2-indexL1)*pIndex2).toDouble() 
      else -> sum = (standIndex*pStandardIndex) + ((indexL1-standIndex)*pIndex1) + ((indexL2-indexL1)*pIndex2) + ((powerIndex-indexL2)*pIndexOver2).toDouble() 
     } 
     return sum 
    }