質問編集履歴

不要な部分の削除

2021/12/05 10:03

投稿

AmoAmo

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test CHANGED Viewed

	@@ -1 +1 @@
1	- Android Studioで電卓を作りたいのですが~~意味の分からない~~エラーメッセージが大量に出てしまいました。~~助けて下さい。~~
1	+ Android Studioで電卓を作りたいのですがエラーメッセージが大量に出てしまいました。

test CHANGED Viewed

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不要な行番号の削除

2021/12/05 10:03

投稿

AmoAmo

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test CHANGED Viewed

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test CHANGED Viewed

@@ -194,329 +194,331 @@
 ```kotlin
-1package com.example.dentaku1
-2
-3import androidx.appcompat.app.AppCompatActivity
-4import android.os.Bundle
-5import kotlinx.android.synthetic.main.activity_main.*
-6
-7class MainActivity : AppCompatActivity() {
-8
-9    var nStr : String = ""
-10    val nList = ArrayList<Double>() // arraylist to store numbers
-11    val oList = ArrayList<Char>() // arraylist to store operations
-12
-13    override fun onCreate(savedInstanceState: Bundle?) {
-14        super.onCreate(savedInstanceState)
-15        setContentView(R.layout.activity_main)
-16
-17        num0.setOnClickListener {
-18            formula.text = "${formula.text}0"
-19            nStr += "0"
-20        }
-21        num1.setOnClickListener {
-22            formula.text = "${formula.text}1"
-23            nStr += "1"
-24        }
-25        num2.setOnClickListener {
-26            formula.text = "${formula.text}2"
-27            nStr += "2"
-28        }
-29        num3.setOnClickListener {
-30            formula.text = "${formula.text}3"
-31            nStr += "3"
+package com.example.dentaku1
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import kotlinx.android.synthetic.main.activity_main.*
+class MainActivity : AppCompatActivity() {
+    var nStr : String = ""
+    val nList = ArrayList<Double>() // arraylist to store numbers
+    val oList = ArrayList<Char>() // arraylist to store operations
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main)
+        num0.setOnClickListener {
+            formula.text = "${formula.text}0"
+            nStr += "0"
+        }
+        num1.setOnClickListener {
+            formula.text = "${formula.text}1"
+            nStr += "1"
+        }
+        num2.setOnClickListener {
+            formula.text = "${formula.text}2"
+            nStr += "2"
+        }
+        num3.setOnClickListener {
+            formula.text = "${formula.text}3"            nStr += "3"
 32        }
-33        num4.setOnClickListener {
-34            formula.text = "${formula.text}4"
-35            nStr += "4"
-36        }
-37        num5.setOnClickListener {
-38            formula.text = "${formula.text}5"
-39            nStr += "5"
-40        }
-41        num6.setOnClickListener {
-42            formula.text = "${formula.text}6"
-43            nStr += "6"
-44        }
-45        num7.setOnClickListener {
-46            formula.text = "${formula.text}7"
-47            nStr += "7"
-48        }
-49        num8.setOnClickListener {
-50            formula.text = "${formula.text}8"
-51            nStr += "8"
-52        }
-53        num9.setOnClickListener {
-54            formula.text = "${formula.text}9"
-55            nStr += "9"
-56        }
-57        point.setOnClickListener {
-58            formula.text = "${formula.text}."
-59            nStr += "."
-60        }
-61        equal.setOnClickListener {
-62            formula.text = "${formula.text}="
-63            addList(nStr)
-64            var result = calcualte().toString()
-65            formula.text = result
-66            nStr = result
-67            nList.clear()
-68            oList.clear()
-69        }
-70        add.setOnClickListener {
-71            formula.text = "${formula.text}+"
-72            addList(nStr,'+')
-73            nStr = ""
-74        }
-75        subtract.setOnClickListener {
-76            formula.text = "${formula.text}-"
-77            addList(nStr,'-')
-78            nStr = ""
-79        }
-80        multiply.setOnClickListener {
-81            formula.text = "${formula.text}*"
-82            addList(nStr,'*')
-83            nStr = ""
-84        }
-85        divide.setOnClickListener {
-86            formula.text = "${formula.text}/"
-87            addList(nStr,'/')
-88            nStr = ""
-89        }
-90        delete.setOnClickListener {
-91            var formulaStr = formula.text.toString()
-92            if (!formulaStr.isEmpty()) {
-93                formula.text = formulaStr.subSequence(0,formulaStr.lastIndex)
-94            }
-95            if (!nStr.isEmpty()) {
-96                nStr = nStr.substring(0, nStr.lastIndex)
-97            }
-98        }
-99        percent.setOnClickListener {
-100            formula.text = "${formula.text}%"
-101        }
-102        sign.setOnClickListener {
-103
-104        }
-105        clear.setOnClickListener {
-106            formula.text = ""
-107            nStr = ""
-108            nList.clear()
-109            oList.clear()
-110        }
-111
-112    } // end fun onCreate
-113
-114    fun addList(str : String, ope : Char) {
-115        try {
-116            var num = str.toDouble()
-117            nList.add(num)
-118            oList.add(ope)
-119        }catch(e:Exception){
-120            formula.text = "Numeric error"
-121        }
-122    }
-123
-124    fun addList(str : String) {
-125        try {
-126            var num = str.toDouble()
-127            nList.add(num)
-128        }catch(e:Exception){
-129            formula.text = "Numeric error"
-130        }
-131    }
-132
-133    fun calcualte() : Double {
-134
-135        var i = 0
-136        while (i < oList.size) {
-137            //do multiplication and division first
-138            if(oList.get(i) == '*' || oList.get(i) == '/') {
-139                var result = if (oList.get(i) == '*') nList.get(i) * 140nList.get(i+1) else nList.get(i) / nList.get(i+1)
-141                nList.set(i,result)
-142                nList.removeAt(i+1)
-143                oList.removeAt(i)
-144                i--
-145            }
-146            // change subtraction to addition
-147            else if(oList.get(i) == '-'){
-148                oList.set(i,'+')
-149                nList.set(i+1,nList.get(i+1) * -1)
-150            }
-151            i++
-152        }
-153
-154        // get sum
-155        var result = 0.0
-156        for (i in nList){
-157            result += i
-158        }
-159
-160        return result
-161    }// end fun calcualte
-162
-163} // end class
+3
+        num4.setOnClickListener {
+            formula.text = "${formula.text}4"
+            nStr += "4"
+        }
+        num5.setOnClickListener {
+            formula.text = "${formula.text}5"
+            nStr += "5"
+        }
+        num6.setOnClickListener {
+            formula.text = "${formula.text}6"
+            nStr += "6"
+        }
+        num7.setOnClickListener {
+            formula.text = "${formula.text}7"
+            nStr += "7"
+        }
+        num8.setOnClickListener {
+            formula.text = "${formula.text}8"
+            nStr += "8"
+        }
+        num9.setOnClickListener {
+            formula.text = "${formula.text}9"
+            nStr += "9"
+        }
+        point.setOnClickListener {
+            formula.text = "${formula.text}."
+            nStr += "."
+        }
+        equal.setOnClickListener {
+            formula.text = "${formula.text}="
+            addList(nStr)
+            var result = calcualte().toString()
+            formula.text = result
+            nStr = result
+            nList.clear()
+            oList.clear()
+        }
+        add.setOnClickListener {
+            formula.text = "${formula.text}+"
+            addList(nStr,'+')
+            nStr = ""
+        }
+        subtract.setOnClickListener {
+            formula.text = "${formula.text}-"
+            addList(nStr,'-')
+            nStr = ""
+        }
+        multiply.setOnClickListener {
+            formula.text = "${formula.text}*"
+            addList(nStr,'*')
+            nStr = ""
+        }
+        divide.setOnClickListener {
+            formula.text = "${formula.text}/"
+            addList(nStr,'/')
+            nStr = ""
+        }
+        delete.setOnClickListener {
+            var formulaStr = formula.text.toString()
+            if (!formulaStr.isEmpty()) {
+                formula.text = formulaStr.subSequence(0,formulaStr.lastIndex)
+            }
+            if (!nStr.isEmpty()) {
+                nStr = nStr.substring(0, nStr.lastIndex)
+            }
+        }
+        percent.setOnClickListener {
+            formula.text = "${formula.text}%"
+        }
+        sign.setOnClickListener {
+        }
+        clear.setOnClickListener {
+            formula.text = ""
+            nStr = ""
+            nList.clear()
+            oList.clear()
+        }
+    } // end fun onCreate
+    fun addList(str : String, ope : Char) {
+        try {
+            var num = str.toDouble()
+            nList.add(num)
+            oList.add(ope)
+        }catch(e:Exception){
+            formula.text = "Numeric error"
+        }
+    }
+    fun addList(str : String) {
+        try {
+            var num = str.toDouble()
+            nList.add(num)
+        }catch(e:Exception){
+            formula.text = "Numeric error"
+        }
+    }
+    fun calcualte() : Double {
+        var i = 0
+        while (i < oList.size) {
+            //do multiplication and division first
+            if(oList.get(i) == '*' || oList.get(i) == '/') {
+                var result = if (oList.get(i) == '*') nList.get(i) *
+nList.get(i+1) else nList.get(i) / nList.get(i+1)
+                nList.set(i,result)
+                nList.removeAt(i+1)
+                oList.removeAt(i)
+                i--
+            }
+            // change subtraction to addition
+            else if(oList.get(i) == '-'){
+                oList.set(i,'+')
+                nList.set(i+1,nList.get(i+1) * -1)
+            }
+            i++
+        }
+        // get sum
+        var result = 0.0
+        for (i in nList){
+            result += i
+        }
+        return result
+    }// end fun calcualte
+} // end class
 ```