CustomAertの入力並びに表示について

swift
1import UIKit
2
3class numberView: UIView {
4    
5    @objc func proteinX(_ sender: UITextField) {
6        if let text = sender.text {
7            protein.text = "P: " + ptxt.text!
8            print(text)
9        }
10    }
11    
12    @objc func fatX(_ sender: UITextField) {
13        if let text = sender.text {
14            fat.text = "F: " + ftxt.text!
15            print(text)
16        }
17    }
18    
19    @objc func carboX(_ sender: UITextField) {
20        if let text = sender.text {
21            carbo.text = "C: " + ctxt.text!
22            print(text)
23        }
24    }
25    
26    @objc func kcalX(_ sender: UITextField) {
27        if let text = sender.text {
28            total.text = "K: " + ktxt.text! + " kcal"
29            print(text)
30        }
31    }
32    
33    override init(frame: CGRect){
34        super.init(frame: frame)
35        loadNib()
36    }
37    
38    required init(coder aDecoder: NSCoder) {
39        super.init(coder: aDecoder)!
40        loadNib()
41    }
42    
43    func loadNib(){
44        let view = Bundle.main.loadNibNamed("numberViewController", owner: self, options: nil)?.first as! UIView
45        
46        ptxt.addTarget(self, action: #selector(self.proteinX(_:)), for: .editingChanged)
47        ftxt.addTarget(self, action: #selector(self.fatX(_:)), for: .editingChanged)
48        ctxt.addTarget(self, action: #selector(self.carboX(_:)), for: .editingChanged)
49        ktxt.addTarget(self, action: #selector(self.kcalX(_:)), for: .editingChanged)
50        
51        ptxt.isHidden = false
52        ftxt.isHidden = true
53        ctxt.isHidden = true
54        ktxt.isHidden = true
55        
56        
57        view.frame = self.bounds
58        self.addSubview(view)
59    }
60    
61    @IBAction func choice(_ sender: Any) {
62        
63        switch (sender as AnyObject).selectedSegmentIndex {
64        case 0:
65            ptxt.isHidden = false
66            ftxt.isHidden = true
67            ctxt.isHidden = true
68            ktxt.isHidden = true
69            
70            print("1")
71        case 1:
72            ptxt.isHidden = true
73            ftxt.isHidden = false
74            ctxt.isHidden = true
75            ktxt.isHidden = true
76            ftxt.becomeFirstResponder()
77            
78            print("2")
79        case 2:
80            ptxt.isHidden = true
81            ftxt.isHidden = true
82            ctxt.isHidden = false
83            ktxt.isHidden = true
84            ctxt.becomeFirstResponder()
85            
86            print("3")
87        case 3:
88            ptxt.isHidden = true
89            ftxt.isHidden = true
90            ctxt.isHidden = true
91            ktxt.isHidden = false
92            ktxt.becomeFirstResponder()
93            
94            print("3")
95        default:
96            print("nil")
97        }
98    }
99    
100    
101     @IBAction func one(_ sender: Any) {
102        
103       let value = ptxt.text! + "1"
104        if let price = Int(value) {
105            ptxt.text = "(price)"
106            protein.text = "P: " + ptxt.text!
107        }
108        let value2 = ftxt.text! + "1"
109        if let price = Int(value2) {
110            ftxt.text = "(price)"
111            fat.text = "F: " + ftxt.text!
112        }
113        let value3 = ctxt.text! + "1"
114        if let price = Int(value3) {
115            ctxt.text = "(price)"
116            carbo.text = "C: " + ctxt.text!
117        }
118        let value4 = ktxt.text! + "1"
119        if let price = Int(value4) {
120            ktxt.text = "(price)"
121            total.text = "K: " + ktxt.text! + " kcal"
122        }
123    }
124    
125    
126　　//2~9は字数制限の問題上、省略しています。
127    }
128    
129    @IBAction func zero(_ sender: Any) {
130        let value = ptxt.text! + "0"
131        if let price = Int(value) {
132            ptxt.text = "(price)"
133            protein.text = "P: " + ptxt.text!
134        }
135        let value2 = ftxt.text! + "0"
136        if let price = Int(value2) {
137            ftxt.text = "(price)"
138            fat.text = "F: " + ftxt.text!
139        }
140        let value3 = ctxt.text! + "0"
141        if let price = Int(value3) {
142            ctxt.text = "(price)"
143            carbo.text = "C: " + ctxt.text!
144        }
145        let value4 = ktxt.text! + "0"
146        if let price = Int(value4) {
147            ktxt.text = "(price)"
148            total.text = "K: " + ktxt.text! + " kcal"
149        }
150    }
151    
152    @IBAction func point(_ sender: Any) {
153       
154        let value = ptxt.text! + "."
155        if let price = Double(value) {
156            ptxt.text = "(price)"
157            protein.text = "P: " + ptxt.text!
158        }
159        let value2 = ftxt.text! + "."
160        if let price = Double(value2) {
161            ftxt.text = "(price)"
162            fat.text = "F: " + ftxt.text!
163        }
164        let value3 = ctxt.text! + "."
165        if let price = Double(value3) {
166            ctxt.text = "(price)"
167            carbo.text = "C: " + ctxt.text!
168        }
169        let value4 = ktxt.text! + "."
170        if let price = Double(value4) {
171            ktxt.text = "(price)"
172            total.text = "K: " + ktxt.text! + " kcal"
173        }
174       
175    }
176}

実現したい事

~~0. 小数点以下の入力をしたい~~

出来ている事/困っている事

0.
1
2### 改善点
3以下のようにすることで小数点以下の値まで入力出来るようになりました。
4しかし、クリアボタンをタップした時に数字は消えるのですが小数点だけ残ってしまいます。
5```swift
6func addnumber(number: String) {
7        var textnumber = ptxt.text!
8        textnumber = textnumber + number
9        ptxt.text = textnumber
10        protein.text = "P: " + textnumber
11    }
12    
13    func addnumber2(number2: String) {
14        var textnumber2 = ftxt.text!
15        textnumber2 = textnumber2 + number2
16        ftxt.text = textnumber2
17        fat.text = "F: " + textnumber2
18    }
19    
20    func addnumber3(number3: String) {
21        var textnumber3 = ctxt.text!
22        textnumber3 = textnumber3 + number3
23        ctxt.text = textnumber3
24        carbo.text = "C" + textnumber3
25    }
26    func addnumber4(number4: String) {
27        var textnumber4 = ktxt.text!
28        textnumber4 = textnumber4 + number4
29        ktxt.text = textnumber4
30        total.text = textnumber4 + "kcal"
31    }
32    
33    
34    @IBAction func one(_ sender: Any) {
35        
36        addnumber(number: "1")
37        addnumber2(number2: "1")
38        addnumber3(number3: "1")
39        addnumber4(number4: "1")
40       
41    }
42    
43    @IBAction func two(_ sender: Any) {
44        addnumber(number: "2")
45       
46    }
47   //~~省略~~
48    
49    @IBAction func zero(_ sender: Any) {
50        addnumber(number: "0")
51        
52    }
53    
54    @IBAction func point(_ sender: Any) {
55       
56        addnumber(number: ".")
57       
58    }
59    
60    @IBAction func clear(_ sender: Any) {
61        ptxt.text! = ""
62    }
63}
64```

行動規範の内容に同意します

回答1件

ベストアンサー

例えば20.5を入力しようとした時、.を入植した時点ではtextは20.となります。その状態でDoubleに変換しようとすると20になるか変換できないかのどちらかになるからかと思います。
１つの方法としては、.を入力された段階ではtextには反映せずフラグを立てるなどして次の数字が入力された時に20.5のように反映するのが良いのかと思います。

投稿2018/07/09 08:24