回答編集履歴
4
コード入れ替え
test
CHANGED
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@@ -1,152 +1,9 @@
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1
1
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ViewModel や Binding は関係無さそうですのでその辺りを省いて試してみましたが、恐らく「 10000 の行」の EditText を選択・編集しても ListView の選択行が「 1 の行」のままなため、 notifyDataSetChanged で ListView の表示を更新した際に選択行を表示しようとして先頭に戻っているのではないでしょうか。
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2
2
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EditText (や +/- のボタンも?) にフォーカスが当たった時点で ListView の選択行をその EditView のある行に設定しては如何でしょう。
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3
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-
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4
3
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ただ、 notify すると EditText の編集モードが解除されてしまいますので、 notify を起こさずに各データを更新するルートを通すのが良さそうです。
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5
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-
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6
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-
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4
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+
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7
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-
```kotlin
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8
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//import android.database.DataSetObserver
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9
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-
import androidx.appcompat.app.AppCompatActivity
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10
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import android.os.Bundle
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11
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import android.text.Editable
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12
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import android.text.TextWatcher
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13
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-
import android.view.LayoutInflater
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14
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import android.view.View
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15
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import android.view.ViewGroup
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16
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import android.widget.*
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import java.lang.IllegalArgumentException
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18
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import java.util.function.Consumer
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19
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-
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20
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class MainActivity : AppCompatActivity() {
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21
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override fun onCreate(savedInstanceState: Bundle?) {
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super.onCreate(savedInstanceState)
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23
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setContentView(R.layout.activity_main)
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24
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-
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25
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val sumMoney: TextView = findViewById(R.id.lvSumMoney)
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26
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-
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val listView = findViewById<ListView>(R.id.lvItems)
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28
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val adapter = InputAdapter { sum -> sumMoney.text = sum.toString() }
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29
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listView.adapter = adapter
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30
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-
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31
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//adapter.registerDataSetObserver(object: DataSetObserver() {
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32
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// override fun onChanged() {
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33
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// sumMoney.text = adapter.sum().toString()
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34
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// }
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35
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// override fun onInvalidated() {
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36
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// sumMoney.text = "0"
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37
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// }
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38
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//})
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39
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-
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40
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findViewById<RadioGroup>(R.id.addTypes).apply {
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41
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setOnCheckedChangeListener { _, id ->
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42
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when (id) {
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43
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R.id.ten -> adapter.delta = 10
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44
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R.id.twenty -> adapter.delta = 20
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45
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R.id.fifty -> adapter.delta = 50
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46
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else -> adapter.delta = 1
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47
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}
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48
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}
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49
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check(R.id.single)
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50
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}
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51
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}
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}
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53
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-
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54
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class InputAdapter(val listView: ListView? = null, val sumConsumer: Consumer<Int>? = null) : BaseAdapter() {
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55
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companion object {
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56
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private val moneyTypes = listOf(1, 5, 10, 50, 100, 500, 1000, 2000, 5000, 10000)
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57
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}
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58
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59
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private inner class Money(val type: Int, var amount: Int = 0) {
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60
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fun value(): Int = type * amount
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61
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}
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62
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private val moneys = List<Money>(moneyTypes.size) { i -> Money(moneyTypes[i]) }
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63
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var delta: Int = 1
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65
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override fun getCount(): Int = moneys.size
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66
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override fun getItem(position: Int): Any = moneys[position]
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67
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override fun getItemId(position: Int): Long = 0
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68
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69
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override fun getView(position: Int, convertView: View?, parent: ViewGroup): View {
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70
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val view: View
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71
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-
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5
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(入りきれなくなったので当初のコードは削除)
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72
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-
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6
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+
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73
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view.tag = ViewHolder(view)
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} else {
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75
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view = convertView
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}
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val tag = view.tag as ViewHolder
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tag.moneyType.setText(moneys[position].type.toString())
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tag.inputMoneyAmount.setText(moneys[position].amount.toString())
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return view
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81
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}
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82
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83
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fun sum(): Int {
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84
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var sum = 0
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85
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for(money in moneys) sum += money.value()
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return sum
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}
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88
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89
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private fun set(type: Int, amount: Int): Int {
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90
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moneys[getTypePosition(type)].amount = amount
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91
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//notifyDataSetChanged()
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92
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sumConsumer?.accept(sum())
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93
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return amount
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94
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}
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95
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private fun get(type: Int): Int {
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96
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return moneys[getTypePosition(type)].amount
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97
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}
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98
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-
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99
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private fun countUp(type: Int): Int {
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100
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return (get(type) + delta).also { set(type, it) }
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101
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}
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102
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private fun countDown(type: Int): Int {
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103
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return (Math.max(get(type) - delta, 0)).also { set(type, it) }
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104
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}
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105
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-
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106
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//private fun setRowFocus(type: Int) {
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107
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// listView.setSelection(getTypePosition(type))
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108
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//}
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109
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-
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110
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private fun getTypePosition(type: Int): Int {
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111
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for(i in 0..moneys.size-1) if(moneys[i].type == type) return i
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112
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throw IllegalArgumentException("unknown type: " + type)
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113
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}
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114
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-
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115
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inner class ViewHolder(view: View) {
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116
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val moneyType: TextView
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117
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val inputMoneyAmount: EditText
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118
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init {
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119
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moneyType = view.findViewById(R.id.moneyType)
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120
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inputMoneyAmount = view.findViewById<EditText>(R.id.inputMoneyAmount).apply {
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121
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addTextChangedListener(object: TextWatcher {
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122
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override fun afterTextChanged(p0: Editable?) {
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123
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val amount = p0.toString().toIntOrNull() ?: 0
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124
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set(moneyType.text.toString().toInt(), amount)
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125
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}
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126
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override fun beforeTextChanged(p0: CharSequence?, p1: Int, p2: Int, p3: Int) {}
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127
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override fun onTextChanged(p0: CharSequence?, p1: Int, p2: Int, p3: Int) {}
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128
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})
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129
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//setOnFocusChangeListener { v, hasFocus ->
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130
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// if(hasFocus) setRowFocus(moneyType.text.toString().toInt())
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131
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//}
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132
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setSelectAllOnFocus(true)
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133
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}
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134
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view.findViewById<Button>(R.id.subButton).apply {
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135
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setOnClickListener {
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136
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inputMoneyAmount.setText(countDown(moneyType.text.toString().toInt()).toString())
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137
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}
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138
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isFocusable = false
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139
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}
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140
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view.findViewById<Button>(R.id.addButton).apply {
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141
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setOnClickListener {
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142
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inputMoneyAmount.setText(countUp(moneyType.text.toString().toInt()).toString())
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143
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}
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144
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isFocusable = false
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145
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}
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146
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}
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147
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}
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148
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}
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149
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```
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150
7
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---
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151
8
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ListView に依らず、コードでレイアウトを作ってしまうほうが簡単かもしれません。
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152
9
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```kotlin
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@@ -259,3 +116,161 @@
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259
116
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var delta: Int = 1
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260
117
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}
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261
118
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```
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119
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+
res/layout/activity_main.xml
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120
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+
```xml
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121
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<?xml version="1.0" encoding="utf-8"?>
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122
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<androidx.constraintlayout.widget.ConstraintLayout
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123
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xmlns:android="http://schemas.android.com/apk/res/android"
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124
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+
xmlns:app="http://schemas.android.com/apk/res-auto"
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125
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xmlns:tools="http://schemas.android.com/tools"
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126
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+
android:layout_width="match_parent"
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127
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+
android:layout_height="match_parent">
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128
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+
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129
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<ScrollView
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130
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android:id="@+id/scrollView"
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131
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+
android:layout_width="match_parent"
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132
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+
android:layout_height="0dp"
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133
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+
android:orientation="vertical"
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134
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app:layout_constraintBottom_toTopOf="@id/lvSumMoney"
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135
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+
app:layout_constraintEnd_toEndOf="parent"
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136
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+
app:layout_constraintStart_toStartOf="parent"
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137
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+
app:layout_constraintTop_toTopOf="parent">
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138
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+
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139
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+
<LinearLayout
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140
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+
android:id="@+id/contents"
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141
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+
android:layout_width="match_parent"
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142
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+
android:layout_height="wrap_content"
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143
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+
android:orientation="vertical" />
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144
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+
</ScrollView>
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145
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+
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146
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+
<TextView
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147
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+
android:id="@+id/lvSumTitle"
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148
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+
android:layout_width="wrap_content"
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149
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+
android:layout_height="wrap_content"
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150
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+
android:layout_marginEnd="8dp"
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151
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+
android:text="合計金額"
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152
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+
app:layout_constraintBaseline_toBaselineOf="@id/lvYen"
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153
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+
app:layout_constraintEnd_toStartOf="@id/lvSumMoney" />
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154
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+
<TextView
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155
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+
android:id="@+id/lvSumMoney"
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156
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+
android:layout_width="wrap_content"
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157
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+
android:layout_height="wrap_content"
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158
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+
android:layout_marginTop="8dp"
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159
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+
android:layout_marginEnd="8dp"
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160
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+
android:text="12345"
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161
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+
android:textSize="24sp"
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162
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+
app:layout_constraintEnd_toStartOf="@id/lvYen"
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163
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+
app:layout_constraintBottom_toBottomOf="@id/lvYen" />
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164
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+
<TextView
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165
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+
android:id="@+id/lvYen"
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166
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+
android:layout_width="wrap_content"
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167
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+
android:layout_height="wrap_content"
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168
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+
android:layout_marginEnd="8dp"
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169
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+
android:text="円"
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170
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+
app:layout_constraintBottom_toTopOf="@id/addTypes"
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171
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+
app:layout_constraintEnd_toEndOf="parent" />
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172
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+
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173
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+
<RadioGroup
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174
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+
android:id="@+id/addTypes"
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175
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+
android:layout_width="wrap_content"
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176
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+
android:layout_height="wrap_content"
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177
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+
android:layout_marginTop="8dp"
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178
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+
android:orientation="horizontal"
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179
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+
app:layout_constraintBottom_toBottomOf="parent"
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180
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+
app:layout_constraintEnd_toEndOf="parent"
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181
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+
app:layout_constraintStart_toStartOf="parent">
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182
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+
<RadioButton
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183
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+
android:id="@+id/single"
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184
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+
android:layout_width="wrap_content"
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185
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+
android:layout_height="wrap_content"
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186
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+
android:layout_marginTop="8dp"
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187
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+
android:layout_marginBottom="8dp"
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188
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+
android:text="1枚" />
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189
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+
<RadioButton
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190
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+
android:id="@+id/ten"
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191
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+
android:layout_width="wrap_content"
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192
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+
android:layout_height="wrap_content"
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193
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+
android:layout_marginStart="8dp"
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194
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+
android:layout_marginTop="8dp"
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195
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+
android:layout_marginBottom="8dp"
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196
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+
android:text="10枚" />
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197
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+
<RadioButton
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198
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+
android:id="@+id/twenty"
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199
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+
android:layout_width="wrap_content"
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200
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+
android:layout_height="wrap_content"
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201
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+
android:layout_marginStart="8dp"
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202
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+
android:layout_marginTop="8dp"
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203
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+
android:layout_marginBottom="8dp"
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204
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+
android:text="20枚" />
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205
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+
<RadioButton
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206
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+
android:id="@+id/fifty"
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207
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+
android:layout_width="wrap_content"
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208
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+
android:layout_height="wrap_content"
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209
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+
android:layout_marginStart="8dp"
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210
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+
android:layout_marginTop="8dp"
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211
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+
android:layout_marginBottom="8dp"
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212
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+
android:text="50枚" />
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213
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+
</RadioGroup>
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214
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+
</androidx.constraintlayout.widget.ConstraintLayout>
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215
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+
```
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216
|
+
res/layout/money_input.xml
|
|
217
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+
```xml
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|
218
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+
<?xml version="1.0" encoding="utf-8"?>
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219
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+
<androidx.constraintlayout.widget.ConstraintLayout
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|
220
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+
xmlns:android="http://schemas.android.com/apk/res/android"
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221
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+
xmlns:app="http://schemas.android.com/apk/res-auto"
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222
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+
xmlns:tools="http://schemas.android.com/tools"
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223
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+
android:layout_width="match_parent"
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224
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+
android:layout_height="wrap_content">
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|
225
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+
|
|
226
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+
<TextView
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|
227
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+
android:id="@+id/moneyType"
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228
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+
android:layout_width="100dp"
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229
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+
android:layout_height="wrap_content"
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230
|
+
android:layout_marginStart="8dp"
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|
231
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+
android:text="10"
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232
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+
app:layout_constraintBaseline_toBaselineOf="@id/addButton"
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|
233
|
+
app:layout_constraintStart_toStartOf="parent" />
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|
234
|
+
|
|
235
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+
<Button
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|
236
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+
android:id="@+id/subButton"
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|
237
|
+
android:layout_width="50dp"
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|
238
|
+
android:layout_height="50sp"
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|
239
|
+
android:layout_margin="8dp"
|
|
240
|
+
android:insetTop="0dp"
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|
241
|
+
android:insetBottom="0dp"
|
|
242
|
+
android:text="-"
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|
243
|
+
android:textSize="14sp"
|
|
244
|
+
app:layout_constraintEnd_toStartOf="@+id/inputMoneyAmount"
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|
245
|
+
app:layout_constraintStart_toEndOf="@id/moneyType"
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|
246
|
+
app:layout_constraintTop_toTopOf="parent" />
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247
|
+
|
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248
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+
<EditText
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249
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+
android:id="@+id/inputMoneyAmount"
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|
250
|
+
android:layout_width="0dp"
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251
|
+
android:layout_height="wrap_content"
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252
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+
android:layout_marginStart="8dp"
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253
|
+
android:ems="10"
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|
254
|
+
android:hint="硬貨・紙幣の枚数"
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|
255
|
+
android:importantForAutofill="no"
|
|
256
|
+
android:inputType="number"
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|
257
|
+
android:minHeight="48dp"
|
|
258
|
+
android:text="12"
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|
259
|
+
app:layout_constraintBaseline_toBaselineOf="@id/addButton"
|
|
260
|
+
app:layout_constraintEnd_toStartOf="@id/addButton"
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|
261
|
+
app:layout_constraintStart_toEndOf="@id/subButton" />
|
|
262
|
+
|
|
263
|
+
<Button
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|
264
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+
android:id="@+id/addButton"
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|
265
|
+
android:layout_width="50sp"
|
|
266
|
+
android:layout_height="50sp"
|
|
267
|
+
android:layout_margin="8dp"
|
|
268
|
+
android:insetTop="0dp"
|
|
269
|
+
android:insetBottom="0dp"
|
|
270
|
+
android:text="+"
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|
271
|
+
android:textSize="14sp"
|
|
272
|
+
app:layout_constraintEnd_toEndOf="parent"
|
|
273
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+
app:layout_constraintStart_toEndOf="@id/inputMoneyAmount"
|
|
274
|
+
app:layout_constraintTop_toTopOf="parent" />
|
|
275
|
+
</androidx.constraintlayout.widget.ConstraintLayout>
|
|
276
|
+
```
|
3
コード追加
test
CHANGED
|
@@ -147,3 +147,115 @@
|
|
|
147
147
|
}
|
|
148
148
|
}
|
|
149
149
|
```
|
|
150
|
+
---
|
|
151
|
+
ListView に依らず、コードでレイアウトを作ってしまうほうが簡単かもしれません。
|
|
152
|
+
```kotlin
|
|
153
|
+
import androidx.appcompat.app.AppCompatActivity
|
|
154
|
+
import android.os.Bundle
|
|
155
|
+
import android.text.Editable
|
|
156
|
+
import android.text.TextWatcher
|
|
157
|
+
import android.view.LayoutInflater
|
|
158
|
+
import android.view.View
|
|
159
|
+
import android.view.ViewGroup
|
|
160
|
+
import android.widget.*
|
|
161
|
+
import androidx.activity.viewModels
|
|
162
|
+
import androidx.lifecycle.MutableLiveData
|
|
163
|
+
import androidx.lifecycle.ViewModel
|
|
164
|
+
|
|
165
|
+
class MainActivity : AppCompatActivity() {
|
|
166
|
+
override fun onCreate(savedInstanceState: Bundle?) {
|
|
167
|
+
super.onCreate(savedInstanceState)
|
|
168
|
+
setContentView(R.layout.activity_main)
|
|
169
|
+
|
|
170
|
+
val model: AmountsViewModel by viewModels()
|
|
171
|
+
|
|
172
|
+
val contentsView = findViewById<LinearLayout>(R.id.contents)
|
|
173
|
+
for(moneyType in MoneyType.values()) {
|
|
174
|
+
contentsView.addView(createView(contentsView, moneyType, model),
|
|
175
|
+
LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
|
|
176
|
+
ViewGroup.LayoutParams.WRAP_CONTENT))
|
|
177
|
+
}
|
|
178
|
+
|
|
179
|
+
val sumMoney: TextView = findViewById(R.id.lvSumMoney)
|
|
180
|
+
model.sum.observe(this) { total -> sumMoney.setText(total.toString()) }
|
|
181
|
+
|
|
182
|
+
findViewById<RadioGroup>(R.id.addTypes).apply {
|
|
183
|
+
setOnCheckedChangeListener { _, id ->
|
|
184
|
+
when (id) {
|
|
185
|
+
R.id.ten -> model.delta = 10
|
|
186
|
+
R.id.twenty -> model.delta = 20
|
|
187
|
+
R.id.fifty -> model.delta = 50
|
|
188
|
+
else -> model.delta = 1
|
|
189
|
+
}
|
|
190
|
+
}
|
|
191
|
+
check(R.id.single)
|
|
192
|
+
}
|
|
193
|
+
}
|
|
194
|
+
|
|
195
|
+
private fun createView(parent: ViewGroup, moneyType: MoneyType, model: AmountsViewModel): View {
|
|
196
|
+
val view = LayoutInflater.from(parent.context).inflate(R.layout.money_input, parent, false)
|
|
197
|
+
|
|
198
|
+
view.findViewById<TextView>(R.id.moneyType).apply {
|
|
199
|
+
setText(moneyType.value.toString())
|
|
200
|
+
}
|
|
201
|
+
|
|
202
|
+
val inputMoneyAmount = view.findViewById<EditText>(R.id.inputMoneyAmount).apply {
|
|
203
|
+
addTextChangedListener(object : TextWatcher {
|
|
204
|
+
override fun afterTextChanged(p0: Editable?) {
|
|
205
|
+
model.set(moneyType, p0.toString().toLongOrNull() ?: 0L)
|
|
206
|
+
}
|
|
207
|
+
override fun beforeTextChanged(p0: CharSequence?, p1: Int, p2: Int, p3: Int) {}
|
|
208
|
+
override fun onTextChanged(p0: CharSequence?, p1: Int, p2: Int, p3: Int) {}
|
|
209
|
+
})
|
|
210
|
+
setSelectAllOnFocus(true)
|
|
211
|
+
setText(model.amountMap.getOrDefault(moneyType, 0L).toString())
|
|
212
|
+
}
|
|
213
|
+
|
|
214
|
+
view.findViewById<Button>(R.id.subButton).apply {
|
|
215
|
+
setOnClickListener {
|
|
216
|
+
val amount = Math.max(model.get(moneyType) - model.delta, 0)
|
|
217
|
+
inputMoneyAmount.setText(amount.toString())
|
|
218
|
+
}
|
|
219
|
+
}
|
|
220
|
+
|
|
221
|
+
view.findViewById<Button>(R.id.addButton).apply {
|
|
222
|
+
setOnClickListener {
|
|
223
|
+
val amount = model.get(moneyType) + model.delta
|
|
224
|
+
inputMoneyAmount.setText(amount.toString())
|
|
225
|
+
}
|
|
226
|
+
}
|
|
227
|
+
|
|
228
|
+
return view
|
|
229
|
+
}
|
|
230
|
+
}
|
|
231
|
+
|
|
232
|
+
enum class MoneyType(val value: Int) {
|
|
233
|
+
T1(1), T5(5), T10(10), T50(50), T100(100), T500(500), T1000(1000), T5000(5000), T10000(10000)
|
|
234
|
+
}
|
|
235
|
+
|
|
236
|
+
class AmountsViewModel: ViewModel() {
|
|
237
|
+
val amountMap = mutableMapOf<MoneyType,Long>().apply {
|
|
238
|
+
for(moneyType in MoneyType.values()) this.set(moneyType, 0L)
|
|
239
|
+
}
|
|
240
|
+
|
|
241
|
+
fun set(moneyType: MoneyType, amount: Long) {
|
|
242
|
+
amountMap.put(moneyType, amount)
|
|
243
|
+
recalc()
|
|
244
|
+
}
|
|
245
|
+
fun get(moneyType: MoneyType): Long {
|
|
246
|
+
return amountMap.get(moneyType) ?: 0L
|
|
247
|
+
}
|
|
248
|
+
|
|
249
|
+
private fun recalc() {
|
|
250
|
+
var total = 0L
|
|
251
|
+
amountMap.forEach { mapEntry -> //種類*数を足していく。
|
|
252
|
+
total += mapEntry.key.value * mapEntry.value
|
|
253
|
+
}
|
|
254
|
+
sum.value = total
|
|
255
|
+
}
|
|
256
|
+
|
|
257
|
+
val sum = MutableLiveData<Long>()
|
|
258
|
+
|
|
259
|
+
var delta: Int = 1
|
|
260
|
+
}
|
|
261
|
+
```
|
2
コード修正・追記
test
CHANGED
|
@@ -1,5 +1,7 @@
|
|
|
1
1
|
ViewModel や Binding は関係無さそうですのでその辺りを省いて試してみましたが、恐らく「 10000 の行」の EditText を選択・編集しても ListView の選択行が「 1 の行」のままなため、 notifyDataSetChanged で ListView の表示を更新した際に選択行を表示しようとして先頭に戻っているのではないでしょうか。
|
|
2
2
|
EditText (や +/- のボタンも?) にフォーカスが当たった時点で ListView の選択行をその EditView のある行に設定しては如何でしょう。
|
|
3
|
+
|
|
4
|
+
ただ、 notify すると EditText の編集モードが解除されてしまいますので、 notify を起こさずに各データを更新するルートを通すのが良さそうです。
|
|
3
5
|
|
|
4
6
|
試したコードはこちらです。 (kotlin に不慣れな為 "kotlin 的に変 " な個所があるかもしれません。)
|
|
5
7
|
```kotlin
|
|
@@ -23,7 +25,7 @@
|
|
|
23
25
|
val sumMoney: TextView = findViewById(R.id.lvSumMoney)
|
|
24
26
|
|
|
25
27
|
val listView = findViewById<ListView>(R.id.lvItems)
|
|
26
|
-
val adapter = InputAdapter
|
|
28
|
+
val adapter = InputAdapter { sum -> sumMoney.text = sum.toString() }
|
|
27
29
|
listView.adapter = adapter
|
|
28
30
|
|
|
29
31
|
//adapter.registerDataSetObserver(object: DataSetObserver() {
|
|
@@ -49,7 +51,7 @@
|
|
|
49
51
|
}
|
|
50
52
|
}
|
|
51
53
|
|
|
52
|
-
class InputAdapter(val listView: ListView, val sumConsumer: Consumer<Int>? = null) : BaseAdapter() {
|
|
54
|
+
class InputAdapter(val listView: ListView? = null, val sumConsumer: Consumer<Int>? = null) : BaseAdapter() {
|
|
53
55
|
companion object {
|
|
54
56
|
private val moneyTypes = listOf(1, 5, 10, 50, 100, 500, 1000, 2000, 5000, 10000)
|
|
55
57
|
}
|
|
@@ -101,9 +103,9 @@
|
|
|
101
103
|
return (Math.max(get(type) - delta, 0)).also { set(type, it) }
|
|
102
104
|
}
|
|
103
105
|
|
|
104
|
-
private fun setRowFocus(type: Int) {
|
|
106
|
+
//private fun setRowFocus(type: Int) {
|
|
105
|
-
listView.setSelection(getTypePosition(type))
|
|
107
|
+
// listView.setSelection(getTypePosition(type))
|
|
106
|
-
}
|
|
108
|
+
//}
|
|
107
109
|
|
|
108
110
|
private fun getTypePosition(type: Int): Int {
|
|
109
111
|
for(i in 0..moneys.size-1) if(moneys[i].type == type) return i
|
|
@@ -124,9 +126,9 @@
|
|
|
124
126
|
override fun beforeTextChanged(p0: CharSequence?, p1: Int, p2: Int, p3: Int) {}
|
|
125
127
|
override fun onTextChanged(p0: CharSequence?, p1: Int, p2: Int, p3: Int) {}
|
|
126
128
|
})
|
|
127
|
-
setOnFocusChangeListener { v, hasFocus ->
|
|
129
|
+
//setOnFocusChangeListener { v, hasFocus ->
|
|
128
|
-
if(hasFocus) setRowFocus(moneyType.text.toString().toInt())
|
|
130
|
+
// if(hasFocus) setRowFocus(moneyType.text.toString().toInt())
|
|
129
|
-
}
|
|
131
|
+
//}
|
|
130
132
|
setSelectAllOnFocus(true)
|
|
131
133
|
}
|
|
132
134
|
view.findViewById<Button>(R.id.subButton).apply {
|
1
コード追加
test
CHANGED
|
@@ -1,3 +1,147 @@
|
|
|
1
1
|
ViewModel や Binding は関係無さそうですのでその辺りを省いて試してみましたが、恐らく「 10000 の行」の EditText を選択・編集しても ListView の選択行が「 1 の行」のままなため、 notifyDataSetChanged で ListView の表示を更新した際に選択行を表示しようとして先頭に戻っているのではないでしょうか。
|
|
2
2
|
EditText (や +/- のボタンも?) にフォーカスが当たった時点で ListView の選択行をその EditView のある行に設定しては如何でしょう。
|
|
3
3
|
|
|
4
|
+
試したコードはこちらです。 (kotlin に不慣れな為 "kotlin 的に変 " な個所があるかもしれません。)
|
|
5
|
+
```kotlin
|
|
6
|
+
//import android.database.DataSetObserver
|
|
7
|
+
import androidx.appcompat.app.AppCompatActivity
|
|
8
|
+
import android.os.Bundle
|
|
9
|
+
import android.text.Editable
|
|
10
|
+
import android.text.TextWatcher
|
|
11
|
+
import android.view.LayoutInflater
|
|
12
|
+
import android.view.View
|
|
13
|
+
import android.view.ViewGroup
|
|
14
|
+
import android.widget.*
|
|
15
|
+
import java.lang.IllegalArgumentException
|
|
16
|
+
import java.util.function.Consumer
|
|
17
|
+
|
|
18
|
+
class MainActivity : AppCompatActivity() {
|
|
19
|
+
override fun onCreate(savedInstanceState: Bundle?) {
|
|
20
|
+
super.onCreate(savedInstanceState)
|
|
21
|
+
setContentView(R.layout.activity_main)
|
|
22
|
+
|
|
23
|
+
val sumMoney: TextView = findViewById(R.id.lvSumMoney)
|
|
24
|
+
|
|
25
|
+
val listView = findViewById<ListView>(R.id.lvItems)
|
|
26
|
+
val adapter = InputAdapter(listView) { sum -> sumMoney.text = sum.toString() }
|
|
27
|
+
listView.adapter = adapter
|
|
28
|
+
|
|
29
|
+
//adapter.registerDataSetObserver(object: DataSetObserver() {
|
|
30
|
+
// override fun onChanged() {
|
|
31
|
+
// sumMoney.text = adapter.sum().toString()
|
|
32
|
+
// }
|
|
33
|
+
// override fun onInvalidated() {
|
|
34
|
+
// sumMoney.text = "0"
|
|
35
|
+
// }
|
|
36
|
+
//})
|
|
37
|
+
|
|
38
|
+
findViewById<RadioGroup>(R.id.addTypes).apply {
|
|
39
|
+
setOnCheckedChangeListener { _, id ->
|
|
40
|
+
when (id) {
|
|
41
|
+
R.id.ten -> adapter.delta = 10
|
|
42
|
+
R.id.twenty -> adapter.delta = 20
|
|
43
|
+
R.id.fifty -> adapter.delta = 50
|
|
44
|
+
else -> adapter.delta = 1
|
|
45
|
+
}
|
|
46
|
+
}
|
|
47
|
+
check(R.id.single)
|
|
48
|
+
}
|
|
49
|
+
}
|
|
50
|
+
}
|
|
51
|
+
|
|
52
|
+
class InputAdapter(val listView: ListView, val sumConsumer: Consumer<Int>? = null) : BaseAdapter() {
|
|
53
|
+
companion object {
|
|
54
|
+
private val moneyTypes = listOf(1, 5, 10, 50, 100, 500, 1000, 2000, 5000, 10000)
|
|
55
|
+
}
|
|
56
|
+
|
|
57
|
+
private inner class Money(val type: Int, var amount: Int = 0) {
|
|
58
|
+
fun value(): Int = type * amount
|
|
59
|
+
}
|
|
60
|
+
private val moneys = List<Money>(moneyTypes.size) { i -> Money(moneyTypes[i]) }
|
|
61
|
+
var delta: Int = 1
|
|
62
|
+
|
|
63
|
+
override fun getCount(): Int = moneys.size
|
|
64
|
+
override fun getItem(position: Int): Any = moneys[position]
|
|
65
|
+
override fun getItemId(position: Int): Long = 0
|
|
66
|
+
|
|
67
|
+
override fun getView(position: Int, convertView: View?, parent: ViewGroup): View {
|
|
68
|
+
val view: View
|
|
69
|
+
if(convertView == null) {
|
|
70
|
+
view = LayoutInflater.from(parent.context).inflate(R.layout.money_input, parent, false)
|
|
71
|
+
view.tag = ViewHolder(view)
|
|
72
|
+
} else {
|
|
73
|
+
view = convertView
|
|
74
|
+
}
|
|
75
|
+
val tag = view.tag as ViewHolder
|
|
76
|
+
tag.moneyType.setText(moneys[position].type.toString())
|
|
77
|
+
tag.inputMoneyAmount.setText(moneys[position].amount.toString())
|
|
78
|
+
return view
|
|
79
|
+
}
|
|
80
|
+
|
|
81
|
+
fun sum(): Int {
|
|
82
|
+
var sum = 0
|
|
83
|
+
for(money in moneys) sum += money.value()
|
|
84
|
+
return sum
|
|
85
|
+
}
|
|
86
|
+
|
|
87
|
+
private fun set(type: Int, amount: Int): Int {
|
|
88
|
+
moneys[getTypePosition(type)].amount = amount
|
|
89
|
+
//notifyDataSetChanged()
|
|
90
|
+
sumConsumer?.accept(sum())
|
|
91
|
+
return amount
|
|
92
|
+
}
|
|
93
|
+
private fun get(type: Int): Int {
|
|
94
|
+
return moneys[getTypePosition(type)].amount
|
|
95
|
+
}
|
|
96
|
+
|
|
97
|
+
private fun countUp(type: Int): Int {
|
|
98
|
+
return (get(type) + delta).also { set(type, it) }
|
|
99
|
+
}
|
|
100
|
+
private fun countDown(type: Int): Int {
|
|
101
|
+
return (Math.max(get(type) - delta, 0)).also { set(type, it) }
|
|
102
|
+
}
|
|
103
|
+
|
|
104
|
+
private fun setRowFocus(type: Int) {
|
|
105
|
+
listView.setSelection(getTypePosition(type))
|
|
106
|
+
}
|
|
107
|
+
|
|
108
|
+
private fun getTypePosition(type: Int): Int {
|
|
109
|
+
for(i in 0..moneys.size-1) if(moneys[i].type == type) return i
|
|
110
|
+
throw IllegalArgumentException("unknown type: " + type)
|
|
111
|
+
}
|
|
112
|
+
|
|
113
|
+
inner class ViewHolder(view: View) {
|
|
114
|
+
val moneyType: TextView
|
|
115
|
+
val inputMoneyAmount: EditText
|
|
116
|
+
init {
|
|
117
|
+
moneyType = view.findViewById(R.id.moneyType)
|
|
118
|
+
inputMoneyAmount = view.findViewById<EditText>(R.id.inputMoneyAmount).apply {
|
|
119
|
+
addTextChangedListener(object: TextWatcher {
|
|
120
|
+
override fun afterTextChanged(p0: Editable?) {
|
|
121
|
+
val amount = p0.toString().toIntOrNull() ?: 0
|
|
122
|
+
set(moneyType.text.toString().toInt(), amount)
|
|
123
|
+
}
|
|
124
|
+
override fun beforeTextChanged(p0: CharSequence?, p1: Int, p2: Int, p3: Int) {}
|
|
125
|
+
override fun onTextChanged(p0: CharSequence?, p1: Int, p2: Int, p3: Int) {}
|
|
126
|
+
})
|
|
127
|
+
setOnFocusChangeListener { v, hasFocus ->
|
|
128
|
+
if(hasFocus) setRowFocus(moneyType.text.toString().toInt())
|
|
129
|
+
}
|
|
130
|
+
setSelectAllOnFocus(true)
|
|
131
|
+
}
|
|
132
|
+
view.findViewById<Button>(R.id.subButton).apply {
|
|
133
|
+
setOnClickListener {
|
|
134
|
+
inputMoneyAmount.setText(countDown(moneyType.text.toString().toInt()).toString())
|
|
135
|
+
}
|
|
136
|
+
isFocusable = false
|
|
137
|
+
}
|
|
138
|
+
view.findViewById<Button>(R.id.addButton).apply {
|
|
139
|
+
setOnClickListener {
|
|
140
|
+
inputMoneyAmount.setText(countUp(moneyType.text.toString().toInt()).toString())
|
|
141
|
+
}
|
|
142
|
+
isFocusable = false
|
|
143
|
+
}
|
|
144
|
+
}
|
|
145
|
+
}
|
|
146
|
+
}
|
|
147
|
+
```
|