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トップAndroidに関する質問when の中身をまとめて少なくしたい

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回答編集履歴

3

2022/01/15 17:37

投稿

jimbe
jimbe

スコア12648

test CHANGED
@@ -1,83 +1,48 @@
1
1
  メソッドにする、itemId と各リソースIDとの関連をテーブル化する等、やり方は色々と思います。
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2
 
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+ ```kotlin
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+ class ChampionViews(val imageView: ImageView, val textView: TextView) {
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+ private class Preset(val imageResId: Int, val stringResId: Int, val text: String?)
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+ private val presetMap: MutableMap<Int, Preset> = HashMap()
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+ fun putPreset(key: Int, imageResId: Int, strResId: Int): ChampionViews {
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+ presetMap[key] = Preset(imageResId, strResId, null)
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+ return this
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+ }
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+ fun putPreset(key: Int, imageResId: Int, str: String): ChampionViews {
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+ presetMap[key] = Preset(imageResId, 0, str)
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+ return this
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+ }
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+ fun selectPreset(key: Int): Boolean {
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+ val preset = presetMap[key] ?: return false
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+ imageView.setImageResource(preset.imageResId)
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+ if(preset.stringResId == 0) {
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+ textView.text = preset.text
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+ } else {
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+ textView.setText(preset.stringResId)
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+ }
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+ return true
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+ }
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+ }
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+ class MainActivity : AppCompatActivity() {
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- View も纏めて管理するならこんな風にも。
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+ lateinit var championViews: ChampionViews
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+ override fun onCreate(savedInstanceState: Bundle?) {
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+ super.onCreate(savedInstanceState)
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- ```kotlin
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+ setContentView(R.layout.activity_main)
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- class ChampionViews(private val imageView: ImageView, private val textView: TextView) {
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+ championViews = ChampionViews(findViewById(R.id.championsImage), findViewById(R.id.championsText))
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-
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+ .putPreset(R.id.home, R.drawable.icon, "")
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+ .putPreset(R.id.Aatrox, R.drawable.aatrox, R.string.Aatrox_text)
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+ .putPreset(R.id.Ahri, R.drawable.ahri, R.string.Ahri_text)
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- private class MenuValue(val imageId: Int, val stringId: Int)
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+ .putPreset(R.id.Akali, R.drawable.akali, R.string.Akali_text)
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-
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- private val menuMap: MutableMap<Int, MenuValue> = HashMap()
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-
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-
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-
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- fun putMenuValue(menuId: Int, imageId: Int, stringId: Int): ChampionViews {
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-
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- menuMap[menuId] = MenuValue(imageId, stringId)
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-
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- return this
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+ //...
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-
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  }
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-
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-
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- fun setViews(menuId: Int): Boolean {
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+ override fun onOptionsItemSelected(item: MenuItem): Boolean {
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-
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- val value = menuMap[menuId] ?: return false
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-
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- imageView.setImageResource(value.imageId)
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+ return if(championViews.selectPreset(item.itemId)) true
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-
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- textView.setText(value.stringId)
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+ else super.onOptionsItemSelected(item)
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-
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- return true
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-
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  }
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-
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  }
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-
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-
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-
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- class MainActivity : AppCompatActivity() {
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-
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- lateinit var championViews: ChampionViews
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-
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-
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-
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- override fun onCreate(savedInstanceState: Bundle?) {
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-
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- super.onCreate(savedInstanceState)
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-
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- setContentView(R.layout.activity_main)
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-
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-
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-
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- championViews = ChampionViews(findViewById(R.id.championsImage), findViewById(R.id.championsText))
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-
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- .putMenuValue(R.id.home, R.drawable.icon, R.string.home_text) //R.string.home_text を "" として定義
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-
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- .putMenuValue(R.id.Aatrox, R.drawable.aatrox, R.string.Aatrox_text)
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-
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- .putMenuValue(R.id.Ahri, R.drawable.ahri, R.string.Ahri_text)
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-
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- .putMenuValue(R.id.Akali, R.drawable.akali, R.string.Akali_text)
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-
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- //...
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-
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- }
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-
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-
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-
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- override fun onOptionsItemSelected(item: MenuItem): Boolean {
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-
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- return if(championViews.setViews(item.itemId)) true
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-
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- else super.onOptionsItemSelected(item)
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-
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- }
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-
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- }
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-
83
48
  ```

2

追記

2022/01/04 09:58

投稿

jimbe
jimbe

スコア12648

test CHANGED
@@ -1,6 +1,8 @@
1
1
  メソッドにする、itemId と各リソースIDとの関連をテーブル化する等、やり方は色々と思います。
2
2
 
3
3
 
4
+
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+ View も纏めて管理するならこんな風にも。
4
6
 
5
7
  ```kotlin
6
8
 

1

コード追加

2022/01/04 09:58

投稿

jimbe
jimbe

スコア12648

test CHANGED
@@ -1 +1,81 @@
1
1
  メソッドにする、itemId と各リソースIDとの関連をテーブル化する等、やり方は色々と思います。
2
+
3
+
4
+
5
+ ```kotlin
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+
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+ class ChampionViews(private val imageView: ImageView, private val textView: TextView) {
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+
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+ private class MenuValue(val imageId: Int, val stringId: Int)
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+
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+ private val menuMap: MutableMap<Int, MenuValue> = HashMap()
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+
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+
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+
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+ fun putMenuValue(menuId: Int, imageId: Int, stringId: Int): ChampionViews {
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+
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+ menuMap[menuId] = MenuValue(imageId, stringId)
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+
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+ return this
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+
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+ }
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+
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+
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+
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+ fun setViews(menuId: Int): Boolean {
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+
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+ val value = menuMap[menuId] ?: return false
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+
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+ imageView.setImageResource(value.imageId)
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+
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+ textView.setText(value.stringId)
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+
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+ return true
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+
35
+ }
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+
37
+ }
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+
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+
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+
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+ class MainActivity : AppCompatActivity() {
42
+
43
+ lateinit var championViews: ChampionViews
44
+
45
+
46
+
47
+ override fun onCreate(savedInstanceState: Bundle?) {
48
+
49
+ super.onCreate(savedInstanceState)
50
+
51
+ setContentView(R.layout.activity_main)
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+
53
+
54
+
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+ championViews = ChampionViews(findViewById(R.id.championsImage), findViewById(R.id.championsText))
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+
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+ .putMenuValue(R.id.home, R.drawable.icon, R.string.home_text) //R.string.home_text を "" として定義
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+
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+ .putMenuValue(R.id.Aatrox, R.drawable.aatrox, R.string.Aatrox_text)
60
+
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+ .putMenuValue(R.id.Ahri, R.drawable.ahri, R.string.Ahri_text)
62
+
63
+ .putMenuValue(R.id.Akali, R.drawable.akali, R.string.Akali_text)
64
+
65
+ //...
66
+
67
+ }
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+
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+
70
+
71
+ override fun onOptionsItemSelected(item: MenuItem): Boolean {
72
+
73
+ return if(championViews.setViews(item.itemId)) true
74
+
75
+ else super.onOptionsItemSelected(item)
76
+
77
+ }
78
+
79
+ }
80
+
81
+ ```