回答編集履歴
1
lifecycle-livedata-ktxを使って可読性アップ
answer
CHANGED
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@@ -5,11 +5,10 @@
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5
5
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- ViewModel
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6
6
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7
7
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```kotlin
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8
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-
val tasks =
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8
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+
val tasks = selectFolder
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9
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-
.switchMap(selectFolder) { name ->
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10
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-
name?.let { taskViewModel.getTasksByFolder(it, false) }
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11
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-
}
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12
9
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.nonNull()
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10
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+
.switchMap { getTasksByFolder(it, false) }
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11
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+
.nonNull()
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12
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14
13
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// nullの場合は値を流さないLiveData
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15
14
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fun <T> LiveData<T?>.nonNull(): LiveData<T> {
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