Add UIPickerViewPlayground.

DeclarativeHub · Feb 17, 2019 · ec83456 · ec83456
1 parent 1ea5fb6
commit ec83456
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diff --git a/...round-iOS.playground/Pages/UIPickerView+ObservableArray2D.xcplaygroundpage/Contents.swift b/...round-iOS.playground/Pages/UIPickerView+ObservableArray2D.xcplaygroundpage/Contents.swift
@@ -0,0 +1,49 @@
+//: [Previous](@previous)
+
+import Foundation
+import PlaygroundSupport
+import UIKit
+import Bond
+import ReactiveKit
+
+let pickerView = UIPickerView()
+pickerView.frame.size = CGSize(width: 300, height: 300)
+pickerView.backgroundColor = .white
+
+// Note: Open the assistant editor to see the table view
+PlaygroundPage.current.liveView = pickerView
+PlaygroundPage.current.needsIndefiniteExecution = true
+
+let data = MutableObservableArray2D(
+    Array2D<String, String>(
+        sectionsWithItems: [
+            ("Feet", ["0 ft", "1 ft", "2 ft", "3 ft", "4 ft", "5 ft", "6 ft", "7 ft", "8 ft", "9 ft"]),
+            ("Inches", ["0 in", "1 in", "2 in", "3 in", "4 in", "5 in", "6 in", "7 in", "8 in", "9 in", "10 in", "11 in", "12 in"])
+        ]
+    )
+)
+
+data.bind(to: pickerView)
+
+// Handle cell selection
+let selectedRow = pickerView.reactive.selectedRow
+
+selectedRow.observeNext { (row, component) in
+    print("selected", row, component)
+}
+
+let selectedPair = selectedRow.scan([0, 0]) { (pair, rowAndComponent) -> [Int] in
+    var pair = pair
+    pair[rowAndComponent.1] = rowAndComponent.0
+    return pair
+}
+
+selectedPair.observeNext { (pair) in
+    print("selected indices", pair)
+    let items = pair.enumerated().map {
+        data[[$0.offset, $0.element]].value.item!
+    }
+    print("selected items", items)
+}
+
+//: [Next](@next)
diff --git a/Playground-iOS.playground/contents.xcplayground b/Playground-iOS.playground/contents.xcplayground
@@ -7,5 +7,6 @@
         <page name='UITableView+ObservableArray2D'/>
         <page name='UICollectionView+ObservableArray2D'/>
         <page name='Key Value Observing'/>
+        <page name='UIPickerView+ObservableArray2D'/>
     </pages>
 </playground>