[TIMOB-25970] Android: 'postlayout' event not working for Picker with type Titanium.UI.PICKER_TYPE_DATE

android/modules/ui/res/layout/titanium_ui_date_picker_spinner.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
-<DatePicker xmlns:android="http://schemas.android.com/apk/res/android"
+<ti.modules.titanium.ui.widget.picker.CustomDatePicker xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/titanium_ui_date_picker_spinner"
     android:layout_height="wrap_content"
     android:layout_width="wrap_content"
-    android:datePickerMode ="spinner"/>
+    android:datePickerMode ="spinner"/>

android/modules/ui/src/java/ti/modules/titanium/ui/PickerProxy.java

@@ -679,6 +679,13 @@ public void onDismiss(DialogInterface dialog)
 		if (settings.containsKey("title")) {
 			dialog.setTitle(TiConvert.toString(settings, "title"));
 		}
+		dialog.setOnShowListener(new DialogInterface.OnShowListener() {
+			@Override
+			public void onShow(DialogInterface dialog)
+			{
+				fireEvent(TiC.EVENT_POST_LAYOUT, null, false);
+			}
+		});
 		dialog.show();
 		if (settings.containsKey("okButtonTitle")) {
 			dialog.getButton(DatePickerDialog.BUTTON_POSITIVE).setText(TiConvert.toString(settings, "okButtonTitle"));

android/modules/ui/src/java/ti/modules/titanium/ui/widget/picker/CustomDatePicker.java

@@ -0,0 +1,46 @@
+package ti.modules.titanium.ui.widget.picker;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.widget.DatePicker;
+
+import org.appcelerator.kroll.common.Log;
+import org.appcelerator.titanium.proxy.TiViewProxy;
+import org.appcelerator.titanium.util.TiUIHelper;
+
+public class CustomDatePicker extends DatePicker
+{
+
+	private TiViewProxy proxy = null;
+
+	public void setProxy(TiViewProxy value)
+	{
+		this.proxy = value;
+	}
+
+	public CustomDatePicker(Context context)
+	{
+		super(context);
+	}
+
+	public CustomDatePicker(Context context, AttributeSet attrs)
+	{
+		super(context, attrs);
+	}
+
+	public CustomDatePicker(Context context, AttributeSet attrs, int defStyleAttr)
+	{
+		super(context, attrs, defStyleAttr);
+	}
+
+	@Override
+	protected void onLayout(boolean changed, int left, int top, int right, int bottom)
+	{
+		super.onLayout(changed, left, top, right, bottom);
+		if (this.proxy != null && changed) {
+			TiUIHelper.firePostLayoutEvent(this.proxy);
+		} else {
+			Log.w("Picker", "Proxy not assigned to a native view!");
+		}
+	}
+}

android/modules/ui/src/java/ti/modules/titanium/ui/widget/picker/TiUIDatePicker.java

@@ -17,7 +17,6 @@
 import org.appcelerator.titanium.util.TiConvert;
 import org.appcelerator.titanium.util.TiRHelper;
 import org.appcelerator.titanium.util.TiRHelper.ResourceNotFoundException;
-import org.appcelerator.titanium.util.TiUIHelper;
 import org.appcelerator.titanium.view.TiUIView;
 
 import android.app.Activity;
@@ -42,18 +41,11 @@ public TiUIDatePicker(final TiViewProxy proxy, Activity activity)
 		this(proxy);
 		Log.d(TAG, "Creating a date picker", Log.DEBUG_MODE);
 
-		DatePicker picker;
+		CustomDatePicker picker;
 		// If it is not API Level 21 (Android 5.0), create picker normally.
 		// If not, it will inflate a spinner picker to address a bug.
 		if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
-			picker = new DatePicker(activity) {
-				@Override
-				protected void onLayout(boolean changed, int left, int top, int right, int bottom)
-				{
-					super.onLayout(changed, left, top, right, bottom);
-					TiUIHelper.firePostLayoutEvent(proxy);
-				}
-			};
+			picker = new CustomDatePicker(activity);
 		} else {
 			// A bug where PickerCalendarDelegate does not send events to the
 			// listener on API Level 21 (Android 5.0) for TIMOB-19192
@@ -69,8 +61,9 @@ protected void onLayout(boolean changed, int left, int top, int right, int botto
 				}
 				return;
 			}
-			picker = (DatePicker) activity.getLayoutInflater().inflate(datePickerSpinner, null);
+			picker = (CustomDatePicker) activity.getLayoutInflater().inflate(datePickerSpinner, null);
 		}
+		picker.setProxy(getProxy());
 		setNativeView(picker);
 	}
 

tests/Resources/ti.ui.picker.addontest.js

@@ -0,0 +1,28 @@
+/*
+ * Appcelerator Titanium Mobile
+ * Copyright (c) 2011-Present by Appcelerator, Inc. All Rights Reserved.
+ * Licensed under the terms of the Apache Public License
+ * Please see the LICENSE included with this distribution for details.
+ */
+/* eslint-env mocha */
+/* global Ti */
+/* eslint no-unused-expressions: "off" */
+'use strict';
+var should = require('./utilities/assertions');
+
+describe('Titanium.UI.Picker', function () {
+
+	it('DatePicker postlayout event in layout', function (finish) {
+		var win = Ti.UI.createWindow(),
+			dp = Ti.UI.createPicker({
+				type: Ti.UI.PICKER_TYPE_DATE
+			});
+
+		dp.addEventListener('postlayout', function () {
+			finish();
+		});
+		win.add(dp);
+		win.open();
+	});
+
+});