Fix when keyboard show and hide then picker disappear on ios #102

example/PickerTest/index.android.js

 /**
  * react-native-picker example for android
  */
-
-import {
-    AppRegistry
-} from 'react-native';
-
-import PickerTest from './index.js';
-
-AppRegistry.registerComponent('PickerTest', () => PickerTest);
\ No newline at end of file
+import './index.js';
\ No newline at end of file

example/PickerTest/index.ios.js

 /**
  * react-native-picker example for ios
  */
-
-import {
-    AppRegistry
-} from 'react-native';
-
-import PickerTest from './index.js';
-
-AppRegistry.registerComponent('PickerTest', () => PickerTest);
+import './index.js';
\ No newline at end of file

example/PickerTest/index.js

@@ -4,15 +4,24 @@
 
 import React, {Component} from 'react';
 import {
+    AppRegistry,
     View,
     Text,
+    TextInput,
     TouchableOpacity,
     Dimensions
 } from 'react-native';
 
 import Picker from 'react-native-picker';
+import area from './area.json';
 
-function createDateData(){
+class PickerTest extends Component {
+
+    constructor(props, context) {
+        super(props, context);
+    }
+
+    _createDateData() {
         let date = [];
         for(let i=1950;i<2050;i++){
             let month = [];
@@ -46,11 +55,9 @@ function createDateData(){
             date.push(_date);
         }
         return date;
-};
+    }
 
-function createAreaData(callback){
-    fetch('https://raw.githubusercontent.com/beefe/react-native-picker/master/example/PickerTest/area.json').then(res => {
-        res.json().then(area => {
+    _createAreaData() {
         let data = [];
         let len = area.length;
         for(let i=0;i<len;i++){
@@ -65,22 +72,12 @@ function createAreaData(callback){
             _data[area[i]['name']] = city;
             data.push(_data);
         }
-            callback(data);
-        });
-    }, err => {
-        console.log(err);
-    });
-};
-
-export default class PickerTest extends Component {
-
-    constructor(props, context) {
-        super(props, context);
+        return data;
     }
 
     _showDatePicker() {
         Picker.init({
-            pickerData: createDateData(),
+            pickerData: this._createDateData(),
             selectedValue: ['2015年', '12月', '12日'],
             onPickerConfirm: pickedValue => {
                 console.log('date', pickedValue);
@@ -96,9 +93,8 @@ export default class PickerTest extends Component {
     }
 
     _showAreaPicker() {
-        createAreaData(data => {
         Picker.init({
-                pickerData: data,
+            pickerData: this._createAreaData(),
             selectedValue: ['河北', '唐山', '古冶区'],
             onPickerConfirm: pickedValue => {
                 console.log('area', pickedValue);
@@ -111,7 +107,6 @@ export default class PickerTest extends Component {
             }
         });
         Picker.show();
-        });
     }
 
     _toggle() {
@@ -139,7 +134,21 @@ export default class PickerTest extends Component {
                 <TouchableOpacity style={{marginTop: 10, marginLeft: 20}} onPress={this._isPickerShow.bind(this)}>
                     <Text>isPickerShow</Text>
                 </TouchableOpacity>
+                <TextInput 
+                    placeholder="test picker with input"
+                    style={{
+                        height: 40,
+                        borderColor: 'gray',
+                        borderWidth: 1,
+                        marginLeft: 20,
+                        marginRight: 20,
+                        marginTop: 10,
+                        padding: 5
+                    }}
+                />
             </View>
         );
     }
 };
+
+AppRegistry.registerComponent('PickerTest', () => PickerTest);

ios/RCTBEEPickerManager/RCTBEEPickerManager.m

@@ -14,7 +14,7 @@
 
 @property(nonatomic,strong)BzwPicker *pick;
 @property(nonatomic,assign)float height;
-@property(nonatomic,strong) UIWindow * window;
+@property(nonatomic,weak)UIWindow * window;
 
 @end
 
@@ -56,7 +56,7 @@ RCT_EXPORT_METHOD(_init:(NSDictionary *)indic){
         
     }];
     
-    if  ([[UIDevice currentDevice].systemVersion doubleValue] >= 9.0 ){
+    if ([[UIDevice currentDevice].systemVersion doubleValue] >= 9.0 ) {
         self.height=250;
     }else{
         self.height=220;

package.json

 {
   "name": "react-native-picker",
-  "version": "4.0.10",
+  "version": "4.0.11",
   "description": "",
   "main": "index.js",
   "scripts": {