react-native-picker

解决android切换后台，picker销毁

Documentation

Params

|Key | Type | Default| Support | Description | | --- | --- | ---- | ------ | ----------- | |isLoop | Boolean | false | Android | | |pickerTextEllipsisLen | number | 6 | Android | | |pickerConfirmBtnText | string | confirm | iOS/Android | | |pickerCancelBtnText | string | cancel | iOS/Android | | |pickerTitleText | string | pls select | iOS/Android | | |pickerConfirmBtnColor | array | [1, 186, 245, 1] | iOS/Android | | |pickerCancelBtnColor | array | [1, 186, 245, 1] | iOS/Android | | |pickerTitleColor | array | [20, 20, 20, 1] | iOS/Android | | |pickerToolBarBg | array | [232, 232, 232, 1] | iOS/Android | | |pickerBg | array | [196, 199, 206, 1] | iOS/Android | | |pickerToolBarFontSize | number | 16 | iOS/Android | | |wheelFlex | array | [1, 1, 1] | iOS/Android | | |pickerFontSize | number | 16 | iOS/Android | | |pickerFontColor | array | [31, 31, 31, 1] | iOS/Android | | |pickerFontFamily | string | | iOS/Android | | |pickerRowHeight | number | 24 | iOS | | |pickerData | array | | iOS/Android | | |selectedValue | array | | iOS/Android | | |onPickerConfirm | function| | iOS/Android | | |onPickerCancel | function| | iOS/Android | | |onPickerSelect | function| | iOS/Android | |

Methods

|Key | Support | Description | | --- | ---- | ----------- | |init | iOS/Android |init and pass parameters to picker | |toggle | iOS/Android |show or hide picker | |show | iOS/Android |show picker | |hide | iOS/Android |hide picker | |select | iOS/Android |select a row | |isPickerShow | iOS/Android |get status of picker, return a boolean |

Usage

Step 1 - install

	npm install react-native-picker --save

Step 2 - link

	react-native link

Step 3 - import and use in project

import Picker from 'react-native-picker';
let data = [];
for(var i=0;i<100;i++){
    data.push(i);
}

Picker.init({
    pickerData: data,
    selectedValue: [59],
    onPickerConfirm: data => {
        console.log(data);
    },
    onPickerCancel: data => {
        console.log(data);
    },
    onPickerSelect: data => {
        console.log(data);
    }
});
Picker.show();
	

Integration With Existing Apps (iOS)

The Podfile will like below:

platform :ios, '8.0'
target 'YourTarget' do
    pod 'React', :path => '../YOUR_REACT_NATIVE_PROJECT/node_modules/react-native', :subspecs => [
    'Core',
    ...
    ]
    pod 'Picker', :path => '../YOUR_REACT_NATIVE_PROJECT/node_modules/react-native-picker'
end

After you have updated the Podfile of the existing app, you can install react-native-picker like below:

$ pod install

Notice

support two modes:

1. parallel: such as time picker, wheels have no connection with each other

2. cascade: such as date picker, address picker .etc, when front wheel changed, the behind wheels will all be reset

parallel:

• single wheel:

pickerData = [1,2,3,4];
selectedValue = 3;

• two or more wheel:

pickerData = [
    [1,2,3,4],
    [5,6,7,8],
    ...
];
selectedValue = [1, 5];

cascade:

• two wheel

pickerData = [
    {
        a: [1, 2, 3, 4]
    },
    {
        b: [5, 6, 7, 8]
    },
    ...
];
selectedValue = ['a', 2];

• three wheel

pickerData = [
    {
        a: [
            {
                a1: [1, 2, 3, 4]
            },
            {
                a2: [5, 6, 7, 8]
            },
            {
                a3: [9, 10, 11, 12]
            }
        ]
    },
    {
        b: [
            {
                b1: [11, 22, 33, 44]
            },
            {
                b2: [55, 66, 77, 88]
            },
            {
                b3: [99, 1010, 1111, 1212]
            }
        ]
    },
    {
        c: [
            {
                c1: ['a', 'b', 'c']
            },
            {
                c2: ['aa', 'bb', 'cc']
            },
            {
                c3: ['aaa', 'bbb', 'ccc']
            }
        ]
    },
    ...
]

For pure javascript version -> v3.0.5