uni-app 之 picker选择器

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uni-app 之 picker选择器

一、普通选择器
二、多列选择器
三、时间选择器
四、日期选择器

一、普通选择器

<template>
    <view>
        <picker @change="bindPickerChange" :value="index" :range="array" range-key="name">
            <view style="padding: 20rpx;background-color: white;">{{ array[index].name }}</view>
        </picker>
    </view>
</template>
<script>
export default {
    data() {
        return {
            array: [{ name: '中国' }, { name: '美国' }, { name: '巴西' }, { name: '日本' }],
            index: 2,
        };
    },
    methods: {
        bindPickerChange: function(e) {
            this.index = e.detail.value;
        }
    }
};
</script>

二、多列选择器

<template>
    <view>
        <picker mode="multiSelector" @columnchange="bindMultiPickerColumnChange" :value="multiIndex" :range="multiArray">
            <view style="background-color: white;">
                {{ multiArray[0][multiIndex[0]] }}，
                {{ multiArray[1][multiIndex[1]] }}，
                {{ multiArray[2][multiIndex[2]] }}
            </view>
        </picker>
    </view>
</template>
<script>
export default {
    data() {
        return {
            multiArray: [['亚洲', '欧洲'], ['中国', '日本'], ['北京', '上海', '广州']],
            multiIndex: [0, 0, 0]
        };
    },
    methods: {
        bindMultiPickerColumnChange: function(e) {
            this.multiIndex[e.detail.column] = e.detail.value;
            switch (e.detail.column) {
                case 0: //拖动第1列
                    switch (this.multiIndex[0]) {
                        case 0:
                            this.multiArray[1] = ['中国', '日本'];
                            this.multiArray[2] = ['北京', '上海', '广州'];
                            break;
                        case 1:
                            this.multiArray[1] = ['英国', '法国'];
                            this.multiArray[2] = ['伦敦', '曼彻斯特'];
                            break;
                    }
                    this.multiIndex.splice(1, 1, 0);
                    this.multiIndex.splice(2, 1, 0);
                    break;
                case 1: //拖动第2列
                    switch (
                        this.multiIndex[0] //判断第一列是什么
                    ) {
                        case 0:
                            switch (this.multiIndex[1]) {
                                case 0:
                                    this.multiArray[2] = ['北京', '上海', '广州'];
                                    break;
                                case 1:
                                    this.multiArray[2] = ['东京', '北海道'];
                                    break;
                            }
                            break;
                        case 1:
                            switch (this.multiIndex[1]) {
                                case 0:
                                    this.multiArray[2] = ['伦敦', '曼彻斯特'];
                                    break;
                                case 1:
                                    this.multiArray[2] = ['巴黎', '马赛'];
                                    break;
                            }
                            break;
                    }
                    this.multiIndex.splice(2, 1, 0);
                    break;
            }
            this.$forceUpdate();
        }
    }
};
</script>

image.png

三、时间选择器

<template>
    <view>
        <picker mode="time" :value="time" :start="minTime" :end=maxTime @change="bindTimeChange">
            <view style="background-color: white;">{{ time }}</view>
        </picker>
    </view>
</template>
<script>
export default {
    data() {
        return {
            time: '12:01',
            minTime:'09:01',
            maxTime:"21:01"
        };
    },
    methods: {
        bindTimeChange: function(e) {
            this.time = e.detail.value;
        }
    }
};
</script>

image.png

四、日期选择器

<template>
    <view>
        <picker mode="date" :value="date" :start="startDate" :end="endDate" @change="bindDateChange">
            <view style="background-color: #07C160;">{{ date }}</view>
        </picker>
    </view>
</template>
<script>
function getDate(type) {
    const date = new Date();

    let year = date.getFullYear();
    let month = date.getMonth() + 1;
    let day = date.getDate();

    if (type === 'start') {
        year = year - 10;
    } else if (type === 'end') {
        year = year + 10;
    }
    month = month > 9 ? month : '0' + month;
    day = day > 9 ? day : '0' + day;

    return `${year}-${month}-${day}`;
}
export default {
    data() {
        return {
            date: getDate({
                format: true
            }),
            startDate: getDate('start'),
            endDate: getDate('end'),
        };
    },
    methods: {
        bindDateChange: function(e) {
            this.date = e.detail.value;
        }
    }
};
</script>