之前做过一个picker的三级联动功能，这里分享代码给大家

具体代码：

// An highlighted block

{{ areaname }}

{{ buildingname }}

{{ floorname }}

import Vue from 'vue';

export default {

data() {

return {

multiArray: [['1', '2', '3', '4', '5', '6', '7'], ['1舍', '2舍', '3舍', '4舍'], ['111楼', '112楼', '113楼', '114楼']],

multiIndex: [0, 0, 0],

tabindex: 0,

ydindex: 0,

firstid: '0',

secondid: '0',

thirdid: '0',

areaname: '1',

dengswitchvalue: '',

ktswitchvalue: '',

buildingname: '1舍',

floorname: '111楼',

nowitem: '1-1舍-111楼',

column1data: [

//每个院部的楼栋

['11舍', '12舍', '13舍', '14舍'],

// ['21舍', '22舍', '23舍', '24舍'],

['21舍'],

// ['31舍', '32舍', '33舍', '34舍'],

['31舍', '32舍'],

['41舍', '42舍', '43舍', '44舍'],

['51舍', '52舍', '53舍', '54舍'],

['61舍', '62舍', '63舍', '64舍'],

['71舍', '72舍', '73舍', '74舍']

],

hangdata: [

//每一栋包含楼层

[['111楼', '112楼', '113楼', '114楼'], ['121楼', '122楼', '123楼'], ['131楼', '132楼', '133楼', '134楼'], ['141楼', '142楼', '143楼', '144楼']],

// [['211楼', '212楼', '213楼', '214楼'], ['221楼', '222楼', '223楼', '224楼'], ['231楼', '232楼', '233楼', '234楼'], ['241楼', '242楼', '243楼', '244楼']],

[['211楼', '212楼', '213楼', '214楼']],

// [['311楼', '312楼', '313楼', '314楼'], ['321楼', '322楼', '323楼', '324楼'], ['331楼', '332楼', '333楼', '334楼'], ['341楼', '342楼', '343楼', '344楼']],

[['311楼', '312楼', '313楼', '314楼'], ['321楼', '322楼', '323楼']],

[['411楼', '412楼', '413楼', '414楼'], ['421楼', '422楼', '423楼', '424楼'], ['431楼', '432楼', '433楼', '434楼'], ['441楼', '442楼', '443楼', '444楼']],

[['511楼', '512楼', '513楼', '514楼'], ['521楼', '522楼', '523楼'], ['531楼', '532楼', '533楼', '534楼'], ['541楼', '542楼', '543楼', '544楼']],

[['611楼', '612楼', '613楼', '614楼'], ['621楼', '622楼', '623楼', '624楼'], ['631楼', '632楼', '633楼', '634楼'], ['641楼', '642楼', '643楼', '654楼']],

[['711楼', '712楼'], ['721楼', '722楼', '723楼'], ['731楼', '732楼', '733楼', '734楼'], ['741楼', '742楼', '743楼', '744楼']]

]

};

},

methods: {

bindMultiPickerChange(e) {

this.multiIndex = e.detail.value;

this.areaname = this.multiArray[0][e.detail.value[0]];

this.buildingname = this.multiArray[1][e.detail.value[1]];

this.floorname = this.multiArray[2][e.detail.value[2]];

this.nowitem = this.multiArray[0][e.detail.value[0]] + '-' + this.multiArray[1][e.detail.value[1]] + '-' + this.multiArray[2][e.detail.value[2]];

console.log('选择了：' + this.nowitem);

},

bindMultiPickerColumnChange(e) {

switch (e.detail.column) {

case 0:

this.firstid = e.detail.value;

if (typeof this.hangdata[this.firstid][this.secondid] == 'undefined') {

this.secondid = 0; //当第二列数据没有上一个second列的情况

}

switch (e.detail.value) {

case this.firstid:

Vue.set(this.multiArray, 1, this.column1data[this.firstid]);

Vue.set(this.multiArray, 2, this.hangdata[this.firstid][this.secondid]); //为了对应第三列关系

break;

default:

break;

}

break;

case 1:

this.secondid = e.detail.value;

if (typeof this.hangdata[this.firstid][this.secondid][this.thirdid] == 'undefined') {

this.thirdid = 0; //当第三列数据没有上一个列的情况

}

switch (this.firstid) {

case this.firstid:

switch (this.secondid) {

case this.secondid:

Vue.set(this.multiArray, 2, this.hangdata[this.firstid][this.secondid]);

break;

default:

break;

}

break;

default:

break;

}

case 2:

this.thirdid = e.detail.value;

break;

default:

break;

}

}

}

};

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