我的数组设计（因为我项目中有几个分类，如果是一类商品把type去掉，只存的浏览数组的索引）
browse: [{
type:
'附近棋牌',
content: [{
index:
2,
index2:
0 }] },
{
type:
'精彩图片',
content: [{
index:
1,
index2:
0 }, {
index:
0,
index2:
0 }] },
{
type:
'资讯',
content: [{
index:
0,
index2:
0 }, {
index:
1,
index2:
1 }] },
{
type:
'直播',
content: [{
index:
2,
index2:
1 }, {
index:
0,
index2:
1 }] }],
下边以资讯为例详细介绍一下
一、这是浏览足迹页面的逻辑，显示可以根据自己的需求编写，，，遍历zixun()返回的数组就好了
found = ()
=> {
for (
let
i =
0;
i <
t(
'userinfo').
length;
i++) {
if (
this.
state.
username ===
t(
'userinfo')[
i].
username) {
//通过query()方法获取登录的用户名进行判断
this.
setState({
panduan:
true,
})
return
t(
'userinfo')[
i].
browse
}
}
}
//判断有没有找到用户
founds = ()
=> {
for (
let
i =
0;
i <
t(
'userinfo').
length;
i++) {
if (
this.
state.
username ===
t(
'userinfo')[
i].
username) {
return
t(
'userinfo')[
i].
browse
}
// else { }
}
}
//返回该用户的浏览数组
zixun = ()
=> {
const
arr = []
t(
'zixun').
map((
item,
Fistindex)
=> {
return (
this.
state.
panduan ?
this.
founds().
map((
ite,
ind)
=> {
return (
ind ===
2 ?
ite.
content.
map((
it,
ind)
=> {
return (
Fistindex ===
it.
index ?
item.
contentss.
map((
itm,
inds)
=> {
return (
inds ===
it.
index2 ?
arr
.push(
itm) :
null
)
})
:
null
)
})
// console.log(ite)
:
null
)
}) :
null
)
})
return
arr
}
//把通过索引把资讯对象放在一个临时数组中
二、资讯详情页面的逻辑
found() {
for (
let
i =
0;
i <
t(
'userinfo').
length;
i++) {
if (
this.
state.
username ===
t(
'userinfo')[
i].
username) {
return
t(
'userinfo')[
i].
browse
}
else { }
}
}
panduanB = ()
=> {
for (
let
i =
0;
i <
this.
found().
length;
i++) {
if (
this.
found()[
i].
type ===
t(
'tab2')) {
//通过type判断
for (
let
j =
0;
j <
this.
found()[
i].
content.
length;
j++) {
if (
this.
found()[
i].
content[
j].
index ===
this.
props.
navigation.
state.
params.
index) {
this.
setState({
pan:
j
//如果存在记录下标，有助于删除
})
return
false
}
}
}
}
return
true
}
tianjia = ()
=> {
for (
let
i =
0;
i <
this.
found().
length;
i++) {
if (
this.
found()[
i].
type ===
t(
'tab2')) {
if (
this.
panduanB() ===
true) {
obj = {
index:
this.
props.
navigation.
state.
params.
index1,
type:
t(
'tab2'),
index2:
this.
props.
navigation.
state.
params.
index
}
this.
found()[
i].
content
.unshift(
obj)
//没有直接添加
// alert('成功添加')
// console.log('成功添加', this.found()[i].content.length)
}
else {
obj = {
index:
this.
props.
navigation.
state.
params.
index1,
type:
t(
'tab2'),
index2:
this.
props.
navigation.
state.
params.
index
}
// alert('之前存在') 如果存在，先把之前的删除，再在头部添加
this.
found()[
i].
content
.splice(
this.
state.
pan,
1)
this.
found()[
i].
content
.unshift(
obj)
}
}
}
}