接下来就让我们来开始学习列表的上拉加载和下拉刷新的实现吧(通过聚合数据平台获取微信新闻)。
1.介绍几个组件
1.1 scroll-view 组件
1.2 image组件
注意:使用竖向滚动时,需要给一个固定高度,通过 WXSS 设置 height。
注意:mode有12种模式,其中3种是缩放模式,9种是裁剪模式。
1.3 Icon组件
iconType: [
‘success
', ‘info'
, ‘warn
', ‘waiting'
, ‘safe_success
', ‘safe_warn'
,
‘success_circle
', ‘success_no_circle'
, ‘waiting_circle
', ‘circle'
, ‘download
',
‘info_circle'
, ‘cancel
', ‘search'
, ‘clear'
]
2.列表的上拉加载和下拉刷新的实现
2.1先来张效果图
2.2逻辑很简单,直接上代码
2.2.1 detail.wxml 布局文件
<
loading
hidden
=
"{{hidden}}"
bindchange
=
"loadingChange"
>
加载中...
</
loading
>
<
scroll-view
scroll-y
=
"true"
style
=
"height: 100%;"
bindscrolltolower
=
"loadMore"
bindscrolltoupper
=
"refesh"
>
<
view
wx:if
=
"{{hasRefesh}}"
style
=
"display: flex;flex-direction: row;align-items: center;align-self: center;justify-content: center;"
>
<
icon
type
=
"waiting"
size
=
"45"
/><
text
>刷新中...</
text
></
view
>
<
view
wx:else
style
=
"display:none"
><
text
></
text
></
view
>
<
view
class
=
"lll"
wx:for
=
"{{list}}"
wx:for-item
=
"item"
bindtap
=
"bindViewTap"
data-title
=
"{{item.title}}"
>
<
image
style
=
" width: 50px;height: 50px;margin: 20rpx;"
src
=
"{{item.firstImg}}"
></
image
>
<
view
class
=
"eee"
>
<
view
style
=
"margin:5px;font-size:8px"
> 标题:{{item.title}}</
view
>
<
view
style
=
"margin:5px;color:red;font-size:6px"
> 来源:{{item.source}}</
view
>
</
view
>
</
view
>
<
view
class
=
"tips1"
>
<
view
wx:if
=
"{{hasMore}}"
style
=
"display: flex;flex-direction: row;align-items: center;align-self: center;justify-content: center;"
>
<
icon
type
=
"waiting"
size
=
"45"
/><
text
>玩命的加载中...</
text
></
view
>
<
view
wx:else><
text
>没有更多内容了</
text
></
view
>
</
view
>
</
scroll-view
>
var
network_util = require(
'../../utils/network_util.js'
);
var
json_util = require(
'../../utils/json_util.js'
);
Page({
data:{
// text:"这是一个页面"
list:[],
dd:
''
,
hidden:
false
,
page: 1,
size: 20,
hasMore:
true
,
hasRefesh:
false
},
onLoad:
function
(options){
var
that =
this
;
network_util._get(url,
function
(res){
that.setData({
list:res.data.result.list,
hidden:
true
,
});
},
function
(res){
console.log(res);
});
},
onReady:
function
(){
// 页面渲染完成
},
onShow:
function
(){
// 页面显示
},
onHide:
function
(){
// 页面隐藏
},
onUnload:
function
(){
// 页面关闭
},
//点击事件处理
bindViewTap:
function
(e) {
console.log(e.currentTarget.dataset.title);
},
//加载更多
loadMore:
function
(e) {
var
that =
this
;
that.setData({
hasRefesh:
true
,});
if
(!
this
.data.hasMore)
return
var
url =
'http://v.juhe.cn/weixin/query?key=f16af393a63364b729fd81ed9fdd4b7d&pno='
+(++that.data.page)+
'&ps=10'
;
network_util._get(url,
function
(res){
that.setData({
list: that.data.list.concat(res.data.result.list),
hidden:
true
,
hasRefesh:
false
,
});
},
function
(res){
console.log(res);
})
},
//刷新处理
refesh:
function
(e) {
var
that =
this
;
that.setData({
hasRefesh:
true
,
});
network_util._get(url,
function
(res){
that.setData({
list:res.data.result.list,
hidden:
true
,
page:1,
hasRefesh:
false
,
});
},
function
(res){
console.log(res);
})
},
})
文章来自深蓝互联http://www.szdbi.com/WEBkaifajishu/164.html转载请注明出处!