微信小程序中的下拉刷新,上拉加载的功能很常见,目前我知道的有两种可行的方法,一是scroll-view,二是整个页面刷新.今天说说第一种,自己造轮子,难免有些瑕疵,日后慢慢完善.
上gif:
1.下拉刷新,在滑动到顶部时,bindscrolltoupper被调用,根据自己的业务逻辑请求即可.我的demo只是随机换了个关键字.
2.上拉加载,在滑动到底部时,bindscrolltolower被调用,我这里是页数加一,根据自己的业务逻辑修改,然后将获取到的集合添加到scroll-view的数据集合里即可.
上代码:
1.index.js
if (thisdatarefreshing) return;
thissetData({ refreshing: true });
updateRefreshIconcall(this);
var _this = this;
var i = Mathrandom() //获得0-1的随机数
i = Mathceil(i 10) //乘以10并向上去整
var words = ['龙','一','万','千','浩','金','得','而','可','人'];
var word = words[i];
wxrequest({
url: 'http://apiavatardatacn/ChengYu/Search?key=77f072d28eb141c8b6dda145ca364b92&keyWord=' + word,complete: function (res) {
if (resdatareason == 'Succes') {
setTimeout(function () {
_thissetData({
words: resdataresult
})
},2000)
}
setTimeout(function () {
_thissetData({
refreshing: false
})
},2500)
}
})
},start: function (e) {
var startPoint = etouches[0]
var clientY = startPointclientY;
thissetData({
clientY: clientY,refreshHeight: 0
})
},end: function (e) {
var endPoint = echangedTouches[0]
var y = (endPointclientY - thisdataclientY) 6;
if (y > 50) {
y = 50;
}
thissetData({
refreshHeight: y
})
},move: function (e) {
consolelog("下拉滑动了")
}
})
thissetData({ refreshing: true });
updateRefreshIconcall(this);
var _this = this;
var i = Mathrandom() //获得0-1的随机数
i = Mathceil(i 10) //乘以10并向上去整
var words = ['龙','一','万','千','浩','金','得','而','可','人'];
var word = words[i];
wxrequest({
url: 'http://apiavatardatacn/ChengYu/Search?key=77f072d28eb141c8b6dda145ca364b92&keyWord=' + word,complete: function (res) {
if (resdatareason == 'Succes') {
setTimeout(function () {
_thissetData({
words: resdataresult
})
},2000)
}
setTimeout(function () {
_thissetData({
refreshing: false
})
},2500)
}
})
},start: function (e) {
var startPoint = etouches[0]
var clientY = startPointclientY;
thissetData({
clientY: clientY,refreshHeight: 0
})
},end: function (e) {
var endPoint = echangedTouches[0]
var y = (endPointclientY - thisdataclientY) 6;
if (y > 50) {
y = 50;
}
thissetData({
refreshHeight: y
})
},move: function (e) {
consolelog("下拉滑动了")
}
})
/**
- 旋转上拉加载图标
*/
function updateRefreshIcon() {
var deg = 0;
var _this = this;
consolelog('旋转开始了')
var animation = wxcreateAnimation({
duration: 1000
});
var timer = setInterval(function () {
if (!_thisdatarefreshing)
clearInterval(timer);
animationrotateZ(deg)step();//在Z轴旋转一个deg角度
deg += 360;
_thissetData({
refreshAnimation: animationexport()
})
},1000);
}
2.index.wxml
3.index.wxss
