想做个录音机,第一步就卡在麦克风动画这里了.

先上gif.再吐槽.

① 上面gif中声波的动画是个半成品.没有循环播放.在微信小程序的开发文档上找了很久,也没找到循环模式的参数设置.用setInterval()并不执行动画.我在微信小程序文档 动画最下面找到这么一行字.这个锅是不是可以甩出去了?

ps:如果有同学能实现动画循环,一定告诉我.

② 麦克风里面是个帧动画.没有前端的基础,只能用非主流的办法凑合了.

用wx:if{{}}判断js中定义的值是不是等于图片对应的数字来控制图片的显示和隐藏.css中应该有更好的方法.我css基础不牢,就不说了.

上代码:

1.index.wxml

<!--index.wxml--> <view class="voice-style" bindtap="startSpeak"> <image class="bg-style" src="../../images/voice_icon_speaking_bg_normal.png" ></image> <image class="bg-style" animation="{{spreakingAnimation}}" src="../../images/voice_video_loading_0.png"></image> <image class="bg-style" animation="{{spreakingAnimation_1}}" src="../../images/voice_video_loading_0.png"></image> <image class="bg-style" animation="{{spreakingAnimation_2}}" src="../../images/voice_video_loading_0.png"></image> <image class="sound-style" src="../../images/voice_icon_speech_sound_1.png" ></image> <image wx:if="{{j==2}}" class="sound-style" src="../../images/voice_icon_speech_sound_2.png" ></image> <image wx:if="{{j==3}}" class="sound-style" src="../../images/voice_icon_speech_sound_3.png" ></image> <image wx:if="{{j==4}}" class="sound-style" src="../../images/voice_icon_speech_sound_4.png" ></image> <image wx:if="{{j==5}}"class="sound-style" src="../../images/voice_icon_speech_sound_5.png" ></image> </view>

2.index.js

//index.js //获取应用实例 var app = getApp() Page({ data: { spreakingAnimation: {},//放大动画 j: 1,//帧动画初始图片 isSpeaking: false,//是否在录音状态 }, onLoad: function () { }, //点击开始说话 startSpeak: function () { var _this = this; if (!this.data.isSpeaking) { speaking.call(this); this.setData({ isSpeaking: true }) } else { //去除帧动画循环 clearInterval(this.timer) this.setData({ isSpeaking: false, j: 1 }) } }, }) function speaking() { //话筒帧动画 var i = 1; this.timer = setInterval(function () { i++; i = i % 5; _this.setData({ j: i }) return }, 200); //波纹放大,淡出动画 var _this = this; var animation = wx.createAnimation({ duration: 1000 }) animation.opacity(0).scale(3, 3).step();//修改透明度,放大 this.setData({ spreakingAnimation: animation.export() }) setTimeout(function(){ //波纹放大,淡出动画 var animation = wx.createAnimation({ duration: 1000 }) animation.opacity(0).scale(3, 3).step();//修改透明度,放大 _this.setData({ spreakingAnimation_1: animation.export() }) },250) setTimeout(function(){ //波纹放大,淡出动画 var animation = wx.createAnimation({ duration: 1000 }) animation.opacity(0).scale(3, 3).step();//修改透明度,放大 _this.setData({ spreakingAnimation_2: animation.export() }) },500) }

3.index.wxss

/**index.wxss**/ .voice-style { margin-top: 400px; display: flex; position: relative; flex-direction: column; align-items: center; } .bg-style { position: absolute; width: 100px; height: 100px; } .sound-style{ position: absolute; width: 37.6px; height: 60px; margin-top: 20px; }

demo代码下载

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