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回调中的自定义事件无法执行 #1693

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xuxiaoxiao312 opened this issue Dec 26, 2018 · 3 comments
Closed

回调中的自定义事件无法执行 #1693

xuxiaoxiao312 opened this issue Dec 26, 2018 · 3 comments
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@xuxiaoxiao312
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问题描述
在组件中的Taro.chooseImage回调中自定义事件this.props.onUpdate(),父组件没有响应
复现步骤
子组件 Demo

    chooseImage(){
        let vm = this
        let {images, maxNum,name} = this.props
        Taro.chooseImage({
            count: maxNum - images.length,
            sizeType: ['original', 'compressed'],
            sourceType: ['album', 'camera'],
            success: function (res) {
                vm.props.onUpdate({name:vm.props.name,value:res.tempFilePaths})
            }
        })
    }

父组件

 updateForm(e){
   console.log(e)
 }
  render(){
      let {form} = this.state
      return (
             <Demo maxNum={2}
               images={form.certImage} 
               name='certImage' 
               onUpdate={this.updateForm}></Demo>
      )
  }

如果我在子组件回调中换一种写法,在父组件就可以正常调用并获得数据

    test(images){
            this.props.onUpdate({name:this.props.name,value:images})
    }
    chooseImage(){
        let vm = this
        let {images, maxNum,name} = this.props
        Taro.chooseImage({
            count: maxNum - images.length,
            sizeType: ['original', 'compressed'],
            sourceType: ['album', 'camera'],
            success: function (res) {
               vm.test(res.tempFilePaths)
            }
        })
    }

期望行为
当子组件选择完图片后父组件应该执行this.updateForm并返回参数

系统信息
👽 Taro v1.2.0

Taro CLI 1.2.0 environment info:
System:
OS: macOS 10.14.1
Shell: 3.2.57 - /bin/bash
Binaries:
Node: 8.12.0 - /usr/local/bin/node
Yarn: 1.10.1 - /usr/local/bin/yarn
npm: 6.4.1 - /usr/local/bin/npm

  • 报错平台 weapp
@taro-bot
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taro-bot bot commented Dec 26, 2018

欢迎提交 Issue~

如果你提交的是 bug 报告,请务必遵循 Issue 模板的规范,尽量用简洁的语言描述你的问题,最好能提供一个稳定简单的复现。🙏🙏🙏

如果你的信息提供过于模糊或不足,或者已经其他 issue 已经存在相关内容,你的 issue 有可能会被关闭。

Good luck and happy coding~

@yuche
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Contributor

yuche commented Dec 26, 2018

#1630 (comment)

把接下来的相关评论也看完

@taro-bot
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taro-bot bot commented Dec 26, 2018

CC @yuche

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