1、单文件上传（选择图片后直接上传）
<ImagePickerfiles={files}length={1}disableDelete={true}onChange={this.onChange}selectable={files.length==0}multiple={false}/> onChange = (files, type, index) => {const { dispatch } = this.props;if (type == 'add') {var file = files[files.length - 1].filelet formData = new FormData();formData.append("file", file);//files[files.length - 1].url = '../../../../src/white.png'this.setState({files,animating:true},()=>{dispatch({type:'user/fetchChangeAvatar',payload:formData,callback:(res)=>{this.setState({avatar:res.data.url,animating:false})}})})} else {this.setState({files});}}2、多文件上传（正常选择图片，点击提交时上传图片，后台返回图片路径的字符串并以逗号间隔，再进行其他保存操作）
<ImagePickerfiles={files}onChange={this.onImgChange}length={3}selectable={files.length < 3}multiple={true}/>
onImgChange = (files, type, index) => {if(type=='add'){if(files.length>3){Toast.fail('上传图片不能大于3张',1);return ;}this.setState({ files})}else{this.setState({ files })}
addComment = () => {const { dispatch, match, form } = this.props;//console.log(this.props)const alert = Modal.alert;form.validateFields((error, fieldsValue) => {if (error) {Toast.fail('评论内容不能为空！！', 1)return;}alert('发布评论', '您确定退出发布吗?', [{ text: '取消', onPress: () => console.log('cancel') },{text: '确定', onPress: () => {if(this.state.files.length>0){let formData = new FormData();for (let i = 0; i < this.state.files.length; i++) {// antd mobile 把 File 对象放在了 .file中let file = this.state.files[i].file;formData.append('file', file);}this.setState({animating:true})dispatch({type: 'activity/addCommentImgs',payload: formData,callback: (res) => {this.setState({str: res.data.url,animating:false},()=>{dispatch({type: "activity/addComment",payload: {pgid: match.params.id,personnelid: localStorage.getItem('userid'),thoughts: fieldsValue.des,imgs: this.state.str,thestar: this.state.stars},callback: res => {if (res.success) {Toast.success('评论成功！', 1);router.goBack()}}})});}})}else{dispatch({type: "activity/addComment",payload: {pgid: match.params.id,personnelid: localStorage.getItem('userid'),thoughts: fieldsValue.des,imgs: '',thestar: this.state.stars},callback: res => {this.setState({animating:false})if (res.success) {Toast.success('评论成功！', 1);router.goBack()}}})} }},])});}