使 点击进入签名的按钮 的handleAddFile方法实现跳转到名为SIGN的页面，使用uni.navigateto

为了实现“点击进入签名”的按钮在点击后跳转到名为 `SIGN` 的页面，可以修改 `handleAddFile` 方法，使用 `uni.navigateTo` 进行页面跳转。具体步骤如下：

1. 在 `methods` 中定义 `handleAddFile` 方法。
2. 使用 `uni.navigateTo` 方法进行页面跳转。

以下是具体的代码实现：

methods: {
    // 其他方法...

    handleAddFile() {
        uni.navigateTo({
            url: '/pages/SIGN/SIGN'
        });
    }
}

### 完整的方法部分

methods: {
    async handleCheckPersonAfterRead(file, index) {
        let url = file.file.url;
        const result = await this.uploadFilePromise(url);
        let parsedResult = JSON.parse(result);
        this.$set(this.tab1Data.rows[index], 'imgUrl', [{ url }]);
        this.$set(this.tab1Data.rows[index], 'fileList', parsedResult.data);
    },
    handleCheckPersonDelete(index) {
        this.$set(this.tab1Data.rows[index], 'fileList', '');
        this.$set(this.tab1Data.rows[index], 'imgUrl', []);
    },
    async handleCheckPersonAfterRead1(file, index) {
        let url = file.file.url;
        const result = await this.uploadFilePromise(url);
        let parsedResult = JSON.parse(result);
        this.$set(this.tab1Data.rows[index], 'imgUrl1', [{ url }]);
        this.$set(this.tab1Data.rows[index], 'fileList1', parsedResult.data);
    },
    handleCheckPersonDelete1(index) {
        this.$set(this.tab1Data.rows[index], 'fileList1', '');
        this.$set(this.tab1Data.rows[index], 'imgUrl1', []);
    },
    async afterRead(file, index) {
        let url = file.file.url;
        const result = await this.uploadFilePromise(url);
        let parsedResult = JSON.parse(result);
        this.$set(this.anotherData.rows[index], 'imgUrl', [{ url }]);
        this.$set(this.anotherData.rows[index], 'fileList', parsedResult.data);
    },
    deletePic(index) {
        this.$set(this.anotherData.rows[index], 'fileList', '');
        this.$set(this.anotherData.rows[index], 'imgUrl', []);
    },
    async afterRead1(file, index) {
        let url = file.file.url;
        const result = await this.uploadFilePromise(url);
        let parsedResult = JSON.parse(result);
        this.$set(this.anotherData.rows[index], 'imgUrl1', [{ url }]);
        this.$set(this.anotherData.rows[index], 'fileList1', parsedResult.data);
    },
    deletePic1(index) {
        this.$set(this.anotherData.rows[index], 'fileList1', '');
        this.$set(this.anotherData.rows[index], 'imgUrl1', []);
    },
    async afterRead2(event) {
        let lists = [].concat(event.file);
        let fileListLen = this[`fileList${event.name}`].length;
        lists.map((item) => {
            this[`fileList${event.name}`].push({ ...item, status: 'uploading', message: '上传中' });
        });
        for (let i = 0; i < lists.length; i++) {
            const result = await this.uploadFilePromise(lists[i].url);
            let parsedResult = JSON.parse(result);
            let item = this[`fileList${event.name}`][fileListLen];
            this[`fileList${event.name}`].splice(fileListLen, 1, Object.assign(item, { status: 'success', message: '', url: parsedResult.data }));
            fileListLen++;
        }
        console.log(this.fileList);
    },
    deletePic2(e) {
        this['fileList'].splice(0, 1);
    },
    uploadFilePromise(url) {
        const header = { 'Authorization': `Bearer ${getToken()}` };
        return new Promise((resolve, reject) => {
            let a = uni.uploadFile({
                url: 'http://10.118.50.18:8001/api/danger_rectify_record/upload',
                filePath: url,
                header: header,
                name: 'fileinput',
                success: (res) => {
                    resolve(res.data);
                }
            });
        });
    },
    fetchTab1Data() {
        request({
            url: '/api/check_carryout_record_daily/getPageData',
            method: 'POST',
            header: { 'content-type': 'application/json', 'Authorization': `Bearer ${getToken()}` },
            data: {},
            dataType: 'json'
        }).then(response => {
            this.tab1Data.originalRows = response.rows.map(item => ({
                ...item,
                complianceStatus: '符合',
                fileList: '',
                imgUrl: [],
                fileList1: '',
                imgUrl1: []
            }));
            this.filterData(this.tab1Data);
            this.tab1Areas = [...new Set(response.rows.map(item => item.AREA_NAME))];
        }).catch(error => {
            console.error(error);
            uni.showToast({ title: '请求失败', icon: 'none' });
        });
    },
    fetchTab2Data() {
        request({
            url: '/api/check_carryout_record/getPageData',
            method: 'POST',
            header: { 'content-type': 'application/json', 'Authorization': `Bearer ${getToken()}` },
            dataType: 'json'
        }).then(response => {
            this.anotherData.originalRows = response.rows.map(item => ({
                ...item,
                complianceStatus: '符合',
                fileList: '',
                imgUrl: [],
                fileList1: '',
                imgUrl1: []
            }));
            this.filterTab2Data(this.anotherData);
            this.tab2Areas = [...new Set(response.rows.map(item => item.AREA_NAME))];
        }).catch(error => {
            console.error(error);
            uni.showToast({ title: '请求失败', icon: 'none' });
        });
    },
    showCheckStandardModal(checkSta) {
        this.selectedItemForModal = { checkSta };
        this.isAnotherModalVisible = true;
        this.isModalVisible = false;
    },
    filterByArea() {
        console.log('Selected Area:', this.selectedArea);
        this.filterData(this.tab1Data);
        this.filterTab2Data(this.anotherData);
    },
    filterData(data) {
        const taskId = String(this.taskId);
        data.rows = data.originalRows.filter(item => {
            return String(item.Main_task_Nopri) === taskId && (!this.tab1SelectedArea || item.AREA_NAME === this.tab1SelectedArea);
        });
    },
    filterTab2Data(data) {
        const taskId = String(this.taskId);
        data.rows = data.originalRows.filter(item => {
            return String(item.Main_task_Nopri) === taskId && (!this.tab2SelectedArea || item.AREA_NAME === this.tab2SelectedArea);
        });
    },
    showDetail(item) {
        this.selectedItem = {
            Main_task_Nopri: item.Main_task_Nopri,
            DANGER_DESC: item.DANGER_DESC,
            CHECK_AREA_ID: item.AREA_ID,
            CHECK_AREA: item.AREA_NAME
        };
        this.isModalVisible = true;
    },
    closeModal() {
        this.isModalVisible = false;
    },
    updateItem() {
        if (this.fileList.length !== 0) {
            this.selectedItem.DANGER_PIC = this.fileList[0].url;
        }
        let params = [];
        for (const [key, value] of Object.entries(this.selectedItem)) {
            params.push(`${encodeURIComponent(key)}=${encodeURIComponent(value)}`);
        }
        const querystring = params.join('&');
        const baseUrl = '/api/danger_rectify_record/InsertTaskDanger';
        const urlWithParams = `${baseUrl}?${querystring}`;
        request({
            url: urlWithParams,
            method: 'POST',
            header: { 'content-type': 'application/json', 'Authorization': `Bearer ${getToken()}` },
            dataType: 'json'
        }).then(response => {
            this.closeModal();
            this.fetchTab1Data();
            uni.showToast({ title: '更新成功', icon: 'success' });
        }).catch(error => {
            console.error(error);
            uni.showToast({ title: '更新失败', icon: 'none' });
        });
    },
    handleComplianceChange(event, item) {
        const selectedIndex = event.detail.value;
        const options = ['符合', '不符合'];
        item.complianceStatus = options[selectedIndex];
    },
    submitAll() {
        for (let i = 0; i < this.tab1Data.rows.length; i++) {
            let mainData = {};
            mainData.CHECK_C_ID = this.tab1Data.rows[i].CHECK_C_ID;
            if (this.tab1Data.rows[i].fileList != '') {
                mainData.CHECKPERSON_URL = this.tab1Data.rows[i].fileList;
            }
            if (this.tab1Data.rows[i].fileList1 != '') {
                mainData.INSPECTOR_URLl = this.tab1Data.rows[i].fileList1;
            }
            const url = '/api/check_carryout_record_daily/checkstatus?CHECK_C_ID=' + mainData.CHECK_C_ID;
            request({
                url: url,
                method: 'POST',
                header: { 'content-type': 'application/json', 'Authorization': `Bearer ${getToken()}` },
                data: { mainData },
                dataType: 'json'
            }).then(response => {
                this.closeModal();
                this.fetchTab1Data();
                uni.showToast({ title: '更新成功', icon: 'success' });
            }).catch(error => {
                console.error(error);
                uni.showToast({ title: '更新失败', icon: 'none' });
            });
            request({
                url: '/api/check_carryout_record_daily/update',
                method: 'POST',
                header: { 'content-type': 'application/json', 'Authorization': `Bearer ${getToken()}` },
                data: { mainData },
                dataType: 'json'
            }).then(response => {
                this.closeModal();
                this.fetchTab1Data();
                uni.showToast({ title: '更新成功', icon: 'success' });
            }).catch(error => {
                console.error(error);
                uni.showToast({ title: '更新失败', icon: 'none' });
            });
        }
    },
    submitAll1() {
        for (let i = 0; i < this.anotherData.rows.length; i++) {
            let mainData = {};
            mainData.CHECK_C_ID = this.anotherData.rows[i].CHECK_C_ID;
            if (this.anotherData.rows[i].fileList != '') {
                mainData.CHECKPERSON_URL = this.anotherData.rows[i].fileList;
            }
            if (this.anotherData.rows[i].fileList1 != '') {
                mainData.INSPECTOR_URLl = this.anotherData.rows[i].fileList1;
            }
            request({
                url: '/api/check_carryout_record/update',
                method: 'POST',
                header: { 'content-type': 'application/json', 'Authorization': `Bearer ${getToken()}` },
                data: { mainData },
                dataType: 'json'
            }).then(response => {
                this.closeModal();
                this.fetchTab1Data();
                uni.showToast({ title: '更新成功', icon: 'success' });
            }).catch(error => {
                console.error(error);
                uni.showToast({ title: '更新失败', icon: 'none' });
            });
        }
    },
    onLoad(options) {
        if (options.id) {
            this.taskId = decodeURIComponent(options.id);
        }
        if (options.checkType) {
            this.checkType = decodeURIComponent(options.checkType);
        }
        this.setTabsVisibility();
        this.fetchTab1Data();
        this.fetchTab2Data();
    },
    setTabsVisibility() {
        console.log('Setting tabs visibility with checkType:', this.checkType);
        const checkType = parseInt(this.checkType);
        switch (checkType) {
            case 1:
            case 8:
                this.currentTab = 'tab1';
                this.showTab2 = true;
                console.log('showTab2 set to true');
                break;
            case 0:
            case 2:
            case 3:
            case 4:
            case 5:
            case 6:
            case 7:
            case 9:
                this.currentTab = 'tab1';
                this.showTab2 = false;
                console.log('showTab2 set to false');
                break;
            default:
                this.currentTab = 'tab1';
                this.showTab2 = false;
                console.log('showTab2 set to false (default)');
                break;
        }
    },
    onTab1PickerChange(e) {
        const index = e.detail.value;
        this.tab1SelectedIndex = index;
        this.tab1SelectedArea = this.tab1Areas[index];
        this.filterData(this.tab1Data);
    },
    onTab2PickerChange(e) {
        const index = e.detail.value;
        this.tab2SelectedIndex = index;
        this.tab2SelectedArea = this.tab2Areas[index];
        this.filterTab2Data(this.anotherData);
    },
    mounted() {
        this.$nextTick(() => {
            this.filterData(this.tab1Data);
            this.filterTab2Data(this.anotherData);
        });
    },

    // 新增的 handleAddFile 方法
    handleAddFile() {
        uni.navigateTo({
            url: '/pages/SIGN/SIGN'
        });
    }
}

通过上述修改，当用户点击“点击进入签名”按钮时，将跳转到名为 `SIGN` 的页面。