uni-app setIntervalWeex is not defined

开发环境	版本号	项目创建方式
HBuilderX	3.4.7

产品分类：HTML5+
手机系统：iOS
手机系统版本号：iOS 15
手机厂商：苹果
手机机型：iphone7
打包方式：云端

示例代码：

```javascript
function readTempFilePath(tempPath, callback) {  
    plus.io.requestFileSystem(plus.io.PRIVATE_DOC, function(fs) {  
        let path = plus.io.convertLocalFileSystemURL(tempPath)  
        fs.root.getFile(path, {  
            create: false  
        }, function(fileEntry) {  
            fileEntry.file(function(file) {  
                var fileReader = new plus.io.FileReader();  
                fileReader.readAsText(file, 'utf-8');  
                fileReader.onloadend = function(evt) {  
                    console.log('读取成功')  
                }  
            });  
        }, function(err) {  
            console.log('err', err)  
        });  
    }, function(err) {  
        console.log('err', err)});  
}

let promiseItem = new Promise((resolve, reject) => {  
    readTempFilePath(bookStorage.downList[startIndex].file, fileRes1 => {  
        if (fileRes.code == 0) {  
            console.log('读取文件成功1', fileRes1)  

            resolve(fileRes1)  

        } else {  
            reject(false)  
        }  
    })

Promise.all([promiseItem, promiseItem, ...]).then(res => {  
    console.log(res)  
}).catch(e => {  
    console.log('报错了', e)  
    callback({code: 1})  
})

操作步骤：多个promiseItem放入promise.all中调用

预期结果：打印所有读取的文件内容

实际结果： Promise.all执行catch,打印报错了

报错了 ReferenceError: setIntervalWeex is not defined  
    at __dc__setInterval (eval at <anonymous> (Runtime.IOS.js:1), <anonymous>:4:665)  
    at Object.plusContext.setTimeout (eval at <anonymous> (Runtime.IOS.js:1), <anonymous>:4:997)  
    at Object.requestFileSystem (eval at <anonymous> (Runtime.IOS.js:1), <anonymous>:4:117692)  
    at readTempFilePath (fileUtil.js:2)  
    at eval (fileUtil.js:208)  
    at new Promise (<anonymous>)  
    at Object.saveDownloadFile (fileUtil.js:207)  
    at Function.success (read.vue:1367)  
    at   
    at Object.callback ()  uni-app:///util/fileUtil.js:254

bug描述：调用 plus.io.requestFileSystem(plus.io.PRIVATE_DOC, function(fs) {})
报错 ReferenceError: setIntervalWeex is not defined

phonegap100 1楼•4 天前

你这个问题解决了吗，我光是调用这个api就报这个问题

bupafengyu 2楼•4 天前作者

我现在也遇到这个问题，请问问题解决了吗

sinazl 3楼•4 天前

同样问题调用getLocation方法后在ios模拟器报错setIntervalWeex is not defined

phonegap100 4楼•4 天前

请问这个问题有解决吗

bupafengyu 5楼•4 天前作者

The error “Weex is not defined” in uni-app typically occurs when you are trying to use Weex-specific APIs or features in a non-Weex environment. uni-app is a cross-platform framework that supports multiple platforms, including H5, WeChat Mini Programs, and native apps (via Weex). However, not all platforms support Weex-specific features.

Understanding the Issue

Weex: A framework for building high-performance mobile apps using Vue.js. It is used in uni-app for native app development.
setInterval: A JavaScript function that repeatedly calls a function or executes a code snippet, with a fixed time delay between each call.

If you are using setInterval in a uni-app project and encounter the “Weex is not defined” error, it is likely because the code is being executed in an environment where Weex is not available (e.g., H5 or a Mini Program).

Solution

To avoid this error, you should check the environment before using Weex-specific features. Here’s how you can do it:

Check the Platform: Use uni-app’s platform detection to determine the current environment.

// Check if the platform is Weex (native app)
if (uni.getSystemInfoSync().platform === 'ios' || uni.getSystemInfoSync().platform === 'android') {
    // Weex-specific code
    setInterval(() => {
        console.log('This is running in a Weex environment');
    }, 1000);
} else {
    // Code for other platforms (H5, Mini Programs, etc.)
    setInterval(() => {
        console.log('This is running in a non-Weex environment');
    }, 1000);
}

Use Uni-app’s Cross-Platform APIs: Whenever possible, use uni-app’s cross-platform APIs instead of platform-specific ones. For example, use uni.setTimeout or uni.setInterval instead of the native setTimeout or setInterval.

uni.setInterval(() => {
    console.log('This is running in any environment');
}, 1000);

Conditional Compilation: Use conditional compilation to include or exclude code based on the platform.

// #ifdef APP-PLUS
// Weex-specific code
setInterval(() => {
    console.log('This is running in a Weex environment');
}, 1000);
// #endif

// #ifndef APP-PLUS
// Code for other platforms (H5, Mini Programs, etc.)
setInterval(() => {
    console.log('This is running in a non-Weex environment');
}, 1000);
// #endif