How does uniapp determine whether to install WeChat?

With the development of mobile Internet, WeChat has become the most popular and widely used social tool among domestic users. For some application developers involved in WeChat-related functions, it is necessary to add a judgment in the program to determine whether the user has installed the WeChat application, so as to give corresponding prompts or choose other ways to implement related functions if the user does not have WeChat installed. .

In uniapp development, we can use the uni.getProvider() function that comes with uniapp to determine whether the current device has a provider's application installed. WeChat is currently one of the most widely used social tools in China. Here we mainly introduce how to use the uni.getProvider() function to determine whether the WeChat application is installed on the device.

The steps are as follows:

1. Where you need to determine whether the WeChat application is installed, write the following code:

uni.getProvider({
    service: 'share',
    success: function (res) {
        if (res.provider[0] == 'weixin') {
            console.log('微信已经安装')
        } else {
            console.log('微信尚未安装')
        }
    }
})

2. Code explanation:

uni.getProvider is the API provided by uniapp to obtain service support providers. It can return an array containing the service providers that have been installed on the current device. Among them, the service parameter specifies the service type to be obtained, here we specify it as a sharing service (i.e. WeChat sharing). Next, if WeChat has been installed, the returned array will contain WeChat. We determine whether WeChat has been installed by checking whether the first value of the array is "weixin".

3. Note:

• When using the uni.getProvider() function, you need to note that the parameter passed in must be an object, and the service parameter must be specified. and success parameters.
• Since WeChat is one of the most widely used social tools in China, using the uni.getProvider() function to determine whether the device has a WeChat application installed is also a very common operation in uniapp development.

Summary:

The above is an introduction to the method of using the uni.getProvider() function in uniapp to determine whether the device has the WeChat application installed. In actual development, we can also implement this function in other ways, such as using navigator.userAgent to determine whether the WeChat application is installed on the device, or using plug-ins in the uniapp community to implement this function. The method introduced here is just one of them, aiming to provide an idea and direction. Readers can choose the most appropriate method according to their own specific circumstances to determine whether the WeChat application is installed on the device.

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