What should I do if the components are not displayed after uniapp is packaged?

When I was using uniapp for development recently, I encountered a problem. After packaging, some components could not be displayed normally. This problem took me several hours to debug and solve, and also helped me better understand some of the details in uniapp development.

First of all, I need to explain that my project is developed based on the uniapp framework. And when I packaged the APP, I found that some page components could not be displayed normally. The specific performance was that the page was blank without any content. In response to this problem, I conducted the following debugging and solutions.

First, I checked the project's code and didn't find any problems. So, I started to pay attention to the packaging process of uniapp and found the packaging configuration file manifest.json of uniapp. In this file, I found a very important field, which is the "pages" field.

The "pages" field is used to configure the pages in the uniapp project, specifying a path and name for each page. I noticed that in the packaged APP, the manifest.json file was not packaged into the APP, which means that the APP cannot load the pages configured in the "pages" field.

In order to solve this problem, I need to manually add the manifest.json file to the APP. The specific method is to find the manifest.json file in the packaging directory of uniapp, then create an "unpackage" folder in the root directory of the APP, and copy the manifest.json file to the folder.

Next, find the corresponding platform folder (such as the "android" or "iOS" folder) in the "unpackage" folder, and copy the manifest.json file to the folder. Finally, manually add a link to the manifest.json file in the APP's main entrance HTML file to solve the problem of components not being displayed.

Finally, what I want to say is that although this problem took me a lot of time to solve, this process also gave me a deeper understanding of the details of uniapp development and the packaging process. I believe that in future development, I will pay more attention to these details and write better uniapp projects.

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