How to debug uniapp after packaging

With the development of mobile Internet, the development and use of mobile application software are becoming more and more popular. There are also endless tools for developing mobile applications for different platforms. Among them, uniapp, as a cross-platform development tool, has attracted the attention and use of more and more developers. However, during the development process, you will inevitably encounter some problems, such as how to debug the packaged application. Let's briefly introduce the debugging method of uniapp after packaging.

1. Two packaging modes

First of all, you need to understand the two packaging modes of uniapp:

1. H5 mode

In In H5 mode, developers do not need to conduct real-device debugging, and only need to test on the WeChat applet or H5 side. Of course, H5 mode can only debug some issues related to screen adaptation, such as responsive design, media queries, etc.

2. Offline packaging mode

In the offline packaging mode, developers need to put the application on the app store or use other packaging tools to package the application on a real device, and then debug.

2. Offline packaging and debugging

Since the H5 mode can only solve some basic problems, you need to use the offline packaging mode when you need to debug some special functions.

1. Generate debug version

In offline packaging mode, you need to enter HbuilderX in the uni-app project directory, select manifest.json, and the following Image# appears under it

Under Image/manifest.json

Select "Compile Mode" to generate a debug version. This step will generate a debug.apk file. This apk file is the version we need to debug.

2. Android mobile phone debugging

After getting the debug.apk file, after installing it on the real machine, you need to make the following settings:

• In Turn on developer options and USB debugging in the phone's "Settings";
• Connect the phone to the computer via a USB cable, and in the "Run" view on the right side of Hbuilder Run";
• Enter the Chrome browser and enter "chrome://inspect#devices" to enter "Developer Tools";
• Find under "Remote Target" on the left side of the developer tools For the application to be debugged, click on the "inspect" button to enter debugging mode.

3. IOS mobile phone debugging

For IOS mobile phones, the following operations need to be performed:

• Use XCode to connect to the mobile phone;
• Select the application in XCode and click the "Debug" button to enter debugging mode;
• Open the Safari browser on your computer and check the "Develop" option in its settings;
• Select the application under "Remote Target" in Safari and click on the "inspect" button to enter debugging mode.

3. Debugging common problems

Although uniapp provides a convenient debugging method, you will still encounter some common problems, such as:

1. Debug mode loads too slowly

Because more debugging scripts need to be loaded in debug mode, sometimes loading is slow. The solution can be to check the "Disable Cache" option in "Setting" of "Developer Tools".

2. Error occurs in debugging mode

You may encounter some error reporting problems in debugging mode, which need to be solved by troubleshooting, such as checking whether there are undefined variables, undefined variables, etc. Reference documents, etc.

4. Summary

Debugging is an essential part of the development process, and uniapp provides us with a convenient debugging method. When performing real-machine debugging after packaging, you need to pay attention to generating the correct debug version and follow the correct steps to set it up. I hope this article can be helpful to developers who need to debug in uniapp.

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