What folder is leakhotfix?

Operating system for this tutorial: Windows 10 system, Dell G3 computer.

1. What is leakhotfix?

Leakhotfix is ​​a patch installation package left behind to fix system vulnerabilities. It is a library that can help hot-fix Android applications. It can fix bugs and security vulnerabilities in applications without restarting the application.

The principle of leakhotfix is ​​to check the patch package on the server and merge it into the application when the application starts. When an application uses the fixed class or method, the new code is automatically called.

2. How to use leakhotfix?

The following are the steps for hot repair using leakhotfix:

Step 1: Add dependencies

<dependencies>
    <implementation &#39;com.tencent.bugly:leakhotfix:x.y.z&#39;>
</dependencies>

Step 2: Initialization

In Application’s onCreate() Initialize leakhotfix in the method:

public class MyApp extends Application {
    @Override
    public void onCreate() {
        super.onCreate();
        // 初始化leakhotfix
        LeakHotfix.init(this, "APP_ID");
    }
}

Step 3: Upload the patch package

Upload the prepared patch package to the server.

Step 4: Apply the patch package

Use the following code to apply the patch package in the application:

LeakHotfix.applyPatch(this, "http://xxx/patch.dex");

The first parameter is Context, and the second parameter is Is the download address of the patch package.

3. Compilation and release of patch package

The following are the steps for writing and releasing patch package:

Step 1: Write patch package

Use javac compiles the source code of the patch package:

javac example.java

After generating the class file, use the dx tool to generate the dex file:

dx --dex --output=patch.dex example.class

This generates a patch package file patch.dex.

Step 2: Release the patch package

Upload the compiled patch package file to the server and obtain the download address of the patch package.

4. Advantages and disadvantages of leakhotfix

Advantages:

1. No need to re-publish the application;

2. Speed ​​of fixing bugs and security vulnerabilities Fast;

3. You can update the application without restarting the application.

Disadvantages:

1. The generation and release of patch packages requires a certain technical level and experience;

2. During the process of patch package upgrade, compatibility may occur Problem;

3. The size of the patch package may affect the performance of the application.

5. Summary

leakhotfix is ​​a very practical Android hot fix library that can help developers fix bugs and security vulnerabilities in applications without re-releasing the application. . Developers can choose the appropriate hotfix library to hotfix their applications according to their own needs.