android - 为什么 *.so 文件加载为静态代码？

Question

我使用的是opencv4android，如下图。我读过的大部分教程都指出*.so文件应该放在静态代码块中。为什么不使用单例模式，只在使用时加载？

 static{
    System.loadLibrary("opencv_java3")
 }

Answer 1

在official Android documentation about JNI他们说:

If you have only one class with native methods, it makes sense for the call to System.loadLibrary to be in a static initializer for that class. Otherwise you might want to make the call from Application so you know that the library is always loaded, and always loaded early.

你也可以看看this SO answer .