android - ActivityThread的main() 和Application的onCreate() 都是应用的入口?

Question

它们有什么区别?

一个是应用程序的java入口?
一个是应用程序的android应用入口?

那么一个app启动加载的第一类就是ActivityThread吗?
关于这种问题,我应该怎么样自己测试得到结果呢?(而不是一有问题就到网站求助?)

Answer 1

Now that you have said that, I recommend you a website called Baidu. There is a box in the middle of the website. If you don’t understand anything, enter it first and click "Baidu" on the right.

Answer 2

A process should have only one entry main function

Answer 3

The main method of Activitythread is the real entrance. He managed the creation of the four major components of Android

Answer 4

The entrance to the Android application is defined in AndroidManifest.xml.
As shown below:

<intent-filter>
    <action android:name="android.intent.action.MAIN" />
    <category android:name="android.intent.category.LAUNCHER" />
</intent-filter>

Answer 5

Because ActivityThread belongs to the framework source code, so if you want to verify it by logging, it is impossible.

You can only look for clues from ActivityThread的main方法中去寻找线索,看看里面是如何进入Application的onCreate's main method to see how it enters the onCreate function of Application