The Activity Threads main method

medium-android-activity-thread-main-method.java

/**
* Code retrieved from https://android.googlesource.com/platform/frameworks/base/+/master/core/java/android/app/ActivityThread.java
* Modifications are indicated in the comments
*/
public static void main(String[] args) {
  //Modification - Removed unrelated initializers. 
  //Android initializes some tracers, event loggers, enviroment initializers, trusted certificates and updates the process' state
        Looper.prepareMainLooper();
        ActivityThread thread = new ActivityThread();
        thread.attach(false);
        if (sMainThreadHandler == null) {
            sMainThreadHandler = thread.getHandler();
        }
        // More logging
        // End of event ActivityThreadMain.
        Trace.traceEnd(Trace.TRACE_TAG_ACTIVITY_MANAGER);
        Looper.loop();
        throw new RuntimeException("Main thread loop unexpectedly exited");
}