在 framework/base/services/java/com/android/server/am/ActivityManagerService.java: public static final Context main(int factoryTest) { ........ ActivityManagerService m = thr.mService; mSelf = m; ........ m.startRunning(null, null, null, null); return context; } startRunning( ) 的最後是 call systemReady(): public final void startRunning(String pkg, String cls, String action, ........ systemReady(null); }