考察内容: service启动有哪几种方式? service启动过程中主要流程有哪些? service启动过程涉及哪些参与者,通信过程是怎样的? Service启动原理 用startService启动Service: @Override public ComponentName startService(Intent service) { return startServiceCommon(service, mUser); } ComponentName startServiceCommon(Intent service, ...){ ComponentName cn = Activi