android闹钟功能报告.doc

——闹钟分析透彻,有点基础都能看懂!1设置定时时间文件:packages/apps/alarmclock//android/alarmclock/(Contextcontext,finalAlarmalarm,           finallongatTimeInMillis){       AlarmManageram=(AlarmManager)               ();             ...       (,atTimeInMillis,sender);            ...   }由闹钟管理器设置定时时间。:frameworks/base/core/java/android/app/=0;   publicstaticfinalintRTC=1;   publicstaticfinalintELAPSED_REALTIME_WAKEUP=2;publicstaticfinalintELAPSED_REALTIME=3;    AlarmManager(IAlarmManagerservice){       mService=service;   }   publicvoidset(inttype,longtriggerAtTime,PendingIntentoperation){       try{           (type,triggerAtTime,operation);       }catch(RemoteExceptionex){       }   }将type,triggerAtTime,operation等参数转向闹钟管理器服务。3闹钟管理器服务文件:frameworks/base/services//android/server/(Contextcontext){        mDescriptor=init();           ...}publicvoidset(inttype,longtriggerAtTime,PendingIntentoperation){       setRepeating(type,triggerAtTime,0,operation);   }      publicvoidsetRepeating(inttype,longtriggerAtTime,longinterval,           PendingIntentoperation){       if(operation==null){           (TAG,"set/setRepeatingignoredbecausethereisnointent");