Android 手机 话费节约程序（通话时每次快到一分钟前震动一次，但是从摘机开始计时） 涉及 android Activities，Services，Broadcast receivers 的模板，手机状况监听，震动器,设置保存，开机自启动等功能-Android mobile phone top conservation program (call each time a minute before approaching a shock, but from picking up the