Android(安卓)PDU
Android设备接收到的SMS是以pdu形式的(protocol description unit)。android.telephony.gsm.SmsMessage这个类可以储存SMS的相关信息,我们也可以从接收到的pdu中创建新的SmsMessage实例,Toast界面组件可以以系统通知的形式来显示接收到的SMS消息文本。 A PDU is a "protocol discription unit", which is the industry format for an SMS message. because SMSMessage reads/writes them you shouldn't need to disect them. A large message might be broken into many, which is why it is an array of objects.
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