【Android(安卓)开发教程】获取发送短信后的反馈

本章节翻译自《Beginning-Android-4-Application-Development》，如有翻译不当的地方，敬请指出。

原书购买地址http://www.amazon.com/Beginning-Android-4-Application-Development/dp/1118199545/

上一节介绍了如何发送短信，但是如何知道短信被成功地发送了？这就需要创建两个PendingIntent对象去监视整个发送过程的状态。这两个PendingIntent对象作为参数传递给sendTextMessage()方法。

public class SMSActivity extends Activity {String SENT = "SMS_SENT";String DELIVERED = "SMS_DELIVERED";PendingIntent sentPI, deliveredPI;BroadcastReceiver smsSentReceiver, smsDeliveredReceiver;    IntentFilter intentFilter;        private BroadcastReceiver intentReceiver = new BroadcastReceiver() {        @Override        public void onReceive(Context context, Intent intent) {            //?display the SMS received in the TextView?            TextView SMSes = (TextView) findViewById(R.id.textView1);            SMSes.setText(intent.getExtras().getString("sms"));        }    };/** Called when the activity is first created. */@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);sentPI = PendingIntent.getBroadcast(this, 0,new Intent(SENT), 0);deliveredPI = PendingIntent.getBroadcast(this, 0,new Intent(DELIVERED), 0);}@Overridepublic void onResume() {super.onResume();//---create the BroadcastReceiver when the SMS is sent---smsSentReceiver = new BroadcastReceiver(){@Overridepublic void onReceive(Context arg0, Intent arg1) {switch (getResultCode()){case Activity.RESULT_OK:Toast.makeText(getBaseContext(), "SMS sent",Toast.LENGTH_SHORT).show();break;case SmsManager.RESULT_ERROR_GENERIC_FAILURE:Toast.makeText(getBaseContext(), "Generic failure",Toast.LENGTH_SHORT).show();break;case SmsManager.RESULT_ERROR_NO_SERVICE:Toast.makeText(getBaseContext(), "No service",Toast.LENGTH_SHORT).show();break;case SmsManager.RESULT_ERROR_NULL_PDU:Toast.makeText(getBaseContext(), "Null PDU",Toast.LENGTH_SHORT).show();break;case SmsManager.RESULT_ERROR_RADIO_OFF:Toast.makeText(getBaseContext(), "Radio off",Toast.LENGTH_SHORT).show();break;}}};//---create the BroadcastReceiver when the SMS is delivered---smsDeliveredReceiver = new BroadcastReceiver(){@Overridepublic void onReceive(Context arg0, Intent arg1) {switch (getResultCode()){case Activity.RESULT_OK:Toast.makeText(getBaseContext(), "SMS delivered",Toast.LENGTH_SHORT).show();break;case Activity.RESULT_CANCELED:Toast.makeText(getBaseContext(), "SMS not delivered",Toast.LENGTH_SHORT).show();break;}}}; //---register the two BroadcastReceivers---registerReceiver(smsDeliveredReceiver, new IntentFilter(DELIVERED));      registerReceiver(smsSentReceiver, new IntentFilter(SENT));}@Overridepublic void onPause() {super.onPause();//---unregister the two BroadcastReceivers---unregisterReceiver(smsSentReceiver);unregisterReceiver(smsDeliveredReceiver);    }public void onClick(View v) {sendSMS("130xxxxxxxx", "Hello my friends!");}//?sends an SMS message to another device?private void sendSMS(String phoneNumber, String message){SmsManager sms = SmsManager.getDefault();sms.sendTextMessage(phoneNumber, null, message, sentPI, deliveredPI);}}

首先，在onCreate里面初始化两个PendingIntent对象：

sentPI = PendingIntent.getBroadcast(this, 0,new Intent(SENT), 0);deliveredPI = PendingIntent.getBroadcast(this, 0,new Intent(DELIVERED), 0);

然后，在onResume里面注册相应的广播接收器：

registerReceiver(smsDeliveredReceiver, new IntentFilter(DELIVERED));      registerReceiver(smsSentReceiver, new IntentFilter(SENT));

接下来，传递两个PendingIntent实例：

SmsManager sms = SmsManager.getDefault();sms.sendTextMessage(phoneNumber, null, message, sentPI, deliveredPI);

最后，在onPause里面卸载相应的广播接收器：

unregisterReceiver(smsSentReceiver);unregisterReceiver(smsDeliveredReceiver);

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