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我有一個提供SMS消息傳遞的應用程序。短信數據存儲在應用程序數據庫中。 該應用程序支持發送給多個聯繫人，因此發送短信時，我會註冊一個不同的BroadcastReceiver以偵聽是否發送每個SMS（我使用識別IntentFilter中的操作的字符串中的每個電話號碼）。如何在用戶離開活動後收到SMS發送/傳遞的針對個人短信的反饋
我在收到發送確認信息後將短信寫入數據庫。
問題是，如果用戶在「已發送」Intent被廣播之前離開活動，則BroadcastReceivers將丟失，並且我無法捕獲「已發送」Intent，因此數據庫未更新。我選擇的一種解決方法是實施onKeyDown（）以防止用戶在播放所有Intents之前關閉活動，但此解決方案僅適用於「返回」按鈕 - 無法捕獲「主頁」按鈕事件。
這裏是我的代碼：
public void sendSMS(String[] phoneNumbers, String message){
final String currentMessage = message;
SmsManager sms = SmsManager.getDefault();
ArrayList<String> parts = sms.divideMessage(message);
for(int i=0; i<phoneNumbers.length; i++){
for(int j=0; j<parts.size(); j++){
BroadcastReceiver sent = new BroadcastReceiver(){
public void onReceive(Context arg0, Intent arg1) {
String[] arg = arg1.getAction().split(KEY_SMS_SENT);
String phoneNo = Utils.setSimpleFormatNumber(arg[1]);
String count = arg[0];
String parts = count.split(KEY_SMS_PART_NO)[0];
String partNo = count.split(KEY_SMS_PART_NO)[1];
sentReceivers.remove(this);
unregisterReceiver(this);
switch (getResultCode())
{
case Activity.RESULT_OK:
if(parts.equals(partNo)){
Toast.makeText(getBaseContext(), context.getString(R.string.sms_sent_message),
Toast.LENGTH_SHORT).show();
dbAdapter.createSentSMS(KEY_SMS_TYPE_SENT, phoneNo, currentMessage, Utils.getTimeStamp());
}
break;
case SmsManager.RESULT_ERROR_GENERIC_FAILURE:
if(parts.equals(partNo)){
Toast.makeText(getBaseContext(), context.getString(R.string.sms_generic_failure_message),
Toast.LENGTH_SHORT).show();
dbAdapter.createSentSMS(KEY_SMS_TYPE_FAILED, phoneNo, currentMessage, Utils.getTimeStamp());
}
break;
case SmsManager.RESULT_ERROR_NO_SERVICE:
if(parts.equals(partNo)){
Toast.makeText(getBaseContext(), context.getString(R.string.sms_no_service_message),
Toast.LENGTH_SHORT).show();
dbAdapter.createSentSMS(KEY_SMS_TYPE_FAILED, phoneNo, currentMessage, Utils.getTimeStamp());
}
break;
case SmsManager.RESULT_ERROR_NULL_PDU:
if(parts.equals(partNo)){
Toast.makeText(getBaseContext(), context.getString(R.string.sms_null_pdu_message),
Toast.LENGTH_SHORT).show();
dbAdapter.createSentSMS(KEY_SMS_TYPE_FAILED, phoneNo, currentMessage, Utils.getTimeStamp());
}
break;
case SmsManager.RESULT_ERROR_RADIO_OFF:
if(parts.equals(partNo)){
Toast.makeText(getBaseContext(), context.getString(R.string.sms_radio_off_message),
Toast.LENGTH_SHORT).show();
dbAdapter.createSentSMS(KEY_SMS_TYPE_FAILED, phoneNo, currentMessage, Utils.getTimeStamp());
}
break;
}
}
};
registerReceiver(sent, new IntentFilter(String.valueOf(parts.size()-1) + KEY_SMS_PART_NO + String.valueOf(j) + KEY_SMS_SENT + phoneNumbers[i]));
//I add the BroadcastReceiver-s to a Vector in order to keep track of them
sentReceivers.add(sent);
}
}
//I use an IntentService to do the actual sending
Intent intent = new Intent(context, SMSSendService.class);
intent.putExtra(KEY_SELECTED_PHONE_NUMBERS, phoneNumbers);
intent.putExtra(KEY_SMS_MESSAGE, message);
intent.putExtra(KEY_ACTION, KEY_REQUEST_SEND_SMS);
startService(intent);
}
，這是在IntentService代碼：
public void sendSMS(String phoneNo, String message, SmsManager sms)
{
ArrayList<String> parts = sms.divideMessage(message);
ArrayList<PendingIntent> sentPIs = new ArrayList<PendingIntent>();
for(int i=0; i<parts.size(); i++){
sentPIs.add(PendingIntent.getBroadcast(context, 0, new Intent(String.valueOf(parts.size()-1) + KEY_SMS_PART_NO + String.valueOf(i) + KEY_SMS_SENT + phoneNo), 0));
}
sms.sendMultipartTextMessage(phoneNo, null, parts, sentPIs, deliveredPIs);
}