android - 如何等待确认短信在 AsyncTask 中发送？

Question

我正在尝试在我的 AsyncTask 中发送几条消息，并且我想跟踪已发送消息的进度。感谢@cYrixmorten 关于此主题的精彩帖子 https://stackoverflow.com/a/19084559/3339562我已经完成了大部分我想做的事情。这是我的代码:

    @Override
    public void onCreate(Bundle savedInstanceState) {
        sentReceiver = new BroadcastReceiver() {
            @Override
            public void onReceive(Context c, Intent in) {
                switch (getResultCode()) {
                case Activity.RESULT_OK:
                    break;
                default:
                    break;
                }
            }
        };
        getActivity().registerReceiver(sentReceiver, new IntentFilter(
                SENT));
    }


    public class SomeAsyncTask extends
            AsyncTask<ArrayList<Person>, Integer, Void> {
        private ProgressDialog dialog;
        private Context context;

        public SomeAsyncTask(Activity activity) {
            context = activity;
            dialog = new ProgressDialog(context);
            dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
        }

        protected void onPreExecute() {
            this.dialog.show();
        }

        @Override
        protected Void doInBackground(ArrayList<Person>... params) {
            dialog.setMax(params[0].size());
            SmsManager mySMS = SmsManager.getDefault();

            for (int i = 0; i < params[0].size(); i++) {
                    Intent sentIn = new Intent(SENT);
                    PendingIntent sentPIn = PendingIntent.getBroadcast(context,
                            i, sentIn, 0);
                    mySMS.sendTextMessage(params[0].get(i).getNum(),
                                null, message, sentPIn, null);

// HERE I NEED TO WAIT TO RECEIVE CONFIRMATION THAT MESSAGE IS SENT AND 
// THEN I CAN PUBLISH PROGRESS. HOW TO DO THAT RESULT IN onReceive() IN BroadcastReceiver()?

                    publishProgress((int) ((i / (float) params[0].size()) * 100));

            }

            return null;

        }

        @Override
        protected void onProgressUpdate(Integer... values) {
            super.onProgressUpdate(values);
            dialog.setProgress(values[0]);
        }

        @Override
        protected void onPostExecute(Void v) {

        }
}

我在我的代码中加入了解释。因此，我需要知道消息是否已发送，然后才能继续发送其他消息。实现该目标的最佳方法是什么？

Answer 1

你必须为 Intent Filter Sent 注册一个广播接收器，在那里你可以得到消息发送的事件。取一个 bool 值作为

bool isMessageSent= false; 

    registerReceiver(new BroadcastReceiver(){
                @Override
                public void onReceive(Context arg0, Intent arg1) {
                    switch (getResultCode())
                    {
                        case Activity.RESULT_OK:
                            // set boolean here to true 
                             isMessageSent = true; 
                            break;
                        case SmsManager.RESULT_ERROR_GENERIC_FAILURE:
                            // handle your result
                            break;
                        case SmsManager.RESULT_ERROR_NO_SERVICE:
                             // handle your result
                            break;
                        case SmsManager.RESULT_ERROR_NULL_PDU:
                             // handle your result
                            break;
                        default:
                            // handle your result
                            break;
                    }
                }
            }, new IntentFilter(SENT)); 

现在，在您的 doInBackground 方法中，将 while 循环添加为

while(!isMessageSent) {

}

当消息被发送时，这个循环将被终止并发送下一条消息。