I'm making a bus notification application now and having a hard time because of parsing XML data in BroadcastReceiver. (I'm very first user of Android studio)
It's my first time to use broadcastreceiver to make a notification when bus arrives at specific bus station. I'm using bus api, and it gives me a XML data. Everything was fine when I parse xml data in Activity using asyncTask but this kind of thing not working in Broadcastreceiver. Some post even said broadcastreceiver is bad for asynctask.
Can I ask how I can parse XML data in broadcastreceiver or service?
package com.example.absin.firebasebus;
import android.app.AlarmManager;
import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import java.util.Calendar;
/**
* Created by absin on 2019-05-22.
*/
public class alarm_proto extends AppCompatActivity {
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.temp_alarm);
Button btn = (Button) findViewById(R.id.alarm_btn);
btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.HOUR_OF_DAY, 16);
calendar.set(Calendar.MINUTE, 26);
calendar.set(Calendar.SECOND, 30);
Intent intent = new Intent(getApplicationContext(), Notification_reciver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(getApplicationContext(), 100, intent, PendingIntent.FLAG_UPDATE_CURRENT);
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), AlarmManager.INTERVAL_DAY, pendingIntent);
}
});
}
}
This is alarm_proto.java file that calls broadcastreceiver.
package com.example.absin.firebasebus;
import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.AsyncTask;
import android.support.v4.app.NotificationCompat;
import android.widget.Toast;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserFactory;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
import java.util.ArrayList;
/**
* Created by absin on 2019-05-22.
*/
public class Notification_reciver extends BroadcastReceiver {
final String TAG ="MainActivity";
public String dataKey = "vgOxwLDnBL1K%2B0EV%2FG7Yi%2Bge%2BwfXMB66UwEnnmJEUuoej7Zg75Z85lE7wOcYZcysMUq5Sa2VGKzNsczJqzgg9A%3D%3D";
private String requestUrl;
ArrayList<station_arrive> list = null;
station_arrive arrival = null;
String keyword1="206000472", keyword2="204000021", keyword3="35";
//keyword1= 정류소 아이디, keyword2 = 노선아이디(버스번호), keyword3 =노선의 정류소순번 (노선에서 그 정류소 몇번째에 지나가는지)
@Override
public void onReceive(Context context, Intent intent) {
final PendingResult pendingResult = goAsync();
AsyncTask<String, Void, String> asyncTask = new AsyncTask<String, Void, String>() {
@Override
protected String doInBackground(String... strings) {
requestUrl = "http://openapi.gbis.go.kr/ws/rest/busarrivalservice?serviceKey=" +dataKey+ "&stationId=" + keyword1 + "&routeId=" + keyword2 + "&staOrder=" + keyword3;
try {
boolean b_predictTime1 = false;
boolean b_predictTime2 =false;
boolean b_routeId = false;
boolean b_stationId = false;
URL url = new URL(requestUrl);
InputStream is = url.openStream();
XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
XmlPullParser parser = factory.newPullParser();
parser.setInput(new InputStreamReader(is, "UTF-8"));
int eventType = parser.getEventType();
while(eventType != XmlPullParser.END_DOCUMENT){
switch (eventType){
case XmlPullParser.START_DOCUMENT:
list = new ArrayList<station_arrive>();
break;
case XmlPullParser.END_DOCUMENT:
break;
case XmlPullParser.END_TAG:
if(parser.getName().equals("busArrivalItem") && arrival != null) {
list.add(arrival);
}
break;
case XmlPullParser.START_TAG:
if(parser.getName().equals("busArrivalItem")){
arrival = new station_arrive();
}
if (parser.getName().equals("predictTime1")) b_predictTime1 = true;
if(parser.getName().equals("predictTime2")) b_predictTime2 = true;
if(parser.getName().equals("routeId")) b_routeId = true;
if (parser.getName().equals("stationId")) b_stationId = true;
break;
case XmlPullParser.TEXT:
if(b_predictTime1){
arrival.setPredictTime1(parser.getText());
b_predictTime1 = false;
}else if(b_predictTime2) {
arrival.setPredictTime2(parser.getText());
b_predictTime2 = false;
}else if(b_routeId) {
arrival.setRouteId(parser.getText());
b_routeId = false;
} else if(b_stationId) {
arrival.setStationId(parser.getText());
b_stationId = false;
}
break;
}
eventType = parser.next();
}
} catch (Exception e) {
e.printStackTrace();
}
pendingResult.finish();
return null;
}
};
asyncTask.execute();
station_arrive sub = list.get(0);
if(sub.getPredictTime1().equals("7")) { //it means firing a notification when the bus will be at the station in 7 minutes.
NotificationCompat.Builder builder = new NotificationCompat.Builder(context, "default");
builder.setSmallIcon(R.drawable.ic_buspointer);
builder.setContentTitle("버스 알람");
builder.setContentText("제발 되어라 좀 살려줘");
builder.setAutoCancel(true); //사용자가 눌렀을 때 그냥 노티 날아간다
Intent intent1 = new Intent(context, MainActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent1, PendingIntent.FLAG_UPDATE_CURRENT);
builder.setContentIntent(pendingIntent);
Uri ringtoneUri = RingtoneManager.getActualDefaultRingtoneUri(context, RingtoneManager.TYPE_NOTIFICATION);
builder.setSound(ringtoneUri);
long[] vibrate = {0, 100, 200, 300};
builder.setVibrate(vibrate);
NotificationManager notificationManager =
(NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.createNotificationChannel(new NotificationChannel("default", "기본채널", NotificationManager.IMPORTANCE_HIGH));
notificationManager.notify(1, builder.build());
}
}
}
class station_arrive{
String predictTime1;
String predictTime2;
String routeId; // 노선아이디 aka 버스 번호
String stationId;
public String getPredictTime1() { return predictTime1; }
public String getPredictTime2() { return predictTime2; }
public String getRouteId() { return routeId; }
public String getStationId() { return stationId;}
public void setPredictTime1(String predictTime1) { this.predictTime1 = predictTime1; }
public void setPredictTime2(String predictTime2) { this.predictTime2 = predictTime2; }
public void setRouteId(String routeId) { this.routeId = routeId; }
public void setStationId(String stationId) { this.stationId = stationId; }
}
This is broadcastreceiver java file. I used goAyscn() after searching in StackOverflow and it didn't work...
<response>
<comMsgHeader>
<errMsg>NORMAL SERVICE.</errMsg>
<returnCode>00</returnCode>
</comMsgHeader>
<msgHeader>
<queryTime>2019-05-22 15:50:31.873</queryTime>
<resultCode>0</resultCode>
<resultMessage>정상적으로 처리되었습니다.</resultMessage>
</msgHeader>
<msgBody>
<busArrivalItem>
<flag>PASS</flag>
<locationNo1>4</locationNo1>
<locationNo2>6</locationNo2>
<lowPlate1>0</lowPlate1>
<lowPlate2>0</lowPlate2>
<plateNo1>경기70아1784</plateNo1>
<plateNo2>경기70아1926</plateNo2>
<predictTime1>4</predictTime1>
<predictTime2>6</predictTime2>
<remainSeatCnt1>-1</remainSeatCnt1>
<remainSeatCnt2>-1</remainSeatCnt2>
<routeId>204000021</routeId>
<staOrder>35</staOrder>
<stationId>206000472</stationId>
</busArrivalItem>
</msgBody>
</response>
And this one is the answer from api! Thank you in advanc
