这是我的服务类，每次都可以运行它
public class SyncService extends Service {
private String loginUserInfoId = "";
SessionManager session;
DatabaseHelper db;
MessageListActivity mLA;
String otherFileName = "";
int timer = 3000;
long totalSize = 0;
@Override
public void onCreate() {
super.onCreate();
}
@Override
public void onDestroy() {
super.onDestroy();
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
db = new DatabaseHelper(getApplicationContext());
mLA = new MessageListActivity();
session = new SessionManager(getApplicationContext());
session.checkLogin();
HashMap<String, String> user = session.getUserDetails();
loginUserInfoId = user.get(SessionManager.KEY_USER_INFO_ID);
final Handler handler = new Handler();
handler.postDelayed(new Runnable() {
@Override
public void run() {
SyncMessageFromServer();
}
}, timer);
final Handler handlerT = new Handler();
handlerT.postDelayed(new Runnable() {
@Override
public void run() {
SyncPendingMessageToServer();
}
}, 5000);
return super.onStartCommand(intent, flags, startId);
}
@Override
public IBinder onBind(Intent arg0) {
return null;
}
private void SyncMessageFromServer() {
if(Config.isInternetOn(getApplicationContext()) && loginUserInfoId != "") {
String str = "";
HttpResponse response;
HttpClient myClient = new DefaultHttpClient();
HttpPost myConnection = new HttpPost(Config.HOST_NAME+"/AndroidApp/GetAllMessage/" + loginUserInfoId);
try {
response = myClient.execute(myConnection);
str = EntityUtils.toString(response.getEntity(), "UTF-8");
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
try {
JSONArray jArray = new JSONArray(str);
for (int i = 0; i <= jArray.length() - 1; i++) {
JSONObject row = jArray.getJSONObject(i);
if (row.getString("SenderUserId") != loginUserInfoId) {
ChatMessage cm = new ChatMessage();
String currentDateTime = Config.GetCurrentDateTime();
String fileType = "";
String upFileURL = row.getString("FileAttachedURL").replace(" ", "%20");
if (upFileURL.contains(".jpg") || upFileURL.contains(".png")) {
fileType = "IMAGE";
}
else if (upFileURL.contains(".mp4")) {
fileType = "VIDEO";
}
else if (upFileURL.contains(".mp3")) {
fileType = "AUDIO";
}
else {
fileType = "";
}
/******* Firstly take data in model object ******/
cm.setOriginalMsgThreadId(row.getString("MessageThreadId"));
cm.setSenderUserInfoId(row.getString("SenderUserId"));
cm.setReceiverUserInfoId(row.getString("MultipleReceiversId"));
cm.setMessageStatus("SENT");
cm.setIsPending(0);
cm.setIsPendingToUpdate(1);
cm.setMessageText(row.getString("MessageText"));
cm.setMediaURL("");
cm.setOnlineMediaURL(Config.HOST_NAME + row.getString("FileAttachedURL").replace(" ", "%20"));
cm.setThumbImage("");
cm.setIsDownloaded(0);
cm.setMediaMIMEType(fileType);
cm.setMediaSize(0);
cm.setMediaName("");
cm.setLatitude("");
cm.setLongitude("");
cm.setSendTimeStamp(currentDateTime);
cm.setReceiveTimeStamp("");
long messageId = db.SendMessage(cm);
//Log.d("MyService", "ChatMessageId = " + messageId);
Intent iMla = new Intent("REFRESH_DATA");
iMla.putExtra("id", messageId);
//intent.putExtra("id", messageId);
sendBroadcast(iMla);
String notiAvatarURL = "";
String notiUserName = "";
List<ChatMessageThread> allChatMessageThread = db.GetMessageThreadsById(row.getString("SenderUserId"));
for (ChatMessageThread chatMessageThread : allChatMessageThread) {
notiAvatarURL = chatMessageThread.getMessageThreadAvatarURL();
notiUserName = chatMessageThread.getMessageThreadTitle();
}
if (row.getString("SenderUserId") != loginUserInfoId) {
displayNotificationMessage(row.getString("MessageText"), notiAvatarURL, notiUserName);
}
confirmSyncedToServer(row.getString("MessageId"));
}
}
} catch (JSONException e) {
e.printStackTrace();
}
}
final Handler handler = new Handler();
handler.postDelayed(new Runnable() {
@Override
public void run() {
SyncMessageFromServer();
//SyncPendingMessageToServer();
}
}, timer);
}
private void SyncPendingMessageToServer() {
//Toast.makeText(getApplicationContext(), "ToServer Run", Toast.LENGTH_LONG).show();
if(Config.isInternetOn(getApplicationContext()) && loginUserInfoId != "") {
List<ChatMessage> allChatMessage = db.getAllMessage();
for (ChatMessage chatMessage : allChatMessage) {
if (chatMessage.getIsPending() == 1 && chatMessage.getMediaMIMEType().isEmpty()) {
String msgText = chatMessage.getMessageText();
HttpClient myClient = new DefaultHttpClient();
HttpPost myConnection = new HttpPost(Config.HOST_NAME+"/AndroidApp/SendMessage");
try {
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("messageText", msgText));
nameValuePairs.add(new BasicNameValuePair("senderUserInfoId", chatMessage.getSenderUserInfoId()));
nameValuePairs.add(new BasicNameValuePair("recieverUserInfoId", chatMessage.getReceiverUserInfoId()));
nameValuePairs.add(new BasicNameValuePair("url", ""));
nameValuePairs.add(new BasicNameValuePair("isGroupMsg", "false"));
myConnection.setEntity(new UrlEncodedFormEntity(nameValuePairs));
myClient.execute(myConnection);
} catch (ClientProtocolException e) {
Toast.makeText(getApplicationContext(), "Message sending Failed!", Toast.LENGTH_LONG).show();
//e.printStackTrace();
} catch (IOException e) {
//e.printStackTrace();
}
}
}
db.updateSyncedMessage();
}
final Handler handler = new Handler();
handler.postDelayed(new Runnable() {
@Override
public void run() {
SyncPendingMessageToServer();
}
}, 10000);
}
public void confirmSyncedToServer(String messageId){
HttpResponse response;
HttpClient myClient = new DefaultHttpClient();
HttpPost myConnection = new HttpPost(Config.HOST_NAME+"/AndroidApp/MessageSynced/" + messageId);
try {
response = myClient.execute(myConnection);
} catch (ClientProtocolException e) {
Toast.makeText(getApplicationContext(),"message sending Failed!", Toast.LENGTH_LONG).show();
//e.printStackTrace();
} catch (IOException e) {
//e.printStackTrace();
}
}
private void displayNotificationMessage(String message, String notiAvatarURL, String notiUserName)
{
NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this);
Bitmap bitmap = BitmapFactory.decodeFile(notiAvatarURL);
mBuilder.setSmallIcon(R.drawable.psklogo);
mBuilder.setLargeIcon(bitmap);
mBuilder.setContentTitle(notiUserName);
mBuilder.setContentText(message);
mBuilder.setVibrate(new long[] { 500, 500});
mBuilder.setLights(Color.RED, 3000, 3000);
try {
Uri notification = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
mBuilder.setSound(notification);
} catch (Exception e) {
e.printStackTrace();
}
Intent resultIntent = new Intent(this, MessageThreadActivity.class);
TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
stackBuilder.addParentStack(MessageThreadActivity.class);
// Adds the Intent that starts the Activity to the top of the stack
stackBuilder.addNextIntent(resultIntent);
PendingIntent resultPendingIntent =
stackBuilder.getPendingIntent(
0,
PendingIntent.FLAG_UPDATE_CURRENT
);
mBuilder.setContentIntent(resultPendingIntent);
NotificationManager mNotificationManager =
(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
// notificationID allows you to update the notification later on.
mNotificationManager.notify(100, mBuilder.build());
}
}
答案 0 :(得分：1)
创建一个BroadcastReceiver并注册它以接收ACTION_BOOT_COMPLETED。您还需要RECEIVE_BOOT_COMPLETED权限。
阅读：收听和广播全局消息以及设置警报
参考此answer