The `MainActivity` registers with GCM Server and the `IntentService` sends `RegId` to the server. Wi-Fi Push Notification is working well but when running on 3G network, the MainActivity screen looks like blank screen and goes in wait state. I have spent a lot of hours for that but does not get any solution.
I've the updated code below work fine on 3G but Server Doesnot get RegId Shared using Application:
package com.appiphy.virtualnoticeboard;
import android.content.ComponentName;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.AsyncTask;
import android.os.Handler;
import android.provider.Settings;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.content.WakefulBroadcastReceiver;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.TextUtils;
import android.util.Log;
import android.widget.ImageView;
import android.widget.Toast;
import com.appiphy.virtualnoticeboard.notification.Config;
import com.appiphy.virtualnoticeboard.notification.ShareExternalServer;
import com.google.android.gms.gcm.GoogleCloudMessaging;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity {
private static int SPLASH_TIME_OUT = 1000;
ImageView splahImage;
String[] imageName;
private Context _context;
SharedPreferences megacare;
String status;
DatabaseHelper db;
Handler myHandler;
Runnable myRunnable;
String Msg, From;
String regId,From_Whom;
ArrayList<String> mylist = new ArrayList<String>();
List<Notice> noticeList = new ArrayList<Notice>(); // server to db to noticeList
public NotificationReceiver nReceiver;
ShareExternalServer appUtil;
public static final String REG_ID = "regId";
private static final String APP_VERSION = "appVersion";
GoogleCloudMessaging gcm;
static final String TAG = "Register Activity";
AsyncTask<Void, Void, String> shareRegidTask;
String result;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final SharedPreferences prefs1 = getSharedPreferences(
MainActivity.class.getSimpleName(), Context.MODE_PRIVATE);
regId = prefs1.getString(REG_ID, "");
appUtil = new ShareExternalServer();
Fragment gridView = new NoticeRowFragment();
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.container_body, gridView);
fragmentTransaction.commit();
/* if(isNetworkAvailable())*/ {
new AsyncTask<Void, Void, String>() {
@Override
protected String doInBackground(Void... params) {
if (regId.isEmpty())
{
regId = registerGCM();
}
System.out.println("RegisterActivityregisterGCM - successfully registered with GCM server - regId: " + regId);
return regId;
}
@Override
protected void onPostExecute(String msg) {
Toast.makeText(getApplicationContext(),
"Registered with GCM Server." + msg, Toast.LENGTH_LONG)
.show();
}
}.execute(null, null, null);
shareRegidTask = new AsyncTask<Void, Void, String>() {
@Override
protected String doInBackground(Void... params) {
if (!regId.isEmpty())
{
appUtil.shareRegIdWithAppServer(getApplicationContext(), regId);
}
else
result = appUtil.shareRegIdWithAppServer(getApplicationContext(), regId);
return result;
}
@Override
protected void onPostExecute(String result)
{
shareRegidTask = null;
Toast.makeText(getApplicationContext(), result,
Toast.LENGTH_LONG).show();
}
};
shareRegidTask.execute(null, null, null);
nReceiver = new NotificationReceiver();
IntentFilter filter = new IntentFilter();
filter.addAction("com.appiphy.spacecomp.spinnerframework1.Notification");
registerReceiver(nReceiver, filter);
/* Boolean value = isNotificationServiceRunning();
if (!value) {
startActivity(new Intent(Settings.ACTION_NOTIFICATION_LISTENER_SETTINGS));
}
try {
regId = getIntent().getStringExtra("regId");
Msg = getIntent().getStringExtra("Msg");
From = getIntent().getStringExtra("From");
//System.out.println("Message----InMain Activity.."+Msg);
if (From.equalsIgnoreCase("Notification")) {
Fragment gridView1 = new NoticeRowFragment();
FragmentManager fragmentManager1 = getSupportFragmentManager();
FragmentTransaction fragmentTransaction1 = fragmentManager1.beginTransaction();
fragmentTransaction1.replace(R.id.container_body, gridView1);
fragmentTransaction1.commit();
}
} catch (Exception e) {
e.printStackTrace();
}*/
}
/* else
{
System.out.println("Check Network Connection");
}*/
}
private boolean isNotificationServiceRunning()
{
ContentResolver contentResolver = getContentResolver();
String enabledNotificationListeners = Settings.Secure.getString(contentResolver, "enabled_notification_listeners");
String packageName = getPackageName();
return enabledNotificationListeners != null && enabledNotificationListeners.contains(packageName);
}
@Override
protected void onDestroy()
{
unregisterReceiver(nReceiver);
super.onDestroy();
}
class NotificationReceiver extends WakefulBroadcastReceiver
{
@Override
public void onReceive(Context context, Intent intent) {
ComponentName comp = new ComponentName(context.getPackageName(),
MainActivity.class.getName());
startWakefulService(context, (intent.setComponent(comp)));
final SharedPreferences prefs1 = getSharedPreferences(
MainActivity.class.getSimpleName(), Context.MODE_PRIVATE);
String flagNotify = prefs1.getString("broadcast", "");
try {
if (flagNotify.equalsIgnoreCase("broadcast1")) {
System.out.println("BraodCastReceiver Main Activity....................." + flagNotify);
// mToolbar.setNavigationIcon(R.drawable.navigation_drawerwithdot);
// mToolbar.setDrawerIndicatorEnabled(false);
// mToolbar.setHomeAsUpIndicator(R.drawable.navigation_drawerwithdot);
//mToolbar.setNavigationIcon(R.drawable.red_dot);
//toolBarImg.setImageResource(R.drawable.red_dot);
//toolBarImg.setVisibility(View.VISIBLE);
} else if (flagNotify.equalsIgnoreCase("FromNotice")) {
System.out.println("BraodCastReceiver From Notice...MainActivity" + flagNotify);
// toolBarImg.setVisibility(View.VISIBLE);
// mToolbar.setNavigationIcon(R.drawable.navigation_drawer);
// MainActivity.this.getSupportActionBar().setDisplayHomeAsUpEnabled(true);
// mToolbar.setLogo(R.drawable.plus_black);
// mToolbar.invalidate();
/* ActionBar actionbar = getSupportActionBar();
actionbar.setDisplayHomeAsUpEnabled(true); // Enable
actionbar.setHomeAsUpIndicator(R.drawable.plus);*/
// toolBarImg.setImageResource(R.drawable.plus);
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
public String registerGCM()
{
gcm = GoogleCloudMessaging.getInstance(this);
regId = getRegistrationId(this);
if (TextUtils.isEmpty(regId)) {
registerInBackground();
// Log.d("RegisterActivity", "registerGCM - successfully registered with GCM server - regId: "+ regId);
} else {
Toast.makeText(getApplicationContext(),
"RegId already available. RegId: " + regId,
Toast.LENGTH_LONG).show();
}
return regId;
}
private String getRegistrationId(Context context) {
final SharedPreferences prefs = getSharedPreferences(
MainActivity.class.getSimpleName(), Context.MODE_PRIVATE);
regId = prefs.getString(REG_ID, "");
/* for (Iterator<String> it = registrationId.iterator(); it.hasNext();) {
regId = it.next();
System.out.println("foo found"+regId);
}*/
if (regId.isEmpty()) {
//Log.i(TAG, "Registration not found.");
return "";
}
int registeredVersion = prefs.getInt(APP_VERSION, Integer.MIN_VALUE);
int currentVersion = getAppVersion(context);
if (registeredVersion != currentVersion) {
// Log.i(TAG, "App version changed.");
return "";
}
return regId;
}
private static int getAppVersion(Context context)
{
try
{
PackageInfo packageInfo = context.getPackageManager()
.getPackageInfo(context.getPackageName(), 0);
return packageInfo.versionCode;
}
catch (PackageManager.NameNotFoundException e)
{
// Log.d("RegisterActivity", "I never expected this! Going down, going down!" + e);
throw new RuntimeException(e);
}
}
private void registerInBackground() {
new AsyncTask<Void, Void, String>() {
@Override
protected String doInBackground(Void... params) {
String msg = "";
try {
if (gcm == null) {
gcm = GoogleCloudMessaging.getInstance(getApplicationContext());
}
regId = gcm.register(Config.GOOGLE_PROJECT_ID);
// mylist.add(regId); //this adds an element to the list.
//Set<String> regIdSet = new HashSet<String>(mylist);
//Log.d("RegisterActivity", "registerInBackground - regId: " + regId);
msg = "Device registered, registration ID=" + regId;
System.out.println("Registration Id......InService"+regId);
storeRegistrationId(getApplicationContext(), regId);
}
catch (IOException ex)
{
msg = "Error :" + ex.getMessage();
// Log.d("RegisterActivity", "Error: " + msg);
}
// Log.d("RegisterActivity", "AsyncTask completed: " + msg);
return msg;
}
@Override
protected void onPostExecute(String msg) {
Toast.makeText(getApplicationContext(),
"Registered with GCM Server." + msg, Toast.LENGTH_LONG)
.show();
}
}.execute(null, null, null);
}
private void storeRegistrationId(Context context, String regId) {
final SharedPreferences prefs = getSharedPreferences(
MainActivity.class.getSimpleName(), Context.MODE_PRIVATE);
int appVersion = getAppVersion(context);
// Log.i(TAG, "Saving regId on app version " + appVersion);
SharedPreferences.Editor editor = prefs.edit();
editor.putString(REG_ID, regId);
editor.putInt(APP_VERSION, appVersion);
editor.commit();
/*
SharedPreferences.Editor editor = prefs.edit();
editor.putString(REG_ID, regId);
editor.putInt(APP_VERSION, appVersion);
editor.commit();*/
}
public boolean isNetworkAvailable()
{
ConnectivityManager connectivityManager = (ConnectivityManager)
getApplicationContext().getSystemService(Context.CONNECTIVITY_SERVICE );
NetworkInfo activeNetInfo = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
boolean isConnected = activeNetInfo != null && activeNetInfo.isConnectedOrConnecting();
if (isConnected)
Log.i("NET", "connecte" + isConnected);
else Log.i("NET", "not connecte" +isConnected);
return isConnected;
}
}
---------------------------------------------------------------
package com.appiphy.virtualnoticeboard.notification;
import android.content.Context;
import android.os.StrictMode;
import java.io.IOException;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
/**
* Created by emp005 on 23/3/16.
*/
public class ShareExternalServer
{
public String shareRegIdWithAppServer(final Context context,
final String regId)
{
String result = "";
Map<String, String> paramsMap = new HashMap<String, String>();
paramsMap.put("regId", regId);
removeNetworkOnMainThread();
// Boolean network=mainActivity.isNetworkAvailable();
{
try {
URL serverUrl = null;
try {
//serverUrl = new URL(Config.APP_SERVER_URL);
serverUrl = new URL("http://192.168.1.207:8080/GCM-App-Server/GCMNotification?shareRegId=1");
} catch (MalformedURLException e) {
// Log.e("AppUtil", "URL Connection Error: " + Config.APP_SERVER_URL, e);
result = "Invalid URL: " + Config.APP_SERVER_URL;
//System.out.println("App Server Url"+ Config.APP_SERVER_URL);
}
StringBuilder postBody = new StringBuilder();
Iterator<Map.Entry<String, String>> iterator = paramsMap.entrySet()
.iterator();
while (iterator.hasNext())
{
Map.Entry<String, String> param = iterator.next();
postBody.append(param.getKey()).append('=')
.append(param.getValue());
if (iterator.hasNext())
{
postBody.append('&');
}
}
String body = postBody.toString();
byte[] bytes = body.getBytes();
HttpURLConnection httpCon = null;
try
{
httpCon = (HttpURLConnection) serverUrl.openConnection();
httpCon.setDoOutput(true);
httpCon.setUseCaches(false);
httpCon.setFixedLengthStreamingMode(bytes.length);
httpCon.setRequestMethod("POST");
httpCon.setRequestProperty("Content-Type",
"application/x-www-form-urlencoded;charset=UTF-8");
OutputStream out = httpCon.getOutputStream();
out.write(bytes);
out.close();
// System.out.println("Bytes--------1-"+bytes);
int status = httpCon.getResponseCode();
if (status == 200)
{
result = "RegId shared with Application Server. RegId: "
+ regId;
}
else
{
result = "Post Failure." + " Status: " + status;
}
}
finally
{
if (httpCon != null)
{
httpCon.disconnect();
}
}
}
catch (IOException e)
{
result = "Post Failure. Error in sharing with App Server.";
// Log.e("AppUtil", "Error in sharing with App Server: " + e);
}
}
return result;
}
public void removeNetworkOnMainThread()
{
// To remove Network on main thread exception
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
}
}
MainActivity向GCM服务器注册，IntentService向服务器发送RegId。 Wi-Fi推送通知运行良好但在3G网络上运行时，MainActivity屏幕看起来像空白屏幕并进入等待状态。我已经花了很多时间，但没有得到任何解决方案。