I want to create an Android service, which notifies the main activity whenever disconnects and when internet reconnects again. I have following function for checking internet connectivity:.
CODE:...........
But I want to know, how to use it in a service.
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I'm new to Android development and working on an Android application that requires the phone to be connected to the internet, through either Wifi, EDGE or 3G.
This is the code that I'm using to check whether an internet connection is available
CODE:................
I've also set these permissions in the manifest file.
CODE:.................
This works fine in the emulator running version 1.5 of Android when 3G is enabled, but it crashes when I disable the 3G connection. My application throws a null pointer exception when I call isConnectedOrConnecting(). The same thing also happens on my HTC Desire running Android 2.1.
I am trying to check internetconnectivity in android and using following code
CODE:..........
But it gives me network/ wifi connectivity if wifi is connected it gives me true and if internet is not connected then it also gives me true.
I am developing an Android app which needs to poll a specific webpage in time intervals. I've got it to the point where it does indeed poll the page on a specific interval, and that interval is specified in a SharedPreference which can be changed by the user in the settings page of the app. But complications arise when network connectivity is flaky.For example, how do I ensure that the Service "wakes up" the network adapter and gives it ample time to connect before polling the page, in the case that the phone was sleeping to save power? This polling action can happen as little as once every 24 hours, so I don't want to miss one action just because the network was out (but turned on a few seconds, minutes, or even hours later).
Or there are times when the web service doesn't respond, or DNS doesn't respond, or what have you, and for any reason it doesn't get a response even though the phone is technically connected. What sort of rule do I put in place to make this retry later, so that I'm not retrying repeatedly when the user specifically turned off their internet but I'm retrying soon enough that if it was just a hiccup, the data can be received soon after the first try?Are there any examples for this type of situation? What is the logic to best handle this?
I am working to send request to internet and get data, my emulator show the 3G sign on it, i have also sent the permission to internet connectivity in my app. But when i click on button to send request it return null. I have checked the request link in chrom it send data successfully.
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I have a Service/AlarmManager set to go off ever hour; as seen at: http://github.com/commonsguy/cw-advandroid/tree/master/SystemServices...
The Alarm triggers a Socket connection to communicate with a Web Server. I'm logging the interaction to a file so I can see it later. When I leave the phone on my desk for a day, it seems that more often than not I get a "Network unreachable" error when trying to do any networking.
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I am trying to find a way to get the connectivity state in a service, found the code below but getSystemService is red underlined.
public boolean isOnline() {
ConnectivityManager cm = (ConnectivityManager) this.getSystemService(Context.CONNECTIVITY_SERVICE );
return cm.getActiveNetworkInfo().isConnectedOrConnecting( );
}
Anybody notice they are losing their Internet connectivity while tethering with 2.2 Roms. I have run BB, Kangerade, and CM6 rc1&2 with them all losing Internet connectivity completely. I have tried different kernels and different baseband all resulting in the connectivity loss. Is this a hardware problem with the phone or is it software based. This is a somewhat new phone and I honestly can't remember my previous one giving me this many problems while running 2.2 roms when they first came out.
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View 2 Replies View RelatedThe H symbol is displayed at the top of the screen and the arrows occasionally flash. The 'up arrow' flashes more often than the 'down arrow'. I have at least 2-4 bars reception.
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I am on t-mobile.
Fixes I have tried:
- turn on/off
- APN settings check
- Airplane mode
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public class ServiceExampleActivity extends Activity { Intent intent; Button start,stop; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); intent = new Intent(this, ServiceExample.class); // service example is service class Log.i("-----service------", "Service Created"); }
How do I check if a background service (on Android) is running? I want an android activity that toggles the state of the service -- lets me turn it on if it is off and off if it is on.
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Or is this taken carre of in android? If not, How should I take care of it? is there a timer?
Does anyone know how to, or if it's even possible to check the (foreground process/top of the activity stack) from a service?
View 20 Replies View RelatedI was trying to make an anonymous class to upload a file to a server.
I wanted to make that easily reusable much like some kind of component.
Everything works fine but as a final touch i wanted to add a function to check if internet connection is available.
Problem is, the call to the connectivity manager needs the Context :
ConnectivityManager connec = (ConnectivityManager) getSystemService (Context.CONNECTIVITY_SERVICE);
Since i'm in an anonymous class and I've read that it's not a good idea to pass the whole context to classes, I wondered about two things :
1 - Is there another way to check internet connection without the Context ? 2 - Why in Android internals make it necessary to have the context just to check if the device is connected to internet ?