Hi: I want to implement a http remote control for an Android application: From a browser on a computer in the local area network the application running on the Android device should be controlled.
Are there any recommendation how to implement this? I heard about i-jetty but it is not uncomplex to integrate it into an existing app.
The problem you're going to run into here are:
Android devices are mobile. They do not have a fixed IP address or DNS address. You'd need to implement some sort of discovery service.
Android devices move between networks, and some networks will have NAT. You won't always be able to contact the device.
My advice here would be to use the new Android C2DM service and push a command down to the device telling your application that there's a request waiting. Once the notification arrives, have your application contact a web server at a known address to see what the request actually is.
In other words, you'd be running an intermediary web server that proxies requests on behalf of your Android device.
More information about C2DM can be found here:
http://code.google.com/android/c2dm/
Related
I am working on an app that will act as a dashboard for an electronic card installed in cars and trucks.
I need the application to be able to receive data from this card, so I can display it in various ways on the app.
We chose Wifi for the communication method. To access the card, my app is able to connect to a Wifi network created by it.
I would like to receive JSON sent by the card every second.
I need help on where to start to make the two devices communicate, and what are the good practices on implementing this kind of communication.
The app basically act as a client, and the card as a server.
I found something about sockets, but it seemed to use two Android devices, a server and a client, so I'm kinda stuck here.
I use Android Studio 2.1.2 with the Android APIs ranging from 19 to latest.
One option is to broadcast with UDP the data within the local network. The moment the android device connects to the wifi network it will be in its local network. So the data can be received at the android end with a multicast receiver(check out http://jgroups.org/ ).
Refer example
It may also use the p2p sharing with TCP and bind the device with static IPs for communication. Create a simple socket receiver at the android end and a service at the device end. Depends on the way you choose it.
I'm coding a java app which consists 2 parts (android and desktop). There will be one desktop and multiple android devices.
I want to;
send data from desktop to android device which I choose,
send data from one of android devices to desktop app only.
I want to send data by using local area network. All devices will be connected same network.
It must work on different places. If I use socket programming (I guess I have to);
is it possible to find lan ip addresses all of android devices which is connected on network?
how can these android devices know the desktop's ip address? Because you know it changes network to network.
How about this:
On all devices, send pings to broadcast address.
Try to connect (TCP) to all clients that answered (not sure if every device will answer to broadcast ping). If connection is established, the other client is one of yours, running your application
Find out whether it's Desktop or Android by the messages itself.
I'm trying to make it such that a click on my web client from a computer can "trigger" the android app to run its set function.
I've searched extensively but it seems like all methods need the mobile device to initiate a connection before the web server can even do anything.
Is there a way for the web client to be the one initiating? Also, is there any way to do this without notifying the user of the device, i.e. in the background? I'm using cakephp for the web client but any kind of answer will be appreciated. Thanks!
Use push notification system to trigger any action on your device. Push notification system such as Parse, PushApps, pubnup etc are available for free and some are paid too. Try them. Send a push notification and listen to that push message and on receiving trigger your action.
Use Google Cloud Messaging .
"Google Cloud Messaging for Android (GCM) is a service that allows you to send data from your server to your users' Android-powered device, and also to receive messages from devices on the same connection. The GCM service handles all aspects of queueing of messages and delivery to the target Android application running on the target device. GCM is completely free no matter how big your messaging needs are, and there are no quotas."[Google]
Here you'll find how to implement the GCM with PHP.
I need a suggestion to implement a bluetooth application:
it scan for devices and have to check if the discovered devices has the same application installed.
There's a way to do that?
From http://developer.android.com/guide/topics/connectivity/bluetooth.html
"a Bluetooth device within the local area will respond to a discovery request only if it is currently enabled to be discoverable. If a device is discoverable, it will respond to the discovery request by sharing some information, such as the device name, *class,* and its unique MAC address. Using this information, the device performing discovery can then choose to initiate a connection to the discovered device.
So i guess the device need to accept the connection to get more information about installed apps and other.
i am developing an APP in Android which share screen to all android mobile phone connected in a session.
i want to know that android provides any sdk which provides same service like desktop to dektop access as in team View ?
or any Idea, which SDK i have to used?
Thank you.
Smartphones can't directly connect to each others since they are running in different networks. The common way to solve this is an additional server component. All phones need to connect to the server and send their data. The server is pushing this data to other connected clients, probably by using push notifications. In Android Push Notifications are known as C2DM.
Android developers blog:
http://android-developers.blogspot.com/2010/05/android-cloud-to-device-messaging.html
Here's another tutorial on the topic:
http://www.zylinc.com/blog-reader/items/c2dm-a-simple-introduction-using-a-java-server.html
I like 2X RDP a lot. It works very well on phone and tablet and connects to the regular Windows RDP server, so don’t have to install anything else on the server machine.