Android :: Service Connection Does Not Execute
Jan 12, 2010
I do a ((Context)thingy).bindService(...) from within the onCreate callback of an Activity. I've observed that the onServiceConnected() callback of my associated Service Connection does not execute immediately, but rather, is delayed until after the Activity resumes, or more precisely, after return from the onResume() callback of the Activity. I discovered this the hard way (through a null pointer exception) because I was unable to use the Service (I call a method in the Service to start a Thread) immediately upon return from the bindService () call.
I assume this is normal behavior, but I don't understand why, and I further assume that there is a good reason for it and that I would benefit from understanding it. I'm guessing that maybe the Service isn't eligible to run because there are fewer than 1 processes bound that are in an active state.(?) But once it starts, if I then start the Thread within, it continues to completion of its task, even if the Activity calls unbindService() and terminates first! I don't mind that behavior (it's what I want to happen), but I want to know whether I can generally rely on it. I'm seeking some wisdom from the forum. Please help me clear my fog on all these points.
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Jul 28, 2010
I have a service MyService.java in Application "ServiceDemo". The manifest of this application looks like this
CODE:.............
I have another application "CallerService" manifest looks like this
CODE:................
I have an activity from where I m trying to start the service on the click of the button
CODE:................
This fails to work. Says "unable to start service intent"
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Sep 6, 2011
I want to use my android device (4G Systems One Tab) to remotely execute a batch file on my PC via WIFI-Connection.
I want to have an Icon on my homescreen and when its clicked the batch-file on the desktop computer is executed. (no feedback or output needed, this is all done by the batch).
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Sep 28, 2010
This is the class that calls my Service:
public class TicketList extends ListActivity {
private ArrayList<Tickets> alTickets = new ArrayList<Tickets>();
private boolean listCreated = false;
private static Drawable background = null;
private Resources res;
private Tickets ticket = null;
private TicketConnector localService;
[Code]
Here is the output of LogCat at verbose mode while activating the TicketList Activity:
09-28 23:22:11.420: INFO/ActivityManager(795): Starting activity: Intent { cmp=org.mw88.cmdb/.gui.TicketListActivity }
09-28 23:22:12.340: WARN/ActivityManager(795): Binding with unknown activity: android.os.BinderProxy@4410bf30
09-28 23:22:16.090: INFO/ActivityManager(795): Displayed activity org.mw88.cmdb/.gui.TicketListActivity: 4606 ms (total 4606 ms)
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Jul 5, 2010
I am a newbie in android and i had a question whether i should use a service or thread for http connection and what will be the advantage of using a service over a thread or viceversa. Please help me out with this.
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May 26, 2010
I have followed the Local Service example provided by Google, but my Context::bindService(...) always returns false and there is Service Connection::onServiceConnected is also never called. I understand that Context::bind Service() returns immediately, but my Service Connection object is never triggered. I don't know if these apply My activity is running inside a tabHost and I was wondering if that can affect service binding in any way. The Service itself may have a problem, but I can call start service to the same service with the same Intent and it works as expected. Does anyone have experience with this? Please help me out.
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Nov 12, 2010
Iam connection to services trougth my app, I woul like to check if the connections gets broken, alert a message than.
Or is this taken carre of in android? If not, How should I take care of it? is there a timer?
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Jun 30, 2009
I'm looking for a protocol to secure a connection between a mobile device and a web service. I want to ensure that only the mobile device can perform actions on the web service and vice versa. Data doesn't need to be encrypted. I know Oauth, but it seems that it's more used to secure connections when you got 3 different entities (Server, Consumer and Auth). Here, the Consumer and the User would be the same person. Is there a simple protocol to do that (without requiring the user to login and then authorize the access token like it is the case for Oauth)? I need to use it on different plateforms, so the protocol needs to be available at least on iPhone and PHP.
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Aug 4, 2010
Most of the time the data connection works fine. But if I go into an area with no cell phone reception for a little while, once I come out into a full-bars area where data normally works, my data connection never resumes. Once that happens, I can make calls just fine, but can't use the internet/market/etc. The only thing that solves this problem is to go to network settings, enable 2G networks only, then turn that setting off. That is a huge pain, obviously. Has anyone else had this problem? This was happening with my old SIM, so I had T-mobile give me a brand new one, but it is still happening.
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Aug 31, 2009
Of course i don't know google's plan. i just hope it. through emulation though.
how about android-sdk for chrome application? the idea is just recompiling to make execution file for google chrome os.
how about the sdk for windows? it's for windows platform.
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Sep 1, 2010
There is a user input then on submit pass the search keywords to the db server and return the results (the db server has to be external by the way). Could i pass the search query to server side (php) and get the php script to execute the queries and return the scripts output?
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Jun 1, 2009
I would like to execute opcodes directly against the running Dalvik VM instance from within my application on Android. I'm looking for something similar to the C asm function. I have a list of opcodes for dalvik, but I am unfamiliar with how to either execute them directly, or write them out to .class files and execute them against some sort of VM CLI command like dalvikvm from within a running application.
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Nov 3, 2009
I've been doing Android application development for Android 1.5 on Debian etch (4.0), and things were going okay. I then tried upgrading the SDK to support more recent platforms. The problem is that the vast majority of the tools that are executables (I'm not counting shell scripts) seem to now depend on glibc >= 2.4. When trying to execute them, or passing them to ldd, I get an error like:
./aapt: /lib/tls/i686/cmov/libc.so.6: version `GLIBC_2.4' not found (required by ./aapt)
On Debian, the file /lib/tls/i686/cmov/libc.so.6 is provided by the libc6-i686 package, which on etch is version 2.3.6.ds1-13etch7, but on lenny I see that the version has increased to 2.7-18.
I can think of a few workarounds: - Copy the required libraries from a supported platform and point to them with LD_LIBRARY_PATH when using the affected executables. - Download the sources for the tools (e.g. http://android.git.kernel.org/?p=platform/frameworks/base.git;a=tree;...) and build my own local versions for Debian etch. - Give up using Debian etch and switch to another platform.
All of these are potentially viable alternatives for me, so this isn't a show stopper, and indeed http://developer.android.com/sdk/requirements.html says that it's only tested for GNU/Linux on Ubuntu Hardy Heron, which uses version 2.7-10ubuntu5. Nevertheless, it's somewhat annoying, and I'm wondering if anyone has any thoughts, or if the Android team even knows of the issue. I'm guessing that sometime in the transition from 1.5 to 1.6, they switched from an earlier Ubuntu version (I have to go back to Dapper, which uses 2.3.6-0ubuntu20.5, to find a pre-2.4 version) to Hardy, and this was just a side effect. But I'd be surprised if there was anything specific in the source that really required libc 2.4, and it's possible that if they were just building with an appropriate compiler flag that backwards compatibility could be maintained.
This affects all platform-specific tools for platforms >= android-1.6 (so aapt, aidl, and dexdump), and it affects all platform-agnostic tools (except for hprof-conf and mksdcard; so adb, dmtracedump, emulator, sqlite3, and zipalign) installed with the new modular sdk download (android-sdk_r3-linux.tgz) available starting in the android 1.6 timeframe (the corresponding tools from the android 1.5 timeframe in the monolithic SDK download of android-sdk-linux_x86-1.5_r3.zip work fine).
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Aug 24, 2010
So basically I would like my app to read info from a database, this info would be a string that is valid java code. Once read, I would like my app to execute this string as if it were code. Is there any functionality packaged with the android sdk that supports this?
Essentially I want the phone to populate some data with information queried from a database. One of these pieces of information would be a statement like: "return data.ZombieKillTotal >= 100000;"
Which would be used inside a statement like:
CODE:......
I just don't know what to use for 'ExecStringAsCode':
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Feb 9, 2009
I need to customize the launcher application. I built it from the android source, and installed it to the emulator successfully(By renaming its package name to solve signing conflicts). When I tried to run my build, an exception occurred, and I can't find where it actually from because it seems to be from an internal thread.After an whole day trying, I found that the exception is thrown by the line in Launcher.java possibly: setContentView(R.layout.launcher)Does anyone have any suggestion?
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Apr 2, 2013
I need to execute following command in my app.
command: echo "1" > /sys/manager0/enable
I tried this with following code in my app.
Process p = Runtime.getRuntime().exec("su");
DataOutputStream stdin = new DataOutputStream(p.getOutputStream());
String cmd = "echo "1" /sys/manager0/enable";
stdin.writeBytes(cmd+"
");
There is no error and app executed perfectly but there is no change in the /sys/manager0/enable
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Feb 7, 2012
i want to develop a android application named letC ,the main moto of the app is the user has to write c code and has to execute with in the application.
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Nov 18, 2009
I would like to know how to execute code before exiting application. My application is composed of several activities. When the user starts the application (from the launcher menu or from a notification in the status bar), he goes in an InitActivity where I process some initializations. From user experience, application always restarts. One of these initializations is to init a network manager and start a thread that periodically sends a network request to notify a server that application is active.
I need to process some end operations, like stopping this thread when user quits application, for example by pressing the HOME key or BACK key when he's in the root activity. However, when the user press the HOME key, application is still running in background.
Q1 : is it possible to execute code when exiting application (I see the onTerminate() method of the class Application but it seems not to be always called)?
Q2 : Is it possible to force application exit (activity method finish () only destroy the current activity, not the application)?
Q3 : Is it possible to handle HOME key press (onKeyDown() is not called when this button is pushed)?
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Apr 4, 2010
I have a problem with my application. During the execution of it, I have some buttons which execute other activities when I click on them. The way I am realising it is:
private OnClickListener scaleImage = new OnClickListener() { public void onClick(View v) { Intent intent = new Intent(); intent.setClass(main.this, Scale.class); startActivity(intent);
update(); }
};
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Sep 16, 2009
I'm working on a G1 rooted. I have to implement program that execute "Root Explorer". I have write this code:
Process p;
try { p = Runtime.getRuntime().exec("su");
// OK DataOutputStream os = new DataOutputStream(p.getOutputStream());
os.writeBytes("echo "HELLO!!!!!!!!" >/system/test.txt");
os.writeBytes("exit"); os.flush();
// ERROR File dir = new File("/data"); String [] list = dir.list();
Log.v("TEST]", String.valueOf(list.length));
try { p.waitFor(); int exit = p.exitValue();
if (exit != 255) { Log.v("TEST]", "ok");
} else { Log.v("TEST]", "Error");
} } catch (Exception e) { Log.v("TEST]",e.getMessage());
} } catch (Exception e) { Log.v("TEST]",e.getMessage());
}
I use Superuser.apk for execute "su" command. My program write file test.txt in /system but statement Log.v("TEST]", String.valueOf(list.length)); return value 0.
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Oct 26, 2010
I am trying to upload a image file to server and get back a JSON Object. But an IOException was thrown out. Following is my codes, can anybody have a look at them?
CODE:.....................
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Dec 14, 2009
I am using sqlite db in my app. i am able to create db and table and execute queries. But I wanted to know where is the sqlitedb created, so that I can check them from commandine. where doed that android store ? I searched, could not find anything on that name in my pc, does android encrypt the name of the db file ?
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Aug 27, 2010
There are all of these app's out there that allow you to control your computer from your phone (using VNC and others). This is all well and good....but there are no shortcuts to do anything on these apps. Whatever you are trying to do on your computer takes way too many screens/clicks to be truly efficient by using your phone. You most certainly are able to do it with your phone.....but hell...it was way more complicated than it had to be.
DOES BELOW APP EXIST?
I would LOVE to just touch a shortcut on my home screen that would send a couple of keystrokes to my computer. Or telling my computer to open a particular program from a shortcut created on my android phones Home screen. This would be amazing. I could tell my computer to run whatever task from my phone QUICKLY...without having to jump hoops through screenshots/mouseclicks/keyboard on VNC app's......
Using this, you would no longer need all these separate video/music player control apps...you could just wire hotkeys/scripts to be run to control ANYTHING. I could send a keystroke to minimize/maximize a window....pause iTunes....Give a song 3 star rating....open a particular site...
I'm just trying to turn my phone into a much better remote for my computer.....all current apps seem to fail horribly.
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Jan 21, 2010
I have a gridView that I display in a popupwindow (the gridview is in a transparent layout, which inherits from linearlayout and just has a partially transparent background). I can never get this GridView's OnItemClick to execute. When I touch an image in my gridview it appears to be clicked (image bachgrond changes), but OnItemClick is not being called.
Below is the code for my Adapter and my popupview containing the gridView.
CODE:................
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Nov 24, 2010
How to execute the test cases defined in /external/opencore/engines/player/test/src in the donut code? I have seen the PVplayer documentation , but that does not provide any information. I am trying to run an SDP file in the PVplayer.
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Jul 15, 2010
Are Activities in the background considered "running" (and can execute code) or are they in a suspended state?
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Jul 29, 2010
I'm trying to execute code from Android's help page, but it doesn't work for me:
CODE:..........
When I execute task, doInBackground is invoked fine, but onPostExecute is never invoked. Tested on Milestone with 2.1 OS
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Jun 10, 2009
I have a problem. I'm working with adb shell and I have to execute this command : "# chmod -R 777 /data" but SO said : "Bad usage". Can I have a help? How do to execute chmod recursively in a directory?
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Apr 27, 2013
I Want to run This File in my phone (via terminal emulator).
but after type ./amxxpc i have error
line 1: syntax error: unexpected "("
File which I Want to start is in scripting.zip
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Apr 6, 2009
I am writing a hybrid web/native app and ran into issue. My app downloads a music file via Java code, and needs to update a Javascript download progress bar in the WebView in real time.
My understanding is the only way to call Javascript from Java is via the WebView's loadUrl method.
CODE:................
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