hey guys,
Building an app that runs a ping command at the moment and I can't quite get it to work. If I modify the command to something that isn't a terminal command then it'll output my error statement but i can't get it to display the ping output. any help would be awesome. I know my outputs for my error are bad but it's an easy way to determine what path it's outputting.
package com.mycompany.myapp;
import android.app.*;
import android.os.*;
import android.view.*;
import android.widget.*;
import java.io.*;
import java.lang.Process;
public class MainActivity extends Activity
{
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
TextView Text = new TextView(this);
Runtime runtime = Runtime.getRuntime();
try
{
Process proc = runtime.getRuntime().exec("system/bin/ping 192.168.1.1");
BufferedReader in = new BufferedReader(
new InputStreamReader(proc.getInputStream()));
String line = "null";
while ((line = in.readLine()) != null) {
Text.setText(in.readLine());
}
}
catch (Exception e)
{
String line="55";
Text.setText(line);
}
setContentView(Text);
}
}
Thanks for any help you guys can give me,
Adam
Hey,
Try using "system/bin/ping -c 1 192.168.1.1" instead.
And then add this line just after that:
Code:
proc.waitFor();
and while reading the output of the ping you might want to do it like this maybe?
Code:
String line = "";
String result = "";
while (line != null)
{
result = result + "\n" + line;
line = in.readLine();
}
Text.setText(result);
If you want to ping more than 1 packet I think it would be better to make a new thread and do proc.waitFor() in that thread. Then send a message using a handler to set the output of the ping to the TextView
k i have done that and that does make more sense but Im still getting a black screen on the output. i am testing on a Sony tab s and using AIDE (on the device) cause my eclipse is broken. this is how my code looks now,
package com.mycompany.myapp;
import android.app.*;
import android.os.*;
import android.view.*;
import android.widget.*;
import java.io.*;
import java.lang.Process;
public class MainActivity extends Activity
{
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
TextView Text = new TextView(this);
Runtime runtime = Runtime.getRuntime();
try
{
Process proc = runtime.getRuntime().exec("system/bin/ping 192.168.1.1");
BufferedReader in = new BufferedReader(
new InputStreamReader(proc.getInputStream()));
String line = "null";
while ((line = in.readLine()) != null) {
Text.setText(in.readLine());
}
}
catch (Exception e)
{
String line="55";
Text.setText(line);
}
setContentView(Text);
}
}
Is there anything else I could be missing??
Thanks,
Adam
Hey, I think you posted the same code again.
I am not sure if you can read the process stream before it is complete and ping does take a long time to complete. So your main thread is blocking on it and it doesn't get to executing the setContentView.
Thats why I think going for a seperate thread is a better option.
so it would be better to put the ping into a new class and call on it when i need it??
Not a seperate class, a seperate thread to be more specific.
Even if you do put the ping code in a seperate class' method and call that method in onCreate it will still run on the your applications main thread.
What I was trying to say is something along the lines of the following code:
Code:
private TextView textView;
private Process process;
private Handler handler;
private Thread pingThread;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
textView = new TextView(this);
textView.setText("Pinging...");
setContentView(textView);
try
{
process = Runtime.getRuntime().exec("system/bin/ping -c 5 192.168.1.1");
handler = new Handler()
{
@Override
public void handleMessage(Message msg)
{
try
{
BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
String line = "";
String result = "";
while(line != null)
{
result = result + "\n" + line;
line = reader.readLine();
}
reader.close();
textView.setText(result);
}
catch(Exception e)
{
e.printStackTrace();
textView.setText("Error");
}
}
};
pingThread = new Thread()
{
@Override
public void run()
{
try
{
process.waitFor();
}
catch(Exception e)
{
e.printStackTrace();
}
handler.sendEmptyMessage(0);
}
};
pingThread.start();
} catch (Exception e)
{
e.printStackTrace();
}
}
I am not sure if this is exactly how you want your app to behave. There might be a better way of doing what you want than what I have suggested but I tested the above code and it works for me.
thats wicked, basically what want my program to do is to run a ping command through a usb to rj45 adapter. at the moment I just need it to do the ping command through wifi and once that was working I was going to set it up to go through usb.
I wonder if there's something I'm doing wrong like I'm build the apk in AIDE on the tablet or something, cause I'm still getting a black screen when booting the app.
If I error the code up a bit, Like put "system/bin/pi ....." instead I do get pinging on the app but no error output and if the code is fine then nothing displays
That is very strange :S.
If you use the incorrect command it works fine but when you use the correct command it doesn't?
Can you post your code? or provide more details if possible?
the code is just the code you posted cause I thought if a I could get it working with that code then modify it to what it needs to do, when the command is incorrect it displays "ping....." but doesn't display an error, I'm going to install eclipse and build the package with that and see how it goes. did you test on a tablet and what did you use to deploy the package?
Adz117 said:
the code is just the code you posted cause I thought if a I could get it working with that code then modify it to what it needs to do, when the command is incorrect it displays "ping....." but doesn't display an error, I'm going to install eclipse and build the package with that and see how it goes. did you test on a tablet and what did you use to deploy the package?
Click to expand...
Click to collapse
I think i know whats happening. It isnt the Ide and using eclipse wont make much of a difference.
Are you usIng something like -c 5 in the ping command? Cause if you aren't i think ping is Going to take a really long time and all you'll see on the screen is "Pinging..."
Yea I have got that in the command, when the code is correct and working I dont get anything all I get is a black screen. Its when I error the command up a bit that I get pinging
Sent from my Sony Tablet S using XDA
hey guys,
just got eclipse running and tested it on an avd emulator and it runs perfect, so the question is what would cause it not to run on my tablet?
I have no idea! I don't have access to an Android Tablet, so I can't test it out! I tested it out on my phone too and it works just fine.
One thing I can suggest though is:
Put log statements throughout the program to signify where the the control has reached. Then run it on your tablet. That should shed some light on where the code is failing on your tablet.
tested it on my phone which is running 2.3 and it failed on there as well, "ping......" would pop up for about a second then disappear, also if I use a command like ls instead of ping on my tablet it will work perfectly fine so I'm guessing for some reason past android 2.1 it doesn't like the ping command. any ideas?
I tested it out on phone with 2.2. Did you try putting log statements and checking where it is failing.
You could also add breakpoints in your code and run it?
I am creating a little app that will let a user read what's in a certain textfile in /data/local, edit it, and then save it. I have gotten everything to work by using some tutorials here and there, but there's still something not working.
Root access has been achieved, and writing/reading the file is done too, but when pressing the "Write" button, I get a toast saying "open failed: EACCES (Permission denied)". Google unfortunately didn't help me much on this one. Also, I am using the WRITE_EXTERNAL_STORAGE permission.
Code:
Code:
package bas.sie.hai;
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
import com.actionbarsherlock.app.SherlockActivity;
public class DataLocalActivity extends SherlockActivity {
EditText txtData;
Button btnReadSDFile;
Button btnWriteSDFile;
Button btnReadSkipFile;
Button btnWriteSkipFile;
Button btnClearScreen;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Process p;
try {
// Preform su to get root privledges
p = Runtime.getRuntime().exec("su");
// Attempt to write a file to a root-only
DataOutputStream os = new DataOutputStream(p.getOutputStream());
os.writeBytes("echo \"Do I have root?\" >/system/sd/temporary.txt\n");
// Close the terminal
os.writeBytes("exit\n");
os.flush();
try {
p.waitFor();
if (p.exitValue() != 255) {
// TODO Code to run on success
Toast.makeText(this, "root", Toast.LENGTH_LONG);
}
else {
// TODO Code to run on unsuccessful
Toast.makeText(this, "No root", Toast.LENGTH_LONG);
}
} catch (InterruptedException e) {
// TODO Code to run in interrupted exception
Toast.makeText(this, "No root", Toast.LENGTH_LONG);
}
} catch (IOException e) {
// TODO Code to run in input/output exception
Toast.makeText(this, "NO root", Toast.LENGTH_LONG);
}
if(!Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())){
Toast.makeText(this, "External SD card not mounted", Toast.LENGTH_LONG).show();
}
txtData = (EditText) findViewById(R.id.txtData);
btnReadSDFile = (Button) findViewById(R.id.btnReadSDFile);
btnReadSDFile.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// write on SD card file data in the text box
try {
File myFile = new File("/data/local/move_cache.txt");
FileInputStream fIn = new FileInputStream(myFile);
BufferedReader myReader = new BufferedReader(
new InputStreamReader(fIn));
String aDataRow = "";
String aBuffer = "";
while ((aDataRow = myReader.readLine()) != null) {
aBuffer += aDataRow + "\n";
}
txtData.setText(aBuffer);
myReader.close();
Toast.makeText(getBaseContext(),
"Done reading from SD: 'move_cache.txt'",
Toast.LENGTH_SHORT).show();
} catch (Exception e) {
Toast.makeText(getBaseContext(), e.getMessage(),
Toast.LENGTH_SHORT).show();
}
}
});
btnWriteSDFile = (Button) findViewById(R.id.btnWriteSDFile);
btnWriteSDFile.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// write on SD card file data in the text box
try {
File myFile = new File("/data/local/move_cache.txt");
myFile.createNewFile();
FileOutputStream fOut = new FileOutputStream(myFile);
OutputStreamWriter myOutWriter = new OutputStreamWriter(
fOut);
myOutWriter.append(txtData.getText());
myOutWriter.close();
fOut.close();
Toast.makeText(getBaseContext(),
"Done writing to SD: 'move_cache.txt'",
Toast.LENGTH_SHORT).show();
} catch (Exception e) {
Toast.makeText(getBaseContext(), e.getMessage(),
Toast.LENGTH_SHORT).show();
}
}
});
btnReadSkipFile = (Button) findViewById(R.id.btnReadSkipFile);
btnReadSkipFile.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// write on SD card file data in the text box
try {
File myFile = new File("/data/local/skip_apps.txt");
FileInputStream fIn = new FileInputStream(myFile);
BufferedReader myReader = new BufferedReader(
new InputStreamReader(fIn));
String aDataRow = "";
String aBuffer = "";
while ((aDataRow = myReader.readLine()) != null) {
aBuffer += aDataRow + "\n";
}
txtData.setText(aBuffer);
myReader.close();
Toast.makeText(getBaseContext(),
"Done reading from SD: 'skip_apps.txt'",
Toast.LENGTH_SHORT).show();
} catch (Exception e) {
Toast.makeText(getBaseContext(), e.getMessage(),
Toast.LENGTH_SHORT).show();
}
}
});
btnWriteSkipFile = (Button) findViewById(R.id.btnWriteSkipFile);
btnWriteSkipFile.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// write on SD card file data in the text box
try {
File myFile = new File("/data/local/skip_apps.txt");
myFile.createNewFile();
FileOutputStream fOut = new FileOutputStream(myFile);
OutputStreamWriter myOutWriter = new OutputStreamWriter(
fOut);
myOutWriter.append(txtData.getText());
myOutWriter.close();
fOut.close();
Toast.makeText(getBaseContext(),
"Done writing to SD: 'skip_apps.txt'",
Toast.LENGTH_SHORT).show();
} catch (Exception e) {
Toast.makeText(getBaseContext(), e.getMessage(),
Toast.LENGTH_SHORT).show();
}
}
});
btnClearScreen = (Button) findViewById(R.id.btnClearScreen);
btnClearScreen.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// clear text box
txtData.setText("");
}
});
}// onCreate
}
Thanks in advance,
Bas
Dooder
1. Chaper 8. Have mercy on yourself.
2. coloredlogcat.py
3. why not
Code:
e.printStackTrace()
but
Code:
Toast.LENGTH_SHORT
is beyond me
4.
Code:
android.permissions.WRITE_EXTERNAL_STORAGE
does not equal permissions to write to
Code:
/data/local
5.
Google unfortunately didn't help me much on this one
Click to expand...
Click to collapse
Moment of honesty. G-FU sucks or you just gave up?
I am an a-hole for a reason here. All you need to know is out there. No one else will hit you harder on the head with a RTFM board than a coder.
el_bhm said:
Dooder
1. Chaper 8. Have mercy on yourself.
2. coloredlogcat.py
3. why not
Code:
e.printStackTrace()
but
Code:
Toast.LENGTH_SHORT
is beyond me
4.
Code:
android.permissions.WRITE_EXTERNAL_STORAGE
does not equal permissions to write to
Code:
/data/local
5.
Moment of honesty. G-FU sucks or you just gave up?
I am an a-hole for a reason here. All you need to know is out there. No one else will hit you harder on the head with a RTFM board than a coder.
Click to expand...
Click to collapse
The code is mostly from a tutorial, with a few edits. Why use stackTrace on a test? Also, I test on the device for reliability and root access. It's easier to see a Toast there, so didn't remove it.
About the Chapter 8: Yes, onClickListener is not the best way (skimmed over it, it's 1:26 AM here), but here too: optimizations later.
About Google: I Googled, didn't find anything that really could help me along so that I understood, asked in three other places. SO was someone who didn't reply later on, Google Groups said my permission was wrong, as I said WRITE_TO_EXTERNAL_STORAGE. I corrected that, saying I had the right permission but I wrote down the wrong one (hastily. Stupid, I know...), and here, on XDA, you're the only post yet. I have waited between posts to post it on all those boards, as I'm not an a**hole.
If any more information is needed, just tell me.
Bas
EDIT: Missed a bit. About the writing: I know now, it's just that I have no idea how to proceed from root access to writing there. And I do hope to learn how to do it.
1. You'd rather want to write into
Code:
/data/data/[package]/
Is there any particular reason you want to write directly to local? Some "system wide" app? From code I understand this is some tabbed app(?). Or is it just test for root?
Unless you have somewhat extensive knowledge of Linux and programming, don't go into root access. Make yourself a favour and get as much knowledge of objective programming first. It seems it was inspired by Outler doing root in part two. He's doing ADK in part 3. These are not easy things.
2. Are you sure you are writing anything? With this code I am getting nowhere actually.
I have not written anything with root (main reason it caught my attention). My best guess is though, permissions are not escalated for objects you are creating while setting up listeners for buttons.
From brief reading of the code and documentation it seems that you are escalating permissions for Process p which you works in conjunction with DataOutputStream. While setting up listeners you are not doing anything with p anymore.
My best guess permissions escalation would apply to the whole package, but as I see it, it does not happen.
EDIT: Besides, keep in mind you are writing a file via echoing through shell. Which is not equivalent of writing through instances of classes in onClickListeners
3. As to why printStackTrace()
Unless you are running Windows(which for Android development I really feel you should not) with coloredlogcat.py you'll have much more comprehensive output to troubleshoot the app. Line where problem occurs. Where it originates, where it goes, etc.
There should be some interpreter of python for Windows, but I don't know how the script will behave though.
4. Inserting logcat output is always helpful.
Providing the layout is always helpful.
el_bhm said:
1. You'd rather want to write into
Code:
/data/data/[package]/
Is there any particular reason you want to write directly to local? Some "system wide" app? From code I understand this is some tabbed app(?). Or is it just test for root?
Unless you have somewhat extensive knowledge of Linux and programming, don't go into root access. Make yourself a favour and get as much knowledge of objective programming first. It seems it was inspired by Outler doing root in part two. He's doing ADK in part 3. These are not easy things.
2. Are you sure you are writing anything? With this code I am getting nowhere actually.
I have not written anything with root (main reason it caught my attention). My best guess is though, permissions are not escalated for objects you are creating while setting up listeners for buttons.
From brief reading of the code and documentation it seems that you are escalating permissions for Process p which you works in conjunction with DataOutputStream. While setting up listeners you are not doing anything with p anymore.
My best guess permissions escalation would apply to the whole package, but as I see it, it does not happen.
EDIT: Besides, keep in mind you are writing a file via echoing through shell. Which is not equivalent of writing through instances of classes in onClickListeners
3. As to why printStackTrace()
Unless you are running Windows(which for Android development I really feel you should not) with coloredlogcat.py you'll have much more comprehensive output to troubleshoot the app. Line where problem occurs. Where it originates, where it goes, etc.
There should be some interpreter of python for Windows, but I don't know how the script will behave though.
4. Inserting logcat output is always helpful.
Providing the layout is always helpful.
Click to expand...
Click to collapse
The files I'm writing are supposed to be in /data/local. Writing anywhere else would obviously kind of defeat the purpose.
I don't really have knowledge of Linux, didn't know you had to to be able to write a file. On the other hand, I had basically no knowledge of Android when I started writing my first app, and that worked out quite well, if I do say so myself.
About the permissions for the writing: I think you are right about that. I simply followed a tutorial, added SU permission check, and changed the path. Then tried to get that working.
I am running Windows. I do have Ubuntu on a bootable USB and on my HDD, but on the stick it has a low res and doesn't save any configs (which is not that weird), and on my HDD it suddenly fails to boot, and WUBI won't let me uninstall...
Plus, too much fiddling. Why is it so hard to get Flash installed, for God's sake?
About the LogCat output: I'm not really one to hook my phone up to my PC for that, unless no other solution is possible. Not because I'm lazy, but because my PC generally takes a couple of minutes to recognize the phone, open Explorer, etc. when I am doing a couple of other things.
I guess I'll just give up. Do you have any sites/places where I can gain some valuable knowledge about this?
Bas
About that permission check. Well, it passes the test. Thing is, there is no
Code:
/system/sd/temporary.txt
after I drop to adb shell.
Is that path the one you had set? IIRC Samsung does something funky with internal/external memory mounts in their devices. Is that path valid at all?
I'm guessing echo fails but passes the su test. So permissions are good, it seems.
Theoretically you can try parsing contents you need to that command you are basically executing. If there is a file in
Code:
/system/sd/
You could write file you need as temps wherever you have rights, then gain permissions and copy the contents via
Code:
cat [path_to_temp_file] > /data/local/file
Going offtopic.
Never. Ever use WUBI. Seriously. Just read about install process. If it fails on normal CD, download alternate. A bit more daunting but still should be manageable. Or get other distro like Mint.
It's enough to copy file to
Code:
~/.mozilla/plugins
. FF and Opera should easily use it.
Or just install
Code:
ubuntu-restricte-extras
. It should have flash.
You can also get to your phone over wifi. Just get adbWireless from market.
Knowledge? On what?
Programming? Read documentation of android. Many tutorials. Really easy to read (compared to other OS docs), extensively described.
Stackoverflow
Get any O'reily books.
Android? See above.
Linux? Stop expecting from any distro to behave like Windows and use it as you would know nothing about PC. You'll save yourself much time and frustration.
webup8, omgubuntu, planet-ubuntu. Enough there to start.
el_bhm said:
About that permission check. Well, it passes the test. Thing is, there is no
Code:
/system/sd/temporary.txt
after I drop to adb shell.
Is that path the one you had set? IIRC Samsung does something funky with internal/external memory mounts in their devices. Is that path valid at all?
I'm guessing echo fails but passes the su test. So permissions are good, it seems.
Theoretically you can try parsing contents you need to that command you are basically executing. If there is a file in
Code:
/system/sd/
You could write file you need as temps wherever you have rights, then gain permissions and copy the contents via
Code:
cat [path_to_temp_file] > /data/local/file
Going offtopic.
Never. Ever use WUBI. Seriously. Just read about install process. If it fails on normal CD, download alternate. A bit more daunting but still should be manageable. Or get other distro like Mint.
It's enough to copy file to
Code:
~/.mozilla/plugins
. FF and Opera should easily use it.
Or just install
Code:
ubuntu-restricte-extras
. It should have flash.
You can also get to your phone over wifi. Just get adbWireless from market.
Knowledge? On what?
Programming? Read documentation of android. Many tutorials. Really easy to read (compared to other OS docs), extensively described.
Stackoverflow
Get any O'reily books.
Android? See above.
Linux? Stop expecting from any distro to behave like Windows and use it as you would know nothing about PC. You'll save yourself much time and frustration.
webup8, omgubuntu, planet-ubuntu. Enough there to start.
Click to expand...
Click to collapse
Well, this is intended for AOSP ROMs, so I was thinking that there shouldn't be any problem in trying to write a file in that directory. But yes, Samsung does do some weird things...
About the copying and then moving from there: Might be a good idea if I can figure it out. However, do you think that will suddenly work?
The install at first was planned to be from the bootable stick I have, but when I read about WUBI, it seemed so easy. Easy to deinstall Ubuntu, too. Anyhow, I think a friend kind of borked it not too long ago. Pressed the wrong button somewhere, might have slightly affected the MBR (Windows boot animation is also gone now, back to Vista ).
Could you explain a bit more about the Flash install? It seemed (and truly was) so tedious at the time for something that was still slow and laggy... In my experience, don't get me wrong.
I have used AirDroid for example for reaching my phone, good suggestion there.
On the topic of developing (circling back around ), I will be looking into your suggestions. I do use Google and tutorials a lot, and SO has been quite a good help in that. Also, asking people to help personally (GTalk, for example, or PM on a forum), has got me quite a long way.
And using Ubuntu like I know nothing: It was quite different . I noticed that almost all of my knowledge was rendered useless in a matter of minutes haha. Bad thing is I did still think I knew, I guess. Led to frustration over it being so annoying. I guess it takes a lot of getting used to.
If that "temporary.txt" file is created, I don't see why it should fail since it passes the Root check.
instead of
Code:
cat
you may as well use
Code:
cp
which is basically command for copy.
About Flash (on which even Adobe is dropping a ball since they have balls to finally admit it's a joke anyway) you can read here.
https://help.ubuntu.com/community/RestrictedFormats
Alternate version of installer never failed me so far.
el_bhm said:
If that "temporary.txt" file is created, I don't see why it should fail since it passes the Root check.
instead of
Code:
cat
you may as well use
Code:
cp
which is basically command for copy.
About Flash (on which even Adobe is dropping a ball since they have balls to finally admit it's a joke anyway) you can read here.
https://help.ubuntu.com/community/RestrictedFormats
Alternate version of installer never failed me so far.
Click to expand...
Click to collapse
I'll take a look at using cp. However, it might be some time before I pick this up again. My earlier project has almost been accepted by the person who asked me to make it, so first I'll be busy on that.
But the basic thing here is to create it somewhere else and copy it, right? Let's hope that works, then .
Also, I'll be looking at your suggestions for Flash and the alternate installer, thanks a lot!
Questions or Problems Should Not Be Posted in the Development Forum
Please Post in the Correct Forums & Read the Forum Rules
Moving to Q&A
Hi guys...
Since few weeks now, i'm facing to an unsolvable trouble that prevent me to access to google play (with the famous error "No Connexion"). I spent hard time to search why, tried some fixes found on the web... Nothing works.
This morning, i found with the Android Device-ID application that my "GSF Device-ID" is set to "null" ! Said differently, i'm pretty sure that my device (Samsung Galaxy S2) can't be recognized and identified on Play store because of this, giving me the "No Connexion" error.
Does anybody here know how i could fix this invalid ID (which is confirmed with the *#*#8255#*#* trick : aid:0 (INVALID AID!!!)
Thanks in advance for your help.
cheers
UP.
Nobody can help ? i can't believe it according to the number of gurus here
I am more and more convinced that the secret of this famous GSF ID is jealously guarded by its creators, and finally how to handle it are not or little known ... And for good reason, since this is for Google one of the only way to identify and thus tracking devices safely and reliably. Make it easily editable would be a disaster for them I guess ...
I still dare to hope that some geniuses who frequent this forum have already faced this problem and had pierced the mystery and how to handle this identifier.
I found the beginning of an answer with the sources code of an app "Android ID" :
Code:
private static final Uri URI = Uri.parse("content://com.google.android.gsf.gservices");
private static final String ID_KEY = "android_id";
String getAndroidId(Context ctx) {
String[] params = { ID_KEY };
Cursor c = ctx.getContentResolver()
.query(URI, null, null, params, null);
if (!c.moveToFirst() || c.getColumnCount() < 2)
return null;
try {
return Long.toHexString(Long.parseLong(c.getString(1)));
} catch (NumberFormatException e) {
return null;
}
}
In my case, i get a "null" for GSFID. That means no columns are found in reply to the query.
I have verified this by installing aSQLiteManager on my SGS2, and opening the gservices.db database.
My problem now is to find what are the key fields
that are supposed to be filled in order to have a GSF value returned.
Maybe some of you could provide me this information by having a look to your own configuration.
Thanks in advance.
I've got same problem
My phone is LG Optimus L5 and after I rooted my phone,I've got same problem and I couldn't connect to Google products and my AID's been null!
Hello guys newbie warning
i am working on compiling my own android 4.2.2 system on an allwinner A20 SOC, my problem comes when i try to enable an external usb based (ttyUSB1) GPS which gives an error in logcat of "no AGPS interface in agps_data_conn_open" which i have tracked back to the com_android_server_location_GPSLocationProvider.cpp which is located in directory framework/base/services/jni/
1. i have tested the drivers provided by the vendor and they are working
2. further when i unplug the usb driver it gives a warning of missing hardware of gps therefore i know that my gps is detected atleast
3. i haved check my gps.conf to make sure i am using the right settings according to my area
below is the exact area which gives an error in the above mentioned cpp file
Code:
static void android_location_GpsLocationProvider_set_agps_server(JNIEnv* env, jobject obj,
jint type, jstring hostname, jint port)
{
if (!sAGpsInterface) {
ALOGE("no AGPS interface in agps_data_conn_open");
return;
}
const char *c_hostname = env->GetStringUTFChars(hostname, NULL);
sAGpsInterface->set_server(type, c_hostname, port);
env->ReleaseStringUTFChars(hostname, c_hostname);
}
p.s. static const AGpsInterface* sAGpsInterface;