[android-developers] Re: Hello everyone, i am developing a bluetooth app.
Sure, first bluetooth detection on Android emulator is not supported
on Wind7 so i used VirtualBox to run it on Linux2.4, so the bluetooth
features are supported by the Host OS and the emulator, but the thing
is that the app is not detecting any devices (My phone...)
This is my code:
package android.mgo.helloandroid;
import java.util.Set;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.content.Intent;
public class UIdrawingActivity extends Activity implements
OnClickListener {
/** Called when the activity is first created. */
Button startdetectingbtn;
Button clearbtn;
EditText roomnumbertext;
EditText bluetoothdetect;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
bluetoothdetect = (EditText)findViewById(R.id.detectedsignal);
clearbtn = (Button)findViewById(R.id.clearbtn);
View startdetectingbtn = findViewById(R.id.startdetectingbtn);
startdetectingbtn.setOnClickListener(this);
clearbtn.setOnClickListener(new OnClickListener() {
// clear the text boxes
@Override
public void onClick(View v) {
bluetoothdetect.setText();
}
});}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.startdetectingbtn:
EditText bluetoothtext =
(EditText)findViewById(R.id.detectedsignal);
// Getting the Bluetooth adapter
BluetoothAdapter adapter =
BluetoothAdapter.getDefaultAdapter();
bluetoothtext.append(\nAdapter: + adapter);
// Check for Bluetooth support in the first place
// Emulator doesn't support Bluetooth and will return null
if(adapter==null) {
bluetoothtext.append(\nBluetooth NOT supported. Aborting.);
return;
}
else{
// Starting the device discovery
bluetoothtext.append(\nStarting discovery...);
adapter.startDiscovery();
bluetoothtext.append(\nDone with discovery...);
// Listing paired devices
bluetoothtext.append(\nDevices Paired:);
SetBluetoothDevice devices =
adapter.getBondedDevices();
for (BluetoothDevice device : devices)
{
bluetoothtext.append(\nFound device: +
device);
}
}
}
}
}
and the following is Manifest.xml file:
?xml version=1.0 encoding=utf-8?
manifest xmlns:android=http://schemas.android.com/apk/res/android;
package=android.mgo.helloandroid
android:versionCode=1
android:versionName=1.0
uses-sdk android:minSdkVersion=3 /
application
android:icon=@drawable/ic_launcher
android:label=@string/app_name
activity
android:label=@string/app_name
android:name=.UIdrawingActivity
intent-filter
action android:name=android.intent.action.MAIN /
category
android:name=android.intent.category.LAUNCHER /
/intent-filter
/activity
/application
uses-permission android:name=android.permission.BLUETOOTH /
uses-permission
android:name=android.permission.BLUETOOTH_ADMIN /
/manifest
On Feb 9, 6:29 pm, TreKing treking...@gmail.com wrote:
On Thu, Feb 9, 2012 at 5:42 AM, Soyer mblack...@gmail.com wrote:
the issue now is that i don't know why it is not listing any detected
devices.
Any Ideas?
Elaborate on your problem. There is almost no information here for anyone
to help you.
---
--
TreKing http://sites.google.com/site/rezmobileapps/treking - Chicago
transit tracking app for Android-powered devices
--
You received this message because you are subscribed to the Google
Groups Android Developers group.
To post to this group, send email to android-developers@googlegroups.com
To unsubscribe from this group, send email to
android-developers+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Re: Hello everyone, i am developing a bluetooth app.
Did you try running this in a debugger to see what's going on?
kris
On Thu, Feb 9, 2012 at 9:58 AM, Soyer mblack...@gmail.com wrote:
Sure, first bluetooth detection on Android emulator is not supported
on Wind7 so i used VirtualBox to run it on Linux2.4, so the bluetooth
features are supported by the Host OS and the emulator, but the thing
is that the app is not detecting any devices (My phone...)
This is my code:
package android.mgo.helloandroid;
import java.util.Set;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.content.Intent;
public class UIdrawingActivity extends Activity implements
OnClickListener {
/** Called when the activity is first created. */
Button startdetectingbtn;
Button clearbtn;
EditText roomnumbertext;
EditText bluetoothdetect;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
bluetoothdetect = (EditText)findViewById(R.id.detectedsignal);
clearbtn = (Button)findViewById(R.id.clearbtn);
View startdetectingbtn = findViewById(R.id.startdetectingbtn);
startdetectingbtn.setOnClickListener(this);
clearbtn.setOnClickListener(new OnClickListener() {
// clear the text boxes
@Override
public void onClick(View v) {
bluetoothdetect.setText();
}
});}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.startdetectingbtn:
EditText bluetoothtext =
(EditText)findViewById(R.id.detectedsignal);
// Getting the Bluetooth adapter
BluetoothAdapter adapter =
BluetoothAdapter.getDefaultAdapter();
bluetoothtext.append(\nAdapter: + adapter);
// Check for Bluetooth support in the first place
// Emulator doesn't support Bluetooth and will return null
if(adapter==null) {
bluetoothtext.append(\nBluetooth NOT supported.
Aborting.);
return;
}
else{
// Starting the device discovery
bluetoothtext.append(\nStarting discovery...);
adapter.startDiscovery();
bluetoothtext.append(\nDone with discovery...);
// Listing paired devices
bluetoothtext.append(\nDevices Paired:);
SetBluetoothDevice devices =
adapter.getBondedDevices();
for (BluetoothDevice device : devices)
{
bluetoothtext.append(\nFound device:
+ device);
}
}
}
}
}
and the following is Manifest.xml file:
?xml version=1.0 encoding=utf-8?
manifest xmlns:android=http://schemas.android.com/apk/res/android;
package=android.mgo.helloandroid
android:versionCode=1
android:versionName=1.0
uses-sdk android:minSdkVersion=3 /
application
android:icon=@drawable/ic_launcher
android:label=@string/app_name
activity
android:label=@string/app_name
android:name=.UIdrawingActivity
intent-filter
action android:name=android.intent.action.MAIN /
category
android:name=android.intent.category.LAUNCHER /
/intent-filter
/activity
/application
uses-permission android:name=android.permission.BLUETOOTH /
uses-permission
android:name=android.permission.BLUETOOTH_ADMIN /
/manifest
On Feb 9, 6:29 pm, TreKing treking...@gmail.com wrote:
On Thu, Feb 9, 2012 at 5:42 AM, Soyer mblack...@gmail.com wrote:
the issue now is that i don't know why it is not listing any detected
devices.
Any Ideas?
Elaborate on your problem. There is almost no information here for anyone
to help you.
---
--
TreKing http://sites.google.com/site/rezmobileapps/treking - Chicago
transit tracking app for Android-powered devices
--
You received this message because you are subscribed to the Google
Groups Android Developers group.
To post to this group, send email to android-developers@googlegroups.com
To unsubscribe from this group, send email to
android-developers+unsubscr...@googlegroups.com
For more options, visit this group at
[android-developers] Re: Hello everyone, i am developing a bluetooth app.
Hello Kris, i tried it on a mobile phone (HTC Hero) and no detected
devices were displayed...it's showing the default bluetooth adapter,
and then Start discovering, Done with discovery and at last:
Devices paired: and nothing displayed, though my other
mobile phone is next to it.
On Feb 9, 7:41 pm, Kristopher Micinski krismicin...@gmail.com wrote:
Did you try running this in a debugger to see what's going on?
kris
On Thu, Feb 9, 2012 at 9:58 AM, Soyer mblack...@gmail.com wrote:
Sure, first bluetooth detection on Android emulator is not supported
on Wind7 so i used VirtualBox to run it on Linux2.4, so the bluetooth
features are supported by the Host OS and the emulator, but the thing
is that the app is not detecting any devices (My phone...)
This is my code:
package android.mgo.helloandroid;
import java.util.Set;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.content.Intent;
public class UIdrawingActivity extends Activity implements
OnClickListener {
/** Called when the activity is first created. */
Button startdetectingbtn;
Button clearbtn;
EditText roomnumbertext;
EditText bluetoothdetect;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
bluetoothdetect = (EditText)findViewById(R.id.detectedsignal);
clearbtn = (Button)findViewById(R.id.clearbtn);
View startdetectingbtn = findViewById(R.id.startdetectingbtn);
startdetectingbtn.setOnClickListener(this);
clearbtn.setOnClickListener(new OnClickListener() {
// clear the text boxes
@Override
public void onClick(View v) {
bluetoothdetect.setText();
}
});}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.startdetectingbtn:
EditText bluetoothtext =
(EditText)findViewById(R.id.detectedsignal);
// Getting the Bluetooth adapter
BluetoothAdapter adapter =
BluetoothAdapter.getDefaultAdapter();
bluetoothtext.append(\nAdapter: + adapter);
// Check for Bluetooth support in the first place
// Emulator doesn't support Bluetooth and will return null
if(adapter==null) {
bluetoothtext.append(\nBluetooth NOT supported.
Aborting.);
return;
}
else{
// Starting the device discovery
bluetoothtext.append(\nStarting discovery...);
adapter.startDiscovery();
bluetoothtext.append(\nDone with discovery...);
// Listing paired devices
bluetoothtext.append(\nDevices Paired:);
SetBluetoothDevice devices =
adapter.getBondedDevices();
for (BluetoothDevice device : devices)
{
bluetoothtext.append(\nFound device:
+ device);
}
}
}
}
}
and the following is Manifest.xml file:
?xml version=1.0 encoding=utf-8?
manifest xmlns:android=http://schemas.android.com/apk/res/android;
package=android.mgo.helloandroid
android:versionCode=1
android:versionName=1.0
uses-sdk android:minSdkVersion=3 /
application
android:icon=@drawable/ic_launcher
android:label=@string/app_name
activity
android:label=@string/app_name
android:name=.UIdrawingActivity
intent-filter
action android:name=android.intent.action.MAIN /
category
android:name=android.intent.category.LAUNCHER /
/intent-filter
/activity
/application
uses-permission android:name=android.permission.BLUETOOTH /
uses-permission
android:name=android.permission.BLUETOOTH_ADMIN /
/manifest
On Feb 9, 6:29 pm, TreKing treking...@gmail.com wrote:
On Thu, Feb 9, 2012 at 5:42 AM, Soyer mblack...@gmail.com wrote:
the issue now is that i don't know why it is not listing any detected
devices.
Any Ideas?
Elaborate on your problem. There is almost no information here for anyone
to help you.
---
--
TreKing
Re: [android-developers] Re: Hello everyone, i am developing a bluetooth app.
Oh, you're not using the BluetoothAdapter correctly... You basically call
startdiscovery and then display stuff. That's not how it works. It's an
asynchronous call. You start discovery with .startDiscovery() and then you
have to wait until it's finished. To handle that, you wait for a broadcast
action (ACTION_DISCOVERY_FINISHED) to be sent, you have to register a
broadcastreciever to deal with that.
You can read all about this in the BluetoothAdapter API documentation,
that's where I suggest you start. There's also a Bluetooth demo somewhere,
not sure if it works for more recent devices, but I remember to have gotten
it working on the Hero a long time ago (that being said, BT on the older
HTCs was always somewhat flaky for me).
kris
On Thu, Feb 9, 2012 at 11:13 AM, Soyer mblack...@gmail.com wrote:
Hello Kris, i tried it on a mobile phone (HTC Hero) and no detected
devices were displayed...it's showing the default bluetooth adapter,
and then Start discovering, Done with discovery and at last:
Devices paired: and nothing displayed, though my other
mobile phone is next to it.
On Feb 9, 7:41 pm, Kristopher Micinski krismicin...@gmail.com wrote:
Did you try running this in a debugger to see what's going on?
kris
On Thu, Feb 9, 2012 at 9:58 AM, Soyer mblack...@gmail.com wrote:
Sure, first bluetooth detection on Android emulator is not supported
on Wind7 so i used VirtualBox to run it on Linux2.4, so the bluetooth
features are supported by the Host OS and the emulator, but the thing
is that the app is not detecting any devices (My phone...)
This is my code:
package android.mgo.helloandroid;
import java.util.Set;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.content.Intent;
public class UIdrawingActivity extends Activity implements
OnClickListener {
/** Called when the activity is first created. */
Button startdetectingbtn;
Button clearbtn;
EditText roomnumbertext;
EditText bluetoothdetect;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
bluetoothdetect = (EditText)findViewById(R.id.detectedsignal);
clearbtn = (Button)findViewById(R.id.clearbtn);
View startdetectingbtn = findViewById(R.id.startdetectingbtn);
startdetectingbtn.setOnClickListener(this);
clearbtn.setOnClickListener(new OnClickListener() {
// clear the text boxes
@Override
public void onClick(View v) {
bluetoothdetect.setText();
}
});}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.startdetectingbtn:
EditText bluetoothtext =
(EditText)findViewById(R.id.detectedsignal);
// Getting the Bluetooth adapter
BluetoothAdapter adapter =
BluetoothAdapter.getDefaultAdapter();
bluetoothtext.append(\nAdapter: +
adapter);
// Check for Bluetooth support in the first place
// Emulator doesn't support Bluetooth and will return
null
if(adapter==null) {
bluetoothtext.append(\nBluetooth NOT supported.
Aborting.);
return;
}
else{
// Starting the device discovery
bluetoothtext.append(\nStarting
discovery...);
adapter.startDiscovery();
bluetoothtext.append(\nDone with
discovery...);
// Listing paired devices
bluetoothtext.append(\nDevices Paired:);
SetBluetoothDevice devices =
adapter.getBondedDevices();
for (BluetoothDevice device : devices)
{
bluetoothtext.append(\nFound
device:
+ device);
}
}
}
}
}
and the following is Manifest.xml file:
?xml version=1.0 encoding=utf-8?
manifest xmlns:android=http://schemas.android.com/apk/res/android;
package=android.mgo.helloandroid
android:versionCode=1
android:versionName=1.0
uses-sdk android:minSdkVersion=3 /
application
android:icon=@drawable/ic_launcher
[android-developers] Re: Hello everyone, i am developing a bluetooth app.
so it's an order issue, Could you please instruct me which part should
i change?, because honestly i have read loads of articles and i don't
think i am going anywhere which getting more n more frustrating...
That would be Very Appreciated.
On Feb 9, 8:21 pm, Kristopher Micinski krismicin...@gmail.com wrote:
Oh, you're not using the BluetoothAdapter correctly... You basically call
startdiscovery and then display stuff. That's not how it works. It's an
asynchronous call. You start discovery with .startDiscovery() and then you
have to wait until it's finished. To handle that, you wait for a broadcast
action (ACTION_DISCOVERY_FINISHED) to be sent, you have to register a
broadcastreciever to deal with that.
You can read all about this in the BluetoothAdapter API documentation,
that's where I suggest you start. There's also a Bluetooth demo somewhere,
not sure if it works for more recent devices, but I remember to have gotten
it working on the Hero a long time ago (that being said, BT on the older
HTCs was always somewhat flaky for me).
kris
On Thu, Feb 9, 2012 at 11:13 AM, Soyer mblack...@gmail.com wrote:
Hello Kris, i tried it on a mobile phone (HTC Hero) and no detected
devices were displayed...it's showing the default bluetooth adapter,
and then Start discovering, Done with discovery and at last:
Devices paired: and nothing displayed, though my other
mobile phone is next to it.
On Feb 9, 7:41 pm, Kristopher Micinski krismicin...@gmail.com wrote:
Did you try running this in a debugger to see what's going on?
kris
On Thu, Feb 9, 2012 at 9:58 AM, Soyer mblack...@gmail.com wrote:
Sure, first bluetooth detection on Android emulator is not supported
on Wind7 so i used VirtualBox to run it on Linux2.4, so the bluetooth
features are supported by the Host OS and the emulator, but the thing
is that the app is not detecting any devices (My phone...)
This is my code:
package android.mgo.helloandroid;
import java.util.Set;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.content.Intent;
public class UIdrawingActivity extends Activity implements
OnClickListener {
/** Called when the activity is first created. */
Button startdetectingbtn;
Button clearbtn;
EditText roomnumbertext;
EditText bluetoothdetect;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
bluetoothdetect = (EditText)findViewById(R.id.detectedsignal);
clearbtn = (Button)findViewById(R.id.clearbtn);
View startdetectingbtn = findViewById(R.id.startdetectingbtn);
startdetectingbtn.setOnClickListener(this);
clearbtn.setOnClickListener(new OnClickListener() {
// clear the text boxes
@Override
public void onClick(View v) {
bluetoothdetect.setText();
}
});}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.startdetectingbtn:
EditText bluetoothtext =
(EditText)findViewById(R.id.detectedsignal);
// Getting the Bluetooth adapter
BluetoothAdapter adapter =
BluetoothAdapter.getDefaultAdapter();
bluetoothtext.append(\nAdapter: +
adapter);
// Check for Bluetooth support in the first place
// Emulator doesn't support Bluetooth and will return
null
if(adapter==null) {
bluetoothtext.append(\nBluetooth NOT supported.
Aborting.);
return;
}
else{
// Starting the device discovery
bluetoothtext.append(\nStarting
discovery...);
adapter.startDiscovery();
bluetoothtext.append(\nDone with
discovery...);
// Listing paired devices
bluetoothtext.append(\nDevices Paired:);
SetBluetoothDevice devices =
adapter.getBondedDevices();
for (BluetoothDevice device : devices)
{
bluetoothtext.append(\nFound
device:
+ device);
}
}
}
}
}
and the
Re: [android-developers] Re: Hello everyone, i am developing a bluetooth app.
On Thu, Feb 9, 2012 at 11:44 AM, Soyer mblack...@gmail.com wrote: so it's an order issue, Could you please instruct me which part should i change?, because honestly i have read loads of articles and i don't think i am going anywhere which getting more n more frustrating... That would be Very Appreciated. It's not an order issue. You're thinking that you call .startDiscovery() and then it starts discovering devices and tells you which there are. It doesn't work like that. Discovery can take a long time, tens of seconds into minutes. If your call to .startDiscovery() blocked until the discovery was finished, your program would ANR and crash Instead, when you call .startDiscovery() what happens is that you're asking the operating system start looking for BT devices, when you finish looking for them, broadcast that you're done and I'll ask what you found, even though this will probably take a long time. So you need to register the BroadcastReceiver to handle the Bluetooth discovery finished action. Have you read the BluetoothChat example. I feel like if you had then you wouldn't be asking this, go read that and it should make sense. And if it doesn't then go read about what a BroadcastReceiver is in the first place. Basically: you're writing your code like it runs in a straight line, it doesn't, it runs asynchronously, so you have to structure your code differently. kris -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Hello everyone, i am developing a bluetooth app.
alright Thanks for the guidance mate. I will update u, thanks again. cheers :) On Feb 9, 8:54 pm, Kristopher Micinski krismicin...@gmail.com wrote: On Thu, Feb 9, 2012 at 11:44 AM, Soyer mblack...@gmail.com wrote: so it's an order issue, Could you please instruct me which part should i change?, because honestly i have read loads of articles and i don't think i am going anywhere which getting more n more frustrating... That would be Very Appreciated. It's not an order issue. You're thinking that you call .startDiscovery() and then it starts discovering devices and tells you which there are. It doesn't work like that. Discovery can take a long time, tens of seconds into minutes. If your call to .startDiscovery() blocked until the discovery was finished, your program would ANR and crash Instead, when you call .startDiscovery() what happens is that you're asking the operating system start looking for BT devices, when you finish looking for them, broadcast that you're done and I'll ask what you found, even though this will probably take a long time. So you need to register the BroadcastReceiver to handle the Bluetooth discovery finished action. Have you read the BluetoothChat example. I feel like if you had then you wouldn't be asking this, go read that and it should make sense. And if it doesn't then go read about what a BroadcastReceiver is in the first place. Basically: you're writing your code like it runs in a straight line, it doesn't, it runs asynchronously, so you have to structure your code differently. kris -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
