activity start -------------------------------------------------------
package Android.Arduino.Bluetooth;import android.app.Activity;import
android.bluetooth.BluetoothAdapter;import
android.bluetooth.BluetoothDevice;import
android.bluetooth.BluetoothSocket;import android.content.Intent;import
android.os.Bundle;import android.os.Handler;import android.view.View;import
android.widget.TextView;import android.widget.EditText; import
android.widget.Button;import java.io.IOException;import
java.io.InputStream;import java.io.OutputStream;import java.util.Set;import
java.util.UUID;
public class MainActivity extends Activity{TextView myLabel;EditText
myTextbox;BluetoothAdapter mBluetoothAdapter;BluetoothSocket
mmSocket;BluetoothDevice mmDevice;OutputStream mmOutputStream;InputStream
mmInputStream;Thread workerThread;byte[] readBuffer;int readBufferPosition;int
counter;volatile boolean stopWorker;
@Overridepublic void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button openButton = (Button)findViewById(R.id.open);
Button sendButton = (Button)findViewById(R.id.send);
Button closeButton = (Button)findViewById(R.id.close);
myLabel = (TextView)findViewById(R.id.label);
myTextbox = (EditText)findViewById(R.id.entry);
//Open Button
openButton.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
try
{
findBT();
openBT();
}
catch (IOException ex) { }
}
});
//Send Button
sendButton.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
try
{
sendData();
}
catch (IOException ex) { }
}
});
//Close button
closeButton.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
try
{
closeBT();
}
catch (IOException ex) { }
}
});}
void findBT(){
mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
if(mBluetoothAdapter == null)
{
myLabel.setText("No bluetooth adapter available");
}
if(!mBluetoothAdapter.isEnabled())
{
Intent enableBluetooth = new
Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBluetooth, 0);
}
Set<BluetoothDevice> pairedDevices = mBluetoothAdapter.getBondedDevices();
if(pairedDevices.size() > 0)
{
for(BluetoothDevice device : pairedDevices)
{
if(device.getName().equals("MattsBlueTooth"))
{
mmDevice = device;
break;
}
}
}
myLabel.setText("Bluetooth Device Found");}
void openBT() throws IOException{
UUID uuid = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");
//Standard SerialPortService ID
mmSocket = mmDevice.createRfcommSocketToServiceRecord(uuid);
mmSocket.connect();
mmOutputStream = mmSocket.getOutputStream();
mmInputStream = mmSocket.getInputStream();
beginListenForData();
myLabel.setText("Bluetooth Opened");}
void beginListenForData(){
final Handler handler = new Handler();
final byte delimiter = 10; //This is the ASCII code for a newline character
stopWorker = false;
readBufferPosition = 0;
readBuffer = new byte[1024];
workerThread = new Thread(new Runnable()
{
public void run()
{
while(!Thread.currentThread().isInterrupted() && !stopWorker)
{
try
{
int bytesAvailable = mmInputStream.available();
if(bytesAvailable > 0)
{
byte[] packetBytes = new byte[bytesAvailable];
mmInputStream.read(packetBytes);
for(int i=0;i<bytesAvailable;i++)
{
byte b = packetBytes[i];
if(b == delimiter)
{
byte[] encodedBytes = new byte[readBufferPosition];
System.arraycopy(readBuffer, 0, encodedBytes, 0, encodedBytes.length);
final String data = new String(encodedBytes, "US-ASCII");
readBufferPosition = 0;
handler.post(new Runnable()
{
public void run()
{
myLabel.setText(data);
}
});
}
else
{
readBuffer[readBufferPosition++] = b;
}
}
}
}
catch (IOException ex)
{
stopWorker = true;
}
}
}
});
workerThread.start();}
void sendData() throws IOException{
String msg = myTextbox.getText().toString();
msg += "\n";
mmOutputStream.write(msg.getBytes());
myLabel.setText("Data Sent");}
void closeBT() throws IOException{
stopWorker = true;
mmOutputStream.close();
mmInputStream.close();
mmSocket.close();
myLabel.setText("Bluetooth Closed");}}
activity end ----------------------------------------------------
layout start -----------------------------------------------------
<?xml version="1.0" encoding="utf-8"?><RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="fill_parent"android:layout_height="fill_parent"tools:ignore="TextFields,HardcodedText";
>
<TextView
android:id="@+id/label"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Type here:" />
<EditText
android:id="@+id/entry"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@id/label"
android:background="@android:drawable/editbox_background" />
<Button
android:id="@+id/open"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_below="@id/entry"
android:layout_marginLeft="10dip"
android:text="Open" />
<Button
android:id="@+id/send"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="@id/open"
android:layout_toLeftOf="@id/open"
android:text="Send" />
<Button
android:id="@+id/close"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="@id/send"
android:layout_toLeftOf="@id/send"
android:text="Close" />
layout end ------------------------------------------------------
manifest start -------------------------------------------------
</application><uses-permission android:name="android.permission.BLUETOOTH" />
manifest end --------------------------------------------------
On Friday, June 26, 2015 at 7:23:15 PM UTC+5:30, mike digioia wrote:
>
> submit me
>
> On Wed, Jun 24, 2015 at 6:14 AM, Jags <[email protected] <javascript:>>
> wrote:
>
>> Thanks a lot treking,
>>
>> I am using the code as is in the link below
>>
>>
>> http://stackoverflow.com/questions/13450406/how-to-receive-serial-data-using-android-bluetooth
>>
>> now, data is getting transferred properly. But i need a entrypoint in my
>> application when bluetooth is paired or sends some data, my application
>> needs to wake up from closing state, so that i can do other transfers
>> according to session.
>>
>> hope i am clear now
>>
>> regards
>> jags
>>
>> On Monday, June 22, 2015 at 7:57:30 AM UTC+5:30, TreKing wrote:
>>>
>>> You should explain how you're going about to getting bluetooth data now
>>> (like with code snippets). You minimal description is too vague for anyone
>>> to really address.
>>>
>>> On Thu, Jun 18, 2015 at 4:19 AM, Jags <[email protected]> wrote:
>>>
>>>> my current application is about reading data from a bluetooth device.
>>>> when my application is in background, my application wakes up and receives
>>>> data properly. But when the application is stopped by me from list of
>>>> background apps, or the app has not run at all, the application does not
>>>> wake up.
>>>>
>>>> Request experts to guide me to a solution approach. I want my
>>>> application to wake up from stopped state when bluetooth pair happens or
>>>> data is pushed from bluetooth.
>>>>
>>>> thanks and regards
>>>> jags
>>>>
>>>> --
>>>> You received this message because you are subscribed to the Google
>>>> Groups "Android Developers" group.
>>>>
>>>>
>>>
>>>
>>> --
>>>
>>>
>>> -------------------------------------------------------------------------------------------------
>>> 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 [email protected]
>> <javascript:>
>> To unsubscribe from this group, send email to
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>> For more options, visit this group at
>> http://groups.google.com/group/android-developers?hl=en
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>
>
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