Android में प्रोग्राम किए गए ब्लूटूथ डिवाइस प्रोग्रामेटिक से कैसे कनेक्ट करें?

Question

मैं एक ऐसा एप्लीकेशन विकसित कर रहा हूं जहां मुझे ब्लूटूथ युग्मित डिवाइस से कनेक्ट करना है। इन दो उपकरणों को एक दूसरे के साथ जोड़ा जाता है। अब जब मैं युग्मित डिवाइस से कनेक्ट करने का प्रयास करता हूं तो यह कनेक्टिंग मोड संवाद से फंस जाता है। लॉग दिखाता है कि यह सफलतापूर्वक कनेक्ट है लेकिन संवाद को खारिज नहीं करता है।

यहां मेरा कोड स्निपेट है।

Main.java

import java.io.BufferedReader; 
import java.io.File; 
import java.io.FileOutputStream; 
import java.io.IOException; 
import java.io.InputStream; 
import java.io.InputStreamReader; 
import java.text.SimpleDateFormat; 
import java.util.Calendar; 
import java.util.Date; 
import java.util.Random; 
import java.util.Set; 
import java.util.TimeZone; 
import java.util.UUID; 
import android.app.Activity; 
import android.app.AlertDialog; 
import android.app.AlertDialog.Builder; 
import android.app.Dialog; 
import android.app.ProgressDialog; 
import android.bluetooth.BluetoothAdapter; 
import android.bluetooth.BluetoothDevice; 
import android.bluetooth.BluetoothSocket; 
import android.content.Context; 
import android.content.DialogInterface; 
import android.content.DialogInterface.OnCancelListener; 
import android.content.Intent; 
import android.content.SharedPreferences; 
import android.content.res.Configuration; 
import android.graphics.Bitmap; 
import android.graphics.Canvas; 
import android.graphics.Color; 
import android.graphics.ColorMatrix; 
import android.graphics.ColorMatrixColorFilter; 
import android.graphics.PorterDuff.Mode; 
import android.graphics.drawable.BitmapDrawable; 
import android.graphics.drawable.Drawable; 
import android.os.Bundle; 
import android.os.Environment; 
import android.preference.PreferenceManager; 
import android.provider.Settings; 
import android.util.Log; 
import android.view.KeyEvent; 
import android.view.MotionEvent; 
import android.view.View; 
import android.view.Window; 
import android.view.WindowManager; 
import android.view.View.OnTouchListener; 
import android.view.inputmethod.InputMethodManager; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.ImageView; 
import android.widget.TextView; 
import android.widget.Toast; 

public class Main extends Activity 
{ 
    protected static final String TAG = "TAG"; 
    private static final int REQUEST_CONNECT_DEVICE = 1; 
    private static final int REQUEST_ENABLE_BT = 2; 

    Button mScan; 
    BluetoothAdapter mBluetoothAdapter; 
    private UUID applicationUUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"); 

    @Override 
    public void onCreate(Bundle mSavedInstanceState) 
    { 
     super.onCreate(mSavedInstanceState); 
     requestWindowFeature(Window.FEATURE_NO_TITLE); 
     getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, 
      WindowManager.LayoutParams.FLAG_FULLSCREEN); 
     setContentView(R.layout.main); 
     mScan = (Button) findViewById(R.id.Scan); 
     mScan.setOnClickListener(new View.OnClickListener() 
     { 
      public void onClick(View mView) 
      { 
       mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter(); 
       if (mBluetoothAdapter == null) 
       { 
        Toast.makeText(Main.this, "DeviceHasNoSupport", 2000).show(); 
       } 
       else 
       { 
        if (!mBluetoothAdapter.isEnabled()) 
        { 
         Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE); 
         startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT); 
        } 
        else 
        { 
         ListPairedDevices(); 
         Intent connectIntent = new Intent(Main.this, DeviceListActivity.class); 
         startActivityForResult(connectIntent, REQUEST_CONNECT_DEVICE); 
        } 
       } 
      } 
     }); 
    }// onCreate 

    public void onActivityResult(int mRequestCode, int mResultCode, Intent mDataIntent) 
    { 
     super.onActivityResult(mRequestCode, mResultCode, mDataIntent); 

     switch (mRequestCode) 
     { 
      case REQUEST_CONNECT_DEVICE: 
       if (mResultCode == Activity.RESULT_OK) 
       { 
        Bundle mExtra = mDataIntent.getExtras(); 
        String mDeviceAddress = mExtra.getString("DeviceAddress"); 
        Log.v(TAG, "Coming incoming address " + mDeviceAddress); 
        BluetoothDevice mBluetoothDevice = mBluetoothAdapter.getRemoteDevice(mDeviceAddress); 
        pairToDevice(mBluetoothDevice); 
        Log.v(TAG, "pairToDeviceCalled"); 
       } 
       break; 

      case REQUEST_ENABLE_BT: 
       if (mResultCode == Activity.RESULT_OK) 
       { 
        ListPairedDevices(); 
        Intent connectIntent = new Intent(Main.this, DeviceListActivity.class); 
        startActivityForResult(connectIntent, REQUEST_CONNECT_DEVICE); 
       } 
       else 
       { 
        Toast.makeText(Main.this, "BTNotEnabled", 2000).show(); 
       } 
       break; 
     } 
    } 

    private void ListPairedDevices() 
    { 
     Set<BluetoothDevice> mPairedDevices = mBluetoothAdapter.getBondedDevices(); 
     if (mPairedDevices.size() > 0) 
     { 
      for (BluetoothDevice mDevice : mPairedDevices) 
      { 
       Log.v(TAG, "PairedDevices: " + mDevice.getName() + " " + mDevice.getAddress()); 
      } 
     } 
    } 

    private void pairToDevice(BluetoothDevice nBluetoothDevice) 
    { 
     Log.v(TAG, "InsidepairToDeviceCalled"); 
     openSocket(nBluetoothDevice); 
     Log.v(TAG, "LeavingpairToDeviceCalled"); 
    } 

    private void openSocket(BluetoothDevice nBluetoothDevice) 
    { 
     try 
     { 
      Log.v(TAG, "InsideOpenSockedCalled"); 
      final ProgressDialog dialog = new ProgressDialog(this); 
      final ConnectRunnable connector = new ConnectRunnable(nBluetoothDevice, dialog); 
      Log.v(TAG, "InsideOpenSockedConnecterCalled"); 
      ProgressDialog.show(this, "Connecting...", nBluetoothDevice.getName() + " : " + nBluetoothDevice.getAddress(), 
       true, true, 
       new OnCancelListener() 
      { 
         public void onCancel(DialogInterface dialog) 
         { 
          connector.cancel(); 
         } 
        }); 
      new Thread(connector).start(); 
     } 
     catch (IOException ex) 
     { 
      Log.d(TAG, "Could not open bluetooth socket", ex); 
     } 
    } 

    private class ConnectRunnable implements Runnable 
    { 
     private final ProgressDialog dialog; 
     private final BluetoothSocket socket; 

     public ConnectRunnable(BluetoothDevice device, ProgressDialog dialog) throws IOException 
     { 
      socket = device.createRfcommSocketToServiceRecord(applicationUUID); 
      this.dialog = dialog; 
     } 

     public void run() 
     { 
      try 
      { 
       Log.v(TAG, "InsideRunnableCalled"); 
       mBluetoothAdapter.cancelDiscovery(); 
       socket.connect(); 
       Log.v(TAG, "InsideRunnableSocketConnectCalled"); 
      } 
      catch (IOException connectException) 
      { 
       Log.d(TAG, "Could not connect to socket", connectException); 
       closeSocket(socket); 
       return; 
      } 
      Log.v(TAG, "Connected"); 
      dismissDialog(dialog); 
      closeSocket(socket); 
     } 

     public void cancel() 
     { 
      try 
      { 
       socket.close(); 
      } 
      catch (IOException e) 
      { 
       Log.d(TAG, "Canceled connection", e); 
      } 
     } 
    } 

    private void dismissDialog(final Dialog dialog) 
    { 
     runOnUiThread(new Runnable() 
     { 
      public void run() 
      { 
       dialog.dismiss(); 
       Log.v(TAG, "DialogClosed"); 
      } 
     }); 
    } 

    private void closeSocket(BluetoothSocket nOpenSocket) 
    { 
     try 
     { 
      nOpenSocket.close(); 
      Log.v(TAG, "SockectClosed"); 
     } 
     catch (IOException ex) 
     { 
      Log.d(TAG, "Could not close exisiting socket", ex); 
     } 
    } 
    @Override 
    public boolean onKeyDown(int mKeyCode, KeyEvent mKeyEvent) 
    { 
     if ((!(android.os.Build.VERSION.SDK_INT > android.os.Build.VERSION_CODES.DONUT) 
      && mKeyCode == KeyEvent.KEYCODE_BACK && mKeyEvent.getRepeatCount() == 0)) 
     { 
      onBackPressed(); 
     } 
     return super.onKeyDown(mKeyCode, mKeyEvent); 
    } 

    public void onBackPressed() 
    { 
     finish(); 
    } 
} 

DeviceListActivity.java

import java.util.Set; 
import android.app.Activity; 
import android.bluetooth.BluetoothAdapter; 
import android.bluetooth.BluetoothDevice; 
import android.content.Intent; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.View; 
import android.view.Window; 
import android.widget.AdapterView; 
import android.widget.ArrayAdapter; 
import android.widget.ListView; 
import android.widget.TextView; 
import android.widget.AdapterView.OnItemClickListener; 

public class DeviceListActivity extends Activity 
{ 
    protected static final String TAG = "TAG"; 
    private BluetoothAdapter mBluetoothAdapter; 
    private ArrayAdapter<String> mPairedDevicesArrayAdapter; 

    @Override 
    protected void onCreate(Bundle mSavedInstanceState) 
    { 
     super.onCreate(mSavedInstanceState); 
     requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS); 
     setContentView(R.layout.device_list); 

     setResult(Activity.RESULT_CANCELED); 
     mPairedDevicesArrayAdapter = new ArrayAdapter<String>(this, R.layout.device_name); 

     ListView mPairedListView = (ListView) findViewById(R.id.paired_devices); 
     mPairedListView.setAdapter(mPairedDevicesArrayAdapter); 
     mPairedListView.setOnItemClickListener(mDeviceClickListener); 

     mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter(); 
     Set<BluetoothDevice> mPairedDevices = mBluetoothAdapter.getBondedDevices(); 

     if (mPairedDevices.size() > 0) 
     { 
      findViewById(R.id.title_paired_devices).setVisibility(View.VISIBLE); 
      for (BluetoothDevice mDevice : mPairedDevices) 
      { 
       mPairedDevicesArrayAdapter.add(mDevice.getName() + "\n" + mDevice.getAddress()); 
      } 
     } 
     else 
     { 
      String mNoDevices = getResources().getText(R.string.none_paired).toString(); 
      mPairedDevicesArrayAdapter.add(mNoDevices); 
     } 
    } 

    @Override 
    protected void onDestroy() 
    { 
     super.onDestroy(); 
     if (mBluetoothAdapter != null) 
     { 
      mBluetoothAdapter.cancelDiscovery(); 
     } 
    } 

    private OnItemClickListener mDeviceClickListener = new OnItemClickListener() 
    { 
     public void onItemClick(AdapterView<?> mAdapterView, View mView, int mPosition, long mLong) 
     { 
      mBluetoothAdapter.cancelDiscovery(); 
      String mDeviceInfo = ((TextView) mView).getText().toString(); 
      String mDeviceAddress = mDeviceInfo.substring(mDeviceInfo.length() - 17); 
      Log.v(TAG, "Device_Address " + mDeviceAddress); 

      Bundle mBundle = new Bundle(); 
      mBundle.putString("DeviceAddress", mDeviceAddress); 
      Intent mBackIntent = new Intent(); 
      mBackIntent.putExtras(mBundle); 
      setResult(Activity.RESULT_OK, mBackIntent); 
      finish(); 
     } 
    }; 

} 

एंड्रॉयड प्रकट

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
    package="com.androidvouge.bluetooth" android:versionCode="1" 
    android:versionName="1.0"> 
     <application android:icon="@drawable/icon" android:label="@string/name" 
     android:theme="@android:style/Theme.NoTitleBar.Fullscreen"> 
      <activity android:name=".Main" android:screenOrientation="portrait"> 
      <intent-filter> 
       <action android:name="android.intent.action.MAIN" /> 
       <category android:name="android.intent.category.LAUNCHER" /> 
      </intent-filter> 
     </activity> 
     <activity android:name=".DeviceListActivity"  android:theme="@android:style/Theme.Dialog" 
     android:configChanges="orientation|keyboardHidden" 
     android:screenOrientation="portrait" /> 
    </application> 
    <uses-sdk android:minSdkVersion="7" android:targetSdkVersion="11" /> 
    <uses-permission android:name="android.permission.BLUETOOTH" /> 
    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" /> 
    <supports-screens android:smallScreens="false" 
     android:normalScreens="true" android:largeScreens="true" /> 
</manifest> 

device_list.xml

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:orientation="vertical" android:layout_width="fill_parent" 
    android:layout_height="fill_parent"> 
    <TextView android:id="@+id/title_paired_devices" 
     android:layout_width="fill_parent" android:layout_height="wrap_content" 
     android:text="@string/title_paired_devices" android:visibility="gone" 
     android:background="#666" android:textColor="#fff" 
     android:paddingLeft="5dip" /> 
    <ListView android:id="@+id/paired_devices" 
     android:layout_width="fill_parent" android:layout_height="wrap_content" 
     android:stackFromBottom="true" android:layout_weight="1" /> 
</LinearLayout> 

device_name.xml

<?xml version="1.0" encoding="utf-8"?> 
<TextView xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="fill_parent" android:layout_height="wrap_content" 
    android:textSize="18sp" android:padding="5dip" /> 

main.xml केवल बटन है।

यहां लॉगक आउटपुट है।

06-16 13:46:08.640 19062 19062 E CachedBluetoothDevice: updating profiles for $ $ S A \/ A N $ $ 
06-16 13:46:08.640 19062 19062 V CachedBluetoothDevice: opp classbits != uuid 
06-16 13:46:08.640 19062 19062 V CachedBluetoothDevice: Class: 5a0204 
06-16 13:46:08.640 19062 19062 V CachedBluetoothDevice: UUID: 
06-16 13:46:08.640 19062 19062 V CachedBluetoothDevice: 00001101-0000-1000-8000-00805f9b34fb 
06-16 13:46:08.667 19091 19091 V TAG  : PairedDevices: $ $ S A \/ A N $ $ 00:1D:3B:05:B4:D5 
06-16 13:46:10.582 19091 19091 V TAG  : Device_Address 00:1D:3B:05:B4:D5 
06-16 13:46:10.597 19091 19091 V TAG  : Coming incoming address 00:1D:3B:05:B4:D5 
06-16 13:46:10.597 19091 19091 V TAG  : InsidepairToDeviceCalled 
06-16 13:46:10.597 19091 19091 V TAG  : InsideOpenSockedCalled 
06-16 13:46:10.718 19091 19091 V TAG  : InsideOpenSockedConnecterCalled 
06-16 13:46:10.789 19091 19091 V TAG  : LeavingpairToDeviceCalled 
06-16 13:46:10.789 19091 19091 V TAG  : pairToDeviceCalled 
06-16 13:46:10.800 19091 19128 V TAG  : InsideRunnableCalled 
06-16 13:46:13.730 19091 19128 V TAG  : InsideRunnableSocketConnectCalled 
06-16 13:46:13.730 19091 19128 V TAG  : Connected 
06-16 13:46:13.730 19091 19128 V TAG  : SockectClosed 
06-16 13:46:13.734 19091 19091 V TAG  : DialogClosed 

गलत कहां जा रहा है? कोई भी जिसने प्रसंस्करण संवाद के साथ ब्लूटूथ को सफलतापूर्वक कॉन्फ़िगर किया है, कृपया मुझे एक हाथ दें।

धन्यवाद।

Answer 1

कृपया नीचे अपनी मुख्य.जावा फ़ाइल को संशोधित करें और कृपया बाकी फ़ाइलों को उस पर रखें।

Main.java

import java.io.File; 
import java.io.FileOutputStream; 
import java.io.IOException; 
import java.text.SimpleDateFormat; 
import java.util.Calendar; 
import java.util.Date; 
import java.util.Random; 
import java.util.Set; 
import java.util.TimeZone; 
import java.util.UUID; 

import android.app.Activity; 
import android.app.AlertDialog; 
import android.app.Dialog; 
import android.app.ProgressDialog; 
import android.bluetooth.BluetoothAdapter; 
import android.bluetooth.BluetoothDevice; 
import android.bluetooth.BluetoothSocket; 
import android.content.Context; 
import android.content.DialogInterface; 
import android.content.Intent; 
import android.content.SharedPreferences; 
import android.content.res.Configuration; 
import android.graphics.Bitmap; 
import android.graphics.Canvas; 
import android.graphics.Color; 
import android.graphics.ColorMatrix; 
import android.graphics.ColorMatrixColorFilter; 
import android.graphics.PorterDuff.Mode; 
import android.graphics.drawable.BitmapDrawable; 
import android.graphics.drawable.Drawable; 
import android.os.Bundle; 
import android.os.Environment; 
import android.os.Handler; 
import android.os.Message; 
import android.preference.PreferenceManager; 
import android.provider.Settings; 
import android.util.Log; 
import android.view.KeyEvent; 
import android.view.MotionEvent; 
import android.view.View; 
import android.view.View.OnTouchListener; 
import android.view.Window; 
import android.view.WindowManager; 
import android.view.inputmethod.InputMethodManager; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.ImageView; 
import android.widget.TextView; 
import android.widget.Toast; 

public class Main extends Activity implements Runnable 
{ 
    protected static final String TAG = "TAG"; 
    private static final int REQUEST_CONNECT_DEVICE = 1; 
    private static final int REQUEST_ENABLE_BT = 2; 
    Button mScan; 
    BluetoothAdapter mBluetoothAdapter; 
    private UUID applicationUUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"); 
    private ProgressDialog mBluetoothConnectProgressDialog; 
    private BluetoothSocket mBluetoothSocket; 
    BluetoothDevice mBluetoothDevice; 

    @Override 
    public void onCreate(Bundle mSavedInstanceState) 
    { 
     super.onCreate(mSavedInstanceState); 
     requestWindowFeature(Window.FEATURE_NO_TITLE); 
     getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, 
      WindowManager.LayoutParams.FLAG_FULLSCREEN); 
     setContentView(R.layout.main); 
     mScan = (Button) findViewById(R.id.Scan); 
     mScan.setOnClickListener(new View.OnClickListener() 
     { 
      public void onClick(View mView) 
      { 
       mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter(); 
       if (mBluetoothAdapter == null) 
       { 
        Toast.makeText(Main.this, "Message1", 2000).show(); 
       } 
       else 
       { 
        if (!mBluetoothAdapter.isEnabled()) 
        { 
         Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE); 
         startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT); 
        } 
        else 
        { 
         ListPairedDevices(); 
         Intent connectIntent = new Intent(Main.this, DeviceListActivity.class); 
         startActivityForResult(connectIntent, REQUEST_CONNECT_DEVICE); 
        } 
       } 
      } 
     }); 

     mTune.setOnClickListener(new View.OnClickListener() 
     { 
      public void onClick(View mView) 
      { 
       mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter(); 
       if (mBluetoothAdapter == null) 
       { 
        Toast.makeText(Main.this, "Message2", 2000).show(); 
       } 
       else 
       { 
        if (!mBluetoothAdapter.isEnabled()) 
        { 
         Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE); 
         startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT); 
        } 
        else 
        { 
         ListPairedDevices(); 
         Intent connectIntent = new Intent(Main.this, DeviceListActivity.class); 
         startActivityForResult(connectIntent, REQUEST_CONNECT_DEVICE); 
        } 
       } 
      } 
     }); 
    }// onCreate 

    public void onActivityResult(int mRequestCode, int mResultCode, Intent mDataIntent) 
    { 
     super.onActivityResult(mRequestCode, mResultCode, mDataIntent); 

     switch (mRequestCode) 
     { 
      case REQUEST_CONNECT_DEVICE: 
       if (mResultCode == Activity.RESULT_OK) 
       { 
        Bundle mExtra = mDataIntent.getExtras(); 
        String mDeviceAddress = mExtra.getString("DeviceAddress"); 
        Log.v(TAG, "Coming incoming address " + mDeviceAddress); 
        mBluetoothDevice = mBluetoothAdapter.getRemoteDevice(mDeviceAddress); 
        mBluetoothConnectProgressDialog = ProgressDialog.show(this, "Connecting...", mBluetoothDevice.getName() + " : " + mBluetoothDevice.getAddress(), true, false); 
        Thread mBlutoothConnectThread = new Thread(this); 
        mBlutoothConnectThread.start(); 
        //pairToDevice(mBluetoothDevice); This method is replaced by progress dialog with thread 
       } 
       break; 

      case REQUEST_ENABLE_BT: 
       if (mResultCode == Activity.RESULT_OK) 
       { 
        ListPairedDevices(); 
        Intent connectIntent = new Intent(Main.this, DeviceListActivity.class); 
        startActivityForResult(connectIntent, REQUEST_CONNECT_DEVICE); 
       } 
       else 
       { 
        Toast.makeText(Main.this, "Message", 2000).show(); 
       } 
       break; 
     } 
    } 

    private void ListPairedDevices() 
    { 
     Set<BluetoothDevice> mPairedDevices = mBluetoothAdapter.getBondedDevices(); 
     if (mPairedDevices.size() > 0) 
     { 
      for (BluetoothDevice mDevice : mPairedDevices) 
      { 
       Log.v(TAG, "PairedDevices: " + mDevice.getName() + " " + mDevice.getAddress()); 
      } 
     } 
    } 

    public void run() 
    { 
     try 
     { 
      mBluetoothSocket = mBluetoothDevice.createRfcommSocketToServiceRecord(applicationUUID); 
      mBluetoothAdapter.cancelDiscovery(); 
      mBluetoothSocket.connect(); 
      mHandler.sendEmptyMessage(0); 
     } 
     catch (IOException eConnectException) 
     { 
      Log.d(TAG, "CouldNotConnectToSocket", eConnectException); 
      closeSocket(mBluetoothSocket); 
      return; 
     } 
    } 

    private void closeSocket(BluetoothSocket nOpenSocket) 
    { 
     try 
     { 
      nOpenSocket.close(); 
      Log.d(TAG, "SocketClosed"); 
     } 
     catch (IOException ex) 
     { 
      Log.d(TAG, "CouldNotCloseSocket"); 
     } 
    } 

    private Handler mHandler = new Handler() 
    { 
     @Override 
     public void handleMessage(Message msg) 
     { 
      mBluetoothConnectProgressDialog.dismiss(); 
      Toast.makeText(Main.this, "DeviceConnected", 5000).show(); 
     } 
    }; 
} 

धन्यवाद।