4

我正在开发一个应用程序，首先我们必须搜索并连接可用的配对蓝牙设备。我已经完成了直到连接。但在那之后，我放了一个屏幕，要求在文本和文件传输之间进行选择。当我选择文本时，会再打开一个屏幕，其中有编辑文本和按钮。无论用户在 edittext 中键入什么并单击应传输到连接的 BT 设备（如 BT 聊天应用程序）的按钮。我已经使用了 BT 聊天应用程序，但理解起来很复杂。我想要一个单独的功能来完成传输任务。下面是我的连接代码。

主.java

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);
                    }
                }
            }
        });

    }

    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, "Device Connected", 5000).show();

            Intent in = new Intent(getBaseContext(), Option.class);
            startActivity(in);

        }
    };
}

DeviceListActivity.java

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();
        }
    };

}

选项.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/file" />

    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/txt" />

</LinearLayout>

消息.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <EditText
        android:id="@+id/editText1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:ems="10" 
        android:hint="@string/hint">

        <requestFocus />
    </EditText>

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/send" />

</LinearLayout>
4

3 回答 3

7

调用以下方法：

private void sendDataToPairedDevice(String message ,BluetoothDevice device){       
       byte[] toSend = message.getBytes();
        try {
            BluetoothSocket socket = device.createInsecureRfcommSocketToServiceRecord(applicationUUID);
            OutputStream mmOutStream = socket.getOutputStream();
            mmOutStream.write(toSend);
            // Your Data is sent to  BT connected paired device ENJOY.
        } catch (IOException e) {
            Log.e(TAG, "Exception during write", e);
        }
    }

现在将以下内容放入您Oncreate的Activity with EditText.

EditText editText1 = (EditText) findViewById(R.id.editText1);

并调用上述方法

sendDataToPairedDevice(editText1.getText() ,mBluetoothDevice);

在Onclick你想要的button。

就是这样。 just upvote if you use it, thanks, enjoy buddy.

于 2013-02-07T12:00:35.000 回答
1 
public void onClick(View v) {
                    // TODO Auto-generated method stub




                            mBluetoothAdapter1 = BluetoothAdapter.getDefaultAdapter();

                            byte[] toSend=message1.getBytes();

                            try
                            {

                                final UUID applicationUUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");
                                BluetoothDevice device=mBluetoothAdapter1.getRemoteDevice(MacAddress);
                                BluetoothSocket socket=device.createInsecureRfcommSocketToServiceRecord(applicationUUID);
                                OutputStream mmout=socket.getOutputStream();
                                mmout.write(toSend);
                                mmout.flush();
                                mmout.close();
                                socket.close();

                            }
                            catch (IOException e) 
                            {
                                // TODO Auto-generated catch block
                                e.printStackTrace();
                            }





                }
            });
于 2013-02-28T11:58:19.533 回答
1

终于得到答案了...

    BluetoothAdapter mBluetoothAdapter = null;
    BluetoothDevice m1BluetoothDevice;
    public static BluetoothSocket socket;//Get this value from Main Activity
    Button btn;
    EditText et;

    public static String MacAddressesss; 

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.message);

        btn=(Button)findViewById(R.id.btn);
        et=(EditText)findViewById(R.id.et);

        btn.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub

                try
                {
                    String msg=et.getText().toString();
                    byte tosend= msg.getBytes();
                    OutputStream out= socket.getOutputStream();
                    out.write(tosend);


                }

                catch(IOException e)
                {
                    e.printStackTrace();
                }


            }
        });






    }


}
于 2013-03-01T13:29:06.463 回答