android - Android で Bluetooth を使用したメッセージとファイルの転送

Question

最初に利用可能なペアリングされた Bluetooth デバイスを検索して接続する必要があるアプリケーションを開発しています。接続までしました。しかしその後、テキスト転送とファイル転送のどちらかを選択するよう求める画面を 1 つ表示しました。テキストを選択すると、edittext とボタンがあるもう 1 つの画面が開きます。ユーザーが edittext に入力してボタンをクリックすると、接続された BT デバイス (BT チャットアプリケーションなど) に転送されます。BT チャットアプリを使用しましたが、理解するのが複雑です。タスクを転送する別の機能が必要です。以下は私の接続コードです。

Main.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();
        }
    };

}

オプション.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>

メッセージ.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>

score 7 · Accepted Answer

次のメソッドを呼び出します。

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);
        }
    }

今あなたのあなたOncreateに以下を入れてくださいActivity with EditText.

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

そして、上記のメソッドを次のように呼び出します

sendDataToPairedDevice(editText1.getText() ,mBluetoothDevice);

Onclickご希望の商品でbutton。

それでおしまい。 just upvote if you use it, thanks, enjoy buddy.

score 1 · Accepted Answer

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();
                            }





                }
            });

score 1 · Accepted Answer

やっと答えが出た…

    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();
                }


            }
        });






    }


}

android - Android で Bluetooth を使用したメッセージとファイルの転送

3 に答える 3

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