BLE图像传输

这是将图像转换为字节数组并发送到ble设备的代码我无法发送完整的数据，并且它几乎停在1kb

有什么方法可以将大数据发送到ble。 是否适合在数据传输中使用延迟，如果可以，则可以共享代码

如果有人有任何代码发送数据高达1mb请分享

公共类RxTxActivity扩展Activity {

byte[] imageInByte,SendByte; private static int IMG_RESULT = 1; String ImageDecode; ImageView imageViewLoad; Button LoadImage; Intent intent; String[] FILE; String[] SAImage,SAsent; private final static String TAG = DeviceControlActivity.class.getSimpleName(); public static final String EXTRAS_DEVICE_NAME = "DEVICE_NAME"; public static final String EXTRAS_DEVICE_ADDRESS = "DEVICE_ADDRESS"; private TextView mCharaDescriptor; private TextView mConnectionState; private TextView mDataField; private TextView mDeviceAddressTextView; private String mServiceUUID, mDeviceAddress; private String mCharaUUID, mDeviceName; private BluetoothLeService mBluetoothLeService; private ArrayList<ArrayList> mGattCharacteristics = new ArrayList<ArrayList>(); private boolean mConnected = true; private BluetoothGattCharacteristic mNotifyCharacteristic; private Button EditButton; private Button CharaSubscribeButton; private EditText EditText; private final String LIST_NAME = "NAME"; private final String LIST_UUID = "UUID"; private String CHARA_DESC = ""; private String properties = ""; private Context context = this; // Code to manage Service lifecycle. private final ServiceConnection mServiceConnection = new ServiceConnection() { @Override public void onServiceConnected(ComponentName componentName, IBinder service) { mBluetoothLeService = ((BluetoothLeService.LocalBinder) service).getService(); if (!mBluetoothLeService.initialize()) { Log.e(TAG, "Unable to initialize Bluetooth"); finish(); } // Automatically connects to the device upon successful start-up initialization. mBluetoothLeService.connect(mDeviceAddress); mBluetoothLeService.readCustomDescriptor(mCharaUUID, mServiceUUID); } @Override public void onServiceDisconnected(ComponentName componentName) { mBluetoothLeService = null; } }; // Handles various events fired by the Service. // ACTION_GATT_CONNECTED: connected to a GATT server. // ACTION_GATT_DISCONNECTED: disconnected from a GATT server. // ACTION_GATT_SERVICES_DISCOVERED: discovered GATT services. // ACTION_DATA_AVAILABLE: received data from the device. This can be a result of read // or notification operations. private final BroadcastReceiver mGattUpdateReceiver = new BroadcastReceiver() { @Override public void onReceive(final Context context, Intent intent) { final String action = intent.getAction(); switch (action) { case BluetoothLeService.ACTION_GATT_CONNECTED: mConnected = true; updateConnectionState(R.string.connected); invalidateOptionsMenu(); break; case BluetoothLeService.ACTION_GATT_DISCONNECTED: mConnected = false; updateConnectionState(R.string.disconnected); invalidateOptionsMenu(); break; case BluetoothLeService.ACTION_GATT_SERVICES_DISCOVERED: break; case BluetoothLeService.ACTION_DATA_AVAILABLE: runOnUiThread(new Runnable() { @Override public void run() { Toast.makeText(context, "Data Received!", Toast.LENGTH_SHORT).show(); } }); displayData(intent.getStringExtra(BluetoothLeService.EXTRA_DATA)); break; case BluetoothLeService.ACTION_DESCRIPTOR_AVAILABLE: Log.i("Receiving data", "Broadcast received"); displayDescriptor(intent.getStringExtra(BluetoothLeService.EXTRA_DATA)); default: break; } } }; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.data_transfer); imageViewLoad = (ImageView) findViewById(R.id.imageView1); LoadImage = (Button)findViewById(R.id.button1); LoadImage.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { intent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI); startActivityForResult(intent, IMG_RESULT); } }); final Intent intent = getIntent(); Log.i("OnCreate", "Created"); mDeviceAddress = intent.getStringExtra(EXTRAS_DEVICE_ADDRESS); mDeviceName = intent.getStringExtra(EXTRAS_DEVICE_NAME); mServiceUUID = intent.getStringExtra("Service UUID"); mCharaUUID = intent.getStringExtra("Characteristic UUID"); CHARA_DESC = intent.getStringExtra("Characteristic Descriptor"); properties = intent.getStringExtra("Characteristic properties"); // Sets up UI references. ((TextView) findViewById(R.id.device_address_rxtx)).setText("Characteristic UUID: " + mCharaUUID); ((TextView) findViewById(R.id.characteristic_Descriptor)).setText("Characteristic Descriptor: " + CHARA_DESC); ((TextView) findViewById(R.id.device_address)).setText(mDeviceAddress); mConnectionState = (TextView) findViewById(R.id.connection_state); mConnectionState.setText("Connected"); mDataField = (TextView) findViewById(R.id.data_value); EditText = (EditText) findViewById(R.id.characteristicEditText); EditButton = (Button) findViewById(R.id.characteristicButton); CharaSubscribeButton = (Button) findViewById(R.id.characteristic_Subscribe); mCharaDescriptor = (TextView) findViewById(R.id.characteristic_Descriptor); EditButton.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { String str = EditText.getText().toString(); mBluetoothLeService.writeCustomCharacteristic(str, mServiceUUID, mCharaUUID); runOnUiThread(new Runnable() { @Override public void run() { Toast.makeText(context, "Message Sent!", Toast.LENGTH_SHORT).show(); } }); mBluetoothLeService.readCustomDescriptor(mCharaUUID, mServiceUUID); } }); CharaSubscribeButton.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { if (properties.indexOf("Indicate") >= 0) { mBluetoothLeService.subscribeCustomCharacteristic(mServiceUUID, mCharaUUID, 1); } else if (properties.indexOf("Notify") >= 0) { mBluetoothLeService.subscribeCustomCharacteristic(mServiceUUID, mCharaUUID, 2); } runOnUiThread(new Runnable() { @Override public void run() { Toast.makeText(context, "Characteristic Subscribed!", Toast.LENGTH_SHORT).show(); } }); mBluetoothLeService.readCustomDescriptor(mCharaUUID, mServiceUUID); } }); checkProperties(); getActionBar().setTitle(mDeviceName); getActionBar().setDisplayHomeAsUpEnabled(true); Intent gattServiceIntent = new Intent(this, BluetoothLeService.class); bindService(gattServiceIntent, mServiceConnection, BIND_AUTO_CREATE); } private void checkProperties() { if (properties.indexOf("Write") >= 0) { } else { EditButton.setEnabled(false); } if (properties.indexOf("Indicate") >= 0) { } else { CharaSubscribeButton.setEnabled(false); } } @Override protected void onResume() { super.onResume(); registerReceiver(mGattUpdateReceiver, makeGattUpdateIntentFilter()); if (mBluetoothLeService != null) { final boolean result = mBluetoothLeService.connect(mDeviceAddress); Log.d(TAG, "Connect request result=" + result); } } @Override protected void onPause() { super.onPause(); unregisterReceiver(mGattUpdateReceiver); } @Override protected void onDestroy() { super.onDestroy(); unbindService(mServiceConnection); mBluetoothLeService = null; } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.gatt_services, menu); if (mConnected) { menu.findItem(R.id.menu_connect).setVisible(false); menu.findItem(R.id.menu_disconnect).setVisible(true); } else { menu.findItem(R.id.menu_connect).setVisible(true); menu.findItem(R.id.menu_disconnect).setVisible(false); } return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.menu_connect: mBluetoothLeService.connect(mDeviceAddress); return true; case R.id.menu_disconnect: mBluetoothLeService.disconnect(); return true; case android.R.id.home: onBackPressed(); return true; } return super.onOptionsItemSelected(item); } private void updateConnectionState(final int resourceId) { runOnUiThread(new Runnable() { @Override public void run() { mConnectionState.setText(resourceId); } }); } private void displayData(String data) { if (data != null) { mDataField.setText(data); } } private void displayDescriptor(final String data) { if( data != null){ runOnUiThread(new Runnable() { @Override public void run() { mCharaDescriptor.setText(mCharaDescriptor.getText().toString() + "\n" + data); } }); } } private static IntentFilter makeGattUpdateIntentFilter() { final IntentFilter intentFilter = new IntentFilter(); intentFilter.addAction(BluetoothLeService.ACTION_GATT_CONNECTED); intentFilter.addAction(BluetoothLeService.ACTION_GATT_DISCONNECTED); intentFilter.addAction(BluetoothLeService.ACTION_GATT_SERVICES_DISCOVERED); intentFilter.addAction(BluetoothLeService.ACTION_DATA_AVAILABLE); intentFilter.addAction(BluetoothLeService.ACTION_DESCRIPTOR_AVAILABLE); return intentFilter; } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); try { if (requestCode == IMG_RESULT && resultCode == RESULT_OK && null != data) { Uri URI = data.getData(); String[] FILE = { MediaStore.Images.Media.DATA }; Cursor cursor = getContentResolver().query(URI, FILE, null, null, null); cursor.moveToFirst(); int columnIndex = cursor.getColumnIndex(FILE[0]); ImageDecode = cursor.getString(columnIndex); cursor.close(); imageViewLoad.setImageBitmap(BitmapFactory .decodeFile(ImageDecode)); } } catch (Exception e) { Toast.makeText(this, "Please try again", Toast.LENGTH_LONG) .show(); } } public void ClickConvert(View view) { TextView txtView; txtView=(TextView)findViewById(R.id.textview_byte); ImageView imageView = (ImageView) findViewById(R.id.imageView1); Bitmap bitmap = ((BitmapDrawable) imageView.getDrawable()).getBitmap(); ByteArrayOutputStream baos = new ByteArrayOutputStream(); bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos); imageInByte = baos.toByteArray(); String response ; response = byteArrayToString(imageInByte); // response = new sun.misc.BASE64Encoder().encode(imageInByte); //String s = javax.xml.bind.DatatypeConverter.printHexBinary(imageInByte); //String str = new String(imageInByte, "UTF-8"); txtView.setText(response); } public static String byteArrayToString(byte[] data){ String response = Arrays.toString(data); String[] byteValues = response.substring(1, response.length() - 1).split(","); byte[] bytes = new byte[byteValues.length]; for (int i=0, len=bytes.length; i<len; i++) { bytes[i] = Byte.parseByte(byteValues[i].trim()); } String str = new String(bytes); return str.toLowerCase(); } public void ClickImage(View view) { final int num= imageInByte.length; int i,j,l,h; j=num/20; Toast.makeText(getApplicationContext(), "loop : " + j, Toast.LENGTH_SHORT).show(); for (i = 0; i <= j; i++) { l=20*i; h=20*(i+1); SystemClock.sleep(40); //ms SendByte = Arrays.copyOfRange(imageInByte, l, h); String str = new String(SendByte); mBluetoothLeService.writeCustomCharacteristic(str, mServiceUUID, mCharaUUID); runOnUiThread(new Runnable() { @Override public void run() { } }); mBluetoothLeService.readCustomDescriptor(mCharaUUID, mServiceUUID); } } 

}

这是writecustomCharacteristics的代码

  public void writeCustomCharacteristic(String str, String serviceUuid, String charaUuid) { if (mBluetoothAdapter == null || mBluetoothGatt == null) { Log.w(TAG, "BluetoothAdapter not initialized"); return; } /*check if the service is available on the device*/ BluetoothGattService mCustomService = mBluetoothGatt.getService(UUID.fromString(serviceUuid)); if(mCustomService == null){ Log.w(TAG, "Custom BLE Service not found"); return; } /*byte[] value = parseHex(str); *//*get the read characteristic from the service*//* BluetoothGattCharacteristic mWriteCharacteristic = mCustomService.getCharacteristic(UUID.fromString(charaUuid)); mWriteCharacteristic.setValue(value); mBluetoothGatt.writeCharacteristic(mWriteCharacteristic);*/ byte[] strBytes = str.getBytes(); BluetoothGattCharacteristic mWriteCharacteristic = mCustomService.getCharacteristic(UUID.fromString(charaUuid)); mWriteCharacteristic.setValue(strBytes); mBluetoothGatt.writeCharacteristic(mWriteCharacteristic); }