Question

嗨，有人可以帮我这个吗？

Answer 1

我认为使用 BLE（蓝牙法能量）你无法从Android设备发送数据，但你只能接收 BLE DATA ，如 UUID，MajorId ，MinorID 您必须从 iphone 或任何其他正在发送数据的设备继续发送数据。如果你想收到数据，那么尝试从here下载含酸的代码并享受： - ）

Answer 2

这就是我的工作方式 -

输入流，输出流，发送和接收命令的

ConnectedThread类

private class ConnectedThread extends Thread {
        public ConnectedThread(BluetoothSocket socket) {
            InputStream tmpIn = null;
            OutputStream tmpOut = null;

            // Get the input and output streams, using temp objects because
            // member streams are final
            try {
                tmpIn = socket.getInputStream();
                tmpOut = socket.getOutputStream();
            } catch (IOException e) { }

            mmInStream = new DataInputStream(tmpIn);
            mmOutStream = new DataOutputStream(tmpOut);


         }

        public void run() {
            byte[] buffer = new byte[1024];  // buffer store for the stream
            int bytes; // bytes returned from read()

            // Keep listening to the InputStream until an exception occurs
            while (true) 
            {
                try 
                {  
                    // Read from the InputStream
                    if(mmInStream.available() > 0)
                    {
                           bytes = mmInStream.read(buffer);

                           if(mHandler == null)
                                mHandler = new BBHandler(MyFragment.this);
                            else
                                mHandler.setTarget(MyFragment.this);

                           mHandler.obtainMessage(MESSAGE_WRITE, -1, -1, buffer).sendToTarget();
                    }
                } 
                catch (IOException e) 
                {
                    Log.e(TAG, "BLE: Error reading from mmInStream");
                    setSetting("STATUS", "Disconnected");
                    break;
                }
                catch (NullPointerException e) 
                {
                    Log.e(TAG, "BLE: Null Pointer Exception mmInStream read or mHandler");
                }
            }
        }

        public void writeByte(char[] buffer)
        {
            for(int k=0; k < buffer.length; k++)
            {
                try 
                {
                    mmOutStream.writeByte(buffer[k]);
                } 
                catch (IOException e) 
                {
                    Log.e(TAG, "BLE: IOException during writeByte", e);
                }
                catch (NullPointerException e) 
                {
                    Log.e(TAG, "BLE: NullPointerException during writeByte", e);
                }
            }
        }

        public void cancel() {
            try {
                socket.close();
            } catch (IOException e) {
                Log.e(TAG, "BlackBox: close() of connect socket failed", e);
            }
        }
    }

这是BBHandler类 -

static class BBHandler extends Handler{
        WeakReference<MyFragment> mFrag;

        BBHandler(MyFragment aFragment) {
            mFrag = new WeakReference<MyFragment>(aFragment);
        }

        public void setTarget(MyFragment aFragment) {
            mFrag.clear();
            mFrag = new WeakReference<MyFragment>(aFragment);
        }

        @Override
        public void handleMessage(Message message) {
            MyFragment theFrag = mFrag.get();
            if (theFrag != null) {
                theFrag.blackBoxData(message);
            }
        }
    }

注意： MyFragment是您自己的片段，blackBoxData是调用执行步骤的方法。你的所有逻辑都应该在这里。

如何从Android发送和接收数据以与BLE通信（cc2541）

2 个答案: