单片机与接口技术课外制作-Android蓝牙遥控小车编程参考(2)

try { outStream.write(msgBuffer); } catch (IOException e) { } break; } return false; } });

//左转

mButtonL=(Button)findViewById(R.id.btnL);

mButtonL.setOnTouchListener(new Button.OnTouchListener(){ public boolean onTouch(View v, MotionEvent event) { // TODO Auto-generated method stub String message; byte[] msgBuffer; int action = event.getAction(); switch(action) { case MotionEvent.ACTION_DOWN: try { outStream = btSocket.getOutputStream(); } catch (IOException e) { } message = "2"; msgBuffer = message.getBytes(); try { outStream.write(msgBuffer); } catch (IOException e) { } break; case MotionEvent.ACTION_UP: try { outStream = btSocket.getOutputStream(); } catch (IOException e) { } message = "0"; msgBuffer = message.getBytes(); try { outStream.write(msgBuffer); } catch (IOException e) { } break; } return false; } });

//右转

mButtonR=(Button)findViewById(R.id.btnR);

mButtonR.setOnTouchListener(new Button.OnTouchListener(){ public boolean onTouch(View v, MotionEvent event) { // TODO Auto-generated method stub String message; byte[] msgBuffer; int action = event.getAction(); switch(action) { case MotionEvent.ACTION_DOWN: try {

outStream = btSocket.getOutputStream(); } catch (IOException e) { } message = "4"; msgBuffer = message.getBytes(); try { outStream.write(msgBuffer); } catch (IOException e) { } break; case MotionEvent.ACTION_UP: try { outStream = btSocket.getOutputStream(); } catch (IOException e) { } message = "0"; msgBuffer = message.getBytes(); try { outStream.write(msgBuffer); } catch (IOException e) { } break; } return false; } });

//停止

mButtonS=(Button)findViewById(R.id.btnS);

mButtonS.setOnTouchListener(new Button.OnTouchListener(){ public boolean onTouch(View v, MotionEvent event) { // TODO Auto-generated method stub if(event.getAction()==MotionEvent.ACTION_DOWN) try {

outStream = btSocket.getOutputStream(); } catch (IOException e) { } String message = "0";

byte[] msgBuffer = message.getBytes(); try {

outStream.write(msgBuffer);

} catch (IOException e) { } return false; } });

mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter(); if (mBluetoothAdapter == null) { Toast.makeText(this, "蓝牙设备不可用，请打开蓝牙！", Toast.LENGTH_LONG).show(); finish(); return; }

if (!mBluetoothAdapter.isEnabled()) {

Toast.makeText(this, "请打开蓝牙并重新运行程序！", Toast.LENGTH_LONG).show(); finish(); return; } }

public void onStart() {