Android + Arduino蓝牙搜索栏控制伺服

Question

我正在尝试使用Android手机和arduino通过蓝牙控制伺服。一切正常但是当我使用搜索栏时，程序会大声喊叫。

方向按钮工作数据发送到ardunio，我可以操作伺服器。我在使用搜索栏进行数据传输时遇到问题。

package com.example.androidremote;

import java.io.IOException;
import java.io.OutputStream;



import android.app.Activity;
import android.bluetooth.BluetoothAdapter;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.SeekBar;
import android.widget.TextView;
import android.widget.SeekBar.OnSeekBarChangeListener;

public class AndroidRemoteActivity extends Activity implements OnClickListener {
    private TextView logview, textviiv;
    private Button connect, deconnect;
    private SeekBar seekbar;
    OutputStream outstream;
    private ImageView forwardArrow, backArrow, rightArrow, leftArrow, stop;
    private BluetoothAdapter mBluetoothAdapter = null;

    private String[] logArray = null;

    private BtInterface bt = null;

    static final String TAG = "Chihuahua";
    static final int REQUEST_ENABLE_BT = 3;

    //This handler listens to messages from the bluetooth interface and adds them to the log
    final Handler handler = new Handler() {
        public void handleMessage(Message msg) {
            String data = msg.getData().getString("receivedData");
            addToLog(data);            
        }
    };

    //this handler is dedicated to the status of the bluetooth connection
    final Handler handlerStatus = new Handler() {
        public void handleMessage(Message msg) {
            int status = msg.arg1;
            if(status == BtInterface.CONNECTED) {
                addToLog("Connected");
            } else if(status == BtInterface.DISCONNECTED) {
                addToLog("Disconnected");
            }
        }
    };

    //handles the log view modification
    //only the most recent messages are shown
    private void addToLog(String message){
        for (int i = 1; i < logArray.length; i++){
            logArray[i-1] = logArray[i];
        }
        logArray[logArray.length - 1] = message;

        logview.setText("");
        for (int i = 0; i < logArray.length; i++){
            if (logArray[i] != null){
                logview.append(logArray[i] + "\n");
            }
        }       
    }

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

        //first, inflate all layout objects, and set click listeners

        logview = (TextView)findViewById(R.id.logview);
        textviiv = (TextView)findViewById(R.id.textView1);
        //I chose to display only the last 3 messages
        logArray = new String[3];

        connect = (Button)findViewById(R.id.connect);
        connect.setOnClickListener(this);

        deconnect = (Button)findViewById(R.id.deconnect);
        deconnect.setOnClickListener(this);

        forwardArrow = (ImageView)findViewById(R.id.forward_arrow);
        forwardArrow.setOnClickListener(this);
        backArrow = (ImageView)findViewById(R.id.back_arrow);
        backArrow.setOnClickListener(this);
        rightArrow = (ImageView)findViewById(R.id.right_arrow);
        rightArrow.setOnClickListener(this);
        leftArrow = (ImageView)findViewById(R.id.left_arrow);
        leftArrow.setOnClickListener(this);
        stop = (ImageView)findViewById(R.id.stop);
        stop.setOnClickListener(this);

        seekbar=(SeekBar) findViewById(R.id.seekBar1);


        seekbar.setOnSeekBarChangeListener(new OnSeekBarChangeListener(){

            int progress=0;

            @Override
            public void onProgressChanged(SeekBar seekBar, int progressValue,
                    boolean fromUser) {
                // TODO Auto-generated method stub
                progress=progressValue;
                try{
                    outstream.write(progress);
                    textviiv.setText(String.valueOf(progress));
                }
                catch(IOException e){

                }
            }

            @Override
            public void onStartTrackingTouch(SeekBar seekBar) {
                // TODO Auto-generated method stub

            }

            @Override
            public void onStopTrackingTouch(SeekBar seekBar) {
                // TODO Auto-generated method stub

            }


        });
    }

    //it is better to handle bluetooth connection in onResume (ie able to reset when changing screens)
    @Override
    public void onResume() {
        super.onResume();
        //first of all, we check if there is bluetooth on the phone
        mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
        if (mBluetoothAdapter == null) {
            // Device does not support Bluetooth
            Log.v(TAG, "Device does not support Bluetooth");
        }
        else{
            //Device supports BT
            if (!mBluetoothAdapter.isEnabled()){
                //if Bluetooth not activated, then request it 
                Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
                startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT);
            }
            else{
                //BT activated, then initiate the BtInterface object to handle all BT communication
                bt = new BtInterface(handlerStatus, handler);
            }
        }
    }

    //called only if the BT is not already activated, in order to activate it
    protected void onActivityResult(int requestCode, int resultCode, Intent moreData){
        if (requestCode == REQUEST_ENABLE_BT){
            if (resultCode == Activity.RESULT_OK){
                //BT activated, then initiate the BtInterface object to handle all BT communication
                bt = new BtInterface(handlerStatus, handler);
            }
            else if (resultCode == Activity.RESULT_CANCELED)
                Log.v(TAG, "BT not activated");
            else
                Log.v(TAG, "result code not known");
        }
        else{
            Log.v(TAG, "request code not known");       
        }
     }

    //handles the clicks on various parts of the screen
    //all buttons launch a function from the BtInterface object
    @Override
    public void onClick(View v) {
        if(v == connect) {
            addToLog("Trying to connect");
            bt.connect();           
        } 
        else if(v == deconnect) {
            addToLog("closing connection");
            bt.close();         
        }
        else if(v == forwardArrow) {
            //addToLog("Move Forward");
            bt.sendData("F");
        }
        else if(v == backArrow) {
            //addToLog("Move back");
            bt.sendData("B");
        }
        else if(v == rightArrow) {
            //addToLog("Turn Right");
            bt.sendData("R");
        }
        else if(v == leftArrow) {
            //addToLog("Turn left");
            bt.sendData("L");
        }
        else if(v == stop) {
            //addToLog("Stopping");
            bt.sendData("S");
        }

        /*else if(v == seekbar) {
            //addToLog("Stopping");
            bt.sendData("progress");
        }*/
    }
}

我该怎么办？我正在犯错但我找不到。