从arduino接收android并显示图形

嗨，我的问题是当我运行程序时，我的应用程序崩溃了。下面发现了一个错误。 下面是我的代码列表

蓝牙代码如下所示

package com.example.tut;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.Set;
import java.util.UUID;
import android.app.Activity;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothSocket;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;
public class bluetooth extends Activity implements OnItemClickListener {
 public static void disconnect(){
    if (connectedThread != null){
        connectedThread.cancel();
        connectedThread = null;
}
}
    public static void gethandler(Handler handler){
    mHandler = handler;
}
static Handler mHandler = new Handler();
static ConnectedThread connectedThread;
public static final UUID MY_UUID    
UUID.fromString("00001101-0000-1000-8000-00805F9834FB");
protected static final int SUCCESS_CONNECT=0;
protected static final int MESSAGE_READ = 1;

ListView listview;
ArrayAdapter<String> listAdapter;
static BluetoothAdapter btAdapter;
Set<BluetoothDevice> devicesArray;
ArrayList<String> pairedDevices;
ArrayList<BluetoothDevice> devices;
IntentFilter filter;
BroadcastReceiver receiver;

@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_bluetooth);
    init();
    if (btAdapter==null){
        Toast.makeText(getApplicationContext(), "No BT detected", 
    0).show();
        finish();
    }else{
        if(!btAdapter.isEnabled()){
            turnOnBT();
        }
        getPairedDevices();
        startDiscovery();
            }   
        }
   private void getPairedDevices(){
    btAdapter.cancelDiscovery();
    btAdapter.startDiscovery();
    }
    private void    turnOnBT(){
    Intent intent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
    startActivityForResult(intent, 1);
    }
    private void startDiscovery(){
    devicesArray = btAdapter.getBondedDevices();
    if(devicesArray.size()>0){
    for(BluetoothDevice device:devicesArray){
        pairedDevices.add(device.getName());    
       }
       }
       }
private void init(){
listview = (ListView)findViewById(R.id.ListView);
listview.setOnItemClickListener(this);
listAdapter = new ArrayAdapter<String>(this,   
android.R.layout.simple_list_item_1, 0);
btAdapter = BluetoothAdapter.getDefaultAdapter();
pairedDevices = new ArrayList<String>();
filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
devices = new ArrayList<BluetoothDevice>();
receiver = new BroadcastReceiver(){
    @Override
    public void onReceive(Context context, Intent intent){
        String action = intent.getAction();
            if(BluetoothDevice.ACTION_FOUND.equals(action)){
            BluetoothDevice device = 
 intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
            devices.add(device);
            String s = "";
            for(int a=0; a<pairedDevices.size();a++){
                if(device.getName().equals(pairedDevices.get(a))){
                    s = "(Paired)";
                    break;
                }
            } 
    listAdapter.add(device.getName()+""+s+""+"\n"+device.getAddress());
                        }else if 
 (BluetoothAdapter.ACTION_DISCOVERY_STARTED.equals(action)){
                        }else if 
 (BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(action)){
                    }else if 
 (BluetoothAdapter.ACTION_STATE_CHANGED.equals(action)){
                    if (btAdapter.getState() == btAdapter.STATE_OFF){
                        turnOnBT();
                     }
                }
     }
    };
 registerReceiver(receiver, filter);
 IntentFilter filter = new   
 IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_STARTED);
 registerReceiver(receiver, filter);
 filter = new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
 registerReceiver(receiver, filter);
 filter = new 
 IntentFilter(BluetoothAdapter.ACTION_CONNECTION_STATE_CHANGED);
 }
@Override
protected void onPause(){
super.onPause();
unregisterReceiver(receiver);
}
protected void onActivityResult(int requestCode, int resultCode, Intent 
data){
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_CANCELED){
    Toast.makeText(getApplicationContext(), "Bluetooth must be enabled 
to continue", Toast.LENGTH_SHORT).show();
    }
    }
  @Override
  public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, 
 long  
arg3) {
// TODO Auto-generated method stub
if (btAdapter.isDiscovering()){
btAdapter.cancelDiscovery();
}
if (listAdapter.getItem(arg2).contains("(Paired)")){
BluetoothDevice selectedDevice = devices.get(arg2);
ConnectThread connect = 
new ConnectThread(selectedDevice);
connect.start();
}else { 
Toast.makeText(getApplicationContext(), "device is not paired",  
0).show();
  }
   }
    private class ConnectThread extends Thread {
    private final BluetoothSocket mmSocket;
    private final BluetoothDevice mmDevice;

    public ConnectThread(BluetoothDevice device) {
        // Use a temporary object that is later assigned to mmSocket,
        // because mmSocket is final
        BluetoothSocket tmp = null;
        mmDevice = device;

        // Get a BluetoothSocket to connect with the given 
  BluetoothDevice
        try {
            // MY_UUID is the app's UUID string, also used by the server 
  code
            tmp = device.createRfcommSocketToServiceRecord(MY_UUID);
        } catch (IOException e) { }
        mmSocket = tmp;
    }

    public void run() {
        // Cancel discovery because it will slow down the connection
        btAdapter.cancelDiscovery();

        try {
            // Connect the device through the socket. This will block
            // until it succeeds or throws an exception
            mmSocket.connect();
        } catch (IOException connectException) {
            // Unable to connect; close the socket and get out
            try {
                mmSocket.close();
            } catch (IOException closeException) { }
            return;
        }

        // Do work to manage the connection (in a separate thread)
    mHandler.obtainMessage(SUCCESS_CONNECT,mmSocket ).sendToTarget();
     }

     /** Will cancel an in-progress connection, and close the socket */
     public void cancel() {
        try {
            mmSocket.close();
        } catch (IOException e) { }
    }
    }
static class ConnectedThread extends Thread {
    private static final int MESSAGE_READ = 0;
    private final BluetoothSocket mmSocket;
    private final InputStream mmInStream;
    private final OutputStream mmOutStream;

    public ConnectedThread(BluetoothSocket socket) {
        mmSocket = 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 = tmpIn;
        mmOutStream = tmpOut;
     }
 public void run() {
        byte[] buffer;  // buffer store for the stream
        int bytes; // bytes returned from read()

        // Keep listening to the InputStream until an exception occurs
         while (true) {
            try {
                try{
                    sleep(30);
                } catch(InterruptedException e){
                    e.printStackTrace();
                }
                buffer = new byte[1024];
                // Read from the InputStream
                bytes = mmInStream.read(buffer);
                // Send the obtained bytes to the UI activity
                mHandler.obtainMessage(MESSAGE_READ, bytes, -1, buffer)
                        .sendToTarget();
            } catch (IOException e) {
                break;
            }
         }
      }
  /* Call this from the main activity to send
      *  data to the remote device */
     public void write(String income) {
        try {
        mmOutStream.write(income.getBytes());
        try {  
            Thread.sleep(20);
                }catch(InterruptedException e){
            e.printStackTrace();
        }
                } catch (IOException e) { }
    }

    /* Call this from the main activity to shutdown the connection */


    public void cancel() {
        try {
            mmSocket.close();
        } catch (IOException e) { }
    }
    }
    }*

布局蓝牙

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res
/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent" >

<TextView
    android:id="@+id/tvPd"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentTop="true"
    android:text="Paired Devices" >
</TextView>

<ListView
    android:id="@+id/listView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_above="@+id/bConnectNew"
    android:layout_alignParentLeft="true"
    android:layout_below="@+id/tvPd" >
</ListView>

</RelativeLayout>

---

在

MainActivity

的

init

方法中，替换

graphView.addView(graphView);

与

您不应该向自身添加视图

---

这应该可以解决问题。

请格式化您的代码，说明它在哪里崩溃，并包括堆栈跟踪？先生，我已经编辑了这个问题。我也已经格式化了它，因为我是android编程的初学者，我不知道我在代码中调试了什么，但是当我运行它的时候。并没有错误，它只是在跟踪的顶部崩溃：`stack overflow on call to Landroid/view/view；。getRawLayoutDirection`表示您的代码有一些无止境的递归。那么这意味着什么呢，先生？我将更改哪一行？作为猜测，请查看

setContentView（R.layout.activity\u蓝牙）我不是安卓黑客。也许有一位大师有一个想法。它解决了应用程序运行时的问题，但我没有测试图表，只是测试了连接。我会更新你妈妈，如果图形也工作。妈妈，我能问一个关于编码的问题吗？：）我不懂一些密码，露丝夫人，非常感谢：）做完了，妈妈：）好的，妈妈：）谢谢你的回答：）你是这里的大师之一吗？：不客气。不，我不是。我只知道一点可以帮助你的东西。这个代码的目的是什么？Log.d（“strIncom”，strIncom）；如果（strIncom.indexOf（'.'）==2和&strIncom.indexOf（'s'）==0{strIncom=strIncom.replace（“s”），“”）；如果（isFloatNumber（strIncom））{Series.appendData（new GraphViewData（graph2LastXValue，Double.parseDouble（strIncom）），AutoScrollX）；您可以检查并获取有关使用字符串的详细说明。
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res
/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent" >

<TextView
    android:id="@+id/tvPd"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentTop="true"
    android:text="Paired Devices" >
</TextView>

<ListView
    android:id="@+id/listView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_above="@+id/bConnectNew"
    android:layout_alignParentLeft="true"
    android:layout_below="@+id/tvPd" >
</ListView>

</RelativeLayout>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/bg"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:keepScreenOn="true"
android:orientation="horizontal"
android:weightSum="100" >

<LinearLayout
    android:id="@+id/Graph"
    android:layout_width="fill_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal"
    android:layout_weight="15" />

<LinearLayout
    android:id="@+id/LL2"
    android:layout_width="fill_parent"
    android:layout_height="match_parent"
    android:layout_weight="85"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/tvBluetooth"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:text="Bluetooth"
        android:textSize="15dp" 
        android:textColor="@color/white"/>

    <Button
        android:id="@+id/bConnect"
        android:layout_width="fill_parent"
        android:layout_height="30dp"
        android:text="Connect"
        android:textSize="10dp" 
        android:textColor="@color/white"/>

    <Button
        android:id="@+id/bDisconnect"
        android:layout_width="fill_parent"
        android:layout_height="30dp"
        android:text="Disconnect"
        android:textSize="10dp" 
        android:textColor="@color/white"/>

    <TextView
        android:id="@+id/tvControl"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:text="Control"
        android:textSize="15dp"
        android:textColor="@color/white" />

    <ToggleButton
        android:id="@+id/tbStream"
        android:layout_width="fill_parent"
        android:layout_height="50dp"
        android:layout_alignParentLeft="true"
        android:checked="false"
        android:textOff="Start Stream"
        android:textOn="Start Stream" 
        android:textColor="@color/white"/>

    <ToggleButton
        android:id="@+id/tbScroll"
        android:layout_width="fill_parent"
        android:layout_height="50dp"
        android:layout_alignParentLeft="true"
        android:checked="true"
        android:textOff="Auto Scroll X"
        android:textOn="Auto Scroll X"
        android:textColor="@color/white" />

    <ToggleButton
        android:id="@+id/tbLock"
        android:layout_width="fill_parent"
        android:layout_height="50dp"
        android:layout_alignParentLeft="true"
        android:checked="true"
        android:textOff="Lock    Xaxis"
        android:textOn="Lock    Xaxis"
        android:textColor="@color/white" />

    <LinearLayout
        android:id="@+id/LLX"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:orientation="horizontal"
        android:weightSum="100" >

        <Button
            android:id="@+id/bXminus"
            android:layout_width="match_parent"
            android:layout_height="30dp"
            android:layout_weight="50"
            android:text="-"
            android:textSize="12dp" 
            android:textColor="@color/white"/>

        <Button
            android:id="@+id/bXplus"
            android:layout_width="match_parent"
            android:layout_height="30dp"
            android:layout_weight="50"
            android:text="+"
            android:textSize="12dp" 
            android:textColor="@color/white"/>
    </LinearLayout>
</LinearLayout>

</LinearLayout>

#define sensorPin A0

void setup() {
Serial.begin(115200);
}

void loop() {
 if(Serial.available()>0){ 
char re = Serial.read();

switch(re){
 case 'E':
 start();
 break; 
}
}
}

void start(){
while(1){
Serial.print('s');
Serial.print(floatMap(analogRead(sensorPin),0,1023,0,5),2);
delay(10);

if(Serial.available()>0){
if (Serial.read()=='Q') return;
}
} 
}

float floatMap(float x, float inMin, float inMax, float outMin, float  
outMax){
return (x-inMin)*(outMax-outMin)/(inMax-inMin)+outMin;
}

graphView.addView(graphView);

GraphView.addView(graphView);