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  1. package com.example.chengforapp.myapplication;
  2.  
  3. import android.bluetooth.BluetoothAdapter;
  4. import android.bluetooth.BluetoothDevice;
  5. import android.bluetooth.BluetoothSocket;
  6. import android.content.Intent;
  7. import android.content.res.Resources;
  8. import android.graphics.Bitmap;
  9. import android.graphics.BitmapFactory;
  10. import android.os.Bundle;
  11. import android.os.Handler;
  12. import android.support.v7.app.AppCompatActivity;
  13. import android.util.Log;
  14. import android.view.View;
  15. import android.widget.AdapterView;
  16. import android.widget.ArrayAdapter;
  17. import android.widget.Button;
  18. import android.widget.ImageView;
  19. import android.widget.ListView;
  20. import android.widget.TextView;
  21. import android.widget.Toast;
  22.  
  23.  
  24. import java.io.IOException;
  25. import java.io.InputStream;
  26. import java.io.OutputStream;
  27. import java.text.SimpleDateFormat;
  28. import java.util.Set;
  29. import java.util.UUID;
  30.  
  31. public class MainActivity extends AppCompatActivity {
  32.  
  33.  
  34.     private Button button_paired;
  35.     private Button button_find;
  36.     private TextView show_data;
  37.     private ListView event_listView;
  38.     private TextView DangerText;
  39.     private ImageView image;
  40.     private BluetoothAdapter mBluetoothAdapter;
  41.     private ArrayAdapter<String> deviceName;
  42.     private ArrayAdapter<String> deviceID;
  43.     private Set<BluetoothDevice> pairedDevices;
  44.     private String choseID;
  45.     private BluetoothDevice bleDevice;
  46.     private BluetoothSocket bluesoccket; //   becareful
  47.     private InputStream mmInputStream;
  48.     private OutputStream mmOutputStream;//2222222222222
  49.     Thread workerThread;
  50.     volatile boolean stopWorker;
  51.     private int readBufferPosition;
  52.     private byte[] readBuffer;
  53.     private String uid;
  54.     private static final int REQUEST_FINE_LOCATION_PERMISSION = 102;
  55.     public int PMvalue = 0;
  56.     public Resources res;
  57.     public Bitmap a;
  58.  
  59.  
  60.     protected void onCreate(Bundle savedInstanceState) {
  61.         super.onCreate(savedInstanceState);
  62.         setContentView(R.layout.activity_main); //改過
  63.         res = getResources();
  64.         a = BitmapFactory.decodeResource(res, R.drawable.a000);
  65.         getView();
  66.         setListener();
  67.         deviceName = new ArrayAdapter<String>(this, android.R.layout.simple_expandable_list_item_1);
  68.         deviceID = new ArrayAdapter<String>(this, android.R.layout.simple_expandable_list_item_1);
  69.         DangerText.setText(" ");
  70.         image.setImageResource(R.drawable.a000);
  71.     }
  72.  
  73.     private void getView() {
  74.         button_paired = (Button) findViewById(R.id.btn_paired);
  75.         show_data = (TextView) findViewById(R.id.txtShow);
  76.         event_listView = (ListView) findViewById(R.id.Show_B_List);
  77.         button_find = (Button) findViewById(R.id.btn_conn);
  78.         DangerText = (TextView) findViewById(R.id.DangerText);
  79.         image = (ImageView) findViewById(R.id.pmimage);
  80.     }
  81.  
  82.     private void setListener() {
  83.         button_paired.setOnClickListener(new Button.OnClickListener() {
  84.             @Override
  85.             public void onClick(View v) {
  86.                 findPBT();
  87.             }
  88.         });
  89.         button_find.setOnClickListener(new Button.OnClickListener() {
  90.             @Override
  91.             public void onClick(View v) {
  92.                 findPBT();
  93.             }
  94.         });
  95.         event_listView.setAdapter(deviceName);
  96.         event_listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
  97.             @Override
  98.             public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
  99.  
  100.                 choseID = deviceID.getItem(position);
  101.                 try {
  102.                     openBT();
  103.                 } catch (IOException e) {
  104.                     e.printStackTrace();
  105.                 }
  106.                 Toast.makeText(MainActivity.this, "選擇了:" + choseID, Toast.LENGTH_SHORT).show();
  107.                 deviceName.clear();
  108.             }
  109.         });
  110.     }
  111.  
  112.     private void findPBT() {
  113.         mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
  114.         if (mBluetoothAdapter != null) {
  115.             show_data.setText("No bluetooth adapter available");
  116.         }
  117.         if (!mBluetoothAdapter.isEnabled()) {
  118.             Intent enableBluetooth = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
  119.             startActivityForResult(enableBluetooth, 1);
  120.         }
  121.         pairedDevices = mBluetoothAdapter.getBondedDevices();
  122.         if (pairedDevices.size() > 0) {
  123.             for (BluetoothDevice device : pairedDevices) {
  124.                 String str = "已配對完成的裝置有" + device.getName() + " " + device.getAddress() + "\n";
  125.                 uid = device.getAddress();
  126.                 bleDevice = device;
  127.                 deviceName.add(str);
  128.                 deviceID.add(uid);
  129.             }
  130.             event_listView.setAdapter(deviceName);
  131.         }
  132.     }
  133.  
  134.     private void openBT() throws IOException {
  135.         UUID uuid = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");
  136.         if (bleDevice != null) {
  137.             bluesoccket = bleDevice.createRfcommSocketToServiceRecord(uuid);
  138.  
  139.             bluesoccket.connect();
  140.             mmOutputStream = bluesoccket.getOutputStream();
  141.             mmInputStream = bluesoccket.getInputStream();
  142.             beginListenForData();
  143.             show_data.setText("Bluetooth Opened:"+bleDevice.getName()+""+bleDevice.getAddress());//此行有可能要刪除
  144.             View b1 = findViewById(R.id.btn_conn);
  145.             View b2 = findViewById(R.id.btn_paired);
  146.             View b3 = findViewById(R.id.Show_B_List);
  147.  
  148.             b1.setVisibility(View.INVISIBLE);
  149.             b2.setVisibility(View.INVISIBLE);
  150.             b3.setVisibility(View.INVISIBLE);
  151.         }
  152.     }
  153.  
  154.     private void beginListenForData() {
  155.         final Handler handler = new Handler();
  156.         final byte delimiter = 10;
  157.  
  158.         stopWorker = false;
  159.         readBufferPosition = 0;
  160.         readBuffer = new byte[1024];
  161.         workerThread = new Thread(new Runnable() {
  162.             @Override
  163.  
  164.             public void run() {
  165.                 while (!Thread.currentThread().isInterrupted() && !stopWorker) {
  166.                     try {
  167.                         int bytesAvailable = mmInputStream.available();
  168.                         if (bytesAvailable > 0) {
  169.                             byte[] packetBytes = new byte[bytesAvailable];
  170.                             mmInputStream.read(packetBytes);
  171.                             for (int i = 0; i < bytesAvailable; i++) {
  172.                                 byte b = packetBytes[i];
  173.                                 readBufferPosition++;
  174.                                 if (b == delimiter) {
  175.                                     byte[] encodedBytes = new byte[readBufferPosition];
  176.                                     System.arraycopy(readBuffer,i-readBufferPosition,encodedBytes,0,encodedBytes.length);
  177.                                     final String data = new String(encodedBytes);
  178.                                     PMvalue = 0;
  179.                                     for (int j = 0; j < encodedBytes.length - 1; j++) {
  180.                                         PMvalue = PMvalue * 10 + encodedBytes[j] - 48;
  181.                                     }
  182.  
  183.                                     String tmp1 = String.valueOf(PMvalue);
  184.                                     Log.d("value", tmp1);
  185.                                     readBufferPosition = 0;
  186.                                     handler.post(new Runnable() {
  187.                                         @Override
  188.                                         public void run() {
  189.                                             long date = System.currentTimeMillis();
  190.                                             TextView tvDisplayDate = (TextView) findViewById(R.id.DATE);
  191.                                             SimpleDateFormat sdf = new SimpleDateFormat("MMM MM dd, yyyy h:mm a");
  192.                                             String dateString = sdf.format(date);
  193.                                             tvDisplayDate.setText("Update Time: " + dateString);
  194.                                             if (PMvalue < 36) {
  195.                                                 if (PMvalue > 23)
  196.                                                     a = BitmapFactory.decodeResource(res, R.drawable.a03);
  197.                                                 else if (PMvalue > 11)
  198.                                                     a = BitmapFactory.decodeResource(res, R.drawable.a02);
  199.                                                 else if (PMvalue > 0)
  200.                                                     a = BitmapFactory.decodeResource(res, R.drawable.a01);
  201.                                                 image.setImageBitmap(a);
  202.                                                 DangerText.setText("良好");
  203.                                                 show_data.setText(data);
  204.                                             } else if (PMvalue < 54) {
  205.                                                 if (PMvalue > 47)
  206.                                                     a = BitmapFactory.decodeResource(res, R.drawable.a04);
  207.                                                 else if (PMvalue > 41)
  208.                                                     a = BitmapFactory.decodeResource(res, R.drawable.a05);
  209.                                                 else if (PMvalue > 35)
  210.                                                     a = BitmapFactory.decodeResource(res, R.drawable.a06);
  211.                                                 image.setImageBitmap(a);
  212.                                                 DangerText.setText("警戒");
  213.                                                 show_data.setText(data);
  214.                                             } else if (PMvalue < 71) {
  215.                                                 if (PMvalue > 64)
  216.                                                     a = BitmapFactory.decodeResource(res, R.drawable.a09);
  217.                                                 else if (PMvalue > 58)
  218.                                                     a = BitmapFactory.decodeResource(res, R.drawable.a08);
  219.                                                 else if (PMvalue > 53)
  220.                                                     a = BitmapFactory.decodeResource(res, R.drawable.a07);
  221.                                                 image.setImageBitmap(a);
  222.                                                 DangerText.setText("過量");
  223.                                                 show_data.setText(data);
  224.                                             } else if (PMvalue > 70) {
  225.                                                 a = BitmapFactory.decodeResource(res, R.drawable.a10);
  226.                                                 image.setImageBitmap(a);
  227.                                                 DangerText.setText("危險");
  228.                                                 show_data.setText(data);
  229.                                             }
  230.                                         }               //沒
  231.                                     });
  232.                                     //有
  233.                                 } else {
  234.                                     readBuffer[readBufferPosition++] = b;
  235.                                 }
  236.                             }
  237.                         }
  238.                     } catch (IOException ex) {
  239.                         stopWorker = true;
  240.                     }
  241.                 }
  242.             }
  243.         });
  244.         workerThread.start();
  245.  
  246.  
  247.     }
  248. }
  249.  
Success #stdin #stdout 0.08s 27628KB
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https://ideone.com/5qJ3fM
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
public

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