一区二区三区在线-一区二区三区亚洲视频-一区二区三区亚洲-一区二区三区午夜-一区二区三区四区在线视频-一区二区三区四区在线免费观看

服務器之家：專注于服務器技術及軟件下載分享
分類導航

PHP教程|ASP.NET教程|Java教程|ASP教程|編程技術|正則表達式|C/C++|IOS|C#|Swift|Android|VB|R語言|JavaScript|易語言|vb.net|

服務器之家 - 編程語言 - Android - android實現藍牙app代碼

android實現藍牙app代碼

2022-02-25 15:23tangzheng828 Android

這篇文章主要為大家詳細介紹了android實現藍牙app的代碼，具有一定的參考價值，感興趣的小伙伴們可以參考一下

本文實例為大家分享了android實現藍牙app的具體代碼，供大家參考，具體內容如下

?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
private BluetoothGatt bluetoothGatt;
private BluetoothGattService gattService;
private BluetoothGattCharacteristic gattCharacteristic;
private BluetoothManager bluetoothManager;
private BluetoothAdapter bluetoothAdapter;
private List<BluetoothDevice> devices = new ArrayList<>();
 
private UUID serviceUUID;  //不同設備 不同uuid
private UUID characteristicUUID;   //不同設備 不同uuid
private final UUID service4UUID= UUID.fromString("0000fff0-0000-1000-8000-00805f9b34fb"); 
private final UUID charAUUID = UUID.fromString("0000fffa-0000-1000-8000-00805f9b34fb");
 
private LightReceiver lightReceiver;
private ScanReceiver scanReceiver;
private ListView listView;
private TextView tvrefresh;
private String lightAction;
 
@Override
protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  Log.i("tag", "MainActivity  onCreate()");
  //
  listView = (ListView) findViewById(R.id.lv_bluetooth);
  tvrefresh = (TextView) findViewById(R.id.tv_refresh_bluetooth);
  tvrefresh.setOnClickListener(this);
  openBluetooth();
  registeLigthReceiver();
  registeScanReceiver();
 
}
 
@Override
protected void onStart() {
  super.onStart();
  Log.i("tag", "MainActivity  onStart()");
  bluetoothScan();
}
 
//返回
@Override
public boolean onKeyUp(int keyCode, KeyEvent event) {
  Log.i("tag", "MainActivity  onKeyUp()");
  this.finish();
  return super.onKeyUp(keyCode, event);
}
 
//重新掃描藍牙
@Override
public void onClick(View view) {
  switch (view.getId()) {
    case R.id.tv_refresh_bluetooth:
      //藍牙掃描
      bluetoothScan();
      break;
    default:
      break;
  }
}
 
//打開本地藍牙
private void openBluetooth() {
  Log.i("tag", "openLocalBluetooth()");
  //檢查手機是否支持藍牙4.0
  if (!getPackageManager().hasSystemFeature(PackageManager.FEATURE_BLUETOOTH_LE)) {
    Toast.makeText(this, "手機不支持藍牙4.0", Toast.LENGTH_SHORT).show();
    finish();
  }
  //調用系統服務的方式，請求開啟藍牙
  bluetoothManager = (BluetoothManager) getSystemService(Context.BLUETOOTH_SERVICE);
  bluetoothAdapter = bluetoothManager.getAdapter();
  //開啟藍牙
  if (!bluetoothAdapter.isEnabled()) {
    bluetoothAdapter.enable();
  }
}
 
//開始藍牙掃描  掃描到一個添加一個
private void bluetoothScan() {
  Log.i("tag", "bluetoothScan()");
  if (bluetoothAdapter == null) {
    openBluetooth();
  }
  if (!bluetoothAdapter.isDiscovering()) {
    bluetoothAdapter.startDiscovery();  //回調
  } else {
    Toast.makeText(this, "掃描中..", Toast.LENGTH_SHORT).show();
  }
}
 
//更新藍牙列表中的數據
private void updateUi() {
  Log.i("tag", "updateUi()");
  if (devices != null && devices.size() > 0) {
    BlueAdapter adapter = new BlueAdapter(this, devices);
    listView.setAdapter(adapter);
    adapter.notifyDataSetChanged();
  } else {
    Toast.makeText(this, "附近沒有藍牙", Toast.LENGTH_SHORT).show();
  }
}
 
//取得gatt 對應的service
private BluetoothGattService getGattService(BluetoothGatt gatt, UUID serviceUUID) {
  List<BluetoothGattService> gattServices = gatt.getServices();
  for (BluetoothGattService gattService : gattServices) {
    if (gattService.getUuid().equals(serviceUUID)) {
      return gattService;
    }
  }
  return null;
}
 
//取得service對應的characteristic
private BluetoothGattCharacteristic getGattCharacteristic(BluetoothGattService gattService, UUID characteristicUUID) {
  List<BluetoothGattCharacteristic> gattCharacteristics = gattService.getCharacteristics();
  for (BluetoothGattCharacteristic gattCharacteristic : gattCharacteristics) {
    if (gattCharacteristic.getUuid().equals(characteristicUUID)) {
      return gattCharacteristic;
    }
  }
  return null;
}
 
//注冊藍牙掃描監聽
private void registeScanReceiver() {
  Log.i("tag", "registeScanReceiver()");
  scanReceiver = new ScanReceiver();
  IntentFilter filter = new IntentFilter();
  filter.addAction(BluetoothDevice.ACTION_FOUND);
  filter.addAction(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
  registerReceiver(scanReceiver, filter);
}
 
//定義藍牙掃描監聽類 添加device ， 更新界面
class ScanReceiver extends BroadcastReceiver {
 
  @Override
  public void onReceive(Context context, Intent intent) {
    Log.i("tag", " BluetoothReceiver / ScanReceiver onReceive()  action=" + intent.getAction());
    String scanAction = intent.getAction();
    if (scanAction.equals(BluetoothDevice.ACTION_FOUND)) {
      BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
      if (!devices.contains(device)) {
        devices.add(device);
        if (CacheUtils.getBlueDeviceString(MainActivity1.this, device.getAddress()).equals("")) {
          CacheUtils.putBlueDeviceString(MainActivity1.this, device.getAddress(), device.getName());
        }
        updateUi();
      }
    } else if (scanAction.equals(BluetoothAdapter.ACTION_DISCOVERY_FINISHED)) {
      if (devices == null || devices.size() == 0) {
        Toast.makeText(MainActivity1.this, "附近沒有發現藍牙設備", Toast.LENGTH_SHORT).show();
      }
    }
  }
}
 
//注冊燈光監聽
private void registeLigthReceiver() {
  Log.i("tag", "registeReceiver()");
  lightReceiver = new LightReceiver();
  IntentFilter filter = new IntentFilter();
  filter.addAction("openLight");
  filter.addAction("closeLight");
  registerReceiver(lightReceiver, filter);
}
 
//定義燈控監聽類
class LightReceiver extends BroadcastReceiver {
 
  @Override
  public void onReceive(Context context, Intent intent) {
 
    Log.i("tag", " BluetoothReceiver  /LightReceiver onReceive()  action=" + intent.getAction());
    //
    String address = intent.getStringExtra("bluetoothAddress");  //從adapter取得的數據
    lightAction = intent.getAction();
    // if()   不同設備  不同serviceUUID，不同的characteristicUUID 自己確定
    serviceUUID=service4UUID;
    characteristicUUID=charAUUID;
 
    if (bluetoothAdapter == null) {
      openBluetooth();
    }
    BluetoothDevice device = bluetoothAdapter.getRemoteDevice(address); 
    MyBluetoothGattCallback gattCallback = new MyBluetoothGattCallback();
    bluetoothGatt = device.connectGatt(MainActivity1.this, false, gattCallback);  //回調
 
  }
}
 
//藍牙連接/通信回調
class MyBluetoothGattCallback extends android.bluetooth.BluetoothGattCallback {
  @Override
  public void onConnectionStateChange(BluetoothGatt gatt, int status, int newState) {
    super.onConnectionStateChange(gatt, status, newState);
    Log.i("tag", "MyBluetoothGattCallback  onConnectionStateChange()  newState=" + newState);
    if (newState == BluetoothProfile.STATE_CONNECTED) {
      gatt.discoverServices();       //連接成功，開始搜索服務，一定要調用此方法，否則獲取不到服務
      Log.i("tag", "MyBluetoothGattCallback  STATE_CONNECTED  ");
    } else if (newState == BluetoothProfile.STATE_DISCONNECTED) {
      Log.i("tag", "MyBluetoothGattCallback  STATE_DISCONNECTED");
    }
  }
 
  @Override
  public void onServicesDiscovered(BluetoothGatt gatt, int status) {
    super.onServicesDiscovered(gatt, status);
    Log.i("tag", "MyBluetoothGattCallback  onServicesDiscovered() status=" + status);
 
    if (lightAction.equals("openLight") || lightAction.equals("closeLight")) {  //避免 不停更新
      if (gattService == null || gattCharacteristic == null || !serviceUUID.equals(service4UUID) || !characteristicUUID.equals(charAUUID)) {
        gattService = getGattService(gatt, serviceUUID);
        if (gattService != null) {
          gattCharacteristic = getGattCharacteristic(gattService, characteristicUUID);
          if (gattCharacteristic != null) {
            gatt.setCharacteristicNotification(gattCharacteristic, true);
            gatt.connect();
          }
        }
      }
      if (lightAction.equals("openLight")) {
        gattCharacteristic.setValue("openLight"); //這里自己設置 藍牙模組需要的數據
        gatt.writeCharacteristic(gattCharacteristic);
      } else if (lightAction.equals("closeLight")) {
        gattCharacteristic.setValue("closeLight"); //這里自己設置 藍牙模組需要的數據
        gatt.writeCharacteristic(gattCharacteristic);
      }
      lightAction = "";
      gatt.readRemoteRssi();
    }
  }
}
 
@Override
protected void onDestroy() {
  super.onDestroy();
  Log.i("tag", "onDestroy()");
  if (bluetoothAdapter != null) {
    bluetoothAdapter.disable();
    bluetoothAdapter = null;
  }
  if (bluetoothGatt != null) {
    bluetoothGatt.disconnect();
    bluetoothGatt.close();
    bluetoothGatt = null;
  }
 
  if (lightReceiver != null) {
    unregisterReceiver(lightReceiver);
    lightReceiver = null;
  }
  if (scanReceiver != null) {
    unregisterReceiver(scanReceiver);
    scanReceiver = null;
  }
}

以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持服務器之家。

原文鏈接：https://blog.csdn.net/tangzheng828/article/details/52672345

延伸 · 閱讀

精彩推薦
主站蜘蛛池模板： 久久久久青草大香线综合精品 | 蜜桃久久久亚洲精品成人 | 暖暖 免费 高清 日本 在线 | 成年视频在线播放 | 无人影院在线播放 | 涩涩国产精品福利在线观看 | 操到翻白眼 | 国产一卡二卡四卡免费 | 免费观看国产精品 | 99视频精品全部免费观看 | 国产99久久九九精品免费 | 日日射视频| 国产亚洲女在线精品 | 欧美一级艳片视频免费观看 | 2021福利视频 | 免费国产高清视频 | 男男playh片在线观看 | 日本免费在线播放 | 欧美日韩高清观看一区二区 | 校园春色自拍偷拍 | 午夜AV内射一区二区三区红桃视 | 欧美贵妇videos办公室360 | 精品日韩一区二区三区 | 1314酒色 | 国产精品夜夜爽张柏芝 | 国产福利自产拍在线观看 | 鸥美毛片 | 亚洲国产99 | 性欧美xxxxx护士另类 | 国产精品网页 | 奇米9999| 午夜国产小视频 | 欧美综合一区二区三区 | 国产美女下面流出白浆视频 | 欧美日韩视频在线成人 | 欧美综合一区二区三区 | 波多野结衣在线观看视频 | 我的青梅竹马是消防员2季未增删免费 | 女人爽到喷水的视频免费看 | 久久青草费线频观看国产 | 欧美大陆日韩一区二区三区 |