android!蓝牙BLE

废话不多，先上代码：

蓝牙BLE：

第一步：蓝牙适配器

BluetoothManager bluetoothManager = (BluetoothManager) getSystemService(BLUETOOTH_SERVICE);
adapter = bluetoothManager.getAdapter();
if(!adapter.isEnabled()){
//如果蓝牙设备不可用的话,创建一个intent对象,该对象用于启动一个Activity,提示用户启动蓝牙适配器
Intent intent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivity(intent);
}
scanLeDevice(true);
}

第二步，scanLeDevice

// 扫描ble设备函数
private void scanLeDevice(boolean enable) {
if (enable) {
// Stops scanning after a pre-defined scan period.
mHandler.postDelayed(new Runnable() {
@Override
public void run() {
mScanning = false;
adapter.stopLeScan(mLeScanCallback);
}
}
}, SCAN_PERIOD);
mScanning = true;
adapter.startLeScan(mLeScanCallback);
} else {
mScanning = false;
adapter.stopLeScan(mLeScanCallback);
}
}

第三步：mLeScanCallback的声明

// Device scan callback.
private BluetoothAdapter.LeScanCallback mLeScanCallback = new BluetoothAdapter.LeScanCallback() {
@Override
public void onLeScan(final BluetoothDevice device, int rssi, byte[] scanRecord) {
runOnUiThread(new Runnable() {
@Override
public void run() {
System.err.println(device.getAddress()+"*"+device.getName());
bluetoothDevicesSet.add(device);
}
});
}
};

此时，你应该已经可以打印出获得的设备，你可以将它们放在一个listview中，并对此listview设置监听：

// 点击列表中的设备名称
listView.setOnItemClickListener(new AdapterView.OnItemClickListener(){
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
// 建立链接
BluetoothDevice btd = bluetoothDevicesList.get(arg2);
bluetoothGatt = btd.connectGatt(getApplicationContext(), false, gattCallback);
System.out.println(bluetoothGatt.connect());
System.out.println(bluetoothGatt.discoverServices());
}

});

接下来是gattCallback的声明：

private BluetoothGattCallback gattCallback = new BluetoothGattCallback() {
@Override
public void onConnectionStateChange(BluetoothGatt gatt, int status,
int newState) {
String intentAction;
if (newState == BluetoothProfile.STATE_CONNECTED) {
//intentAction = ACTION_GATT_CONNECTED;
mConnectionState = STATE_CONNECTED;
//broadcastUpdate(intentAction);
Log.i(TAG, "Connected to GATT server.");
Log.i(TAG, "Attempting to start service discovery:" +
bluetoothGatt.discoverServices());

} else if (newState == BluetoothProfile.STATE_DISCONNECTED) {
//intentAction = ACTION_GATT_DISCONNECTED;
mConnectionState = STATE_DISCONNECTED;
Log.i(TAG, "Disconnected from GATT server.");
//broadcastUpdate(intentAction);
}
}

@Override
// New services discovered
public void onServicesDiscovered(BluetoothGatt gatt, int status) {
if (status == BluetoothGatt.GATT_SUCCESS) {
//broadcastUpdate(ACTION_GATT_SERVICES_DISCOVERED);
Log.i(TAG, "BluetoothGatt.GATT_SUCCES:" + status);
// 连接成功
List<BluetoothGattService> gattServiceList = gatt.getServices();
for (BluetoothGattService gattService : gattServiceList){
List<BluetoothGattCharacteristic> gattCharacteristics =gattService.getCharacteristics();
for (final BluetoothGattCharacteristic gattCharacteristic: gattCharacteristics) {
//UUID_KEY_DATA是可以跟蓝牙模块串口通信的Characteristic
if(gattCharacteristic.getUuid().toString().equals("adabfb02-6e7d-4601-bda2-bffaa68956ba")){
//测试读取当前Characteristic数据，会触发mOnDataAvailable.onCharacteristicRead()
//                            mHandler.postDelayed(new Runnable() {
//                                @Override
//                                public void run() {
//                                    gatt.readCharacteristic(gattCharacteristic);
//                                }
//                            }, 500);
//接受Characteristic被写的通知,收到蓝牙模块的数据后会触发mOnDataAvailable.onCharacteristicWrite()
gatt.setCharacteristicNotification(gattCharacteristic, true);
//设置数据内容
gattCharacteristic.setValue("1234567");
//往蓝牙模块写入数据
System.out.println("writeCharacteristic*"+gatt.writeCharacteristic(gattCharacteristic));
}
}

}
} else {
Log.w(TAG, "onServicesDiscovered received: " + status);
}
}

};

好多代码啊～现在差不多了～～