Android Ble4.0開發

最近在作一個藍牙的項目，是Blu4.0，Android系統支持是4.3版本以上（爲此特意賣了個手機，）。

固然也參考了很多大牛的的微博，說的都不錯，再次特意感謝

http://blog.csdn.net/hellogv/article/details/6036849

http://blog.csdn.net/hellogv/article/details/6042091

http://www.cnblogs.com/zdz8207/archive/2012/10/17/bluetooth_ble_android.html

http://blog.csdn.net/changemyself/article/details/8454633

http://blog.csdn.net/hellogv/article/details/24267685

調試Ble硬件的讀寫的App

http://www.wandoujia.com/apps/com.siflink.ble.mgr

這個App，能夠在本身app爲開發好的狀況下，簡單的測試下讀寫特徵值，不知道爲何，好像只能寫入一個值。也許是我不知道怎麼寫入多個值。

下面這個是從github上搜索的一個ble4.0的代碼

https://github.com/StevenRudenko/BleSensorTag

網上有不少關於Ble4.0的開發，再次也不作介紹，反正都是差很少的。

一、聲明藍牙的權限

    <uses-permission android:name="android.permission.BLUETOOTH" />
    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
    <uses-permission android:name="android.permission.WRITE_SETTINGS" />
    <uses-permission android:name="android.permission.WRITE_SECURE_SETTINGS" />

二、監聽搜索的回調

BleBluetoothGattCallback gattCallback = new BleBluetoothGattCallback();
	gattCallback.setOnBleReadCallback(new OnBleReadCallback() {
		public void onReadData(byte[] data) {


	}


	public void onReadComple() {
		McLog.mByStackTrace();
	}


	public void onConnect() {
		showToast("鏈接設備成功");
		isConnect = true;
	}


	public void onDisConnect() {
		showToast("斷開設備");
		isConnect = false;
	}
});
BluetoothAdapter.LeScanCallback leScanCallback = new BluetoothAdapter.LeScanCallback() {
		public void onLeScan(BluetoothDevice device, int rssi, byte[] scanRecord) {
			McLog.mByStackTrace();
			String address = device.getAddress();
			String name = device.getName();
			String t = name + "[" + address + "]";
			McLog.i("find a device %s", t);


			if (isRightDevice(device)) { // 判斷是不是本身的想要的設備
				btAdapter.stopLeScan(this);
				// 進行請求的連接
				device.connectGatt(context, false, gattCallback);
				McLog.i("device %s is this account's.", t);
			} else {
				McLog.i("device %s is not this account's.", t);
			}
		}
	};


BluetoothManager bluetoothManager = (BluetoothManager) getSystemService(Context.BLUETOOTH_SERVICE);
btAdapter = bluetoothManager.getAdapter();
btAdapter.startLeScan(leScanCallback);

三、設置請求連接的回調

public class BleBluetoothGattCallback extends BluetoothGattCallback {
	
	public static final UUID SERVER_UUID = UUID.fromString("0000FFF0-0000-1000-8000-00805F9B34FB");
	
	OnBleReadCallback onBleReadCallback;

	public void onConnectionStateChange(BluetoothGatt gatt, int status, int newState) { // 連接狀態的改變的回調
		McLog.mByStackTrace();
		McLog.i("status = " + status);
		McLog.i("newState = " + newState);
		switch (newState) {
			case BluetoothProfile.STATE_CONNECTED:
				McLog.e("STATE_CONNECTED"); // 連接成功
				gatt.discoverServices();
				if (onBleReadCallback != null) {
					onBleReadCallback.onConnect();
				}
				break;
			case BluetoothProfile.STATE_DISCONNECTED:
				gatt.close();
				McLog.e("STATE_DISCONNECTED");// 斷開連接
				if (onBleReadCallback != null) {
					onBleReadCallback.onDisConnect();
				}
				break;
			case BluetoothProfile.STATE_CONNECTING:
				McLog.e("STATE_CONNECTING");
				break;
			case BluetoothProfile.STATE_DISCONNECTING:
				McLog.e("STATE_DISCONNECTING");
				break;
		}
	}

	public void onServicesDiscovered(final BluetoothGatt gatt, int status) { // <span style="font-family: Arial, Helvetica, sans-serif;">發現服務的回調</span>
		McLog.mByStackTrace(); 
		McLog.i("status = " + status);
		if (status == BluetoothGatt.GATT_SUCCESS) {
			BluetoothGattService service = gatt.getService(SERVER_UUID);
			McLog.i("service = " + service);
			if (service != null) {
				// 找到服務後，能夠進行讀取數據和寫入數據
			}
		} else {
			// McToastUtil.show("discover services fail.");
		}
	}

	public void onCharacteristicRead(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic, int status) {// 讀取特徵值的回調
		McLog.i("onCharacteristicRead");
		UUID currentUUId = characteristic.getUuid();
		McLog.i("currentUUId = " + currentUUId);
		if (currentUUId == null) {
			return;
		}
		// 數據的內容
		byte[] data = characteristic.getValue();
		McLog.i("data = " + Arrays.toString(data));
	}

	public void onCharacteristicWrite(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic, int status) {// 寫入特徵值回調
		McLog.i("onCharacteristicWrite status = " + status);
	}

	public void setOnBleReadCallback(OnBleReadCallback onBleReadCallback) {
		this.onBleReadCallback = onBleReadCallback;
	}

	public interface OnBleReadCallback { // 本身定義的回調

		void onConnect();

		void onReadData(byte[] data);

		void onReadComple();

		void onDisConnect();
	}
}

最後特別重要的是，必定好配合硬件工程師調試藍牙。