Android Ble4.0开发

最近在做一个蓝牙的项目，是Blu4.0，Android系统支持是4.3版本以上（为此特地卖了个手机，）。

当然也参考了不少大牛的的微博，说的都不错，再次特地感谢

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

调试Ble硬件的读写的App

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

这个App，可以在自己app为开发好的情况下，简单的测试下读写特征值，不知道为什么，好像只能写入一个值。也许是我不知道怎么写入多个值。

下面这个是从github上搜索的一个ble4.0的代码

https://github.com/StevenRudenko/BleSensorTag

网上有很多关于Ble4.0的开发，再次也不做介绍，反正都是差不多的。

1、声明蓝牙的权限

    <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" />

2、监听搜索的回调

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

	}

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

	public void onConnect() {
		showToast("连接设备成功");
		isConnect = true;
	}

	public void onDisConnect() {
		showToast("断开设备");
		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)) { // 判断是否是自己的想要的设备
				btAdapter.stopLeScan(this);
				// 进行请求的链接
				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);

3、设置请求链接的回调

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) { // 链接状态的改变的回调
		McLog.mByStackTrace();
		McLog.i("status = " + status);
		McLog.i("newState = " + newState);
		switch (newState) {
			case BluetoothProfile.STATE_CONNECTED:
				McLog.e("STATE_CONNECTED"); // 链接成功
				gatt.discoverServices();
				if (onBleReadCallback != null) {
					onBleReadCallback.onConnect();
				}
				break;
			case BluetoothProfile.STATE_DISCONNECTED:
				gatt.close();
				McLog.e("STATE_DISCONNECTED");// 断开链接
				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;">发现服务的回调</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) {
				// 找到服务后，可以进行读取数据和写入数据
			}
		} else {
			// McToastUtil.show("discover services fail.");
		}
	}

	public void onCharacteristicRead(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic, int status) {// 读取特征值的回调
		McLog.i("onCharacteristicRead");
		UUID currentUUId = characteristic.getUuid();
		McLog.i("currentUUId = " + currentUUId);
		if (currentUUId == null) {
			return;
		}
		// 数据的内容
		byte[] data = characteristic.getValue();
		McLog.i("data = " + Arrays.toString(data));
	}

	public void onCharacteristicWrite(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic, int status) {// 写入特征值回调
		McLog.i("onCharacteristicWrite status = " + status);
	}

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

	public interface OnBleReadCallback { // 自己定义的回调

		void onConnect();

		void onReadData(byte[] data);

		void onReadComple();

		void onDisConnect();
	}
}

最后特别重要的是，一定好配合硬件工程师调试蓝牙。