Android蓝牙Ble通讯Demo示例源码–扫描,连接,发送和接收数据,分包解包

package com.crazy.bluetooth.ble; import android.app.Activity; import android.bluetooth.BluetoothDevice; import android.bluetooth.BluetoothGatt; import android.bluetooth.BluetoothGattCallback; import android.bluetooth.BluetoothGattCharacteristic; import android.bluetooth.BluetoothGattDescriptor; import android.bluetooth.BluetoothGattService; import android.bluetooth.BluetoothProfile; import android.os.Bundle; import android.support.v7.widget.LinearLayoutManager; import android.support.v7.widget.RecyclerView; import android.util.Base64; import android.util.Log; import android.view.View; import android.widget.EditText; import android.widget.TextView; import com.crazy.bluetooth.BaseApplication; import com.crazy.bluetooth.R; import com.crazy.bluetooth.util.CRC8; import com.crazy.bluetooth.util.IntByteStringHexUtil; import java.lang.reflect.Method; import java.util.Arrays; import java.util.LinkedList; import java.util.Queue; import java.util.UUID; /** * BLE客户端 */ public class BleClientActivity extends Activity { private static final String TAG = BleClientActivity.class.getSimpleName(); private EditText mWriteET; private TextView mTips; private BleDevAdapter mBleDevAdapter; private BluetoothGatt mBluetoothGatt; private boolean isConnected = false; private static final int bleSize = 20; private static Queue<String> queue = new LinkedList<String>(); // 与服务端连接的Callback public BluetoothGattCallback mBluetoothGattCallback = new BluetoothGattCallback() { @Override public void onConnectionStateChange(BluetoothGatt gatt, int status, int newState) { BluetoothDevice dev = gatt.getDevice(); Log.i(TAG, String.format("onConnectionStateChange:%s,%s,%s,%s", dev.getName(), dev.getAddress(), status, newState)); if (status == BluetoothGatt.GATT_SUCCESS && newState == BluetoothProfile.STATE_CONNECTED) { isConnected = true; gatt.discoverServices(); //启动服务发现 } else { isConnected = false; closeConn(); } logTv(String.format(status == 0 ? (newState == 2 ? "与[%s]连接成功" : "与[%s]连接断开") : ("与[%s]连接出错,错误码:" + status), dev)); } @Override public void onServicesDiscovered(BluetoothGatt gatt, int status) { Log.i(TAG, String.format("onServicesDiscovered:%s,%s,%s", gatt.getDevice().getName(), gatt.getDevice().getAddress(), status)); if (status == BluetoothGatt.GATT_SUCCESS) { //BLE服务发现成功 // 遍历获取BLE服务Services/Characteristics/Descriptors的全部UUID for (BluetoothGattService service : gatt.getServices()) { StringBuilder allUUIDs = new StringBuilder("UUIDs={\nS=" + service.getUuid().toString()); for (BluetoothGattCharacteristic characteristic : service.getCharacteristics()) { allUUIDs.append(",\nC=").append(characteristic.getUuid()); for (BluetoothGattDescriptor descriptor : characteristic.getDescriptors()) allUUIDs.append(",\nD=").append(descriptor.getUuid()); } allUUIDs.append("}"); Log.i(TAG, "onServicesDiscovered:" + allUUIDs.toString()); logTv("发现服务" + allUUIDs); } } } @Override public void onCharacteristicRead(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic, int status) { UUID uuid = characteristic.getUuid(); String valueStr = new String(characteristic.getValue()); Log.e(TAG, String.format("onCharacteristicRead:%s,%s,%s,%s,%s", gatt.getDevice().getName(), gatt.getDevice().getAddress(), uuid, valueStr, status)); logTv("读取Characteristic[" + uuid + "]:\n" + valueStr); } @Override public void onCharacteristicWrite(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic, int status) { UUID uuid = characteristic.getUuid(); String valueStr = new String(characteristic.getValue()); Log.e(TAG, String.format("onCharacteristicWrite:%s,%s,%s,%s,%s", gatt.getDevice().getName(), gatt.getDevice().getAddress(), uuid, valueStr, status)); logTv("写入Characteristic[" + uuid + "]:\n" + valueStr); if(queue.size()>0){ bleNotifyDevice(Base64.decode(queue.poll(), Base64.NO_WRAP)); } } @Override public void onCharacteristicChanged(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic) { UUID uuid = characteristic.getUuid(); String valueStr = new String(characteristic.getValue()); Log.e(TAG, String.format("onCharacteristicChanged:%s,%s,%s,%s", gatt.getDevice().getName(), gatt.getDevice().getAddress(), uuid, valueStr)); logTv("通知Characteristic[" + uuid + "]:\n" + valueStr); } @Override public void onDescriptorRead(BluetoothGatt gatt, BluetoothGattDescriptor descriptor, int status) { UUID uuid = descriptor.getUuid(); String valueStr = Arrays.toString(descriptor.getValue()); Log.i(TAG, String.format("onDescriptorRead:%s,%s,%s,%s,%s", gatt.getDevice().getName(), gatt.getDevice().getAddress(), uuid, valueStr, status)); logTv("读取Descriptor[" + uuid + "]:\n" + valueStr); } @Override public void onDescriptorWrite(BluetoothGatt gatt, BluetoothGattDescriptor descriptor, int status) { UUID uuid = descriptor.getUuid(); String valueStr = Arrays.toString(descriptor.getValue()); Log.e(TAG, String.format("onDescriptorWrite:%s,%s,%s,%s,%s", gatt.getDevice().getName(), gatt.getDevice().getAddress(), uuid, valueStr, status)); logTv("写入Descriptor[" + uuid + "]:\n" + valueStr); } }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_bleclient); RecyclerView rv = findViewById(R.id.rv_ble); mWriteET = findViewById(R.id.et_write); mTips = findViewById(R.id.tv_tips); rv.setLayoutManager(new LinearLayoutManager(this)); mBleDevAdapter = new BleDevAdapter(new BleDevAdapter.Listener() { @Override public void onItemClick(BluetoothDevice dev) { closeConn(); mBluetoothGatt = dev.connectGatt(BleClientActivity.this, false, mBluetoothGattCallback,BluetoothDevice.TRANSPORT_LE); //autoConnect 这意味着 是否直接连接到远程设备（false）或在远程设备可用时立即自动连接（true） //以下方案还是无效 //mBluetoothGatt = dev.connectGatt(BleClientActivity.this, true, mBluetoothGattCallback,TRANSPORT_LE); // 连接蓝牙设备 //bluetoothDevice.connectGatt(MainActivity.this, true, gattCallback);总是连接失败，提示status返回133，用了各种方法都不行， // 后台一查才发现6.0及以上系统的手机要使用bluetoothDevice.connectGatt(MainActivity.this,true, gattCallback, TRANSPORT_LE)， // 其中TRANSPORT_LE参数是设置传输层模式。传输层模式有三种TRANSPORT_AUTO 、TRANSPORT_BREDR 和TRANSPORT_LE。 // 如果不传默认TRANSPORT_AUTO，6.0系统及以上需要使用TRANSPORT_LE这种传输模式， // 具体为啥，我也不知道，我猜是因为Android6.0及以上系统重新定义了蓝牙BLE的传输模式必须使用TRANSPORT_LE这种方式吧。 //发起蓝牙Gatt连接 BluetoothDevice.connectGatt(Context context, boolean autoConnect, //BluetoothGattCallback callbac