Android实现蓝牙远程连接遇到的问题

主要问到的问题:1.uuid获取不到，一直为空，后来发现android4.2之前使用uuid这种方法，目前尽量不使用uuid方式

2.socket.connect()出错，报read failed, socket might closed or timeout, read ret: -1；这个错，解觉方法就是另开一个子线程专门执行socket.connect()方法

源码：

package com.example.testopencv.client;

import android.bluetooth.BluetoothDevice;

import android.bluetooth.BluetoothSocket;

import android.content.Context;

import android.content.Intent;

import android.os.ParcelUuid;

import android.util.Log;

import java.io.IOException;

import java.lang.reflect.InvocationTargetException;

import java.lang.reflect.Method;

import java.util.Arrays;

import java.util.UUID;

public class ConnThread extends Thread {

    private BluetoothDevice device;

    private BluetoothSocket socket;

    private Context mContext;

    public ConnThread(BluetoothDevice device) {

        this.device = device;

        System.out.println(device.getBluetoothClass()+"这里要连接");

       // UUID uuid = device.getUuids()[0].getUuid();

        //System.out.println(uuid+"这是uuid");

        try {

            socket = device.createRfcommSocketToServiceRecord(UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"));

        } catch (IOException e) {

            e.printStackTrace();

        }

    }

    @Override

    public void run() {

        try {

            //java.io.IOException: Service discovery failed

            // 连接蓝牙服务端

            socket.connect();

            // 发送内容

            socket.getOutputStream().write(new String("Hello").getBytes());

        } catch (IOException e) {

            e.printStackTrace();

        } finally {

            try {

                socket.close();

            } catch (IOException e) {

                e.printStackTrace();

            }

        }

    }

}

效果：

参考文章：蓝牙通信的坑，read failed, socket might closed or timeout, read ret: -1_bobo丶仔_新浪博客 (sina.com.cn)

巴特西

Android实现蓝牙远程连接遇到的问题

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