蓝牙简单使用

蓝牙

简单的蓝牙功能打开蓝牙 关闭蓝牙 搜索蓝牙
清单文件需要加权限


BluetoothManager 蓝牙管理类，管理BluetoothAdapter。主要负责管理蓝牙的本地连接。
BluetoothAdapter 蓝牙适配器类：代表本蓝牙设备
BluetoothDevice 蓝牙设备，配对后的远程蓝牙设备

package com.example.day10bluetool;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothManager;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.ListView;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

    private ListView listView;
    private MainAdpter mainAdpter;
    private List<BlueToothBean> list = new ArrayList<>();

    private BluetoothManager bluetoothManager;
    private BluetoothAdapter bluetoothAdapter;
    private BluetoothReceiver bluetoothReceiver;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        initview();
        initDate();
    }

    private void initview() {
        listView=findViewById(R.id.lv);
        findViewById(R.id.btn_start).setOnClickListener(this);
        findViewById(R.id.btn_top).setOnClickListener(this);
        findViewById(R.id.btn_search).setOnClickListener(this);
        mainAdpter = new MainAdpter();
        listView.setAdapter(mainAdpter);
    }

    private void initDate() {

        bluetoothManager = (BluetoothManager) getSystemService(BLUETOOTH_SERVICE);
        bluetoothAdapter = bluetoothManager.getAdapter();
        if (bluetoothAdapter == null) {
            finish();
            return;
        }
        bluetoothReceiver = new BluetoothReceiver();
        IntentFilter intentFilter = new IntentFilter();
        intentFilter.addAction(BluetoothDevice.ACTION_FOUND);//可发现
        intentFilter.addAction(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);//搜索结果
        intentFilter.addAction(BluetoothDevice.ACTION_BOND_STATE_CHANGED);//绑定状态
        registerReceiver(bluetoothReceiver, intentFilter);
    }

    @Override
    public void onClick(View v) {

        switch (v.getId()) {
            case R.id.btn_start:
                boolean flag=bluetoothAdapter.enable();
                if(!flag){
                    Intent intent=new Intent();
                    intent.setAction(BluetoothAdapter.ACTION_REQUEST_ENABLE);//启动蓝牙
                    intent.setAction(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);//开启设备可被发现
                    intent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION,200);//指定搜索时间
                    startActivityForResult(intent,100);
                }
                break;
            case R.id.btn_top:
                list.clear();
                mainAdpter.refresh(list);
                bluetoothAdapter.disable();//关闭蓝牙


                break;
            case R.id.btn_search:
                bluetoothAdapter.startDiscovery();//开启搜素
                break;
            default:
                break;

        }
    }

 @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        if(requestCode==100&&requestCode==RESULT_OK){

            Toast.makeText(this, "蓝牙已开启", Toast.LENGTH_SHORT).show();
        }
    }

    private class BluetoothReceiver extends BroadcastReceiver {

        @Override
        public void onReceive(Context context, Intent intent) {

            String action = intent.getAction();
            switch (action) {
                case BluetoothDevice.ACTION_FOUND:
                    //搜索到一台蓝牙设备，进入一次Found
                    //搜索到的设备保存到list中
                    BluetoothDevice bluetoothDevice =
                            intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);

                    BlueToothBean blueToothBean = new BlueToothBean();
                    blueToothBean.name = bluetoothDevice.getName();
                    blueToothBean.address = bluetoothDevice.getAddress();
                    blueToothBean.bluetoothDevice = bluetoothDevice;
                    list.add(blueToothBean);
                    //TODO adapter刷新的方法
                    mainAdpter.refresh(list);
                    break;

                case BluetoothAdapter.ACTION_DISCOVERY_FINISHED:
                    //TODO adapter刷新的方法
                    mainAdpter.refresh(list);
                    break;
                default:
                    break;

            }
        }
    }

import android.bluetooth.BluetoothDevice;
public class BlueToothBean {

    public String name;
    public String address;
    public BluetoothDevice bluetoothDevice;
}

package com.example.day10bluetool;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;

import java.util.ArrayList;
import java.util.List;

class MainAdpter extends BaseAdapter {
    private List<BlueToothBean> list = new ArrayList<>();



    public void refresh(List<BlueToothBean> list) {
        this.list.addAll(list);
        notifyDataSetChanged();
    }

    @Override
    public int getCount() {
        if (list.size() != 0) {
            return list.size();
        }
        return 0;

    }

    @Override
    public Object getItem(int position) {
        return list.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder viewHolder;
        if (convertView == null) {
            viewHolder = new ViewHolder();
            LayoutInflater layoutInflater = LayoutInflater.from(parent.getContext());
            convertView = layoutInflater.inflate(R.layout.list_item, parent, false);

            viewHolder.address = convertView.findViewById(R.id.address);
            viewHolder.name = convertView.findViewById(R.id.name);
            convertView.setTag(viewHolder);
        } else {
            viewHolder = (ViewHolder) convertView.getTag();
            viewHolder.address.setText(list.get(position).address);
            viewHolder.name.setText(list.get(position).name);
        }

        return convertView;
    }

    static class ViewHolder {
        private TextView name;
        private TextView address;
    }

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;

import java.util.ArrayList;
import java.util.List;

class MainAdpter extends BaseAdapter {
    private List<BlueToothBean> list = new ArrayList<>();



    public void refresh(List<BlueToothBean> list) {
        this.list.addAll(list);
        notifyDataSetChanged();
    }

    @Override
    public int getCount() {
        if (list.size() != 0) {
            return list.size();
        }
        return 0;

    }

    @Override
    public Object getItem(int position) {
        return list.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder viewHolder;
        if (convertView == null) {
            viewHolder = new ViewHolder();
            LayoutInflater layoutInflater = LayoutInflater.from(parent.getContext());
            convertView = layoutInflater.inflate(R.layout.list_item, parent, false);

            viewHolder.address = convertView.findViewById(R.id.address);
            viewHolder.name = convertView.findViewById(R.id.name);
            convertView.setTag(viewHolder);
        } else {
            viewHolder = (ViewHolder) convertView.getTag();
            viewHolder.address.setText(list.get(position).address);
            viewHolder.name.setText(list.get(position).name);
        }

        return convertView;
    }

    static class ViewHolder {
        private TextView name;
        private TextView address;
    }
    }