Android——搜索传统蓝牙设备

一，主布局：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>

<ListView
android:layout_weight="5"
android:id="@+id/test_list_bluetooth"
android:layout_width="match_parent"
android:layout_height="match_parent">
</ListView>

<LinearLayout
android:layout_weight="0.2"
android:layout_width="match_parent"
android:layout_height="wrap_content">

<Button
android:layout_gravity="left"
android:layout_margin="10dp"
android:id="@+id/scan"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="扫描蓝牙设备" />

<Button
android:id="@+id/btn_scan_ble"
android:text="扫描BLE设备"
android:layout_gravity="right"
android:layout_margin="10dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>

<Button
android:id="@+id/btn_stopscan"
android:text="停止扫描"
android:layout_gravity="right"
android:layout_margin="10dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>

</LinearLayout>

</LinearLayout>

二，列表Item

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">

<TextView
android:layout_marginTop="20dp"
android:layout_marginLeft="20dp"
android:layout_marginBottom="20dp"
android:layout_weight="1"
android:hint="蓝牙名称"
android:id="@+id/test_bluetooth_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />

<TextView
android:layout_marginTop="20dp"
android:layout_marginLeft="20dp"
android:layout_marginBottom="20dp"
android:layout_weight="1"
android:hint="蓝牙地址"
android:id="@+id/test_bluetooth_addr"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />

<TextView
android:textColor="@color/txt_blue"
android:layout_marginTop="20dp"
android:layout_marginLeft="20dp"
android:layout_marginBottom="20dp"
android:layout_weight="1"
android:hint="绑定状态"
android:id="@+id/test_device_status"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />

</LinearLayout>

三，蓝牙权限配置

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

四，activity上代码

package com.woasis.batteries.activity;

import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothManager;
import android.bluetooth.BluetoothSocket;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.Toast;

import com.woasis.batteries.R;
import com.woasis.batteries.lib.bluttoth.BluetoothData;
import com.woasis.batteries.lib.bluttoth.BluetoothService;

import java.io.IOError;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.UUID;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

private ListView mListView;//列表对象
IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
List<Map<String,String>> deviceList;//列表数据源
SimpleAdapter listItemAdapter;
BluetoothAdapter bluetoothAdapter;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
findViewById(R.id.scan).setOnClickListener(this);
findViewById(R.id.btn_stopscan).setOnClickListener(this);
findViewById(R.id.btn_scan_ble).setOnClickListener(this);
mListView=(ListView)findViewById(R.id.test_list_bluetooth);
registerReceiver(mReceiver, filter);
// bluetoothService = BluetoothService.getInstance(this, BluetoothService.BluetoothType.b4);
// bluetoothService.setmBluetoothData(new BluetoothData("INVENT-7CEC7933","123"));
}

private Handler handler=new Handler(){
public void handleMessage(Message msg) {
switch (msg.what) {
case 0:/*停止扫描*/
listItemAdapter.notifyDataSetChanged();
Log.i("handler--0---收到消息：",deviceList.toString());
break;
case 1:/*更新listview数据源*/
Bundle b =msg.getData();
String deviceName=b.getString("deviceName");
String deviceAddress=b.getString("deviceAddress");
Map map=new HashMap();
map.put("deviceName",deviceName);
map.put("deviceAddress",deviceAddress);
map.put("bluetooth_status","未配对");
boolean isAdd=false;
for(Map m :deviceList){
if(m.get("deviceAddress")!=map.get("deviceAddress")){
isAdd=true;
}
}
if(isAdd) {
deviceList.add(map);
}
listItemAdapter.notifyDataSetChanged();
Log.i("handler--1---收到消息：",map.toString());
break;
default:
break;
}
}
};
BluetoothService bluetoothService;

@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.scan:
// bluetoothService.startBluetooth();
//1,初始化蓝牙适配器
final BluetoothManager bluetoothManager=(BluetoothManager) getSystemService(Context.BLUETOOTH_SERVICE);
bluetoothAdapter= bluetoothManager.getAdapter();
//2,开启蓝牙
if(bluetoothAdapter==null || !bluetoothAdapter.isEnabled()){
Intent enableBtIntent=new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBtIntent,1);
}
//3,扫描附近的设备
deviceList=new ArrayList<>();

if(bluetoothAdapter.isDiscovering()){
bluetoothAdapter.cancelDiscovery();
}else{
//每次扫描之前都先判断一下是否存在已久配对的设备
Set<BluetoothDevice> paireDevices=bluetoothAdapter.getBondedDevices();
if(paireDevices.size()>0){
for(BluetoothDevice device :paireDevices){
Map map=new HashMap();
map.put("deviceName",device.getName());
map.put("deviceAddress",device.getAddress());
map.put("bluetooth_status","已配对");

deviceList.add(map);

}
Log.i("之前已经绑定过的设备：",deviceList.toString());
}
bluetoothAdapter.startDiscovery();//开始搜索
}

/*数据绑定listView*/
if(deviceList!=null && deviceList.size()>0){
listItemAdapter=new SimpleAdapter(getBaseContext(),/*指明了SimpleAdapter关联的View的运行环境，也就是当前的Activity*/
deviceList,/*由Map组成的List,在List中的每条目对应ListView的一行，每一个Map中包含的就是所有在from参数中指定的key*/
R.layout.test_item_bluetooth_list,/*定义列表项的布局文件的资源ID，该资源文件至少应该包含在to参数中定义的ID*/
new String[]{"deviceName","deviceAddress","bluetooth_status"},/*将被添加到Map映射上的Key*/
new int[] {R.id.test_bluetooth_name,R.id.test_bluetooth_addr,R.id.test_device_status}/*将绑定数据的视图的Id跟from参数对应，这些被绑定的视图元素应该全是TextView*/
);
//设置适配器
mListView.setAdapter(listItemAdapter);
}

break;
case R.id.btn_stopscan:
Log.i("停止蓝牙扫描-------",String.valueOf(System.currentTimeMillis()));
bluetoothAdapter.cancelDiscovery();//停止扫描
break;
case R.id.btn_scan_ble:/*扫描BLE设备*/
break;
default:
break;
}
}

/*监听扫描过程中的变化*/
private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
// When discovery finds a device
if (BluetoothDevice.ACTION_FOUND.equals(action))
{
// Get the BluetoothDevice object from the Intent
// 通过EXTRA_DEVICE附加域来得到一个BluetoothDevice设备
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);

// If it's already paired, skip it, because it's been listed already
// 如果这个设备是不曾配对过的，添加到list列表
if (device.getBondState() != BluetoothDevice.BOND_BONDED)
{
Message msg=new Message();
msg.what=1;
Bundle bundle=new Bundle();
bundle.putString("deviceName",device.getName());
bundle.putString("deviceAddress",device.getAddress());
msg.setData(bundle);
handler.sendMessage(msg);

Map map=new HashMap();
map.put("deviceName",device.getName());
map.put("deviceAddress",device.getAddress());
Log.i("扫描到的新设备：",map.toString());
Log.i("加入新设备之后，扫描到的总设备：",deviceList.toString());
}
// When discovery is finished, change the Activity title
}
else if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(action))
{
Log.i("扫描结束------扫描到的总设备：",deviceList.toString());
handler.obtainMessage(0).sendToTarget();
}
}
};

}