蓝牙

蓝牙

一、设置权限

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

二、布局

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity">

    <Button
        android:id="@+id/open_id"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="打开蓝牙" />

    <Button
        android:id="@+id/close_id"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="关闭蓝牙" />

    <Button
        android:id="@+id/getName_id"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="获取本机蓝牙名称" />

    <Button
        android:id="@+id/nearby_id"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="扫描附近蓝牙" />

    <Button
        android:id="@+id/show_id"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="展示已配对设备" />

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/mynearbyReceiver_id"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

    </androidx.recyclerview.widget.RecyclerView>

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/myshowReceiver_id"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

    </androidx.recyclerview.widget.RecyclerView>
</LinearLayout>

三、判断权限

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            requestPermissions(new String[]{
                    Manifest.permission.BLUETOOTH,
                    Manifest.permission.BLUETOOTH_ADMIN,
                    Manifest.permission.ACCESS_COARSE_LOCATION,
                    Manifest.permission.ACCESS_FINE_LOCATION
            }, 100);

        }

四、打开，关闭蓝牙

    //打开蓝牙
        openId.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent();
                //启动蓝牙
                intent.setAction(BluetoothAdapter.ACTION_REQUEST_ENABLE);
                intent.setAction(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
                startActivity(intent);
            }
        });
        //关闭蓝牙
        closeId.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //获得本机蓝牙适配器
                BluetoothAdapter defaultAdapter = BluetoothAdapter.getDefaultAdapter();
                //关闭本机蓝牙设备
                defaultAdapter.disable();
            }
        });

五、获取本机蓝牙名字

   //获取本机名字
        getNameId.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                BluetoothAdapter defaultAdapter = BluetoothAdapter.getDefaultAdapter();
                String name = defaultAdapter.getName();
                String address = defaultAdapter.getAddress();
                Toast.makeText(MainActivity.this, name + ":" + address, Toast.LENGTH_SHORT).show();
            }
        });

六、扫描附近蓝牙

		//注册内容提供者
		 myReceiver = new MyReceiver();
        IntentFilter intentFilter = new IntentFilter();
        intentFilter.addAction(BluetoothDevice.ACTION_FOUND);
        registerReceiver(myReceiver, intentFilter);
  		nearbyId.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                BluetoothAdapter defaultAdapter = BluetoothAdapter.getDefaultAdapter();
                //开始扫描
                defaultAdapter.startDiscovery();
            }
        });

内容提供者

class MyReceiver extends BroadcastReceiver {
        @Override
        public void onReceive(Context context, Intent intent) {
            if (intent.getAction().equals(BluetoothDevice.ACTION_FOUND)) {
                BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
                Log.i(TAG, "onReceive: " + device.getName() + ":" + device.getAddress());
                nearbyId_list.add(device);
                nearbyId_adapter.notifyDataSetChanged();
            }
        }
    }

七、显示配对蓝牙

  //显示已配对的蓝牙设备
        showId.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                BluetoothAdapter defaultAdapter = BluetoothAdapter.getDefaultAdapter();
                Set<BluetoothDevice> bondedDevices = defaultAdapter.getBondedDevices();
                for (BluetoothDevice bondedDevice : bondedDevices) {
                    Log.i(TAG, "onClick: " + "配对" + bondedDevice.getName() + ":" + bondedDevice.getAddress());
                }
                showId_list.addAll(bondedDevices);
                showId_adapter.notifyDataSetChanged();
            }

        });

监听接口

public interface MyListener {
    void onClick(int position, View view);
}

适配器

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyViewHolder> {
    private Context context;
    private List<BluetoothDevice> list;
    private MyListener myListener;

    public void setMyListener(MyListener myListener) {
        this.myListener = myListener;
    }

    public MyAdapter(Context context, List<BluetoothDevice> list) {
        this.context = context;
        this.list = list;
    }

    //连接布局
    @NonNull
    @Override
    public MyViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View inflate = LayoutInflater.from(context).inflate(R.layout.layout_item, null);
        return new MyViewHolder(inflate);
    }

    @Override
    public void onBindViewHolder(@NonNull MyViewHolder holder, final int position) {
        holder.textView_item.setText(list.get(position).getName() + ":" + list.get(position).getAddress());
        holder.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                myListener.onClick(position, v);
            }
        });
    }

    @Override
    public int getItemCount() {
        return list.size();
    }

    class MyViewHolder extends RecyclerView.ViewHolder {
        TextView textView_item;

        public MyViewHolder(@NonNull View itemView) {
            super(itemView);
            textView_item = itemView.findViewById(R.id.text_item);
        }
    }

}

Activity代码

  //附近蓝牙设备展示
        nearbyId_adapter = new MyAdapter(this, nearbyId_list);
        mynearbyReceiverId.setAdapter(nearbyId_adapter);
        mynearbyReceiverId.setLayoutManager(new LinearLayoutManager(this));
        mynearbyReceiverId.addItemDecoration(new DividerItemDecoration(this, DividerItemDecoration.VERTICAL));
        nearbyId_adapter.setMyListener(new MyListener() {
            @RequiresApi(api = Build.VERSION_CODES.KITKAT)
            @Override
            public void onClick(int position, View view) {
                Toast.makeText(MainActivity.this, "" + position, Toast.LENGTH_SHORT).show();
                //发起连接请求
                nearbyId_list.get(position).createBond();
            }
        });
        //展示已配对设备
        showId_adapter = new MyAdapter(this, showId_list);
        myshowReceiverId.setAdapter(showId_adapter);
        myshowReceiverId.setLayoutManager(new LinearLayoutManager(this));
        myshowReceiverId.addItemDecoration(new DividerItemDecoration(this, DividerItemDecoration.VERTICAL));
        showId_adapter.setMyListener(new MyListener() {
            @Override
            public void onClick(int position, View view) {
                Toast.makeText(MainActivity.this, "准备建立发送数据", Toast.LENGTH_SHORT).show();
            }
        });
    }

Activity整体代码

public class MainActivity extends AppCompatActivity {
    private static final String TAG = "MainActivity";
    private Button openId;
    private Button closeId;
    private Button getNameId;
    private Button nearbyId;
    private Button showId;
    private RecyclerView mynearbyReceiverId;
    private RecyclerView myshowReceiverId;
    private MyReceiver myReceiver;
    private List<BluetoothDevice> nearbyId_list = new ArrayList<>();
    private List<BluetoothDevice> showId_list = new ArrayList<>();
    private MyAdapter nearbyId_adapter;
    private MyAdapter showId_adapter;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        openId = (Button) findViewById(R.id.open_id);
        closeId = (Button) findViewById(R.id.close_id);
        getNameId = (Button) findViewById(R.id.getName_id);
        nearbyId = (Button) findViewById(R.id.nearby_id);
        showId = (Button) findViewById(R.id.show_id);
        mynearbyReceiverId = (RecyclerView) findViewById(R.id.mynearbyReceiver_id);
        myshowReceiverId = (RecyclerView) findViewById(R.id.myshowReceiver_id);
        myReceiver = new MyReceiver();
        IntentFilter intentFilter = new IntentFilter();
        intentFilter.addAction(BluetoothDevice.ACTION_FOUND);
        registerReceiver(myReceiver, intentFilter);

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            requestPermissions(new String[]{
                    Manifest.permission.BLUETOOTH,
                    Manifest.permission.BLUETOOTH_ADMIN,
                    Manifest.permission.ACCESS_COARSE_LOCATION,
                    Manifest.permission.ACCESS_FINE_LOCATION
            }, 100);

        }
        //打开蓝牙
        openId.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent();
                //启动蓝牙
                intent.setAction(BluetoothAdapter.ACTION_REQUEST_ENABLE);
                intent.setAction(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
                startActivity(intent);
            }
        });
        //关闭蓝牙
        closeId.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //获得本机蓝牙适配器
                BluetoothAdapter defaultAdapter = BluetoothAdapter.getDefaultAdapter();
                //关闭本机蓝牙设备
                defaultAdapter.disable();
            }
        });

        //获取本机名字
        getNameId.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                BluetoothAdapter defaultAdapter = BluetoothAdapter.getDefaultAdapter();
                String name = defaultAdapter.getName();
                String address = defaultAdapter.getAddress();
                Toast.makeText(MainActivity.this, name + ":" + address, Toast.LENGTH_SHORT).show();
            }
        });


        //扫描附近蓝牙
        nearbyId.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                BluetoothAdapter defaultAdapter = BluetoothAdapter.getDefaultAdapter();
                //开始扫描
                defaultAdapter.startDiscovery();
            }
        });

        //显示已配对的蓝牙设备
        showId.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                BluetoothAdapter defaultAdapter = BluetoothAdapter.getDefaultAdapter();
                Set<BluetoothDevice> bondedDevices = defaultAdapter.getBondedDevices();
                for (BluetoothDevice bondedDevice : bondedDevices) {
                    Log.i(TAG, "onClick: " + "配对" + bondedDevice.getName() + ":" + bondedDevice.getAddress());
                }
                showId_list.addAll(bondedDevices);
                showId_adapter.notifyDataSetChanged();
            }

        });
        //附近蓝牙设备展示
        nearbyId_adapter = new MyAdapter(this, nearbyId_list);
        mynearbyReceiverId.setAdapter(nearbyId_adapter);
        mynearbyReceiverId.setLayoutManager(new LinearLayoutManager(this));
        mynearbyReceiverId.addItemDecoration(new DividerItemDecoration(this, DividerItemDecoration.VERTICAL));
        nearbyId_adapter.setMyListener(new MyListener() {
            @RequiresApi(api = Build.VERSION_CODES.KITKAT)
            @Override
            public void onClick(int position, View view) {
                Toast.makeText(MainActivity.this, "" + position, Toast.LENGTH_SHORT).show();
                //发起连接请求
                nearbyId_list.get(position).createBond();
            }
        });
        //展示已配对设备
        showId_adapter = new MyAdapter(this, showId_list);
        myshowReceiverId.setAdapter(showId_adapter);
        myshowReceiverId.setLayoutManager(new LinearLayoutManager(this));
        myshowReceiverId.addItemDecoration(new DividerItemDecoration(this, DividerItemDecoration.VERTICAL));
        showId_adapter.setMyListener(new MyListener() {
            @Override
            public void onClick(int position, View view) {
                Toast.makeText(MainActivity.this, "准备建立发送数据", Toast.LENGTH_SHORT).show();
            }
        });
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        unregisterReceiver(myReceiver);
    }

    class MyReceiver extends BroadcastReceiver {
        @Override
        public void onReceive(Context context, Intent intent) {
            if (intent.getAction().equals(BluetoothDevice.ACTION_FOUND)) {
                BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
                Log.i(TAG, "onReceive: " + device.getName() + ":" + device.getAddress());
                nearbyId_list.add(device);
                nearbyId_adapter.notifyDataSetChanged();
            }
        }
    }
}

本文地址：https://blog.csdn.net/Sun_Sees_You/article/details/107475536