Android安卓蓝牙开发

第一次写博客，希望通过博客的方式可以帮助那些初学安卓开发的人，如果有不对的地方，也希望大神指教一二！

简单的蓝牙开发至需要两个类就可以了，一个是BlueToothAdapter（本机）,BluetoothDevice（扫描的外部蓝牙设备）.下面直接贴代码，加备注。

这是xml文件

<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" >

<Button

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/set"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="设置可见性" />

</LinearLayout>

下面是MainActivity.java

package com.example.bluetooth;

import java.util.Set;

import android.app.Activity;

import android.bluetooth.BluetoothAdapter;

import android.bluetooth.BluetoothDevice;

import android.content.BroadcastReceiver;

import android.content.Context;

import android.content.Intent;

import android.content.IntentFilter;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.Toast;

public class MainActivity extends Activity {

BluetoothAdapter adapter;

private Button scan;

private Button set;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

scan = (Button) this.findViewById(R.id.scan);//扫描蓝牙

set = (Button) this.findViewById(R.id.set); //设置可见性按钮

set.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View v) {

Intent intent = new Intent(

BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);

intent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION,

300);//设置可见性的持续时间。最长300秒

startActivity(intent);

}

});

adapter = BluetoothAdapter.getDefaultAdapter();

scan.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View v) {

adapter.startDiscovery();//开始扫描

}

});

//设置过滤器，只过滤蓝牙设备找到的情况

IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);

DiscoverReceiver receiver = new DiscoverReceiver(); //广播接收者

registerReceiver(receiver, filter);// 注册广播



}

private class DiscoverReceiver extends BroadcastReceiver {

@Override

public void onReceive(Context context, Intent intent) {

String action = intent.getAction();

if (BluetoothDevice.ACTION_FOUND.equals(action)) {

BluetoothDevice device = intent

.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);

System.out.println(device.getAddress());

}

}

}

}

需要添加的权限

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

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