ANDROID_MARS学习笔记_S03_001_获取蓝牙匹配列表

一、代码

1.xml
(1)AndroidManifest.xml

增加

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

2.java
(1)MainActivity.java

 package com.bluetooth1;

 import java.util.Iterator;
 import java.util.Set;

 import android.app.Activity;
 import android.bluetooth.BluetoothAdapter;
 import android.bluetooth.BluetoothDevice;
 import android.content.Intent;
 import android.os.Bundle;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.widget.Button;

 public class MainActivity extends Activity {

     private Button button = null;
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);

         button = (Button)findViewById(R.id.buttonId);
         button.setOnClickListener(new OnClickListener() {
             @Override
             public void onClick(View v) {
                 //获得BluetoothAdapter对象，该API是android 2.0开始支持的
                 BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
                 //adapter不等于null，说明本机有蓝牙设备
                 if(adapter != null) {
                     System.out.println("本机有蓝牙设备！");
                     //如果蓝牙设备未开启
                     if(!adapter.isEnabled()) {
                         Intent intent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
                         //请求开启蓝牙设备
                         startActivity(intent);
                     }
                     //获得已配对的远程蓝牙设备的集合
                     Set<BluetoothDevice> devices = adapter.getBondedDevices();
                     if(devices.size() > 0) {
                         for(Iterator<BluetoothDevice> it = devices.iterator() ; it.hasNext() ; ) {
                             //打印出远程蓝牙设备的物理地址
                             BluetoothDevice device = it.next();
                             System.out.println(device.getAddress());
                         }
                     } else {
                         System.out.println("还没有已配对的远程蓝牙设备！");
                     }
                 } else {
                     System.out.println("本机没有蓝牙设备！");
                 }
             }
         });
     }
 }