ANDROID_MARS学习笔记_S03_001_获取蓝牙匹配列表

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

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！");
}
}
});
}
}