Bluetooth控件的使用

大家可以使用BlueSoleil这个软件模拟在台式机的蓝牙的功能

主要只用代码实现我们手机中的蓝牙的基本的功能：

（1）查看已经配对的蓝牙设备的情况

（2）启动蓝牙让其他蓝牙设备可以扫描的到

（3）扫描其他的蓝牙设备，并且显示

<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" >


    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/matched_bluetooth" />
    
    <Button 
        android:id="@+id/scanButton"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/scan_bluetooth"
       %3@ />
</LinearLayout>

package com.example.buletooth;


import java.util.Set;


import android.support.v7.app.ActionBarActivity;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;


/*
 * 这个Activity的主要的功能就是查看本地已经配对的蓝牙设备
 * 
 * */
public class BluetoothActivity extends ActionBarActivity {



private Button BluetoothButton;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_bluetooth);
BluetoothButton=(Button)findViewById(R.id.scanButton);
BluetoothButton.setOnClickListener(new BluetoothButtonListener());
}

class BluetoothButtonListener implements OnClickListener{


@Override
public void onClick(View view) {

//创建蓝牙Adapter
BluetoothAdapter adapter=BluetoothAdapter.getDefaultAdapter();
if(adapter!=null){
System.out.println("本地有可用的蓝牙设备");
//如果蓝牙设备不可用 就弹出Activity 询问用户是否打开设备
if(!adapter.enable()){
Intent intent=new Intent();
intent.setAction(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivity(intent);
}
//获取已经跟这个机器配对的设备
Set<BluetoothDevice> devices=adapter.getBondedDevices();
//循环遍历所有蓝牙设备的名字和mac地址
for(BluetoothDevice device:devices){
System.out.println(device.getName()+"  "+device.getAddress());
}

}else{
System.out.println("本地没有可用的蓝牙设备");
}
}


}


@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.bluetooth, menu);
return true;
}


@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(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"
    android:orientation="vertical" >
    


    <Button 
        android:id="@+id/discoveryenable"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/discoverty_bluetooth"
        />
    
    <Button 
        android:id="@+id/scanaround"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/scan_around_bluetooth"
        /> 
</LinearLayout>

package com.example.buletooth;


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;




/*
 * 这个Activity的主要的功能就是
 * （1）将本地的蓝牙设备设置为可见的状态，并且设置可见的时间
 * （2）扫描周围的蓝牙设备 并且利用广播接收周围的设备，并且显示
 * 
 * 
 * */
public class ScanAroundBluetooth extends Activity {



private Button  discoveryButton;
private Button  scanAroundButton;
private BluetoothAdapter  adapter;
private BluetoothReceiver receiver;


@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.scanaroundblurtooth);
discoveryButton=(Button)findViewById(R.id.discoveryenable);
scanAroundButton=(Button)findViewById(R.id.scanaround);
adapter=BluetoothAdapter.getDefaultAdapter();
IntentFilter intentFilter=new IntentFilter(BluetoothDevice.ACTION_FOUND);
receiver=new BluetoothReceiver();
registerReceiver(receiver, intentFilter);//注册接收广播的接收者
discoveryButton.setOnClickListener(new DiscoveryButtonListener());
scanAroundButton.setOnClickListener(new ScanAroundButtonListener());
}

class DiscoveryButtonListener implements OnClickListener{


@Override
public void onClick(View view) {
//创建INtent对象
Intent intent=new Intent();
//设置本地的蓝牙设备可以扫描
intent.setAction(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
//设置本地蓝牙被扫描的时间最多是300秒
intent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300);
//启动Activity
startActivity(intent);
}

}


class ScanAroundButtonListener implements OnClickListener{


@Override
public void onClick(View view) {
//扫描周围的蓝牙设备，如果扫描到，就会发送广播，我们需要接收广播
adapter.startDiscovery();
}

}


/*
* 这个是BluetoothDevice.ACTION_FOUND事件的广播接收器
* */
class BluetoothReceiver extends BroadcastReceiver{


@Override
public void onReceive(Context arg0, Intent intent) {
String action=intent.getAction();
if(action.equalsIgnoreCase(BluetoothDevice.ACTION_FOUND)){
//获取远程的设备
BluetoothDevice device=intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
System.out.println(device.getAddress()+"  "+device.getName());
}
}

}

@Override
protected void onDestroy() {
//撤销注册
unregisterReceiver(receiver);
super.onDestroy();
}



}