Android开发教程：蓝牙测试

软件平台:Windows 7 + Eclipse + SDK

设计思路:

配合倒计时定时器实现蓝牙打开,可见,扫描三个功能

源代码:

main.xml:

xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:Android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" android:orientation="vertical">
<TextView android:id="@+id/textView1" android:layout_width="wrap_content" android:text="TextView" android:layout_height="wrap_content">TextView>
<LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/linearLayout1">
<Button android:id="@+id/button1" android:text="OFF" android:layout_width="wrap_content" android:layout_height="wrap_content">Button>
LinearLayout>
<LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/linearLayout2">
<Button android:id="@+id/button2" android:text="开启可见 " android:layout_width="wrap_content" android:layout_height="wrap_content">Button>
<TextView android:id="@+id/textView2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="设备不可见 ">TextView>
LinearLayout>
<LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/linearLayout3">
<Button android:id="@+id/button3" android:text="扫描:OFF" android:layout_width="wrap_content" android:layout_height="wrap_content">Button>
<TextView android:id="@+id/textView3" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="停止扫描 ">TextView>
LinearLayout>
<ListView android:id="@+id/listView1" android:layout_height="wrap_content" android:layout_width="match_parent">ListView>
LinearLayout>

test_bluetooth.java:

package com.test_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.os.CountDownTimer;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;

public class test_bluetooth extends Activity implements View.OnClickListener
{
private static final int REQUEST_ENABLE_BT = 2;
TextView txt;
TextView txt_see;
TextView txt_scan;
BluetoothAdapter mBluetoothAdapter;
ArrayAdapter mArrayAdapter;
Button btn_switch;
Button btn_see;
Button btn_scan;
ListView list;
CountDownTimer see_timer;
CountDownTimer scan_timer;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

txt = (TextView)findViewById(R.id.textView1);
txt_see = (TextView)findViewById(R.id.textView2);
txt_scan = (TextView)findViewById(R.id.textView3);
//绑定XML中的ListView，作为Item的容器

list = (ListView) findViewById(R.id.listView1);

//获取蓝牙适配器

mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
mArrayAdapter = new ArrayAdapter(this,android.R.layout.simple_list_item_1);
if (mBluetoothAdapter == null)
{
// Device does not support Bluetooth

txt.setText("fail");
//退出程序

test_bluetooth.this.finish();
}

btn_switch = (Button)findViewById(R.id.button1);
btn_switch.setOnClickListener(this);
btn_see = (Button)findViewById(R.id.button2);
btn_see.setOnClickListener(this);
btn_see.setEnabled(false);
btn_scan = (Button)findViewById(R.id.button3);
btn_scan.setOnClickListener(this);
btn_scan.setText("扫描:OFF");
btn_scan.setEnabled(false);

//判断蓝牙是否已经被打开

if (mBluetoothAdapter.isEnabled())
{
//打开

btn_switch.setText("ON");
btn_see.setEnabled(true);
btn_scan.setEnabled(true);
}

see_timer = new CountDownTimer(120000,1000)
{
@Override
public void onTick( long millisUntilFinished)
{
txt_see.setText( "剩余可见时间" + millisUntilFinished / 1000 + "秒");
}
@Override
public void onFinish()
{
//判断蓝牙是否已经被打开

if (mBluetoothAdapter.isEnabled())
{
btn_see.setEnabled(true);
txt_see.setText( "设备不可见");
}
}
};
scan_timer = new CountDownTimer(12000,1000)
{
@Override
public void onTick( long millisUntilFinished)
{
txt_scan.setText( "剩余扫描时间" + millisUntilFinished /

加入1000 + "秒");

}
@Override

public void onFinish()

{
//判断蓝牙是否已经被打开

if (mBluetoothAdapter.isEnabled())

{
btn_scan.setEnabled(true);

//关闭扫描

mBluetoothAdapter.cancelDiscovery();

btn_scan.setText("扫描:OFF");

txt_scan.setText( "停止扫描");

}
}
};
}

@Override

protected void onDestroy() {

super.onDestroy();

android.os.Process.killProcess(android.os.Process.myPid());

}

@Override

public void onClick(View v)

{
// TODO Auto-generated method stub

switch (v.getId())

{
case R.id.button1:

{
String str = btn_switch.getText().toString();

if (str == "OFF")

{
if (!mBluetoothAdapter.isEnabled())

{
//打开蓝牙

Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);

startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT);

txt.setText("s1");

btn_see.setEnabled(true);

btn_scan.setText("扫描:OFF");

btn_scan.setEnabled(true);

}
}
else

{
//关闭蓝牙

mBluetoothAdapter.disable();
btn_switch.setText("OFF");

mArrayAdapter.clear();
list.setAdapter(mArrayAdapter);

btn_see.setEnabled(false);

btn_scan.setEnabled(false);

}

break;

}
case R.id.button2:

{
//开启可见

Intent enableBtIntent_See = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);

startActivityForResult(enableBtIntent_See, 3);

txt.setText("s1");

btn_see.setEnabled(false);

see_timer.start();

break;

}
case R.id.button3:

{
String str = btn_scan.getText().toString();

if (str == "扫描:OFF")

{
txt.setText("s5");

if (mBluetoothAdapter.isEnabled())

{
//开始扫描

mBluetoothAdapter.startDiscovery();
txt.setText("s6");

btn_scan.setText("扫描:ON");

// Create a BroadcastReceiver for ACTION_FOUND

final BroadcastReceiver mReceiver = new BroadcastReceiver()

{
@Override

public void onReceive(Context context, Intent intent)

{
// TODO Auto-generated method stub

String action = intent.getAction();

// When discovery finds a device

mArrayAdapter.clear();

if (BluetoothDevice.ACTION_FOUND.equals(action))

{
// Get the BluetoothDevice object from the Intent

BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);

// Add the name and address to an array adapter to show in a ListView

mArrayAdapter.add(device.getName() + ":" + device.getAddress());

}
list.setAdapter(mArrayAdapter);

}
};
// Register the BroadcastReceiver

IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);

registerReceiver(mReceiver, filter); // Don't forget to unregister during onDestroy

scan_timer.start();
}
}
else

{
//关闭扫描

mBluetoothAdapter.cancelDiscovery();
btn_scan.setText("扫描:OFF");

scan_timer.cancel();
txt_scan.setText( "停止扫描");

}

break;

}
default:

break;

}
}

public void onActivityResult(int requestCode, int resultCode, Intent data)

{
switch (requestCode)

{
case REQUEST_ENABLE_BT:

// When the request to enable Bluetooth returns

if (resultCode == Activity.RESULT_OK)

{
// Bluetooth is now enabled, so set up a chat session

btn_switch.setText("ON");

txt.setText("s4");

//获取蓝牙列表

Set pairedDevices = mBluetoothAdapter.getBondedDevices();

mArrayAdapter.clear();
// If there are paired devices

if (pairedDevices.size() > 0)

{

加入//txt.setText("s3");

// Loop through paired devices

for (BluetoothDevice device : pairedDevices)

{
// Add the name and address to an array adapter to show in a ListView

mArrayAdapter.add(device.getName() + ":" + device.getAddress());

}
list.setAdapter(mArrayAdapter);

}
} else

{
finish();
}
}
}
}

效果图: