Android编程9:蓝牙测试

转自http://blog.csdn.net/jdh99/article/details/6871070

Android编程9:蓝牙测试

本文博客链接:http://blog.csdn.net/jdh99,作者:jdh,转载请注明.

软件平台:win7 + 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

参考链接:

http://blog.csdn.net/pwei007/article/details/6015907

源代码:

main.xml:

[html] view
plaincopy

<?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:

[java] view
plaincopy

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<String> 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<String>(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 / 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<BluetoothDevice> pairedDevices = mBluetoothAdapter.getBondedDevices();

mArrayAdapter.clear();

// If there are paired devices

if (pairedDevices.size() > 0)

{

//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: