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:

<?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<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: