The Bluetooth test example of Android programming _android

This example describes the Bluetooth test for Android programming. Share to everyone for your reference. The specific analysis is as follows:

First, software platform:

Win7 + eclipse + SDK

Second, design ideas:

With the countdown timer to achieve Bluetooth open, visible, scanning three functions

Third, the source code:

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=" open Visible "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=" Device not visible "></TextView> </LinearLayout> <linearlayout android:layout_width=" Match_parent "Android:layout_ height= "Wrap_content" android:id= "@+id/linearlayout3" > <button android:id= "@+id/button3" android:text= "Scan: O FF "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 = "Stop Scan" ></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 the activity is a. * * @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); 
  Bind the ListView in the XML as the container list = (ListView) Findviewbyid (r.id.listview1) of the item; 
  Get Bluetooth Adapter 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"); 
  Exit program 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 ("Scan: Off"); 
  Btn_scan.setenabled (FALSE); 
   Determine if Bluetooth has been opened if (mbluetoothadapter.isenabled ()) {//Open 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 ("remaining visible time" + millisuntilfinished/1000 + "seconds"); 
     @Override public void OnFinish () {//Determine if Bluetooth is already open if (mbluetoothadapter.isenabled ()) { 
     Btn_see.setenabled (TRUE); 
    Txt_see.settext ("Equipment not visible"); 
  } 
   } 
  }; 
    Scan_timer = new Countdowntimer (12000,1000) {@Override public void Ontick (long millisuntilfinished) { 
   Txt_scan.settext ("Remaining scan time" + millisuntilfinished/1000 + "seconds"); 
     @Override public void OnFinish () {//Determine if Bluetooth is already open if (mbluetoothadapter.isenabled ()) { 
     Btn_scan.setenabled (TRUE); Turn off scan Mbluetoothadapter.canceldisCovery (); 
     Btn_scan.settext ("Scan: Off"); 
    Txt_scan.settext ("Stop scanning"); 
 } 
   } 
  }; 
  } @Override protected void OnDestroy () {Super.ondestroy (); 
 Android.os.Process.killProcess (Android.os.Process.myPid ()); @Override public void OnClick (View v) {//TODO auto-generated a stub switch (V.getid ()) {case R 
    . Id.button1: {String str = Btn_switch.gettext (). toString (); if (str = "Off") {if (!mbluetoothadapter.isenabled ()) {//open bluetooth Intent enablebtintent = NE 
      W Intent (bluetoothadapter.action_request_enable); 
      Startactivityforresult (Enablebtintent, REQUEST_ENABLE_BT); 
      Txt.settext ("S1"); 
      Btn_see.setenabled (TRUE); 
      Btn_scan.settext ("Scan: Off"); 
     Btn_scan.setenabled (TRUE); 
     } else {//Turn off Bluetooth mbluetoothadapter.disable (); 
     Btn_switch.settext ("Off"); 
     Marrayadapter.clear (); 
     List.setadapter (Marrayadapter); Btn_see.setenabled (FALSE); 
    Btn_scan.setenabled (FALSE); 
   } break; Case R.id.button2: {//Open visible Intent enablebtintent_see = new Intent (bluetoothadapter.action_request_discove 
   rable); 
   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 = = "Scan: Off") {Txt.settext ("S5"); 
     if (mbluetoothadapter.isenabled ()) {//Start scanning mbluetoothadapter.startdiscovery (); 
     Txt.settext ("S6"); 
     Btn_scan.settext ("Scan: On"); 
      Create a broadcastreceiver for action_found final broadcastreceiver mreceiver = new Broadcastreceiver () { @Override public void OnReceive (context context, Intent Intent) {//TODO auto-generated Metho 
       D stub String action = Intent.getaction (); When Discovery finds a device marrayadapter.clear ();
       if (BluetoothDevice.ACTION_FOUND.equals (ACTION)) {//Get the Bluetoothdevice object from the Int 
        ENT bluetoothdevice device = Intent.getparcelableextra (Bluetoothdevice.extra_device); ADD the name and address to a ListView Marrayadapter.add (device.getname () + "adapter" + 
       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 {//close scan mbluetoothadapter.canceldiscovery (); 
    Btn_scan.settext ("Scan: Off"); 
    Scan_timer.cancel (); 
   Txt_scan.settext ("Stop scanning"); 
  } 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.resul 
    T_OK) {//Bluetooth is-enabled, so set up a chat session btn_switch.settext (' on '); 
    Txt.settext ("S4"); 
    Get bluetooth list 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 Addre 
     SS to the array adapter to show in a ListView Marrayadapter.add (device.getname () + ":" + device.getaddress ()); 
     } list.setadapter (Marrayadapter); 
   } else {finish (); } 
  } 
 } 
}

The effect chart is as follows:

I hope this article will help you with your Android program.