Develop a program for providing bluetooth connectivity.

activity_main.xml




<RelativeLayout xmlns:androclass="http://schemas.android.com/apk/res/android"

xmlns:tools="http://schemas.android.com/tools"

android:layout_width="match_parent"

android:layout_height="match_parent"

tools:context=".MainActivity" >

<TextView android:text=""

android:id="@+id/out"

android:layout_width="wrap_content"

android:layout_height="wrap_content">

</TextView>

<Button

android:id="@+id/button1"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignParentLeft="true"

android:layout_alignParentTop="true"

android:layout_marginLeft="30dp"

android:layout_marginTop="49dp"

android:text="TURN_ON" />

<Button

android:id="@+id/button2"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignLeft="@+id/button1"

android:layout_below="@+id/button1"

android:layout_marginTop="27dp"

android:text="DISCOVERABLE" />

<Button

android:id="@+id/button3"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignLeft="@+id/button2"

android:layout_below="@+id/button2"

android:layout_marginTop="28dp"

android:text="TURN_OFF" />

</RelativeLayout>

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:androclass="http://schemas.android.com/apk/res/android"

package="com.example.bluetooth"

android:versionCode="1"

android:versionName="1.0" >

<uses-sdk

android:minSdkVersion="8"

android:targetSdkVersion="16" />

<uses-permission android:name="android.permission.BLUETOOTH" />

<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />

<application

android:allowBackup="true"

android:icon="@drawable/ic_launcher"

android:label="@string/app_name"

android:theme="@style/AppTheme" >

<activity

android:name="com.example.bluetooth.MainActivity"

android:label="@string/app_name" >

<intent-filter>

<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />

</intent-filter>

</activity>

</application>

</manifest>

MainActivity.java

package com.example.bluetooth;

import android.os.Bundle;

import android.app.Activity;

import android.view.Menu;

import android.app.Activity;

import android.bluetooth.BluetoothAdapter;

import android.content.Context;

import android.content.Intent;

import android.os.Bundle;

import android.util.Log;

import android.view.View;

import android.widget.Button;

import android.widget.TextView;

import android.widget.Toast;

public class MainActivity extends Activity {

private static final int REQUEST_ENABLE_BT = 0;

private static final int REQUEST_DISCOVERABLE_BT = 0;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

final TextView out=(TextView)findViewById(R.id.out);

final Button button1 = (Button) findViewById(R.id.button1);

final Button button2 = (Button) findViewById(R.id.button2);

final Button button3 = (Button) findViewById(R.id.button3);

final BluetoothAdapter mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();

if (mBluetoothAdapter == null) {

out.append("device not supported");

}

button1.setOnClickListener(new View.OnClickListener() {

public void onClick(View v) {

if (!mBluetoothAdapter.isEnabled()) {

Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);

startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT);

}

}

});

button2.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View arg0) {

if (!mBluetoothAdapter.isDiscovering()) {

//out.append("MAKING YOUR DEVICE DISCOVERABLE");

Toast.makeText(getApplicationContext(), "MAKING YOUR DEVICE DISCOVERA

BLE",

Toast.LENGTH_LONG);

Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVER

ABLE);

startActivityForResult(enableBtIntent, REQUEST_DISCOVERABLE_BT);

}

}

});

button3.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View arg0) {

mBluetoothAdapter.disable();

//out.append("TURN_OFF BLUETOOTH");

Toast.makeText(getApplicationContext(), "TURNING_OFF BLUETOOTH", Toast.LENGT

H_LONG);

}

});

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

// Inflate the menu; this adds items to the action bar if it is present.

getMenuInflater().inflate(R.menu.activity_main, menu);

return true;

}

}