android 蓝牙4.0广播功能应用

一、添加蓝牙权限

在AndroidManifest.xml文件中添加如下红色部分代码，添加蓝牙打开权限，以及LE接口调用权限。

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.administrator.myapplication">


    <uses-permission android:name="android.permission.BLUETOOTH"/>
    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>
    <uses-feature android:name="android.hardware.bluetooth_le" android:required="true"/>
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"

二、添加对应的包头以及调用接口，并添加button clock事件开启关闭广播功能。

package com.example.administrator.myapplication;

import android.bluetooth.BluetoothGatt;
import android.support.v7.app.AppCompatActivity;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothManager;
import android.bluetooth.le.BluetoothLeAdvertiser;
import android.bluetooth.le.AdvertiseSettings;
import android.bluetooth.le.AdvertiseData;
import android.bluetooth.le.AdvertiseCallback;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button enableBt = (Button)findViewById(R.id.button2);
        Button openAdv = (Button)findViewById(R.id.button);
  //获取蓝牙适配器对象
 final BluetoothAdapter BtAdapter = BluetoothAdapter.getDefaultAdapter();
//获取蓝牙LE广播对象
 final BluetoothLeAdvertiser BtAdv = BtAdapter.getBluetoothLeAdvertiser(); 
 //广播参数设置，此处设置为空
 final AdvertiseSettings AdvSetting = new AdvertiseSettings.Builder().build();
 //广播数据设置为空
 final AdvertiseData AdvData = new AdvertiseData.Builder().build(); 
 //设置广播回调函数
 final AdvertiseCallback AdvCBack = new AdvertiseCallback() { @Override public void onStartSuccess(AdvertiseSettings settingsInEffect) { super.onStartSuccess(settingsInEffect); Toast.makeText(getApplicationContext(),"start Advertise ok",Toast.LENGTH_SHORT).show(); } }; enableBt.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { if(BtAdapter.isEnabled() == false){
                    //启动蓝牙功能
                    BtAdapter.enable();                    Toast.makeText(getApplicationContext(),"enable bluetooth",Toast.LENGTH_SHORT).show();                }else{
                    //关闭蓝牙功能
                    BtAdapter.disable();                    Toast.makeText(getApplicationContext(),"disable bluetooth",Toast.LENGTH_SHORT).show();                }            }        });        openAdv.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                if(BtAdapter.isEnabled()) {
                    //启动蓝牙LE广播功能
                    BtAdv.startAdvertising(AdvSetting, AdvData, AdvCBack);                    Toast.makeText(getApplicationContext(),"start Advertise",Toast.LENGTH_SHORT).show();                }else{                    Toast.makeText(getApplicationContext(),"Bluetooth is not enable!",Toast.LENGTH_SHORT).show();                }            }        });    }}