Android利用蓝牙广播数据

package coms.yl.mytest; import android.bluetooth.BluetoothAdapter; import android.bluetooth.BluetoothManager; import android.bluetooth.le.AdvertiseCallback; import android.bluetooth.le.AdvertiseData; import android.bluetooth.le.AdvertiseSettings; import android.bluetooth.le.BluetoothLeAdvertiser; import android.content.pm.PackageManager; import android.os.Bundle; import android.os.ParcelUuid; import android.support.v7.app.AppCompatActivity; import android.util.Log; import android.widget.Toast; public class MainActivity extends AppCompatActivity { private BluetoothAdapter mBluetoothAdapter; private static final String TAG = "MainActivity"; private static final String HEART_RATE_SERVICE = "0000180d-0000-1000-8000-00805f9b34fb"; private BluetoothLeAdvertiser mBluetoothLeAdvertiser; //回调 private AdvertiseCallback mAdvertiseCallback = new AdvertiseCallback() { @Override //成功 public void onStartSuccess(AdvertiseSettings settingsInEffect) { super.onStartSuccess(settingsInEffect); if (settingsInEffect != null) { Log.d(TAG, "onStartSuccess TxPowerLv=" + settingsInEffect.getTxPowerLevel() + " mode=" + settingsInEffect.getMode() + " timeout=" + settingsInEffect.getTimeout()); } else { Log.e(TAG, "onStartSuccess, settingInEffect is null"); } Log.e(TAG, "onStartSuccess settingsInEffect" + settingsInEffect); } //失败 @Override public void onStartFailure(int errorCode) { super.onStartFailure(errorCode); Log.e(TAG, "onStartFailure errorCode" + errorCode);//返回的错误码 if (errorCode == ADVERTISE_FAILED_DATA_TOO_LARGE) { Log.e(TAG, "数据大于31个字节"); } else if (errorCode == ADVERTISE_FAILED_TOO_MANY_ADVERTISERS) { Log.e(TAG, "未能开始广播，没有广播实例"); } else if (errorCode == ADVERTISE_FAILED_ALREADY_STARTED) { Log.e(TAG, "正在连接的，无法再次连接"); } else if (errorCode == ADVERTISE_FAILED_INTERNAL_ERROR) { Log.e(TAG, "由于内部错误操作失败"); } else if (errorCode == ADVERTISE_FAILED_FEATURE_UNSUPPORTED) { Log.e(TAG, "不支持此功能"); } } }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); init(); } //初始化数据 private void init() { if (!getPackageManager().hasSystemFeature(PackageManager.FEATURE_BLUETOOTH_LE)) { Toast.makeText(this, "不支持", Toast.LENGTH_LONG).show(); finish(); } final BluetoothManager mBluetoothManager = (BluetoothManager) getSystemService(BLUETOOTH_SERVICE); mBluetoothAdapter = mBluetoothManager.getAdapter(); if (mBluetoothAdapter == null) { Toast.makeText(this, "未配对蓝牙", Toast.LENGTH_LONG).show(); finish(); } mBluetoothLeAdvertiser = mBluetoothAdapter.getBluetoothLeAdvertiser();//判断你的设备到底支持不支持BLE Peripheral。假如此返回值非空，你才可以继续有机会开发 if (mBluetoothLeAdvertiser == null) { Toast.makeText(this, "不支持BLE Peripheral", Toast.LENGTH_SHORT).show(); Log.e(TAG, "不支持BLE Peripheral"); finish(); } //开启蓝牙广播 一个是广播设置参数，一个是广播数据，还有一个是Callback mBluetoothLeAdvertiser.startAdvertising(createAdvSettings(true, 0), createAdvertiseData(), mAdvertiseCallback); Log.e(TAG, "开启广播"); } /** * 初始化蓝牙类 * AdvertisingSettings.Builder 用于创建AdvertiseSettings * AdvertiseSettings中包含三种数据：AdvertiseMode, Advertise TxPowerLevel和AdvertiseType，其测试结果如下： * AdvertiseMode: * Advertise Mode Logcat频率 检测到的频率 * ADVERTISE_MODE_LOW_LATENCY 1/1600 milliseconds 1/1068 milliseconds * ADVERTISE_MODE_BALANCED 1/400 milliseconds 1/295 milliseconds * ADVERTISE_MODE_LOW_POWER 1/160 milliseconds 1/142 milliseconds */ public static AdvertiseSettings createAdvSettings(boolean connectable, int timeoutMillis) { //设置广播的模式,应该是跟功耗相关 AdvertiseSettings.Builder mSettingsbuilder = new AdvertiseSettings.Builder(); mSettingsbuilder.setAdvertiseMode(AdvertiseSettings.ADVERTISE_MODE_BALANCED); mSettingsbuilder.setConnectable(connectable); mSettingsbuilder.setTimeout(timeoutMillis); mSettingsbuilder.setTxPowerLevel(AdvertiseSettings.ADVERTISE_TX_POWER_HIGH); AdvertiseSettings mAdvertiseSettings = mSettingsbuilder.build(); if (mAdvertiseSettings == null) { Log.e(TAG, "mAdvertiseSettings == null"); } return mAdvertiseSettings; } //设置一下FMP广播数据 public static AdvertiseData createAdvertiseData() { AdvertiseData.Builder mDataBuilder = new AdvertiseData.Builder(); //添加的数据 mDataBuilder.addServiceData(ParcelUuid.fromString(HEART_RATE_SERVICE), "eeeeeeeeee".getBytes()); AdvertiseData mAdvertiseData = mDataBuilder.build(); if (mAdvertiseData == null) { Log.e(TAG, "mAdvertiseSettings == null"); } return mAdvertiseData; } //注销 @Override protected void onDestroy() { super.onDestroy(); Log.e(TAG, "停止广播"); //停止蓝牙广播 stopAdvertise(); } private void stopAdvertise() { if (mBluetoothLeAdvertiser != null) { mBluetoothLeAdvertiser.stopAdvertising(mAdvertiseCallback); mBluetoothLeAdvertiser = null; Log.e(TAG, "停止广播"); } } }