利用藍芽廣播資料
阿新 • • 發佈：2018-11-12
一個Activity搞定.
在自定義一個myAppliction繼承系統的Appliction,我在onCreate()裡進行自動開啟藍芽.
public class MyApplication extends Application { @Override public void onCreate() { super.onCreate(); BluetoothAdapter blueadapter = BluetoothAdapter.getDefaultAdapter(); if(blueadapter!=null) { //Device support Bluetooth //確認開啟藍芽 if (!blueadapter.isEnabled()) { //直接開啟，不經過提示 blueadapter.enable(); } }
MainActivity 裡面的程式碼.
public class MainActivityextends AppCompatActivity{ private BluetoothAdapter mBluetoothAdapter; private static final String TAG = "bleperipheral"; private static final String HEART_RATE_SERVICE = "0000180d-0000-1000-8000-00805f9b34fb"; private BluetoothLeAdvertiser mBluetoothLeAdvertiser; //回撥 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); } //失敗 @Override public void onStartFailure(int errorCode) { super.onStartFailure(errorCode); Log.e(TAG, "onStartFailure errorCode" + errorCode);//返回的錯誤碼 if (errorCode == ADVERTISE_FAILED_DATA_TOO_LARGE) { Toast.makeText(Utils.getContext(), "廣播開啟錯誤,資料大於31個位元組", Toast.LENGTH_LONG).show(); Log.e(TAG, "廣播開啟錯誤,資料大於31個位元組"); } else if (errorCode == ADVERTISE_FAILED_TOO_MANY_ADVERTISERS) { Toast.makeText(Utils.getContext(), "未能開始廣播，沒有廣播例項", Toast.LENGTH_LONG).show(); Log.e(TAG, "未能開始廣播，沒有廣播例項"); } else if (errorCode == ADVERTISE_FAILED_ALREADY_STARTED) { Toast.makeText(Utils.getContext(), "正在連線的，無法再次連線", Toast.LENGTH_LONG).show(); Log.e(TAG, "正在連線的，無法再次連線"); } else if (errorCode == ADVERTISE_FAILED_INTERNAL_ERROR) { Toast.makeText(Utils.getContext(), "由於內部錯誤操作失敗", Toast.LENGTH_LONG).show(); Log.e(TAG, "由於內部錯誤操作失敗"); } else if (errorCode == ADVERTISE_FAILED_FEATURE_UNSUPPORTED) { Toast.makeText(Utils.getContext(), "在這個平臺上不支援此功能", Toast.LENGTH_LONG).show(); Log.e(TAG, "在這個平臺上不支援此功能"); } } };@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); init(); } //初始化資料 private void init() { if (!getPackageManager().hasSystemFeature(PackageManager.FEATURE_BLUETOOTH_LE)) { Toast.makeText(this, "不支援", Toast.LENGTH_LONG).show(); finish(); } final BluetoothManager mBluetoothManager = (BluetoothManager) getSystemService(BLUETOOTH_SERVICE); mBluetoothAdapter = mBluetoothManager.getAdapter(); if (mBluetoothAdapter == null) { Toast.makeText(this, "未配對藍芽", Toast.LENGTH_LONG).show(); finish(); } mBluetoothLeAdvertiser = mBluetoothAdapter.getBluetoothLeAdvertiser();//判斷你的裝置到底支援不支援BLE Peripheral。假如此返回值非空，你才可以繼續有機會開發 if (mBluetoothLeAdvertiser == null) { Toast.makeText(this, "不支援BLE Peripheral", Toast.LENGTH_SHORT).show(); Log.e(TAG, "不支援BLE Peripheral"); finish(); } //開啟藍芽廣播 一個是廣播設定引數，一個是廣播資料，還有一個是Callback mBluetoothLeAdvertiser.startAdvertising(createAdvSettings(true, 0), createAdvertiseData(), mAdvertiseCallback); Toast.makeText(Utils.getContext(), "開啟廣播", Toast.LENGTH_LONG).show(); Log.e(TAG, "開啟廣播"); } /** * 初始化藍芽類 * AdvertisingSettings.Builder 用於建立AdvertiseSettings * AdvertiseSettings中包含三種資料：AdvertiseMode, Advertise TxPowerLevel和AdvertiseType，其測試結果如下： * AdvertiseMode: * Advertise Mode Logcat頻率 檢測到的頻率 * 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) { //設定廣播的模式,應該是跟功耗相關 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) { Toast.makeText(Utils.getContext(), "mAdvertiseSettings == null", Toast.LENGTH_LONG).show(); Log.e(TAG, "mAdvertiseSettings == null"); } return mAdvertiseSettings; } //設定一下FMP廣播資料 public static AdvertiseData createAdvertiseData() { AdvertiseData.Builder mDataBuilder = new AdvertiseData.Builder(); // mDataBuilder.addServiceUuid(ParcelUuid.fromString(HEART_RATE_SERVICE)); //新增的資料 mDataBuilder.addServiceData(ParcelUuid.fromString(HEART_RATE_SERVICE), "eeeeeeeeee".getBytes()); AdvertiseData mAdvertiseData = mDataBuilder.build(); if (mAdvertiseData == null) { Toast.makeText(Utils.getContext(), "mAdvertiseSettings == null", Toast.LENGTH_LONG).show(); Log.e(TAG, "mAdvertiseSettings == null"); } return mAdvertiseData; } //登出 @Override protected void onDestroy() { super.onDestroy(); Toast.makeText(Utils.getContext(), "停止廣播", Toast.LENGTH_LONG).show(); Log.e(TAG, "停止廣播"); //停止藍芽廣播 stopAdvertise(); } private void stopAdvertise() { if (mBluetoothLeAdvertiser != null) { mBluetoothLeAdvertiser.stopAdvertising(mAdvertiseCallback); mBluetoothLeAdvertiser = null; Log.e(TAG, "停止廣播"); }} //新增許可權 <uses-permission android:name="android.permission.BLUETOOTH" /> <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" /> //收工
demo下載地址 https://download.csdn.net/download/qq_36665856/10396723