利用蓝牙广播数据
一个Activity搞定.
在自定义一个myAppliction继承系统的Appliction,我在onCreate()里进行自动开启蓝牙.
public class MyApplication extends Application {
@Override
public void onCreate() {
super.onCreate();
BluetoothAdapter blueadapter = BluetoothAdapter.getDefaultAdapter();
if(blueadapter!=null) { //Device support Bluetooth
//确认开启蓝牙
if (!blueadapter.isEnabled()) {
//直接开启，不经过提示
blueadapter.enable();
}
}
MainActivity 里面的代码.
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) {
Toast.makeText(Utils.getContext(), "广播开启错误,数据大于31个字节", Toast.LENGTH_LONG).show();
Log.e(TAG, "广播开启错误,数据大于31个字节");
} else if (errorCode == ADVERTISE_FAILED_TOO_MANY_ADVERTISERS) {
Toast.makeText(Utils.getContext(), "未能开始广播，没有广播实例", Toast.LENGTH_LONG).show();
Log.e(TAG, "未能开始广播，没有广播实例");
} else if (errorCode == ADVERTISE_FAILED_ALREADY_STARTED) {
Toast.makeText(Utils.getContext(), "正在连接的，无法再次连接", Toast.LENGTH_LONG).show();
Log.e(TAG, "正在连接的，无法再次连接");
} else if (errorCode == ADVERTISE_FAILED_INTERNAL_ERROR) {
Toast.makeText(Utils.getContext(), "由于内部错误操作失败", Toast.LENGTH_LONG).show();
Log.e(TAG, "由于内部错误操作失败");
} else if (errorCode == ADVERTISE_FAILED_FEATURE_UNSUPPORTED) {
Toast.makeText(Utils.getContext(), "在这个平台上不支持此功能", Toast.LENGTH_LONG).show();
Log.e(TAG, "在这个平台上不支持此功能");
}
}
};@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);
Toast.makeText(Utils.getContext(), "开启广播", Toast.LENGTH_LONG).show();
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) {
Toast.makeText(Utils.getContext(), "mAdvertiseSettings == null", Toast.LENGTH_LONG).show();
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();
// mDataBuilder.addServiceUuid(ParcelUuid.fromString(HEART_RATE_SERVICE));
//添加的数据
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;
}
//注销
@Override
protected void onDestroy() {
super.onDestroy();
Toast.makeText(Utils.getContext(), "停止广播", Toast.LENGTH_LONG).show();
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");
}}
//添加权限
demo下载地址 https://download.csdn.net/download/qq_36665856/10396723