Android蓝牙 - 从设备检测断开连接

Question

我正在尝试捕获蓝牙设备断开意图过滤器。我在Onceeive中添加了一个日志，但它永远不会达到它，也没有在logcat中显示。我怀疑问题是我的清单。xml配置：

清单：

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.company"
    android:versionCode="1"
    android:versionName="1.0" >
    <uses-sdk
        android:minSdkVersion="10"
        android:targetSdkVersion="16" />
    <uses-permission android:name="android.permission.BLUETOOTH" />
    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <receiver android:name="com.company.MyReceiver" android:enabled="true" android:exported="true">
            <intent-filter>
                <category android:name="android.intent.category.DEFAULT" />
                <action android:name="android.bluetooth.device.action.ACL_DISCONNECT_REQUESTED" />
                <action android:name="android.bluetooth.adapter.action.CONNECTION_STATE_CHANGED" />
                <action android:name="android.bluetooth.adapter.action.DISCOVERY_STARTED" />
            </intent-filter>
        </receiver>
        <activity
            android:name=".BTActivity"
            android:label="BTActivity" >
        </activity>
    </application>
</manifest>

myreceiver扩展了广播员：

@Override
    public void onReceive(Context context, Intent intent) {
        Log.i("got-in", "got-in-");
        // String action = intent.getAction();
        BluetoothDevice device = intent
                .getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
        Log.i("disconnect", device.getName());
        Intent i = new Intent(context, BTActivity.class);
        Bundle b = new Bundle();
        b.putString("deviceName", device.getName());
        intent.putExtras(b); // Put your id to your next Intent
        context.startActivity(i);
        // finish();
    }

Answer 1

使用此代码接收断开连接（蓝牙仍打开时）：

<intent-filter> <action android:name="android.bluetooth.device.action.ACL_CONNECTED" />
    <action android:name="android.bluetooth.device.action.ACL_DISCONNECT_REQUESTED" />
    <action android:name="android.bluetooth.device.action.ACL_DISCONNECTED" />
</intent-filter>

您还必须注册一项服务，然后注册一个广播接收器以进行蓝牙状态更改，因此您的应用知道何时关闭蓝牙，因此丢弃了所有活动设备，因为您将不会在何时仅转动蓝牙时收到ACL_Disconnect关闭。

@Override
    public int onStartCommand(Intent intent, int flags, int startId) {
    IntentFilter filter = new IntentFilter();
    filter.addAction(BluetoothAdapter.ACTION_STATE_CHANGED);
    registerReceiver(bluetoothTurnedOnOff, filter);
    return START_STICKY;
}
private final BroadcastReceiver bluetoothTurnedOnOff = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        if (intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, -1) == BluetoothAdapter.STATE_OFF) {
 [...]

Answer 2

适用于新用户。它将有效。您的清单文件外观

<receiver android:name="(package name).BluetoothReceiver" >
            <intent-filter>
                <action android:name="android.bluetooth.device.action.ACL_CONNECTED" />
                <action android:name="android.bluetooth.device.action.ACL_DISCONNECTED" />
            </intent-filter>
        </receiver>

，您的接收器看起来像

else if (intent.getAction().equals(`enter code here`
    BluetoothDevice.ACTION_ACL_DISCONNECTED)) {
    // connection lost

Answer 3

尝试从Intent-Filter中删除<category .../>，然后重试。

Answer 4

尝试android.bluetooth.device.action.acl_discontected在Intent Filter中的操作。它应该解决您的问题。