Question

我正在开发一项申请,该申请应当从蓝色扫描机开入一个 and器服务处(不要求用户使蓝色宇宙涂料完全没有活动),而我的器具没有或更确切地说,我的装置没有LCD/LED显示。在全面搜查和搜查之后,我可以部分地找到解决办法,并写下以下法典。

在这里,我开始从广播接收人那里获得服务,在我服务时,我开始穿蓝色,但蓝色衣似乎在转头,我尝试使蓝色人能够直接使用该守则。

BluetoothAdapter.getDefaultAdapter().enable()

审判

Intent btIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
btIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
serviceContext.startActivity(btIntent);

但是,在这两种情况下,蓝色体不会改变。

此处为:

android:versionCode="1"
android:versionName="1.0" android:permission="android.permission.RECEIVE_BOOT_COMPLETED" >

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="17" />
<uses-permission android:name="android.permission.BLUETOOTH"/>
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >

    <receiver android:name=".StartReceiver">
        <intent-filter>
            <action android:name="android.intent.action.BOOT_COMPLETED"/>
        </intent-filter>
    </receiver>

    <service android:name=".StartService"></service>
</application>

这里是广播接收器:

public class StartReceiver extends BroadcastReceiver{

@Override
public void onReceive(Context context, Intent intent) {
    Intent receiverIntent = new Intent(context, StartService.class);
    context.startService(receiverIntent);
    Log.i("Autostart", "started");
}
}

服务班:

public class StartService extends Service{

private static final String TAG = "BluetoothService";
BluetoothAdapter btAdapter;
BluetoothDevice device;

Context serviceContext;

@Override
public IBinder onBind(Intent arg0) {
    return null;
}

@Override
public void onStart(Intent intent, int startid){
    Toast.makeText(this, "Bluetooth Service Started", Toast.LENGTH_LONG).show();
    Log.d(TAG, "OnStart");

    BluetoothAdapter.getDefaultAdapter().enable();
    //Intent btIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
    //btIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    //serviceContext.startActivity(btIntent);

    registerReceiver(bcReceiver, new IntentFilter(BluetoothDevice.ACTION_FOUND));

        btAdapter.startDiscovery();

 }

@Override
public void onDestroy(){
    BluetoothAdapter.getDefaultAdapter().disable();
    unregisterReceiver(bcReceiver);
    btAdapter.cancelDiscovery();
}

private final BroadcastReceiver bcReceiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {

        String action = intent.getAction();
        if(BluetoothDevice.ACTION_FOUND.equals(action)){

            //Do Something
        }
    }
};
}

另外,服务班中使用的Toast电文没有显示。

我的法典中什么可能错了,因为不扶持和安放;扫描蓝to。

Answer 1

页: 1

@Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        // TODO Auto-generated method stub
        Toast.makeText(getApplicationContext(), "Bluetooth Service Started", Toast.LENGTH_LONG).show();

        Log.e("in onStartCommand", "onStartCommand");
        BluetoothAdapter.getDefaultAdapter().enable();
       //Intent btIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
       //btIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
       //serviceContext.startActivity(btIntent);

       registerReceiver(bcReceiver, new IntentFilter(BluetoothDevice.ACTION_FOUND));

       btAdapter.startDiscovery();

       return super.onStartCommand(intent, flags, startId);
    }

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