順序方法中的Android藍牙發現？

我是Android編程新手。我想創建一個包含藍牙發現功能的庫（JAR文件）。
由於它是一個庫，其內部的方法應該是一個順序方法（啓動藍牙發現，等待一段時間，並返回結果）。
我在下面做了一個代碼，但它不起作用。在LogCat中，我可以看到意圖，但BroadcastReceiver無法捕捉到意圖。
代碼有問題嗎？

順序方法中的Android藍牙發現？

public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 

    // Get local Bluetooth adapter 
    mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter(); 

    mSendButton = (Button) findViewById(R.id.button1); 
    mSendButton.setOnClickListener(new OnClickListener() { 
     public void onClick(View v) { 
      doDiscovery(); 
     } 
    }); 
} 

private final BroadcastReceiver mReceiver = new BroadcastReceiver() { 
    @Override 
    public void onReceive(Context context, Intent intent) { 
     String action = intent.getAction(); 

     if (BluetoothDevice.ACTION_FOUND.equals(action)) { 
      // Get the BluetoothDevice object from the Intent 
      BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); 
      Log.e("device_name", device.getName()); 
      Log.e("device_add", device.getAddress()); 
      numberOfDevice++; 
      Found_Device = true; 
     } else if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(action)) { 
      if(numberOfDevice == 0){ 
       Log.e("DISCOVERY", "No Device found"); 
      } 
      Log.e("DISCOVERY", "Number of device :" + numberOfDevice); 
      Discovery_Finish = true; 
     } 
    } 
}; 

public void doDiscovery(){ 
    IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND); 
    filter = new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_FINISHED); 
    registerReceiver(mReceiver, filter); 

    Discovery_Finish = false; 
    Found_Device = false; 
    long counter = 0; 

    if (mBluetoothAdapter.isDiscovering()) { 
     mBluetoothAdapter.cancelDiscovery(); 
    } 
    mBluetoothAdapter.startDiscovery(); 
    while((Found_Device == false) || (Discovery_Finish == false)){ 
     counter++; 
     if (counter >= 1000000){ 
      break; 
     } 
    } 
    // Add a code to check the number of device 

    unregisterReceiver(mReceiver); 
    mBluetoothAdapter.cancelDiscovery(); 
}

有沒有什麼辦法來檢查的意圖，而無需使用廣播接收器？
謝謝你的幫助。

來源

2012-01-09 sevare sertere

我認爲你錯過了開始發現其他設備。

來源

2012-07-25 15:25:22 Sulby

您將要覆蓋的IntentFilter當你這樣做：

IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND); 
filter = new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);

你應該做的是這樣的：

IntentFilter filter = new IntentFilter(); 
filter.addAction(BluetoothAdapter.ACTION_DISCOVERY_FINISHED); 
filter.addAction(BluetoothDevice.ACTION_FOUND);

來源

2016-04-26 22:57:30 Daniel

順序方法中的Android藍牙發現？

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