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copied!<p>I think your code is ok, but you need to implement <code>startDiscovery()</code> in order to see results.</p> <p>The true is that <code>BluetoothDevice.EXTRA_RSSI</code> only works for discovering devices, when you connect to one of them you are not able any more to get its RSSI.</p> <p>Here I developed a very simple sample of an Activity that permit you see the RSSI of the devices near to you. You first need to add a TextView and a Button to your layout, then enable the Bluetooth Adapter and then just click the button. </p> <pre><code>package com.in2apps.rssi; import android.os.Bundle; import android.app.Activity; import android.bluetooth.BluetoothAdapter; import android.bluetooth.BluetoothDevice; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.view.Menu; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.TextView; public class RSSIActivity extends Activity { private BluetoothAdapter BTAdapter = BluetoothAdapter.getDefaultAdapter(); @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_rssi); registerReceiver(receiver, new IntentFilter(BluetoothDevice.ACTION_FOUND)); Button boton = (Button) findViewById(R.id.button1); boton.setOnClickListener(new OnClickListener(){ public void onClick(View v) { BTAdapter.startDiscovery(); } }); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.activity_rssi, menu); return true; } private final BroadcastReceiver receiver = new BroadcastReceiver(){ @Override public void onReceive(Context context, Intent intent) { String action = intent.getAction(); if(BluetoothDevice.ACTION_FOUND.equals(action)) { int rssi = intent.getShortExtra(BluetoothDevice.EXTRA_RSSI,Short.MIN_VALUE); String name = intent.getStringExtra(BluetoothDevice.EXTRA_NAME); TextView rssi_msg = (TextView) findViewById(R.id.textView1); rssi_msg.setText(rssi_msg.getText() + name + " => " + rssi + "dBm\n"); } } }; } </code></pre> <p>It looks this way:</p> <p><img src="https://i.stack.imgur.com/lSmfm.png" alt="RSSI Detection - Android Example"></p>

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