title: ActivityManager: Warning: Activity not started, its current task has been brought to the front
body: <pre><code>package supa.mack.doppler;
  
  import java.util.Set;
  
  import android.app.Activity;
  import android.content.Intent;
  import android.os.Bundle;
  import android.view.View;
  import android.widget.Button;
  import android.widget.TextView;
  import android.bluetooth.*; 
  import android.widget.Toast;
  
  public class doppler_test extends Activity {
  TextView out;
  
  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);
  
  out = (TextView) findViewById(R.id.out);
  
  // Getting the Bluetooth adapter
  BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
  out.append("\nAdapter: " + adapter);
  
  // Check for Bluetooth support in the first place 
  // Emulator doesn't support Bluetooth and will return null
  if(adapter==null) { 
  out.append("\nBluetooth NOT supported. Aborting.");
  return;
  }
  
  // Starting the device discovery
  out.append("\nStarting discovery...");
  adapter.startDiscovery();
  out.append("\nDone with discovery...");
  
  // Listing paired devices
  out.append("\nDevices Pared:");
  Set&lt;BluetoothDevice&gt; devices = adapter.getBondedDevices();
  for (BluetoothDevice device : devices) {
  out.append("\nFound device: " + device);
  }
  
  Button searchButton=(Button) findViewById(R.id.search_button);
  searchButton.setOnClickListener(new View.OnClickListener(){
  public void onClick(View v) {
  Intent intent=new Intent(
  doppler_test.this,
  search_result.class
  );
  
  startActivity(intent);
  }
  }); 
  }
  } 
  </code></pre>
  
  <p>--------------------------------------…</p>
  
  <p>Here is the code where the problem lies....</p>
  
  <p>It doesn't give me an error it says exactly this when I run the android emulator</p>
  
  <pre><code>"[2010-08-25 09:12:42 - doppler_test] ActivityManager: Warning: Activity not started, its current task has been brought to the front"
  </code></pre>
  
  <p>What I think this means is that the intent of the bluetooth function and the button intent is only operation on a hierarchy system. What I mean by this is that if I were to move the button opperator above the Bluetooth stuff the button will work, but currently when the app is run Bluetooth works but when I press the search button nothing happens.</p>
  
  <p>What else may be helpful is my XML code for the button so here it is......</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;LinearLayout 
  xmlns:android="http://schemas.android.co…
  android:orientation="vertical"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent"
  android:gravity="center_horizontal"
  android:background="@color/purple_flurp"…
  &lt;TextView 
  android:layout_width="wrap_content" 
  android:layout_height="wrap_content" 
  android:text="@string/hello"/&gt;
  &lt;Button
  android:id="@+id/search_button"
  android:layout_height="wrap_content" 
  android:text="@string/search" 
  android:layout_width="fill_parent"/&gt;
  
  &lt;TextView 
  android:text="@+id/TextView01" 
  android:id="@+id/out" 
  android:layout_width="wrap_content" 
  android:layout_height="wrap_content"&gt;
  &lt;/TextView&gt;
  &lt;/LinearLayout&gt;
  </code></pre>
  
  <p>--------------------------------------…</p>
  
  <p>any ideas?
  Anything would be great!
  Thanks</p>