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package no.mork.android.defogger;
import android.app.Activity;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.le.BluetoothLeScanner;
import android.bluetooth.le.ScanCallback;
import android.bluetooth.le.ScanResult;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.widget.ListView;
import android.widget.Toast;
// lots of nice examples: https://www.programcreek.com/java-api-examples/index.php?api=android.bluetooth.le.ScanCallback
public class ScannerActivity extends Activity {
private static String msg = "Defogger Scanning: ";
// Stops scanning after 10 seconds.
private static final long SCAN_PERIOD = 10000;
private BluetoothAdapter bluetoothAdapter;
private boolean mScanning;
private Handler handler;
private ScanCallback leScanCallback;
private BluetoothLeScanner btScanner;
private ScanListAdapter scanlistAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_scanner);
ListView listView = (ListView) findViewById(R.id.scanlist_view);
scanlistAdapter = new ScanListAdapter(this, R.layout.scanitem, R.id.scanitem);
listView.setAdapter(scanlistAdapter);
scanlistAdapter.addDevice("foo");
bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
btScanner = bluetoothAdapter.getBluetoothLeScanner();
if (btScanner == null) {
Log.d(msg, "getBluetoothLeScanner() returned NULL");
}
leScanCallback = new ScanCallback() {
@Override
public void onScanResult(int callbackType, ScanResult result) {
Log.d(msg, "onScanResult()");
super.onScanResult(callbackType, result);
scanlistAdapter.addDevice(result.getDevice().getAddress());
}
};
CharSequence text = "Hello toast!";
Toast.makeText(getApplicationContext(), text, Toast.LENGTH_LONG).show();
Intent intent = new Intent();
intent.putExtra("scan_ret", "This data is returned when scan activity is finished.");
setResult(RESULT_OK, intent);
}
@Override
protected void onResume() {
super.onResume();
//scanForCamera(true);
//finish();
}
protected void scanForCamera(final boolean enable) {
mScanning = enable;
Log.d(msg, "entered scanForCamera()");
if (btScanner == null) {
return;
}
if (enable) {
// Stops scanning after a pre-defined scan period.
handler.postDelayed(new Runnable() {
@Override
public void run() {
mScanning = false;
btScanner.stopScan(leScanCallback);
}
}, SCAN_PERIOD);
Log.d(msg, "starting scan()");
btScanner.startScan(leScanCallback);
Log.d(msg, "scan started()");
} else {
btScanner.stopScan(leScanCallback);
}
}
}
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