i am trying to autoconnect to bluetooth and return back from bluetooth settings to main activity ?can any one help me? - android-bluetooth

Question

hello i am trying to autoconnect to bluetooth and return back to main activity,but i am not able to auto connect and return back from current activity to main activty....
Of course if there are more easy ways to do it I would appreciate it very much.
here is code==>
public class SimpleUiActivity extends Activity {
private static final String TAG = SimpleUiActivity.class.getSimpleName();
private static final int RESULT_OK = 1;
private static final int RQS_IMAGE = 2;
private static final int RQS_I = 3;
private BluetoothAdapter BA;
private Map<String, Gpio> mGpioMap = new LinkedHashMap<>();
Button ble;
Button campre;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main1);
LinearLayout gpioPinsView = (LinearLayout) findViewById(R.id.gpio_pins);
LayoutInflater inflater = getLayoutInflater();
PeripheralManagerService pioService = new PeripheralManagerService();
for (String name : pioService.getGpioList()) {
View child = inflater.inflate(R.layout.list_item_gpio, gpioPinsView, false);
Switch button = (Switch) child.findViewById(R.id.gpio_switch);
button.setText(name);
gpioPinsView.addView(button);
Log.d(TAG, "Added button for GPIO: " + name);
try {
final Gpio ledPin = pioService.openGpio(name);
ledPin.setEdgeTriggerType(Gpio.EDGE_NONE);
ledPin.setActiveType(Gpio.ACTIVE_HIGH);
ledPin.setDirection(Gpio.DIRECTION_OUT_INITIALLY_LOW);
button.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
#Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
try {
ledPin.setValue(isChecked);
} catch (IOException e) {
Log.e(TAG, "error toggling gpio:", e);
buttonView.setOnCheckedChangeListener(null);
// reset button to previous state.
buttonView.setChecked(!isChecked);
buttonView.setOnCheckedChangeListener(this);
}
}
});
mGpioMap.put(name, ledPin);
} catch (IOException e) {
Log.e(TAG, "Error initializing GPIO: " + name, e);
// disable button
button.setEnabled(false);
}
//-----------------
ble=(Button)findViewById(R.id.autobluetooth);
ble.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View arg0) {
ble.postDelayed(new Runnable() {
#Override
public void run() {
BA = BluetoothAdapter.getDefaultAdapter();
BA.enable();
Intent intent=new Intent(android.provider.Settings.ACTION_BLUETOOTH_SETTINGS);
Log.i("aaa","i am here");
// startActivityForResult(intent, RQS_IMAGE);// Activity is started with requestCode 2
finish();
}
}, 10000);
}
});
//-----------------
//-----------------
campre=(Button)findViewById(R.id.camerapreview);
campre.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View arg0) {
Intent intent1=new Intent(SimpleUiActivity.this,MainActivity.class);
startActivityForResult(intent1, RQS_I);// Activity is started with requestCode 3
}
});
//----------------
}
}
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
super.onActivityResult(requestCode, resultCode, data);
// check if the request code is same as what is passed here it is 2
if(requestCode==RESULT_OK) {
switch (requestCode) {
case RQS_IMAGE:
Log.i("abc", "i am here");
Toast.makeText(getApplicationContext(), "Bluetooth switched ON", Toast.LENGTH_LONG).show();
finish();
// textsource.setText(source.toString());
break;
case RQS_I:
break;
}
}
}
#Override
protected void onDestroy() {
super.onDestroy();
for (Map.Entry<String, Gpio> entry : mGpioMap.entrySet()) {
try {
entry.getValue().close();
} catch (IOException e) {
Log.e(TAG, "Error closing GPIO " + entry.getKey(), e);
}
}
mGpioMap.clear();
}
}