Android Bluetooth State

Bluetooth State

Bluetooth State:

The Android Bluetooth State is the status of the balance of the device’s Bluetooth activity at the time that the statistic was taken.

It shows whether the Bluetooth is on or off and depending on the API of the device, it may also give more info about the Bluetooth connection, such as discovery of Bluetooth devices in the vicinity or if connected with a particular device.

Example:

                                    
                                        <!-- AndroidManifest.xml -->
<uses-permission android:name="android.permission.BLUETOOTH"/>
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>

<!-- activity_main.xml -->
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity"
    android:padding="16dp">

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true">

        <TextView
            android:id="@+id/bluetoothStatus"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Bluetooth Status"
            android:textStyle="bold"
            android:textSize="20sp"
            android:textColor="#000000"
            android:gravity="center"
            android:layout_marginTop="20dp"
            android:layout_marginBottom="6dp"/>

        <Switch
            android:id="@+id/bluetooth_switch"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_below="@id/bluetoothStatus"
            android:layout_centerInParent="true"
            android:text="Switch ON/OFF"
            android:layout_marginTop="20dp"/>
    </RelativeLayout>

</RelativeLayout>

                                    
                                        import android.bluetooth.BluetoothAdapter;
import android.content.Intent;
import android.os.Bundle;
import android.widget.CompoundButton;
import android.widget.Switch;
import android.widget.TextView;
import androidx.appcompat.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity {

    TextView bluetoothStatus;
    Switch aSwitch;
    BluetoothAdapter bluetoothAdapter;
    final static int REQUEST_ENABLE_BLUETOOTH = 1;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        bluetoothStatus = findViewById(R.id.bluetoothStatus);
        aSwitch = findViewById(R.id.bluetooth_switch);

        bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
        aSwitch.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

                if (isChecked) {
                    Intent intent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
                    startActivityForResult(intent, REQUEST_ENABLE_BLUETOOTH);
                    bluetoothStatus.setText("Bluetooth is ON");

                } else {
                    bluetoothAdapter.disable();
                    bluetoothStatus.setText("Bluetooth is OFF");
                }
            }
        });
    }
}

                                      
                                        import android.bluetooth.BluetoothAdapter
import android.content.Intent
import android.os.Bundle
import android.widget.CompoundButton
import android.widget.Switch
import android.widget.TextView
import androidx.appcompat.app.AppCompatActivity

class MainActivity : AppCompatActivity() {

    private lateinit var bluetoothStatus: TextView
    private lateinit var aSwitch: Switch
    private lateinit var bluetoothAdapter: BluetoothAdapter

    companion object {
        private const val REQUEST_ENABLE_BLUETOOTH = 1
    }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        bluetoothStatus = findViewById(R.id.bluetoothStatus)
        aSwitch = findViewById(R.id.bluetooth_switch)

        bluetoothAdapter = BluetoothAdapter.getDefaultAdapter()
        aSwitch.setOnCheckedChangeListener { buttonView, isChecked ->
            if (isChecked) {
                val intent = Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE)
                startActivityForResult(intent, REQUEST_ENABLE_BLUETOOTH)
                bluetoothStatus.text = "Bluetooth is ON"
            } else {
                bluetoothAdapter.disable()
                bluetoothStatus.text = "Bluetooth is OFF"
            }
        }
    }
}