Request the user to enable bluetooth in case it's disabled. - Android Bluetooth

Android examples for Bluetooth:Bluetooth State

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Description

Request the user to enable bluetooth in case it's disabled.

Demo Code


import android.Manifest;
import android.app.Activity;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothManager;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.util.Log;

public class Main{
    private static final String TAG = BLEUtility.class.getSimpleName();
    /**//from   w ww  .ja  v  a 2 s.c o m
     * Request the user to enable bluetooth in case it's disabled.
     *
     * @param context {@link android.content.Context} of the requesting activity.
     */
    public static void requestEnableBluetooth(@NonNull final Context context) {
        if (isBLEEnabled(context)) {
            return;
        } else {
            final Intent enableBluetoothIntent = new Intent(
                    BluetoothAdapter.ACTION_REQUEST_ENABLE);
            context.startActivity(enableBluetoothIntent);
        }
    }
    /**
     * Checks if BLE connections are supported and if Bluetooth is enabled on the device.
     *
     * @return <code>true</code> if it's enabled - <code>false</code> otherwise.
     */
    public static boolean isBLEEnabled(@NonNull final Context context) {
        // Use this check to determine whether BLE is supported on the device.
        if (!context.getPackageManager().hasSystemFeature(
                PackageManager.FEATURE_BLUETOOTH_LE)) {
            Log.e(TAG, "Bluetooth LE is not supported on this device");
            return false;
        }

        final BluetoothManager bluetoothManager = (BluetoothManager) context
                .getSystemService(Context.BLUETOOTH_SERVICE);
        final BluetoothAdapter bluetoothAdapter = bluetoothManager
                .getAdapter();

        // Checks if Bluetooth is supported on the device.
        if (bluetoothAdapter == null) {
            Log.e(TAG, "Bluetooth is not supported on this device");
            return false;
        }

        return bluetoothAdapter.isEnabled();
    }
}

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