Java tutorial
//package com.java2s; //License from project: Apache License import android.bluetooth.BluetoothAdapter; import android.bluetooth.BluetoothManager; import android.content.Context; import android.os.Build; public class Main { public static int getBluetoothState(Context context) { BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter(); if (adapter != null) return adapter.getState(); else { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) adapter = ((BluetoothManager) context.getSystemService(Context.BLUETOOTH_SERVICE)).getAdapter(); if (adapter != null) return adapter.getState(); else return BluetoothAdapter.STATE_OFF; } } }