1 /* 2 * Copyright (C) 2019 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.settings.network; 18 19 import android.bluetooth.BluetoothAdapter; 20 import android.content.BroadcastReceiver; 21 import android.content.Context; 22 import android.content.Intent; 23 import android.content.IntentFilter; 24 import android.net.ConnectivityManager; 25 import android.text.TextUtils; 26 27 import androidx.lifecycle.Lifecycle; 28 import androidx.lifecycle.OnLifecycleEvent; 29 30 import com.google.common.annotations.VisibleForTesting; 31 32 /** 33 * This controller helps to manage the switch state and visibility of bluetooth tether switch 34 * preference. 35 */ 36 public final class BluetoothTetherPreferenceController extends TetherBasePreferenceController { 37 private int mBluetoothState; 38 BluetoothTetherPreferenceController(Context context, String preferenceKey)39 public BluetoothTetherPreferenceController(Context context, String preferenceKey) { 40 super(context, preferenceKey); 41 } 42 43 @OnLifecycleEvent(Lifecycle.Event.ON_START) onStart()44 public void onStart() { 45 mBluetoothState = BluetoothAdapter.getDefaultAdapter().getState(); 46 mContext.registerReceiver(mBluetoothChangeReceiver, 47 new IntentFilter(BluetoothAdapter.ACTION_STATE_CHANGED)); 48 } 49 50 @OnLifecycleEvent(Lifecycle.Event.ON_STOP) onStop()51 public void onStop() { 52 mContext.unregisterReceiver(mBluetoothChangeReceiver); 53 } 54 55 @Override shouldEnable()56 public boolean shouldEnable() { 57 switch (mBluetoothState) { 58 case BluetoothAdapter.STATE_ON: 59 case BluetoothAdapter.STATE_OFF: 60 // fall through. 61 case BluetoothAdapter.ERROR: 62 return true; 63 case BluetoothAdapter.STATE_TURNING_OFF: 64 case BluetoothAdapter.STATE_TURNING_ON: 65 // fall through. 66 default: 67 return false; 68 } 69 } 70 71 @Override shouldShow()72 public boolean shouldShow() { 73 final String[] bluetoothRegexs = mTm.getTetherableBluetoothRegexs(); 74 return bluetoothRegexs != null && bluetoothRegexs.length != 0; 75 } 76 77 @Override getTetherType()78 public int getTetherType() { 79 return ConnectivityManager.TETHERING_BLUETOOTH; 80 } 81 82 @VisibleForTesting 83 final BroadcastReceiver mBluetoothChangeReceiver = new BroadcastReceiver() { 84 @Override 85 public void onReceive(Context context, Intent intent) { 86 if (TextUtils.equals(BluetoothAdapter.ACTION_STATE_CHANGED, intent.getAction())) { 87 mBluetoothState = 88 intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, BluetoothAdapter.ERROR); 89 updateState(mPreference); 90 } 91 } 92 }; 93 } 94