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      1 /*
      2  * Copyright (C) 2013 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.wifi;
     18 
     19 import com.android.settings.R;
     20 
     21 import android.app.Activity;
     22 import android.app.AlertDialog;
     23 import android.app.Dialog;
     24 import android.app.DialogFragment;
     25 import android.content.DialogInterface;
     26 import android.content.Intent;
     27 import android.net.wifi.WifiManager;
     28 import android.os.Bundle;
     29 import android.provider.Settings;
     30 import android.util.Log;
     31 
     32 /**
     33  * This activity requests users permission to allow scanning even when Wi-Fi is turned off
     34  */
     35 public class WifiScanModeActivity extends Activity {
     36     private DialogFragment mDialog;
     37     private String mApp;
     38 
     39     @Override
     40     protected void onCreate(Bundle savedInstanceState) {
     41         super.onCreate(savedInstanceState);
     42         Intent intent = getIntent();
     43         if (savedInstanceState == null) {
     44             if (intent != null && intent.getAction()
     45                     .equals(WifiManager.ACTION_REQUEST_SCAN_ALWAYS_AVAILABLE)) {
     46                 mApp = getCallingPackage();
     47             } else {
     48                 finish();
     49                 return;
     50             }
     51         } else {
     52             mApp = savedInstanceState.getString("app");
     53         }
     54         createDialog();
     55     }
     56 
     57     private void createDialog() {
     58         if (mDialog == null) {
     59             mDialog = AlertDialogFragment.newInstance(mApp);
     60             mDialog.show(getFragmentManager(), "dialog");
     61         }
     62     }
     63 
     64     private void dismissDialog() {
     65         if (mDialog != null) {
     66             mDialog.dismiss();
     67             mDialog = null;
     68         }
     69     }
     70 
     71     private void doPositiveClick() {
     72         Settings.Global.putInt(getContentResolver(),
     73                 Settings.Global.WIFI_SCAN_ALWAYS_AVAILABLE, 1);
     74         setResult(RESULT_OK);
     75         finish();
     76     }
     77 
     78     private void doNegativeClick() {
     79         setResult(RESULT_CANCELED);
     80         finish();
     81     }
     82 
     83     @Override
     84     public void onSaveInstanceState(Bundle outState) {
     85         super.onSaveInstanceState(outState);
     86         outState.putString("app", mApp);
     87     }
     88 
     89     @Override
     90     public void onPause() {
     91         super.onPause();
     92         dismissDialog();
     93     }
     94 
     95     public void onResume() {
     96         super.onResume();
     97         createDialog();
     98     }
     99 
    100     public static class AlertDialogFragment extends DialogFragment {
    101         static AlertDialogFragment newInstance(String app) {
    102             AlertDialogFragment frag = new AlertDialogFragment(app);
    103             return frag;
    104         }
    105 
    106         private final String mApp;
    107         public AlertDialogFragment(String app) {
    108             super();
    109             mApp = app;
    110         }
    111 
    112         public AlertDialogFragment() {
    113             super();
    114             mApp = null;
    115         }
    116 
    117         @Override
    118         public Dialog onCreateDialog(Bundle savedInstanceState) {
    119             return new AlertDialog.Builder(getActivity())
    120                     .setMessage(getString(R.string.wifi_scan_always_turnon_message, mApp))
    121                     .setPositiveButton(R.string.wifi_scan_always_confirm_allow,
    122                             new DialogInterface.OnClickListener() {
    123                                 public void onClick(DialogInterface dialog, int whichButton) {
    124                                     ((WifiScanModeActivity) getActivity()).doPositiveClick();
    125                                 }
    126                             }
    127                     )
    128                     .setNegativeButton(R.string.wifi_scan_always_confirm_deny,
    129                             new DialogInterface.OnClickListener() {
    130                                 public void onClick(DialogInterface dialog, int whichButton) {
    131                                     ((WifiScanModeActivity) getActivity()).doNegativeClick();
    132                                 }
    133                             }
    134                     )
    135                     .create();
    136         }
    137         @Override
    138         public void onCancel(DialogInterface dialog) {
    139             ((WifiScanModeActivity) getActivity()).doNegativeClick();
    140         }
    141     }
    142 }
    143