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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.content.pm.ApplicationInfo;
     28 import android.content.pm.PackageManager;
     29 import android.net.wifi.WifiManager;
     30 import android.os.Bundle;
     31 import android.provider.Settings;
     32 import android.util.Log;
     33 
     34 /**
     35  * This activity requests users permission to allow scanning even when Wi-Fi is turned off
     36  */
     37 public class WifiScanModeActivity extends Activity {
     38     private DialogFragment mDialog;
     39     private String mApp;
     40 
     41     @Override
     42     protected void onCreate(Bundle savedInstanceState) {
     43         super.onCreate(savedInstanceState);
     44         Intent intent = getIntent();
     45         if (savedInstanceState == null) {
     46             if (intent != null && intent.getAction()
     47                     .equals(WifiManager.ACTION_REQUEST_SCAN_ALWAYS_AVAILABLE)) {
     48                 ApplicationInfo ai;
     49                 mApp = getCallingPackage();
     50                 try {
     51                     PackageManager pm = getPackageManager();
     52                     ai = pm.getApplicationInfo(mApp, 0);
     53                     mApp = (String)pm.getApplicationLabel(ai);
     54                 } catch (PackageManager.NameNotFoundException e) { }
     55             } else {
     56                 finish();
     57                 return;
     58             }
     59         } else {
     60             mApp = savedInstanceState.getString("app");
     61         }
     62         createDialog();
     63     }
     64 
     65     private void createDialog() {
     66         if (mDialog == null) {
     67             mDialog = AlertDialogFragment.newInstance(mApp);
     68             mDialog.show(getFragmentManager(), "dialog");
     69         }
     70     }
     71 
     72     private void dismissDialog() {
     73         if (mDialog != null) {
     74             mDialog.dismiss();
     75             mDialog = null;
     76         }
     77     }
     78 
     79     private void doPositiveClick() {
     80         Settings.Global.putInt(getContentResolver(),
     81                 Settings.Global.WIFI_SCAN_ALWAYS_AVAILABLE, 1);
     82         setResult(RESULT_OK);
     83         finish();
     84     }
     85 
     86     private void doNegativeClick() {
     87         setResult(RESULT_CANCELED);
     88         finish();
     89     }
     90 
     91     @Override
     92     public void onSaveInstanceState(Bundle outState) {
     93         super.onSaveInstanceState(outState);
     94         outState.putString("app", mApp);
     95     }
     96 
     97     @Override
     98     public void onPause() {
     99         super.onPause();
    100         dismissDialog();
    101     }
    102 
    103     public void onResume() {
    104         super.onResume();
    105         createDialog();
    106     }
    107 
    108     public static class AlertDialogFragment extends DialogFragment {
    109         static AlertDialogFragment newInstance(String app) {
    110             AlertDialogFragment frag = new AlertDialogFragment(app);
    111             return frag;
    112         }
    113 
    114         private final String mApp;
    115         public AlertDialogFragment(String app) {
    116             super();
    117             mApp = app;
    118         }
    119 
    120         public AlertDialogFragment() {
    121             super();
    122             mApp = null;
    123         }
    124 
    125         @Override
    126         public Dialog onCreateDialog(Bundle savedInstanceState) {
    127             return new AlertDialog.Builder(getActivity())
    128                     .setMessage(getString(R.string.wifi_scan_always_turnon_message, mApp))
    129                     .setPositiveButton(R.string.wifi_scan_always_confirm_allow,
    130                             new DialogInterface.OnClickListener() {
    131                                 public void onClick(DialogInterface dialog, int whichButton) {
    132                                     ((WifiScanModeActivity) getActivity()).doPositiveClick();
    133                                 }
    134                             }
    135                     )
    136                     .setNegativeButton(R.string.wifi_scan_always_confirm_deny,
    137                             new DialogInterface.OnClickListener() {
    138                                 public void onClick(DialogInterface dialog, int whichButton) {
    139                                     ((WifiScanModeActivity) getActivity()).doNegativeClick();
    140                                 }
    141                             }
    142                     )
    143                     .create();
    144         }
    145         @Override
    146         public void onCancel(DialogInterface dialog) {
    147             ((WifiScanModeActivity) getActivity()).doNegativeClick();
    148         }
    149     }
    150 }
    151