1 /*
2  * Copyright (C) 2011 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.nfc;
18 
19 import android.app.ActionBar;
20 import android.app.Fragment;
21 import android.content.Context;
22 import android.nfc.NfcAdapter;
23 import android.os.Bundle;
24 import android.os.UserManager;
25 import android.view.LayoutInflater;
26 import android.view.View;
27 import android.view.ViewGroup;
28 import android.widget.Switch;
29 
30 import com.android.settings.R;
31 import com.android.settings.SettingsActivity;
32 import com.android.settings.widget.SwitchBar;
33 
34 public class AndroidBeam extends Fragment
35         implements SwitchBar.OnSwitchChangeListener {
36     private View mView;
37     private NfcAdapter mNfcAdapter;
38     private SwitchBar mSwitchBar;
39     private CharSequence mOldActivityTitle;
40     private boolean mBeamDisallowed;
41 
42     @Override
onCreate(Bundle savedInstanceState)43     public void onCreate(Bundle savedInstanceState) {
44         super.onCreate(savedInstanceState);
45 
46         final ActionBar actionBar = getActivity().getActionBar();
47 
48         mOldActivityTitle = actionBar.getTitle();
49         actionBar.setTitle(R.string.android_beam_settings_title);
50 
51         mNfcAdapter = NfcAdapter.getDefaultAdapter(getActivity());
52         mBeamDisallowed = ((UserManager) getActivity().getSystemService(Context.USER_SERVICE))
53                 .hasUserRestriction(UserManager.DISALLOW_OUTGOING_BEAM);
54     }
55 
56     @Override
onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)57     public View onCreateView(LayoutInflater inflater, ViewGroup container,
58             Bundle savedInstanceState) {
59         mView = inflater.inflate(R.layout.android_beam, container, false);
60 
61         return mView;
62     }
63 
64     @Override
onActivityCreated(Bundle savedInstanceState)65     public void onActivityCreated(Bundle savedInstanceState) {
66         super.onActivityCreated(savedInstanceState);
67 
68         SettingsActivity activity = (SettingsActivity) getActivity();
69 
70         mSwitchBar = activity.getSwitchBar();
71         mSwitchBar.setChecked(!mBeamDisallowed && mNfcAdapter.isNdefPushEnabled());
72         mSwitchBar.addOnSwitchChangeListener(this);
73         mSwitchBar.setEnabled(!mBeamDisallowed);
74         mSwitchBar.show();
75     }
76 
77     @Override
onDestroyView()78     public void onDestroyView() {
79         super.onDestroyView();
80         if (mOldActivityTitle != null) {
81             getActivity().getActionBar().setTitle(mOldActivityTitle);
82         }
83         mSwitchBar.removeOnSwitchChangeListener(this);
84         mSwitchBar.hide();
85     }
86 
87     @Override
onSwitchChanged(Switch switchView, boolean desiredState)88     public void onSwitchChanged(Switch switchView, boolean desiredState) {
89         boolean success = false;
90         mSwitchBar.setEnabled(false);
91         if (desiredState) {
92             success = mNfcAdapter.enableNdefPush();
93         } else {
94             success = mNfcAdapter.disableNdefPush();
95         }
96         if (success) {
97             mSwitchBar.setChecked(desiredState);
98         }
99         mSwitchBar.setEnabled(true);
100     }
101 }
102