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      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.content.Context;
     21 import android.nfc.NfcAdapter;
     22 import android.os.Bundle;
     23 import android.os.UserManager;
     24 import android.view.LayoutInflater;
     25 import android.view.Menu;
     26 import android.view.MenuInflater;
     27 import android.view.View;
     28 import android.view.ViewGroup;
     29 import android.widget.Switch;
     30 
     31 import com.android.internal.logging.MetricsLogger;
     32 import com.android.settings.HelpUtils;
     33 import com.android.settings.InstrumentedFragment;
     34 import com.android.settings.R;
     35 import com.android.settings.SettingsActivity;
     36 import com.android.settings.widget.SwitchBar;
     37 
     38 public class AndroidBeam extends InstrumentedFragment
     39         implements SwitchBar.OnSwitchChangeListener {
     40     private View mView;
     41     private NfcAdapter mNfcAdapter;
     42     private SwitchBar mSwitchBar;
     43     private CharSequence mOldActivityTitle;
     44     private boolean mBeamDisallowed;
     45 
     46     @Override
     47     public void onCreate(Bundle savedInstanceState) {
     48         super.onCreate(savedInstanceState);
     49 
     50         final ActionBar actionBar = getActivity().getActionBar();
     51 
     52         mOldActivityTitle = actionBar.getTitle();
     53         actionBar.setTitle(R.string.android_beam_settings_title);
     54 
     55         mNfcAdapter = NfcAdapter.getDefaultAdapter(getActivity());
     56         mBeamDisallowed = ((UserManager) getActivity().getSystemService(Context.USER_SERVICE))
     57                 .hasUserRestriction(UserManager.DISALLOW_OUTGOING_BEAM);
     58         setHasOptionsMenu(true);
     59     }
     60 
     61     @Override
     62     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
     63         super.onCreateOptionsMenu(menu, inflater);
     64         HelpUtils.prepareHelpMenuItem(getActivity(), menu, R.string.help_uri_beam,
     65                 getClass().getName());
     66     }
     67 
     68     @Override
     69     public View onCreateView(LayoutInflater inflater, ViewGroup container,
     70             Bundle savedInstanceState) {
     71         mView = inflater.inflate(R.layout.android_beam, container, false);
     72 
     73         return mView;
     74     }
     75 
     76     @Override
     77     public void onActivityCreated(Bundle savedInstanceState) {
     78         super.onActivityCreated(savedInstanceState);
     79 
     80         SettingsActivity activity = (SettingsActivity) getActivity();
     81 
     82         mSwitchBar = activity.getSwitchBar();
     83         mSwitchBar.setChecked(!mBeamDisallowed && mNfcAdapter.isNdefPushEnabled());
     84         mSwitchBar.addOnSwitchChangeListener(this);
     85         mSwitchBar.setEnabled(!mBeamDisallowed);
     86         mSwitchBar.show();
     87     }
     88 
     89     @Override
     90     public void onDestroyView() {
     91         super.onDestroyView();
     92         if (mOldActivityTitle != null) {
     93             getActivity().getActionBar().setTitle(mOldActivityTitle);
     94         }
     95         mSwitchBar.removeOnSwitchChangeListener(this);
     96         mSwitchBar.hide();
     97     }
     98 
     99     @Override
    100     public void onSwitchChanged(Switch switchView, boolean desiredState) {
    101         boolean success = false;
    102         mSwitchBar.setEnabled(false);
    103         if (desiredState) {
    104             success = mNfcAdapter.enableNdefPush();
    105         } else {
    106             success = mNfcAdapter.disableNdefPush();
    107         }
    108         if (success) {
    109             mSwitchBar.setChecked(desiredState);
    110         }
    111         mSwitchBar.setEnabled(true);
    112     }
    113 
    114     @Override
    115     protected int getMetricsCategory() {
    116         return MetricsLogger.NFC_BEAM;
    117     }
    118 }
    119