Add on/off actionbar switch for NFC Tap To Share.

Change-Id: I009a31d8862a23e15d89fe9813eca02e06469531
diff --git a/src/com/android/settings/WirelessSettings.java b/src/com/android/settings/WirelessSettings.java
index beab491..7efa15d 100644
--- a/src/com/android/settings/WirelessSettings.java
+++ b/src/com/android/settings/WirelessSettings.java
@@ -54,6 +54,7 @@
     private AirplaneModeEnabler mAirplaneModeEnabler;
     private CheckBoxPreference mAirplaneModePreference;
     private NfcEnabler mNfcEnabler;
+    private NfcAdapter mNfcAdapter;
 
     /**
      * Invoked on each preference click in this hierarchy, overrides
@@ -113,7 +114,8 @@
         }
 
         // Remove NFC if its not available
-        if (NfcAdapter.getDefaultAdapter(activity) == null) {
+        mNfcAdapter = NfcAdapter.getDefaultAdapter(activity);
+        if (mNfcAdapter == null) {
             getPreferenceScreen().removePreference(nfc);
             getPreferenceScreen().removePreference(zeroclick);
         }
@@ -175,6 +177,18 @@
 
         mAirplaneModeEnabler.resume();
         mNfcEnabler.resume();
+
+        if (mNfcAdapter != null) {
+            // Update zero-click subtitle
+            Preference zeroClick = getPreferenceScreen().
+                    findPreference(KEY_ZEROCLICK_SETTINGS);
+
+            if (mNfcAdapter.zeroClickEnabled()) {
+                zeroClick.setSummary(R.string.zeroclick_on_summary);
+            } else {
+                zeroClick.setSummary(R.string.zeroclick_off_summary);
+            }
+        }
     }
 
     @Override
diff --git a/src/com/android/settings/nfc/ZeroClick.java b/src/com/android/settings/nfc/ZeroClick.java
index 7868662..4d657d9 100644
--- a/src/com/android/settings/nfc/ZeroClick.java
+++ b/src/com/android/settings/nfc/ZeroClick.java
@@ -16,28 +16,54 @@
 
 package com.android.settings.nfc;
 
+import android.app.ActionBar;
+import android.app.Activity;
 import android.app.Fragment;
-import android.content.ContentResolver;
 import android.nfc.NfcAdapter;
 import android.os.Bundle;
-import android.preference.CheckBoxPreference;
-import android.preference.Preference;
-import android.provider.Settings;
+import android.preference.PreferenceActivity;
+import android.view.Gravity;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
-import android.widget.CheckBox;
 import android.widget.CompoundButton;
-import android.widget.EditText;
-import android.widget.CompoundButton.OnCheckedChangeListener;
-import android.util.Log;
+import android.widget.Switch;
 import com.android.settings.R;
 
 public class ZeroClick extends Fragment
         implements CompoundButton.OnCheckedChangeListener {
     private View mView;
-    private CheckBox mCheckbox;
     private NfcAdapter mNfcAdapter;
+    private Switch mActionBarSwitch;
+
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        Activity activity = getActivity();
+
+        mActionBarSwitch = new Switch(activity);
+
+        if (activity instanceof PreferenceActivity) {
+            PreferenceActivity preferenceActivity = (PreferenceActivity) activity;
+            if (preferenceActivity.onIsHidingHeaders() || !preferenceActivity.onIsMultiPane()) {
+                final int padding = activity.getResources().getDimensionPixelSize(
+                        R.dimen.action_bar_switch_padding);
+                mActionBarSwitch.setPadding(0, 0, padding, 0);
+                activity.getActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM,
+                        ActionBar.DISPLAY_SHOW_CUSTOM);
+                activity.getActionBar().setCustomView(mActionBarSwitch, new ActionBar.LayoutParams(
+                        ActionBar.LayoutParams.WRAP_CONTENT,
+                        ActionBar.LayoutParams.WRAP_CONTENT,
+                        Gravity.CENTER_VERTICAL | Gravity.RIGHT));
+            }
+        }
+
+        mActionBarSwitch.setOnCheckedChangeListener(this);
+
+        mNfcAdapter = NfcAdapter.getDefaultAdapter(getActivity());
+        mActionBarSwitch.setChecked(mNfcAdapter.zeroClickEnabled());
+    }
 
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
@@ -48,10 +74,9 @@
     }
 
     private void initView(View view) {
-        mCheckbox = (CheckBox) mView.findViewById(R.id.zeroclick_checkbox);
-        mCheckbox.setOnCheckedChangeListener(this);
         mNfcAdapter = NfcAdapter.getDefaultAdapter(getActivity());
-        mCheckbox.setChecked(mNfcAdapter.zeroClickEnabled());
+        mActionBarSwitch.setOnCheckedChangeListener(this);
+        mActionBarSwitch.setChecked(mNfcAdapter.zeroClickEnabled());
     }
 
     @Override
@@ -67,15 +92,15 @@
     @Override
     public void onCheckedChanged(CompoundButton buttonView, boolean desiredState) {
         boolean success = false;
-        mCheckbox.setEnabled(false);
+        mActionBarSwitch.setEnabled(false);
         if (desiredState) {
             success = mNfcAdapter.enableZeroClick();
         } else {
             success = mNfcAdapter.disableZeroClick();
         }
         if (success) {
-            mCheckbox.setChecked(desiredState);
+            mActionBarSwitch.setChecked(desiredState);
         }
-        mCheckbox.setEnabled(true);
+        mActionBarSwitch.setEnabled(true);
     }
 }