Add toggle for enable/disable auto hotspot off

Bug: 69323125
Test: RunSettingsRoboTests
Change-Id: I18896401240f75bdf2bdf187c2c7a7b623b20c43

src/com/android/settings/wifi/tether/WifiTetherAutoOffPreferenceController.java

@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.wifi.tether;
+
+import android.content.Context;
+import android.provider.Settings;
+import android.support.v14.preference.SwitchPreference;
+import android.support.v7.preference.Preference;
+
+import com.android.settings.core.BasePreferenceController;
+
+public class WifiTetherAutoOffPreferenceController extends BasePreferenceController implements
+        Preference.OnPreferenceChangeListener {
+
+    public WifiTetherAutoOffPreferenceController(Context context, String preferenceKey) {
+        super(context, preferenceKey);
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return AVAILABLE;
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        final boolean settingsOn = Settings.Global.getInt(mContext.getContentResolver(),
+                Settings.Global.SOFT_AP_TIMEOUT_ENABLED, 0) != 0;
+
+        ((SwitchPreference) preference).setChecked(settingsOn);
+    }
+
+    @Override
+    public boolean onPreferenceChange(Preference preference, Object newValue) {
+        final boolean settingsOn = (Boolean) newValue;
+        Settings.Global.putInt(mContext.getContentResolver(),
+                Settings.Global.SOFT_AP_TIMEOUT_ENABLED, settingsOn ? 1 : 0);
+        return true;
+    }
+}