VolumeRockerSettings.java

package com.nitrogen.settings.fragments;

import com.android.internal.logging.MetricsProto.MetricsEvent;

import android.os.Bundle;
import android.support.v7.preference.ListPreference;
import android.support.v7.preference.Preference;
import android.preference.SwitchPreference;
import android.provider.Settings;
import android.provider.Settings.SettingNotFoundException;

import com.android.settings.R;
import com.android.settings.SettingsPreferenceFragment;

public class VolumeRockerSettings extends SettingsPreferenceFragment implements
        Preference.OnPreferenceChangeListener {

    private static final String VOLUME_KEY_CURSOR_CONTROL = "volume_key_cursor_control";

    private ListPreference mVolumeKeyCursorControl;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        addPreferencesFromResource(R.xml.nitrogen_settings_volume);

        // volume key cursor control
        mVolumeKeyCursorControl = (ListPreference) findPreference(VOLUME_KEY_CURSOR_CONTROL);
        if (mVolumeKeyCursorControl != null) {
            mVolumeKeyCursorControl.setOnPreferenceChangeListener(this);
            int volumeRockerCursorControl = Settings.System.getInt(getContentResolver(),
                    Settings.System.VOLUME_KEY_CURSOR_CONTROL, 0);
            mVolumeKeyCursorControl.setValue(Integer.toString(volumeRockerCursorControl));
            mVolumeKeyCursorControl.setSummary(mVolumeKeyCursorControl.getEntry());
        }
    }

    @Override
    public boolean onPreferenceChange(Preference preference, Object value) {

        if (preference == mVolumeKeyCursorControl) {
            String volumeKeyCursorControl = (String) value;
            int volumeKeyCursorControlValue = Integer.parseInt(volumeKeyCursorControl);
            Settings.System.putInt(getActivity().getContentResolver(),
                    Settings.System.VOLUME_KEY_CURSOR_CONTROL, volumeKeyCursorControlValue);
            int volumeKeyCursorControlIndex = mVolumeKeyCursorControl
                    .findIndexOfValue(volumeKeyCursorControl);
            mVolumeKeyCursorControl
                    .setSummary(mVolumeKeyCursorControl.getEntries()[volumeKeyCursorControlIndex]);
            return true;
        }
        return false;
    }

    @Override
    protected int getMetricsCategory() {
        return MetricsEvent.NITROGEN_SETTINGS;
    }
}