Android Open Source - photo-paper Feature List Preference

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License

The source code is released under:
MIT License
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Java Source Code

package com.lukekorth.android_500px.views;
//from   ww w .j  a  v  a2  s  .  c om
import android.annotation.TargetApi;
import android.app.AlertDialog;
import android.content.Context;
import android.content.Intent;
import android.os.Build;
import android.preference.ListPreference;
import android.preference.Preference;
import android.util.AttributeSet;

import com.lukekorth.android_500px.R;
import com.lukekorth.android_500px.SearchActivity;
import com.lukekorth.android_500px.WallpaperApplication;
import com.lukekorth.android_500px.helpers.Settings;
import com.lukekorth.android_500px.helpers.Utils;
import com.lukekorth.android_500px.models.ActivityResumedEvent;
import com.lukekorth.android_500px.models.EnableCategoriesEvent;
import com.lukekorth.android_500px.models.User;
import com.lukekorth.android_500px.models.UserUpdatedEvent;
import com.lukekorth.android_500px.services.ApiService;
import com.squareup.otto.Subscribe;

public class FeatureListPreference extends ListPreference implements Preference.OnPreferenceChangeListener {

    public FeatureListPreference(Context context) {
        super(context);
        init();
    }

    public FeatureListPreference(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
    }

    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
    public FeatureListPreference(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init();
    }

    @TargetApi(Build.VERSION_CODES.LOLLIPOP)
    public FeatureListPreference(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
        super(context, attrs, defStyleAttr, defStyleRes);
        init();
    }

    private void init() {
        WallpaperApplication.getBus().register(this);
        setOnPreferenceChangeListener(this);
        initEntries();
    }

    @Override
    protected void onPrepareForRemoval() {
        super.onPrepareForRemoval();
        WallpaperApplication.getBus().unregister(this);
    }

    @Subscribe
    public void onActivityResumed(ActivityResumedEvent event) {
        setFeatureSummary(Settings.getFeature(getContext()));
    }

    @Subscribe
    public void onUserUpdated(UserUpdatedEvent event) {
        if (event.getUser() == null &&
                getValue().equals("your_favorites")) {
            setValue("your_favorites");
            setFeatureSummary(getValue());
        }
    }

    @Override
    protected void onPrepareDialogBuilder(AlertDialog.Builder builder) {
        initEntries();
        super.onPrepareDialogBuilder(builder);
    }

    private void initEntries() {
        if (User.isUserLoggedIn()) {
            setEntries(R.array.logged_in_features);
            setEntryValues(R.array.logged_in_feature_index);
        } else {
            setEntries(R.array.features);
            setEntryValues(R.array.feature_index);
        }
    }

    private void setFeatureSummary(String index) {
        if (Settings.getFeature(getContext()).equals("search")) {
            setSummary(getContext().getString(R.string.search) + ": " +
                    Settings.getSearchQuery(getContext()));
        } else if (User.isUserLoggedIn()) {
            setSummary(Utils.getListSummary(getContext(), R.array.logged_in_feature_index,
                    R.array.logged_in_features, index, getContext().getString(R.string.popular)));
        } else {
            setSummary(Utils.getListSummary(getContext(), R.array.feature_index, R.array.features,
                    index, getContext().getString(R.string.popular)));
        }
    }

    @Override
    public boolean onPreferenceChange(Preference preference, Object newValue) {
        if (!newValue.toString().equals("search")) {
            Settings.setFeature(getContext(), newValue.toString());
            WallpaperApplication.getBus().post(new EnableCategoriesEvent(true));
            setFeatureSummary(newValue.toString());
            getContext().startService(new Intent(getContext(), ApiService.class));
            return true;
        } else {
            WallpaperApplication.getBus().post(new EnableCategoriesEvent(false));
            getContext().startActivity(new Intent(getContext(), SearchActivity.class));
            return false;
        }
    }
}
Java Source Code List
