Main.java Source code

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Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright (c) 2016. by Hoang Hiep (hoanghiep8899@gmail.com)
 * This file AccountUtils.java is part of File Manager
 * Create at 3/6/16 2:19 PM
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

import android.content.Context;

import android.content.SharedPreferences;
import android.preference.PreferenceManager;
import android.text.TextUtils;
import android.util.Log;

import java.util.UUID;

public class Main {
    private static final String PREF_ACTIVE_ACCOUNT = "chosen_account";
    private static final String PREFIX_PREF_GCM_KEY = "gcm_key_";

    public static String getGcmKey(final Context context, final String accountName) {
        SharedPreferences sp = getSharedPreferences(context);
        String gcmKey = sp.getString(makeAccountSpecificPrefKey(accountName, PREFIX_PREF_GCM_KEY), null);

        // if there is no current GCM key, generate a new random one
        if (TextUtils.isEmpty(gcmKey)) {
            gcmKey = UUID.randomUUID().toString();
            Log.d("GoogleAcount",
                    "No GCM key on account " + accountName + ". Generating random one: " + sanitizeGcmKey(gcmKey));
            setGcmKey(context, accountName, gcmKey);
        }

        return gcmKey;
    }

    private static SharedPreferences getSharedPreferences(final Context context) {
        return PreferenceManager.getDefaultSharedPreferences(context);
    }

    private static String makeAccountSpecificPrefKey(Context ctx, String prefix) {
        return hasActiveAccount(ctx) ? makeAccountSpecificPrefKey(getActiveAccountName(ctx), prefix) : null;
    }

    private static String makeAccountSpecificPrefKey(String accountName, String prefix) {
        return prefix + accountName;
    }

    public static String sanitizeGcmKey(String key) {
        if (key == null) {
            return "(null)";
        } else if (key.length() > 8) {
            return key.substring(0, 4) + "........" + key.substring(key.length() - 4);
        } else {
            return "........";
        }
    }

    public static void setGcmKey(final Context context, final String accountName, final String gcmKey) {
        SharedPreferences sp = getSharedPreferences(context);
        sp.edit().putString(makeAccountSpecificPrefKey(accountName, PREFIX_PREF_GCM_KEY), gcmKey).apply();
        Log.d("GoogleAcount", "GCM key of account " + accountName + " set to: " + sanitizeGcmKey(gcmKey));
    }

    /**
     * Specify whether the app has an active account set.
     *
     * @param context Context used to lookup {@link SharedPreferences} the value is stored with.
     */
    public static boolean hasActiveAccount(final Context context) {
        return !TextUtils.isEmpty(getActiveAccountName(context));
    }

    /**
     * Return the accountName the app is using as the active Google Account.
     *
     * @param context Context used to lookup {@link SharedPreferences} the value is stored with.
     */
    public static String getActiveAccountName(final Context context) {
        SharedPreferences sp = getSharedPreferences(context);
        return sp.getString(PREF_ACTIVE_ACCOUNT, null);
    }
}