Android Open Source - RoboLock Robo Lock

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License

The source code is released under:

Apache License

Java Source Code

package org.lucas.robolock;
/*  ww  w . j  a v a2  s.c o  m*/
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.preference.PreferenceManager;

/**
 * Created by lucas on 10/24/13.
 * <p/>
 * To lock an app:
 * In every Activity's onResume, call RoboLock.onResume(), lock the screen if failed to pass the check.
 * In every Activity's onPause, call RoboLock.onPause()
 * <p/>
 * To lock an Activity:
 * call RoboLock.onResume() in this Activity's onResume, and onPause respectively.
 * <p/>
 * To lock another app:
 * register receiver.
 * <p/>
 * To manually lock/unlock:
 * call RoboLock.lock() and RoboLock.unlock().
 * <p/>
 * call RoboLock.init(context) before using this class.
 */
public class RoboLock {

    private static SharedPreferences lockSP;

    private static final String TAG = RoboLock.class.getName();

    public static void init(Context context) {
        if (lockSP == null) {
            lockSP = PreferenceManager.getDefaultSharedPreferences(context);
        }
    }

    /*
    * Call this method in every Activity's onResume() if you want to lock the whole app. Other wise only call this in the Activity's onResume you want to lock.
    */
    public static void onResume(Activity activity) {
        checkLock(activity);
    }

    /**
     * Call this method in every Activity's onPause() if you want to lock the whole app. Other wise only call this in the Activity's onPause you want to lock.
     */
    public static void onPause() {
        // save the Activity's onPause time.
        lockSP.edit().putLong(SettingsActivity.KEY_PREF_ROBOLOCK_LAST_ONPAUSE, System.currentTimeMillis()).commit();
    }

    /**
     * This brings up the LockActivity. Call finish() the Activity once the user pass the authentication.
     *
     * @param activity In which activity to lock the app.
     */
    public static void lock(Activity activity) {
        // show LockActivity
        showLockActivity(activity);
    }


    public static void setLocker() {

    }

    /**
     * Check if this activity can be launched or not.
     * Add this method to every Activity that you want to lock.
     *
     * @param activity The activity to be launched.
     */
    private static void checkLock(Activity activity) {
        long timeElapsed = System.currentTimeMillis() - getLastOnPauseTime(activity);
        if (lockSP.getBoolean(SettingsActivity.KEY_PREF_ROBOLOCK_AUTO_LOCK_ENABLED, false) && timeElapsed > getAutoLockTime(activity)) {
            showLockActivity(activity);
        }
    }


    private static void showLockActivity(Activity activity) {
        Intent intent = new Intent();
        intent.setClass(activity, LockActivity.class);
        activity.startActivity(intent);
    }

    private static long getLastOnPauseTime(Context context) {
        return lockSP.getLong(SettingsActivity.KEY_PREF_ROBOLOCK_LAST_ONPAUSE, 0L);
    }

    public static long getAutoLockTime(Context context) {
        long time = SettingsActivity.DEFAULT_LOCK_TIME;
        try {
            String minutes = lockSP.getString(SettingsActivity.KEY_PREF_ROBOLOCK_AUTO_LOCK_TIME, "error");
            time = Integer.parseInt(minutes) * 60 * 1000;
        } catch (Exception e) {
        }
        return time;
    }
}

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