Password protect launch of android application

Question

I\'m searching for a way to password protect my android application on launch, i.e. when launching/resuming an activity belonging to my apk-package a password dialog will be sho

Answer 1

So this is the solution I stuck with. In my Application class i store a long variable with the system time when an activity was last paused.

import android.app.Application;
public class MyApplication extends Application {
    public long mLastPause;

    @Override
    public void onCreate() {
        super.onCreate();
        mLastPause = 0;
        Log.w("Application","Launch");
    }
}

In every onPause-method I update this value to the current time.

@Override
public void onPause() {
    super.onPause();
    ((MyApplication)this.getApplication()).mLastPause = System.currentTimeMillis();
}

And in every onResume I compare it to the current time. If a certain amount of time (currently 5 seconds) has passed my password prompt is shown.

@Override
public void onResume() {
    super.onResume();
    MyApplication app = ((MyApplication)act.getApplication());
    if (System.currentTimeMillis() - app.mLastPause > 5000) {
        // If more than 5 seconds since last pause, prompt for password
    }
}