Brtdku

I'm trying to build a child lock app. An app that basically allows to add a child lock with a list of allowed apps for a child to use.

Most of the components are complete. I'm stuck at one specific step.
When on lock mode, If user (child) does press the home key, I'm able to intercept home key and re-launch the lock-mode-screen which holds a list of apps that can be accessed.

The issue is the delay that occurs (about 5-7 seconds) between the home button press and re-launch of my activity.

During this delay period, user (child) can access apps that are not locked. I'm trying to avoid this delay.

In the process to find possible solution for the above problem, I happened to refer an existing app - "KIDZ ZONE".

This specific app draws a UI/SCREEN with quite a lesser delay, about 1 second. I'm trying to understand how this can be replicated.

Any suggestions would be appreciated!

The possible ways I have tried is triggering a broadcast event and calling same activity. This works but with the delay of 5-7 seconds, which I want to minimize.

MainActivity -

protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);



        InnerRecevier innerReceiver = new InnerRecevier();

        IntentFilter intentFilter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);

        registerReceiver(innerReceiver, intentFilter);



    }

Broadcast Receiver -

public class InnerRecevier extends BroadcastReceiver {



    final String SYSTEM_DIALOG_REASON_KEY = "reason";

    final String SYSTEM_DIALOG_REASON_HOME_KEY = "homekey";



    @Override

    public void onReceive(final Context context, Intent intent) {

        String action = intent.getAction();

        if (Intent.ACTION_CLOSE_SYSTEM_DIALOGS.equals(action)) {

            String reason = intent.getStringExtra(SYSTEM_DIALOG_REASON_KEY);

            if (reason != null) {

                if (reason.equals(SYSTEM_DIALOG_REASON_HOME_KEY)) {



                    Intent i=new Intent(context.getApplicationContext(),MainActivity.class);

                            i.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);

                            i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

                            context.startActivity(i);

                }

            }

        }

    }

}

I'm trying to reduce the delay caused between home button press and re-launch of the activity. Attaching a gif file to show how the reference app handles the expected solution.

Reference - https://imgur.com/ME1dkQP.gif