CODEWITHSUNDEEP
androidkeyguard
Sanjay Joshi
Sanjay Joshi

Reputation: 2066

How to lock/unlock phone programmatically : Android

In my application, I need to lock and unlock phone. I searched for it, I found many answers, I tried them but no one is working.

I need to unlock phone on onCreate() and lock phone again while I'm finishing my activity.

Do you guys know any method to do the same?

Thanks friends.

EDIT:

Some links, that I have tried are:

How to display Activity when the screen is locked?

Android screen lock/ unlock programmatically

https://groups.google.com/forum/#!topic/android-developers/BOLjJTMO4zE

In my application I'm scheduling a task using AlarmManager and then enabling the phone lock. My activity is getting started on scheduled time but it not unlocking my phone. when I'm unlocking my phone manually running activity is getting appeared

Upvotes: 10

Views: 33513

Answers (3)

sharath yadhav
sharath yadhav

Reputation: 546

on BroadcastReceiver set up the wakelock and in the activity

Do This:

Window window = this.getWindow();
window.addFlags(LayoutParams.FLAG_DISMISS_KEYGUARD);
window.addFlags(LayoutParams.FLAG_SHOW_WHEN_LOCKED);
window.addFlags(LayoutParams.FLAG_TURN_SCREEN_ON);

import following

import android.view.Window;
import android.view.WindowManager.LayoutParams;

Upvotes: 16

dzboot02
dzboot02

Reputation: 2980

As of API 27, FLAG_SHOW_WHEN_LOCKED and FLAG_TURN_SCREEN_ON were deprecated. Instead use this in the Manifest

<activity
    android:name=".MyActivity"
    android:turnScreenOn="true"
    android:showWhenLocked="true"/>

Or, for general usage, in your activity:

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O_MR1) {
        setTurnScreenOn(true);
        setShowWhenLocked(true);
    } else {
        Window window = getWindow();
        window.addFlags(LayoutParams.FLAG_SHOW_WHEN_LOCKED);
        window.addFlags(LayoutParams.FLAG_TURN_SCREEN_ON);
    }
}

Upvotes: 7

Arfan Mirza
Arfan Mirza

Reputation: 686

Try this...

@Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            getWindow().addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);
                    setContentView(R.layout.activity_main);
    }

    @Override
        protected void onPause() {
            super.onPause();
            getWindow().clearFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD);


        }

Upvotes: 1

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