Check if lockscreen is currently displayed

Question

I have a problem with lockscreen. Sometimes when I sleep the phone and then immediately after wake it up, onResume is called and then onPause which messes up my app. I thought that I could do a workaround and if lockscreen is displayed then ignore the logic that I have in onPause but I can't figure out how to check it. I tried to use PowerManger and KeyguardManager like suggested here but it didn't work. I also tried to check if activity hasWindowFocus() in onPause but it returns true even if lockscreen is showing. Is there any way to know if lockscreen is currently displayed?

Answer 1

Check this it will return true if your screen is locked.

/**
 * Returns true if the device is locked or screen turned off (in case password not set)
 */
public static boolean isDeviceLocked(Context context) {
    boolean isLocked = false;

    // First we check the locked state
    KeyguardManager keyguardManager = (KeyguardManager) context.getSystemService(Context.KEYGUARD_SERVICE);
    boolean inKeyguardRestrictedInputMode = keyguardManager.inKeyguardRestrictedInputMode();

    if (inKeyguardRestrictedInputMode) {
        isLocked = true;

    } else {
        // If password is not set in the settings, the inKeyguardRestrictedInputMode() returns false,
        // so we need to check if screen on for this case

        PowerManager powerManager = (PowerManager)context.getSystemService(Context.POWER_SERVICE);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT_WATCH) {
            isLocked = !powerManager.isInteractive();
        } else {
            //noinspection deprecation
            isLocked = !powerManager.isScreenOn();
        }
    }

    Loggi.d(String.format("Now device is %s.", isLocked ? "locked" : "unlocked"));
    return isLocked;
}