CODEWITHSUNDEEP
androidandroid-wake-lock
s123
s123

Reputation: 471

Wake Lock does not dim screen

I am writing an Android app, and would like to have my screen dim after acquiring a wake lock. However, my screen does not dim. It just continues (does not crash) as if nothing happened. I know the wake lock IS begin set because of some test code not shown here. The following is my code:

//Relevant declarations:
    PowerManager.WakeLock w1;
    PowerManager pm;

public void onClick(View view) {
pm = (PowerManager) getSystemService((Context.POWER_SERVICE));
w1 = pm.newWakeLock((PowerManager.SCREEN_DIM_WAKE_LOCK), "My Tag");
w1.acquire(); //DOES NOT DIM
}

public void onShake () {
if (w1.isHeld())
{
w1.release();
}

//Manifest:
    <uses-permission android:name="android.permission.WAKE_LOCK"/>

Any ideas? Thanks.

Upvotes: 1

Views: 1353

Answers (2)

CommonsWare
CommonsWare

Reputation: 1006674

w1.acquire(); //DOES NOT DIM

If you are expecting it to immediately dim, that is not how it works. SCREEN_DIM_WAKE_LOCK does mean "change the current brightness to dim". It means "we need the screen to be at least dim". Anything else, such as using the device, can cause the screen to go to full brightness.

Upvotes: 4

xry
xry

Reputation: 707

Add the following permission in your manifest:

<uses-permission android:name="android.permission.WAKE_LOCK" />

Upvotes: 1

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