CODEWITHSUNDEEP
android
jacknad
jacknad

Reputation: 13739

Is there a way to force an android device to stay awake?

This app needs the device (and its display) to stay awake between onPreExecute() and onPostExecute().

Upvotes: 2

Views: 7531

Answers (3)

rask004
rask004

Reputation: 590

"full" PowerManager.WakeLock is now deprecated and will lose support.

For future compatibility, use the following to force the app to stay awake:

// keep awake    
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

// allow suspend
getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

No special permissions are required.

You will need to do this in the hosting activity. you could try nesting the AsyncTask, or using a callback interface implemented by the host Activity (think Fragment callbacks).

Developer Reference

Upvotes: 1

Paul Burke
Paul Burke

Reputation: 25584

Use a "full" PowerManager.WakeLock like in this post.

eg:

    PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
    PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK, "My Tag");
    wl.acquire();

Add permission to manifest file

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

Make sure to release it when done.

Upvotes: 7

DVK
DVK

Reputation: 129363

It's definitely possible - here's an example of an app which does that:

http://www.appsbeyond.com/apps/screen-suite

Upvotes: 2

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