How do I keep the screen on in my App

Question

For my Android app I never want the phone to lock or the back light to turn off

User · Answer

You need to use Power Manager to acquire a wake lock in your application.

Most probably you are interested in a FULL_WAKE_LOCK:

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

User · Answer

Adding  android keepScreenOn  true  in the XML of the activity s  you want to keep the screen on is the best option  Add that line to the main layout of the activity s     Something like this   lt LinearLayout xmlns android  http   schemas android com apk res android      xmlns tools  http   schemas android com tools      android layout width  match parent      android layout height  match parent      android orientation  vertical      android keepScreenOn  true  gt         lt  LinearLayout gt

User · Answer

Lots of answers already exist here  I am answering this question with additional and reliable solutions   Using PowerManager WakeLock is not so reliable a solution  as the app requires additional permissions    lt uses-permission android name  android permission WAKE LOCK    gt    Also  if it accidentally remains holding the wake lock  it can leave the screen on   So  I recommend not using the PowerManager WakeLock solution  Instead of this  use any of the following solutions   First    We can use getWindow   addFlags WindowManager LayoutParams FLAG KEEP SCREEN ON   in onCreate     Override         protected void onCreate Bundle icicle                super onCreate icicle                   getWindow   addFlags WindowManager LayoutParams FLAG KEEP SCREEN ON                 Second    we can use keepScreenOn  1  implementation using setKeepScreenOn   in java code    Override     protected void onCreate Bundle savedInstanceState               TODO Auto-generated method stub         super onCreate savedInstanceState           View v   getLayoutInflater   inflate R layout driver home  null     or any View  incase generated programmatically            v setKeepScreenOn true           setContentView v              Docs http   developer android com reference android view View html setKeepScreenOn boolean   2  Adding keepScreenOn to xml layout   lt  xml version  1 0  encoding  utf-8   gt   lt RelativeLayout xmlns android  http   schemas android com apk res android      android layout width  fill parent      android layout height  fill parent      android keepScreenOn  true   gt    Docs http   developer android com reference android view View html attr android 3akeepScreenOn  Notes  some useful points     It doesn t matter that keepScreenOn should be used on a Main Root Parent View  It can be used with any child view and will work the same way it works in a parent view  The only thing that matters is that the view s visibility must be visible  Otherwise  it will not work

User · Answer

At this point method  final PowerManager pm    PowerManager  getSystemService Context POWER SERVICE           this mWakeLock   pm newWakeLock PowerManager SCREEN DIM WAKE LOCK   My Tag            this mWakeLock acquire      is deprecated   You should use getWindow   addFlags WindowManager LayoutParams FLAG KEEP SCREEN ON   and getWindow   clearFlags android view WindowManager LayoutParams FLAG KEEP SCREEN ON

User · Answer

There are multiple ways you can do it   Solution 1   class MainActivity extends AppCompactActivity        Override     protected void onCreate Bundle icicle            super onCreate icicle               getWindow   addFlags WindowManager LayoutParams FLAG KEEP SCREEN ON             Solution 2   In activity main xml file  simply add    lt android KeepScreenOn  true   gt    My advice  please don t use WakeLock  If you use it  you have to define extra permission  and mostly this thing is useful in CPU s development environment    Also  make sure to turn off the screen while closing the activity  You can do it in this way      public void onDestry         getWindow   clearFlags android view WindowManager LayoutParams FLAG KEEP SCREEN ON

User · Answer

Add one line of code after setContentView   in onCreate    public void onCreate Bundle savedInstanceState            super onCreate savedInstanceState           setContentView R layout activity flag           getWindow   addFlags WindowManager LayoutParams FLAG KEEP SCREEN ON

User · Answer

Use PowerManager WakeLock class inorder to perform this  See the following code   import android os PowerManager   public class MyActivity extends Activity        protected PowerManager WakeLock mWakeLock           Called when the activity is first created          Override     public void onCreate final Bundle icicle            setContentView R layout main               This code together with the one in onDestroy               will make the screen be always on until this Activity gets destroyed             final PowerManager pm    PowerManager  getSystemService Context POWER SERVICE           this mWakeLock   pm newWakeLock PowerManager SCREEN DIM WAKE LOCK   My Tag            this mWakeLock acquire                Override     public void onDestroy             this mWakeLock release            super onDestroy              Use the follwing permission in manifest file     lt uses-permission android name  android permission WAKE LOCK    gt    Hope this will solve your problem

User · Answer

You can simply use setKeepScreenOn   from the View class

User · Answer

getWindow   addFlags WindowManager LayoutParams FLAG KEEP SCREEN ON     getWindow is a method defined for activities  and won t require you to find a View first

User · Answer

Don t Use Wake Lock   It requires permission and other stuff and may cause error if you forget to set it in right time    The easiest way is to use the below code when you want to keep your screen on     getWindow   addFlags WindowManager LayoutParams FLAG KEEP SCREEN ON     One addition to the answer if you want to remove or terminate keep Screen on  getWindow   clearFlags android view WindowManager LayoutParams FLAG KEEP SCREEN ON     you can also see here    And the best and easiest way    Using  android keepScreenOn  true   in layout root of your activity does the same thing without extra code  But it will remain it in Keep Scree on State    It can be vary on your demand See here

User · Answer

No need to add permission and do tricks  Just use below text in your main layout     android keepScreenOn  true

[android] How do I keep the screen on in my App?

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