CODEWITHSUNDEEP
androidandroid-studio
Christophermp
Christophermp

Reputation: 186

Dim screen upon idle time. Wake up upon screen input

So I am fairly new to the world of coding and I am doodling with a little private learning project. I have made a simple web browser based on WebView for a embedded android 7.1 ELOtouch device.

I have found plenty of articles online on how to turn the screen on/off etc but never really managed to make it work.

What I am trying to do is that the screen dims down to the lowest level after xx amount of time, let’s say 5min. And only dims back up to a defined level upon user touch/screen input.

The unit is always on and don’t have any form for advanced screen adjustments in settings, so as I see it, it has to be done programmatically.

Thankful for and advice or guidance.

Attached one of my sources:

How to change screen timeout programmatically?

Upvotes: 0

Views: 591

Answers (1)

navylover
navylover

Reputation: 13539

To change screen brightness by user touch, you could do like this:

In AndroidManifest.xml file, add this line:

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

And in some place of activity class file:

    Settings.System.putInt(this.getContentResolver(),
            Settings.System.SCREEN_BRIGHTNESS, 80);

    WindowManager.LayoutParams lp = getWindow().getAttributes();
    lp.screenBrightness =0.8f;
    getWindow().setAttributes(lp);

    startActivity(new Intent(this,DummyActivity.class));

Note: when setting up brightness,the modification doesn't take effect immediately, to solve this problem,just start another blank dummy activity and finish it in Oncreate()

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

Don' forget to include DummyActivity in AndroidManifest.xml.

Edited:

To dim screen after some time, the basic logic is same, and maybe you should create a Timer(TimerTask). Hope this is helpful!

Upvotes: 1

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