Android program gets and sets the method of activity brightness _android

An example of this article describes the way Android is programmed to get and set activity brightness. Share to everyone for your reference, specific as follows:

This API is only suitable for 2.1 or more versions:

/** * To determine whether the automatic brightness adjustment is turned on * * @param acontext * @return/public static Boolean isautobrightness (Contentresolver acontent
  Resolver) {Boolean automicbrightness = false; try {automicbrightness = Settings.System.getInt (Acontentresolver, Settings.System.SCREEN_BRIGHTNESS_MODE) = =
  Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC;
  catch (Settingnotfoundexception e) {e.printstacktrace ();
return automicbrightness; /** * Get the brightness of the screen * * @param activity * @return/public static int getscreenbrightness [activity activity] {int now
  Brightnessvalue = 0;
  Contentresolver resolver = Activity.getcontentresolver (); try {nowbrightnessvalue = android.provider.Settings.System.getInt (resolver, Settings.System.SCREEN_BRIGHTNES
  S);
  catch (Exception e) {e.printstacktrace ();
return nowbrightnessvalue; /** * Set Brightness * * @param activity * @param brightness/public static void setbrightness (activity activity, int Brigh tness) {//SettinGs. System.putint (Activity.getcontentresolver (),//Settings.System.SCREEN_BRIGHTNESS_MODE,//Settings.System.SCREEN_
  Brightness_mode_manual);
  Windowmanager.layoutparams LP = Activity.getwindow (). GetAttributes ();
  lp.screenbrightness = float.valueof (Brightness) * (1f/255f);
Activity.getwindow (). SetAttributes (LP); /** * Stop Automatic brightness adjustment * * @param activity/public static void stopautobrightness (activity activity) {SETTINGS.SYSTEM.P Utint (Activity.getcontentresolver (), Settings.System.SCREEN_BRIGHTNESS, Settings.System.SCREEN_BRIGHTNESS_MODE
_manual); /** * Open Brightness automatic adjustment * * @param activity/public static void startautobrightness (activity activity) {Settings.system. Putint (Activity.getcontentresolver (), Settings.System.SCREEN_BRIGHTNESS_MODE, Settings.System.SCREEN_BRIGHTNES
S_mode_automatic); /** * Save Brightness setting status * * @param resolver * @param brightness/public static void Savebrightness (Contentresolver resolve R, int brightness) {uri uri = andRoid.provider.Settings.System. Geturifor ("screen_brightness");
  Android.provider.Settings.System.putInt (resolver, "screen_brightness", brightness);
Resolver.notifychange (URI, NULL);

 }

Use Seekbar for brightness control:

Sseekbar = (SeekBar) Findviewbyid (R.id.seek_bar);
Sseekbar.setonseekbarchangelistener (New Onseekbarchangelistener () {
  @Override public
  Void Onstoptrackingtouch (SeekBar SeekBar) {
    //TODO auto-generated method stub
  }
  @Override public
  Void Onstarttrackingtouch (SeekBar SeekBar) {
  }
  @Override public
  void onprogresschanged (SeekBar SeekBar, int Progress,
      Boolean fromuser) {
    if (Progress <) {
    } else {
      setbrightness (test2activity.this, progress);
    }
  }
;
Gets the position of the current brightness
int a =getscreenbrightness (this);
Sseekbar.setprogress (a);

<seekbar
  android:id= "@+id/seek_bar"
  android:layout_width= "200DP"
  android:layout_height= "WRAP_" Content "
  android:layout_alignparentbottom=" true "
  android:max=" 255 "
  android:maxheight=" 8DP
  " android:minheight= "8DP"
  android:paddingbottom= "5DP"
  android:paddingleft= "13DP"
  android: paddingright= "13DP"
  android:progress= "0"
   />

I hope this article will help you with the Android program.