adjust brightness of LCD to minimum without seekbar in android device

Question

GOOD DAY! im new in android programming, just want to ask this question.

adjusting the brightness of lcd/led to minimum in just 1 button? i am planning to make an application to save battery life for my own device. if it is possible please teach me how thank you!

Answer 1

Android Brightness Reference Developer link

0 = dark bright.

1 = full bright.

    click.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            WindowManager.LayoutParams layoutParams = getWindow().getAttributes();
            layoutParams.screenBrightness = 0;        //brightness level
            getWindow().setAttributes(layoutParams);
        }
    });