[英]How do you set brightness of screen in Android?
我想要一个使用SeekBar
调整屏幕亮度的对话框。
如何使用SeekBar
显示可调节屏幕亮度的自定义对话框?
您可以使用此API 。 这将更改窗口而不是整个系统的屏幕亮度。
// Make the screen full bright for this activity.
WindowManager.LayoutParams lp = getWindow().getAttributes();
lp.screenBrightness = 1.0f;
getWindow().setAttributes(lp);
此代码段应为您提供帮助
pdlg = ProgressDialog.show(getParent(), "Loading...", "");
WindowManager.LayoutParams lp = pdlg.getWindow().getAttributes();
p.dimAmount=0.0f; //Dim Amount
pdlg.getWindow().setAttributes(lp); //Applying properties to progress dialog
pdlg.dismiss(); //Dismiss the dialog
嘿,您可以这样设置系统亮度:
//Set the system brightness using the brightness variable value
System.putInt(cResolver, System.SCREEN_BRIGHTNESS, brightness);
//Get the current window attributes
LayoutParams layoutpars = window.getAttributes();
//Set the brightness of this window
layoutpars.screenBrightness = brightness / (float)255;
//Apply attribute changes to this window
window.setAttributes(layoutpars);
或者您可以参考此完整教程
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