[Android] 隐藏系统状态栏

单页

setContentView方法前加入

requestWindowFeature(Window.FEATURE_NO_TITLE);
//定义全屏参数
int flag = WindowManager.LayoutParams.FLAG_FULLSCREEN;
//获得窗口对象
Window window = this.getWindow();
//设置Flag标识
window.setFlags(flag, flag);

全局

Manifest主题切换为.NoTitleBar.Fullscreen