常用属性设置

// 设置横屏显示

setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);

//全屏显示，不要状态栏

requestWindowFeature(Window.FEATURE_NO_TITLE);

getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
// 设置屏幕常亮
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN);

//获取屏幕的分辨率以及DPI值

screenWidth = getResources().getDisplayMetrics().widthPixels;
screenHeight = getResources().getDisplayMetrics().heightPixels;
screenDpi = getResources().getDisplayMetrics().densityDpi;