全屏

getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);

取消全屏

getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);

//把屏幕设置为横屏

setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);

//把屏幕设置为竖屏

setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);

android.view.ViewGroup.LayoutParams layoutParams = main

					.getLayoutParams();

			if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) {

				// 设置为横屏

				setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); // 横屏设置

				layoutParams.height = screenHeight;

				mTitleBarRl.setVisibility(View.GONE);

			} else {

				setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);// 竖屏设置

				layoutParams.height = original_height;

				mTitleBarRl.setVisibility(View.VISIBLE);

			}

			main.setLayoutParams(layoutParams);