Android系统标栏显示和隐藏

显示标栏：

WindowManager.LayoutParams laParams = getWindow().getAttributes();
laParams.flags &= (~WindowManager.LayoutParams.FLAG_FULLSCREEN);
getWindow().setAttributes(laParams);
getWindow().clearFlags(WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS);

隐藏标栏：

WindowManager.LayoutParams laParams = getWindow().getAttributes();
laParams.flags |= WindowManager.LayoutParams.FLAG_FULLSCREEN;
getWindow().setAttributes(laParams);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS);