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// go full screen WindowManager.LayoutParams attrs = mActivity.getWindow().getAttributes (); attrs.flags |= WindowManager.LayoutParams.FLAG_FULLSCREEN; mActivity.getWindow().setAttributes(attrs); // go non-full screen WindowManager.LayoutParams attrs = mActivity.getWindow().getAttributes (); attrs.flags &= (~WindowManager.LayoutParams.FLAG_FULLSCREEN); mActivity.getWindow().setAttributes(attrs);

You can define attributes in the top <resources> element or inside of a <declare-styleable> element. If I'm going to use an attr in more than one place I put it in the root element. Note, all attributes share the same global namespace. That means that even if you create a new attribute inside of a <declare-styleable> element it can be used outside of it and you cannot create another attribute with the same name of a different type.

An <attr> element has two xml attributes name and format. name lets you call it something and this is how you end up referring to it in code, e.g., R.attr.my_attribute. The format attribute can have different values depending on the 'type' of attribute you want. reference - if it references another resource id (e.g, "@color/my_color", "@layout/my_layout") color boolean dimension float integer string fraction enum - normally implicitly defined flag - normally implicitly defined You can set the format to multiple types by using |, e.g., format="reference|color".

$ sudo gedit /etc/udev/rules.d/99-android.rules

$ sudo restart udev

$ adb kill-server $ adb start-server