requestWindowFeature与getWindow().addFlags总是搞混，记录一下

requestWindowFeature (int featureId)

Enable extended window features. This is a convenience for calling .

featureId	The desired feature as defined in .

int	DEFAULT_FEATURES	The default features enabled
int	FEATURE_ACTION_BAR	Flag for enabling the Action Bar.
int	FEATURE_ACTION_BAR_OVERLAY	Flag for requesting an Action Bar that overlays window content.
int	FEATURE_ACTION_MODE_OVERLAY	Flag for specifying the behavior of action modes when an Action Bar is not present.
int	FEATURE_CONTEXT_MENU	Flag for the context menu.
int	FEATURE_CUSTOM_TITLE	Flag for custom title.
int	FEATURE_INDETERMINATE_PROGRESS	Flag for indeterminate progress
int	FEATURE_LEFT_ICON	Flag for having an icon on the left side of the title bar
int	FEATURE_NO_TITLE	Flag for the "no title" feature, turning off the title at the top of the screen.
int	FEATURE_OPTIONS_PANEL	Flag for the "options panel" feature.
int	FEATURE_PROGRESS	Flag for the progress indicator feature
int	FEATURE_RIGHT_ICON	Flag for having an icon on the right side of the title bar
int	ID_ANDROID_CONTENT	The ID that the main layout in the XML layout file should have.
int	PROGRESS_END	Ending value for the (primary) progress
int	PROGRESS_INDETERMINATE_OFF	Flag for setting the progress bar's indeterminate mode off
int	PROGRESS_INDETERMINATE_ON	Flag for setting the progress bar's indeterminate mode on
int	PROGRESS_SECONDARY_END	Highest possible value for the secondary progress
int	PROGRESS_SECONDARY_START	Lowest possible value for the secondary progress
int	PROGRESS_START	Starting value for the (primary) progress
int	PROGRESS_VISIBILITY_OFF	Flag for setting the progress bar's visibility to GONE
int	PROGRESS_VISIBILITY_ON	Flag for setting the progress bar's visibility to VISIBLE

getWindow().addFlags(int)
public void setFlags (int flags, int mask)
Set the flags of the window, as per the WindowManager.LayoutParams flags.

int	FLAGS_CHANGED
int	FLAG_ALLOW_LOCK_WHILE_SCREEN_ON	Window flag: as long as this window is visible to the user, allow the lock screen to activate while the screen is on.
int	FLAG_ALT_FOCUSABLE_IM	Window flag: invert the state of FLAG_NOT_FOCUSABLE with respect to how this window interacts with the current method.
int	FLAG_BLUR_BEHIND	This constant was deprecated in API level 14. Blurring is no longer supported.
int	FLAG_DIM_BEHIND	Window flag: everything behind this window will be dimmed.
int	FLAG_DISMISS_KEYGUARD	Window flag: when set the window will cause the keyguard to be dismissed, only if it is not a secure lock keyguard.
int	FLAG_DITHER	This constant was deprecated in API level 17. This flag is no longer used.
int	FLAG_FORCE_NOT_FULLSCREEN	Window flag: override FLAG_FULLSCREEN and force the screen decorations (such as the status bar) to be shown.
int	FLAG_FULLSCREEN	Window flag: hide all screen decorations (such as the status bar) while this window is displayed.
int	FLAG_HARDWARE_ACCELERATED	Indicates whether this window should be hardware accelerated.
int	FLAG_IGNORE_CHEEK_PRESSES	Window flag: intended for windows that will often be used when the user is holding the screen against their face, it will aggressively filter the event stream to prevent unintended presses in this situation that may not be desired for a particular window, when such an event stream is detected, the application will receive a CANCEL motion event to indicate this so applications can handle this accordingly by taking no action on the event until the finger is released.
int	FLAG_KEEP_SCREEN_ON	Window flag: as long as this window is visible to the user, keep the device's screen turned on and bright.
int	FLAG_LAYOUT_INSET_DECOR	Window flag: a special option only for use in combination with FLAG_LAYOUT_IN_SCREEN.
int	FLAG_LAYOUT_IN_OVERSCAN	Window flag: allow window contents to extend in to the screen's overscan area, if there is one.
int	FLAG_LAYOUT_IN_SCREEN	Window flag: place the window within the entire screen, ignoring decorations around the border (such as the status bar).
int	FLAG_LAYOUT_NO_LIMITS	Window flag: allow window to extend outside of the screen.
int	FLAG_LOCAL_FOCUS_MODE	Flag for a window in local focus mode.
int	FLAG_NOT_FOCUSABLE	Window flag: this window won't ever get key input focus, so the user can not send key or other button events to it.
int	FLAG_NOT_TOUCHABLE	Window flag: this window can never receive touch events.
int	FLAG_NOT_TOUCH_MODAL	Window flag: even when this window is focusable (its FLAG_NOT_FOCUSABLE is not set), allow any pointer events outside of the window to be sent to the windows behind it.
int	FLAG_SCALED	Window flag: a special mode where the layout parameters are used to perform scaling of the surface when it is composited to the screen.
int	FLAG_SECURE	Window flag: treat the content of the window as secure, preventing it from appearing in screenshots or from being viewed on non-secure displays.
int	FLAG_SHOW_WALLPAPER	Window flag: ask that the system wallpaper be shown behind your window.
int	FLAG_SHOW_WHEN_LOCKED	Window flag: special flag to let windows be shown when the screen is locked.
int	FLAG_SPLIT_TOUCH	Window flag: when set the window will accept for touch events outside of its bounds to be sent to other windows that also support split touch.
int	FLAG_TOUCHABLE_WHEN_WAKING	Window flag: when set, if the device is asleep when the touch screen is pressed, you will receive this first touch event.
int	FLAG_TRANSLUCENT_NAVIGATION	Window flag: request a translucent navigation bar with minimal system-provided background protection.
int	FLAG_TRANSLUCENT_STATUS	Window flag: request a translucent status bar with minimal system-provided background protection.
int	FLAG_TURN_SCREEN_ON	Window flag: when set as a window is being added or made visible, once the window has been shown then the system will poke the power manager's user activity (as if the user had woken up the device) to turn the screen on.
int	FLAG_WATCH_OUTSIDE_TOUCH	Window flag: if you have set FLAG_NOT_TOUCH_MODAL, you can set this flag to receive a single special MotionEvent with the action MotionEvent.ACTION_OUTSIDE for touches that occur outside of your window.