WindowManager.LayoutParams全解

public static class

WindowManager.LayoutParams

extends  ViewGroup.LayoutParams
implements  Parcelable

java.lang.Object
?	android.view.ViewGroup.LayoutParams
	?	android.view.WindowManager.LayoutParams

 WindowManager.LayoutParams 是 WindowManager 接口的嵌套類；它繼承於 ViewGroup.LayoutParams； 它用於向WindowManager描述Window的管理策略。

主要成員常量

Window flag系列

該系列主要用於對Window的flag進行設置。設置Window的flag,可以直接對Window的getAttributes()得到其 WindowManager.LayoutParams對象,然后直接對它flag變量操作。也可以Window的addFlags(int flags)方法，setFlags(int flags, int mask)方法，clearFlags(int flags)方法進行操作。

比如設置全屏 ：

 Window window = getWindow(); 

 WindowManager.LayoutParams winParams = win.getAttributes();

  winParams.flags=winParams.flags|WindowManager.LayoutParams.FLAG_FULLSCREEN ；

 或

 window.addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);

 或

 window.setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); 

 取消全屏

 Window window = getWindow(); 

 winParams.flags=winParams.flags&~WindowManager.LayoutParams.FLAG_FULLSCREEN;

 或

  window.clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);

 或

window.setFlags(0, WindowManager.LayoutParams.FLAG_FULLSCREEN);

所有Window flag如下：

int	FLAGS_CHANGED	用於表示flags發生了變化，關於此的詳細內容請看后文。
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. 當該window對用戶可見的時候，允許鎖屏。
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	Window flag: blur everything behind this window. 讓該window后所有東西都模糊（blur）
int	FLAG_DIM_BEHIND	Window flag: everything behind this window will be dimmed. 讓該window后所有的東西都成暗淡（dim）
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	Window flag: turn on dithering when compositing this window to the screen. 開啟抖動（dithering）
int	FLAG_FORCE_NOT_FULLSCREEN	Window flag: Override {@link #FLAG_FULLSCREEN and force the screen decorations (such as status bar) to be shown. 恢復window非全屏顯示  （讓背景不是暗淡的）
int	FLAG_FULLSCREEN	Window flag: Hide all screen decorations (e.g. 讓window進行全屏顯示
int	FLAG_HARDWARE_ACCELERATED	Indicates whether this window should be hardware accelerated. 對該window進行硬件加速. 該flag必須在設置你的Activity或Dialog的Content View之前進行設置， 而且如果你在mainfest文件中用android:hardwareAccelerated開啟了該屬性的話，那么你在程序中就不能再改變它。mainfest文件中android:hardwareAccelerated屬性默認是開啟的("true")。
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. 當該window對用戶可見時，讓設備屏幕處於高亮（bright）狀態。
int	FLAG_LAYOUT_INSET_DECOR	Window flag: a special option only for use in combination with FLAG_LAYOUT_IN_SCREEN.
int	FLAG_LAYOUT_IN_SCREEN	Window flag: place the window within the entire screen, ignoring decorations around the border (a.k.a. 讓window占滿整個手機屏幕，不留任何邊界（border）
int	FLAG_LAYOUT_NO_LIMITS	Window flag: allow window to extend outside of the screen. window大小不再不受手機屏幕大小限制，即window可能超出屏幕之外，這時部分內容在屏幕之外。
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. 讓window不能獲得焦點，這樣用戶快就不能向該window發送按鍵事件及按鈕事件
int	FLAG_NOT_TOUCHABLE	Window flag: this window can never receive touch events. 讓該window不接受觸摸屏事件
int	FLAG_NOT_TOUCH_MODAL	Window flag: Even when this window is focusable (its {@link #FLAG_NOT_FOCUSABLE is not set), allow any pointer events outside of the window to be sent to the windows behind it. 即使在該window在可獲得焦點情況下，仍然把該window之外的任何event發送到該window之后的其他window.
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: don't allow screen shots while this window is displayed. 當該window在進行顯示的時候，不允許截屏。
int	FLAG_SHOW_WALLPAPER	Window flag: ask that the system wallpaper be shown behind your window. 在該window后顯示系統的牆紙（wallpaper）
int	FLAG_SHOW_WHEN_LOCKED	Window flag: special flag to let windows be shown when the screen is locked. 當鎖屏的時候，顯示該window.
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. When this flag is not set, the first pointer that goes down determines the window to which all subsequent touches go until all pointers go up. When this flag is set, each pointer (not necessarily the first) that goes down determines the window to which all subsequent touches of that pointer will go until that pointer goes up thereby enabling touches with multiple pointers to be split across multiple windows 當該window在可以接受觸摸屏情況下，讓因在該window之外，而發送到后面的window的觸摸屏可以支持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. 當手機處於睡眠狀態時，如果屏幕被按下，那么該window將第一個收到到事件
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. 當然window被顯示的時候，系統將把它當做一個用戶活動事件，以點亮手機屏幕。
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. 如果你設置了該flag,那么在你FLAG_NOT_TOUNCH_MODAL的情況下，即使觸摸屏事件發送在該window之外，其事件被發送到了后面的window,那么該window仍然將以MotionEvent.ACTION_OUTSIDE形式收到該觸摸屏事件

softInputMode系列

該系列主要用於表示softInputMode，我們可以通過WindowManager.LayoutParams的softInputMode變量直接進行設置。 softInputMode只能是一個顯示軟鍵盤時的window調整方式bite與一個控制軟鍵盤顯示狀態的bite的組合。

顯示軟鍵盤時的window調整方式可以是 SOFT_INPUT_ADJUST_NOTHING ， SOFT_INPUT_ADJUST_PAN ，

SOFT_INPUT_ADJUST_RESIZE ， SOFT_INPUT_ADJUST_UNSPECIFIED 之一。

用於描述軟鍵盤顯示的規則可以是 SOFT_INPUT_STATE_ALWAYS_HIDDEN ， SOFT_INPUT_STATE_ALWAYS_VISIBLE ，

SOFT_INPUT_STATE_HIDDEN ， SOFT_INPUT_STATE_VISIBLE ， SOFT_INPUT_STATE_UNSPECIFIED 之一

關於softInputMode的更多知識請參考《 軟件盤的開關》

所有的softInputMode系列常量如下：

int	SOFT_INPUT_ADJUST_NOTHING	Adjustment option for softInputMode: set to have a window not adjust for a shown input method. 當顯示軟鍵盤時，不調整window的布局
int	SOFT_INPUT_ADJUST_PAN	Adjustment option for softInputMode: set to have a window pan when an input method is shown, so it doesn't need to deal with resizing but just panned by the framework to ensure the current input focus is visible. 當顯示軟鍵盤時，調整window的空白區域來顯示軟鍵盤。即使調整空白區域，軟鍵盤還是有可能遮擋一些有內容區域，這時用戶就只有退出軟鍵盤才能看到這些被遮擋區域並進行交互。
int	SOFT_INPUT_ADJUST_RESIZE	Adjustment option for softInputMode: set to allow the window to be resized when an input method is shown, so that its contents are not covered by the input method. 當顯示軟鍵盤時，調整window內的控件大小以便顯示軟鍵盤。這樣的話控件可能會變形。
int	SOFT_INPUT_ADJUST_UNSPECIFIED	Adjustment option for softInputMode: nothing specified. 不指定顯示軟件盤時，window的調整方式。
int	SOFT_INPUT_IS_FORWARD_NAVIGATION	Bit for softInputMode: set when the user has navigated forward to the window. 表示用戶導航（navigate）到了你的window
int	SOFT_INPUT_MASK_ADJUST	Mask for softInputMode of the bits that determine the way that the window should be adjusted to accommodate the soft input window. 顯示軟鍵盤時，用於表示window調整方式的bite的mask。 顯示軟鍵盤時的window調整方式可以是SOFT_INPUT_ADJUST_NOTHING，SOFT_INPUT_ADJUST_PAN，SOFT_INPUT_ADJUST_RESIZE，SOFT_INPUT_ADJUST_UNSPECIFIED。 用於描述軟鍵盤顯示的規則可以是SOFT_INPUT_STATE_ALWAYS_HIDDEN，SOFT_INPUT_STATE_ALWAYS_VISIBLE， SOFT_INPUT_STATE_HIDDEN，SOFT_INPUT_STATE_VISIBLE，SOFT_INPUT_STATE_UNSPECIFIED之一
int	SOFT_INPUT_MASK_STATE	Mask for softInputMode of the bits that determine the desired visibility state of the soft input area for this window. 用於描述軟鍵盤顯示規則的bite的mask.
int	SOFT_INPUT_MODE_CHANGED	用於表示softInputMode發生了變化。關於此的詳細內容請看后文。
int	SOFT_INPUT_STATE_ALWAYS_HIDDEN	Visibility state for softInputMode: please always hide any soft input area when this window receives focus. 總是隱藏軟鍵盤。
int	SOFT_INPUT_STATE_ALWAYS_VISIBLE	Visibility state for softInputMode:  please always make the soft input area visible when this window receives input focus. 總是顯示軟鍵盤
int	SOFT_INPUT_STATE_HIDDEN	Visibility state for softInputMode: please hide any soft input area when normally appropriate (when the user is navigating forward to your window). 用戶導航（navigate）到你的窗口的時候,隱藏軟鍵盤
int	SOFT_INPUT_STATE_UNCHANGED	Visibility state for softInputMode: please don't change the state of the soft input area.
int	SOFT_INPUT_STATE_UNSPECIFIED	Visibility state for softInputMode: no state has been specified. 沒有軟鍵盤顯示的約定規則
int	SOFT_INPUT_STATE_VISIBLE	Visibility state for softInputMode: please show the soft input area when normally appropriate (when the user is navigating forward to your window). 用戶導航（navigate）到你的窗口的時候，顯示軟鍵盤

Window type系列

該系列主要用於表示 window 的類型。我們可以通過 WindowManager.LayoutParams 的 type 變量直接進行設置.

int	TYPE_APPLICATION	Window type: a normal application window. 普通的應用程序window，token必須設置為Activity的token，以指出該窗口屬誰
int	TYPE_APPLICATION_ATTACHED_DIALOG	Window type: like TYPE_APPLICATION_PANEL, but layout of the window happens as that of a top-level window, not as a child of its container. 對話框。類似於面板窗口，繪制類似於頂層窗口，而不是宿主的子窗口。
int	TYPE_APPLICATION_MEDIA	Window type: window for showing media (e.g. 媒體窗口，例如視頻。顯示於宿主窗口下層。
int	TYPE_APPLICATION_PANEL	Window type: a panel on top of an application window. 面板窗口，顯示於宿主窗口上層
int	TYPE_APPLICATION_STARTING	Window type: special application window that is displayed while the application is starting. 用於應用程序啟動時所顯示的窗口。應用本身不要使用這種類型。它用於讓系統顯示些信息，直到應用程序可以開啟自己的窗口
int	TYPE_APPLICATION_SUB_PANEL	Window type: a sub-panel on top of an application window. 應用程序窗口的子面板。顯示於所有面板窗口的上層。（GUI的一般規律，越“子”越靠上）
int	TYPE_BASE_APPLICATION	Window type: an application window that serves as the "base" window of the overall application; all other application windows will appear on top of it. 所有程序窗口的“基地”窗口，其他應用程序窗口都顯示在它上面。
int	TYPE_CHANGED	表示window的類型發生了變化，關於此的詳細內容請看后文。
int	TYPE_INPUT_METHOD	Window type: internal input methods windows, which appear above the normal UI. 內部輸入法窗口，顯示於普通UI之上。應用程序可重新布局以免被此窗口覆蓋
int	TYPE_INPUT_METHOD_DIALOG	Window type: internal input methods dialog windows, which appear above the current input method window. 內部輸入法對話框，顯示於當前輸入法窗口之上
int	TYPE_KEYGUARD	Window type: keyguard window. 鎖屏窗口
int	TYPE_KEYGUARD_DIALOG	Window type: dialogs that the keyguard shows 鎖屏時顯示的對話框
int	TYPE_PHONE	Window type: phone. 電話窗口。它用於電話交互（特別是呼入）。它置於所有應用程序之上，狀態欄之下。
int	TYPE_PRIORITY_PHONE	Window type: priority phone UI, which needs to be displayed even if the keyguard is active. 電話優先，當鎖屏時顯示。此窗口不能獲得輸入焦點，否則影響鎖屏。
int	TYPE_SEARCH_BAR	Window type: the search bar. 搜索欄。只能有一個搜索欄；它位於屏幕上方。
int	TYPE_STATUS_BAR	Window type: the status bar. 狀態欄類型的window。只能有一個狀態欄window；它位於屏幕頂端，其他窗口都位於它下方。
int	TYPE_STATUS_BAR_PANEL	Window type: panel that slides out from over the status bar 狀態欄的滑動面板
int	TYPE_SYSTEM_ALERT	Window type: system window, such as low power alert. 系統提示window,比如電池低的警告。它總是出現在應用程序窗口之上。
int	TYPE_SYSTEM_DIALOG	Window type: panel that slides out from the status bar 系統對話框。（例如音量調節框）
int	TYPE_SYSTEM_ERROR	Window type: internal system error windows, appear on top of everything they can. 系統內部錯誤提示，顯示於所有內容之上
int	TYPE_SYSTEM_OVERLAY	Window type: system overlay windows, which need to be displayed on top of everything else. 系統頂層窗口。顯示在其他一切內容之上。此窗口不能獲得輸入焦點，否則影響鎖屏。
int	TYPE_TOAST	Window type: transient notifications. toast類型的window
int	TYPE_WALLPAPER	Window type: wallpaper window, placed behind any window that wants to sit on top of the wallpaper. 用於牆紙的window

window 的類型被分為了3大類:

Application windows (ranging from FIRST_APPLICATION_WINDOW to LAST_APPLICATION_WINDOW ) are normal top-level application windows. For these types of windows, the token must be set to the token of the activity they are a part of (this will normally be done for you if token is null).

Sub-windows (ranging from FIRST_SUB_WINDOW to LAST_SUB_WINDOW ) are associated with another top-level window. For these types of windows, the token must be the token of the window it is attached to.

System windows (ranging from FIRST_SYSTEM_WINDOW to LAST_SYSTEM_WINDOW ) are special types of windows for use by the system for specific purposes. They should not normally be used by applications, and a special permission is required to use them.

系統專門定義了 FIRST_APPLICATION_WINDOW  ,  LAST_APPLICATION_WINDOW , FIRST_SUB_WINDOW ,  LAST_SUB_WINDOW,

FIRST_SYSTEM_WINDOW,LAST_SYSTEM_WINDOW 以表示window的3大類型的類型的取值的范圍。

int	FIRST_APPLICATION_WINDOW	Start of window types that represent normal application windows. Constant Value: 1 (0x00000001)
int	FIRST_SUB_WINDOW	Start of types of sub-windows. Constant Value: 1000 (0x000003e8)
int	FIRST_SYSTEM_WINDOW	Start of system-specific window types. Constant Value: 2000 (0x000007d0)

int	LAST_APPLICATION_WINDOW	End of types of application windows. Constant Value: 99 (0x00000063)
int	LAST_SUB_WINDOW	End of types of sub-windows. Constant Value: 1999 (0x000007cf)
int	LAST_SYSTEM_WINDOW	End of types of system windows. Constant Value: 2999 (0x00000bb7)

關於更多請看下文《 WindowManager.LayoutParams（下）》

WindowManager.LayoutParams（下）  

2011-08-07 08:08:54|  分類： Android基礎 |  標簽：windowmanager   |字號大中小 訂閱

 

 

本文參照自： http://developer.android.com/reference/android/view/WindowManager.LayoutParams.html

BRIGHTNESS系列

該系列主要用於設置window的 brightness ( screenBrightness / buttonBrightness )。 我們可以通過 WindowManager.LayoutParams 的 screenBrightness / buttonBrightness 變量直接進行設置。

其中 screenBrightness 表示屏幕的b rightness ,而 buttonBrightness 表示一般按鍵和鍵盤按鍵的 brightness

float	BRIGHTNESS_OVERRIDE_FULL	Value for screenBrightness and buttonBrightness  indicating that the screen or button backlight brightness should be set to the hightest value when this window is in front. 把brightness(screenBrightness/buttonBrightness)設置到最高值。
float	BRIGHTNESS_OVERRIDE_NONE	Default value for screenBrightness and buttonBrightness indicating that the brightness value is not overridden for this window and normal brightness policy should be used. 不對brightness(screenBrightness/buttonBrightness)重新進行設置，采用默認的普通值。
float	BRIGHTNESS_OVERRIDE_OFF	Value for screenBrightness and buttonBrightness indicating that the screen or button backlight brightness should be set to the lowest value when this window is in front. 把brightness(screenBrightness/buttonBrightness)設置到最低值。

changed系列

該系列主要用於  int copyFrom (WindowManager.LayoutParams o)函數中。

在函數中，首先將用參數中傳入的 WindowManager.LayoutParams的信息復制到本 WindowManager.LayoutParams 中，然后返回一個整數，以bite形式表示調用該函數后 WindowManager.LayoutParams的哪些信息發送了變化

int	ALPHA_CHANGED	用於表示成員變量alpha是否被改變
int	ANIMATION_CHANGED	用於表示成員變量windowAnimations是否被改變
int	DIM_AMOUNT_CHANGED	用於表示成員變量dimAmount是否被改變
int	FLAGS_CHANGED	用於表示成員變量flags是否被改變
int	LAYOUT_CHANGED	用於表示layout是否被改變.這里的layout是指以下變量所包含的信息： width，height,x,y, verticalMargin，verticalWeight,horizontalMargin，horizontalWeight
int	SCREEN_BRIGHTNESS_CHANGED	用於表示brightness是否被改變. 這里的brightness是指以下變量對應的信息：screenBrightness，buttonBrightness
int	SCREEN_ORIENTATION_CHANGED	用於表示成員變量screenOrientation是否被改變
int	SOFT_INPUT_MODE_CHANGED	用於表示成員變量softInputMode是否被改變
int	TITLE_CHANGED	用於表示成員變量title是否被改變
int	TYPE_CHANGED	用於表示成員變量type是否被改變
int	FORMAT_CHANGED	Constant Value: 8 (0x00000008) 用於表示成員變量format是否被改變

成員變量

繼承於 ViewGroup.LayoutParams 的成員變量

public int	height	Information about how tall the view wants to be.
public LayoutAnimationController.AnimationParameters	layoutAnimationParameters	Used to animate layouts.
public int	width	Information about how wide the view wants to be.

自身的成員變量

public static final Creator<WindowManager.LayoutParams>	CREATOR
public float	alpha	An alpha value to apply to this entire window.
public float	buttonBrightness	This can be used to override the standard behavior of the button and keyboard backlights.
public float	dimAmount	When FLAG_DIM_BEHIND is set, this is the amount of dimming to apply.
public int	flags	Various behavioral options/flags.
public int	format	The desired bitmap format.
public int	gravity	Placement of window within the screen as per Gravity.
public float	horizontalMargin	The horizontal margin, as a percentage of the container's width, between the container and the widget.
public float	horizontalWeight	Indicates how much of the extra space will be allocated horizontally to the view associated with these LayoutParams.
public int	memoryType	This field is deprecated. this is ignored
public String	packageName	Name of the package owning this window.
public float	screenBrightness	This can be used to override the user's preferred brightness of the screen.
public int	screenOrientation	Specific orientation value for a window.
public int	softInputMode	Desired operating mode for any soft input area.
public int	systemUiVisibility	Control the visibility of the status bar.
public IBinder	token	Identifier for this window.
public int	type	The general type of window.
public float	verticalMargin	The vertical margin, as a percentage of the container's height, between the container and the widget.
public float	verticalWeight	Indicates how much of the extra space will be allocated vertically to the view associated with these LayoutParams.
public int	windowAnimations	A style resource defining the animations to use for this window.
public int	x	X position for this window.
public int	y	Y position for this window.

成員函數

ublic Methods
final int	copyFrom(WindowManager.LayoutParams o)
String	debug(String output) Returns a String representation of this set of layout parameters.
int	describeContents() Describe the kinds of special objects contained in this Parcelable's marshalled representation.
final CharSequence	getTitle()
static boolean	mayUseInputMethod(int flags) Given a particular set of window manager flags, determine whether such a window may be a target for an input method when it has focus.
final void	setTitle(CharSequence title)
String	toString() Returns a string containing a concise, human-readable description of this object.
void	writeToParcel(Parcel out, int parcelableFlags) Flatten this object in to a Parcel.