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,然後直接對它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後文。
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後所有東西都模糊(blur)
int FLAG_DIM_BEHIND Window flag: everything behind this window will be dimmed.
讓該window後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.
開啓抖動(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.
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開啓了該屬性的話,那麼你在程序中就不能再改變它。mainfest文件中android:hardwareAccelerated屬性默認是開啓的("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.
window佔滿整個手機屏幕,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.
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之後的其他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後顯示系統的牆紙(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,而發送到後面的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,那麼該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,那麼在你FLAG_NOT_TOUNCH_MODAL的情況下,即使觸摸屏事件發送在該window之外,其事件被髮送到了後面的window,那麼該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_NOTHINGSOFT_INPUT_ADJUST_PAN
SOFT_INPUT_ADJUST_RESIZESOFT_INPUT_ADJUST_UNSPECIFIED之一。
用於描述軟鍵盤顯示的規則可以是SOFT_INPUT_STATE_ALWAYS_HIDDENSOFT_INPUT_STATE_ALWAYS_VISIBLE
SOFT_INPUT_STATE_HIDDENSOFT_INPUT_STATE_VISIBLESOFT_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的佈局
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_NOTHINGSOFT_INPUT_ADJUST_PAN,SOFT_INPUT_ADJUST_RESIZESOFT_INPUT_ADJUST_UNSPECIFIED
用於描述軟鍵盤顯示的規則可以是SOFT_INPUT_STATE_ALWAYS_HIDDENSOFT_INPUT_STATE_ALWAYS_VISIBLE
SOFT_INPUT_STATE_HIDDEN,SOFT_INPUT_STATE_VISIBLESOFT_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後文。
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.LayoutParamstype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必須設置爲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,繪製類似於頂層窗口,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.
用於應用程序啓動時所顯示的窗口。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啓自己的窗口
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後文。
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。應用程序可重新佈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 的類型被分爲了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FIRST_APPLICATION_WINDOW , LAST_APPLICATION_WINDOW,FIRST_SUB_WINDOWLAST_SUB_WINDOW,
FIRST_SYSTEM_WINDOW,LAST_SYSTEM_WINDOW 以表示window的3大類型的類型的取值的範圍。
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 |  標籤:windowmanager   |字號 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.LayoutParamsscreenBrightness/buttonBrightness變量直接進行設置。
其中screenBrightness表示屏幕的brightness,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.
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,採用默認的普通值。
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.
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的信息複製到本WindowManager.LayoutParams,然後返回一個整數,以bite形式表示調用該函數後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.這裏的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.
這裏的
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.
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