WindowManager.LayoutParams详解总结和对应实例
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WindowManager.LayoutParams详解总结和对应实例
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public static class
implements?Parcelable
?WindowManager.LayoutParams 是 WindowManager 接口的嵌套類；它繼承于 ViewGroup.LayoutParams；?它用于向WindowManager描述Window的管理策略。 主要成員常量 Window flag系列 該系列主要用于對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：
softInputMode系列 該系列主要用于表示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。 用于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 關于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：
Window type系列 該系列主要用于表示window的類型。我們可以通過WindowManager.LayoutParams的type變量直接進行設置.
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。
BRIGHTNESS系列 該系列主要用于設置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brightness,而buttonBrightness表示一般按鍵和鍵盤按鍵的brightness
changed系列 該系列主要用于?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
成員變量 繼承于ViewGroup.LayoutParams的成員變量
自身的成員變量
成員函數
結束！ 轉載地址：http://blog.csdn.net/i_lovefish/article/details/8050025 實例地址：http://www.cnblogs.com/mengdd/p/3824782.html
public static class
WindowManager.LayoutParams
extends?ViewGroup.LayoutParamsimplements?Parcelable
| java.lang.Object | ||
| ???? | android.view.ViewGroup.LayoutParams | |
| ? | ???? | android.view.WindowManager.LayoutParams |
| int | FLAGS_CHANGED | 用于表示flags發生了變化，關于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 |
| 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，讓設備屏幕處于高亮（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后顯示系統的墻紙（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. 當手機處于睡眠狀態時，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 |
| int | SOFT_INPUT_ADJUST_NOTHING | Adjustment option for?softInputMode: set to have a window not adjust for a shown input method. | |
| 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. 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并進行交互。 ? ???????????????? | |
| 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. 這樣的話控件可能會變形。 | |
| int | SOFT_INPUT_ADJUST_UNSPECIFIED | Adjustment option for?softInputMode: nothing specified. | |
| int | SOFT_INPUT_IS_FORWARD_NAVIGATION | Bit for?softInputMode: set when the user has navigated forward to the 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. SOFT_INPUT_ADJUST_NOTHING， SOFT_INPUT_ADJUST_PAN， SOFT_INPUT_ADJUST_RESIZE， SOFT_INPUT_ADJUST_UNSPECIFIED。 SOFT_INPUT_STATE_ALWAYS_HIDDEN， SOFT_INPUT_STATE_ALWAYS_VISIBLE， 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. | |
| int | SOFT_INPUT_MODE_CHANGED | 用于表示softInputMode發生了變化。關于此的詳細內容請看后文。 | |
| int | SOFT_INPUT_STATE_ALWAYS_HIDDEN | Visibility state for?softInputMode:? focus. | |
| int | SOFT_INPUT_STATE_ALWAYS_VISIBLE | Visibility state for?softInputMode: receives input focus. | |
| int | SOFT_INPUT_STATE_HIDDEN | Visibility state for?softInputMode:? the user is navigating forward to your window). | |
| 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. | |
| int | SOFT_INPUT_STATE_VISIBLE | Visibility state for?softInputMode: please show the soft input area when normally appropriate? | |
Window type系列 該系列主要用于表示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。類似于面板窗口，繪制類似于頂層窗口，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。顯示于宿主窗口下層。 |
| int | TYPE_APPLICATION_PANEL | Window type: a panel on top of an application window. 面板窗口，顯示于宿主窗口上層 |
| int | TYPE_APPLICATION_STARTING | Window type: special application window that is displayed while the application is starting. 用于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。它用于讓系統顯示些信息，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。顯示于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，關于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，顯示于普通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，顯示于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。它用于電話交互（特別是呼入）。它置于所有應用程序之上，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；它位于屏幕上方。 |
| 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；它位于屏幕頂端，其他窗口都位于它下方。 |
| 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，顯示于所有內容之上 |
| 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. 用于墻紙的window |
| 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) |
| 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。 |
| int | ALPHA_CHANGED | 用于表示成員變量alpha是否被改變 |
| int | ANIMATION_CHANGED | 用于表示成員變量windowAnimations是否被改變 |
| int | DIM_AMOUNT_CHANGED | 用于表示成員變量dimAmount是否被改變 |
| int | FLAGS_CHANGED | 用于表示成員變量flags是否被改變 |
| int | LAYOUT_CHANGED | 用于表示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 | 用于表示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 | 用于表示成員變量screenOrientation是否被改變 |
| int | SOFT_INPUT_MODE_CHANGED | 用于表示成員變量softInputMode是否被改變 |
| int | TITLE_CHANGED | 用于表示成員變量title是否被改變 |
| int | TYPE_CHANGED | 用于表示成員變量type是否被改變 |
| int | FORMAT_CHANGED | Constant Value:?8?(0x00000008) 用于表示成員變量format是否被改變 |
| 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. |
| 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. |
| 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. |
Android懸浮窗實現 使用WindowManager
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WindowManager介紹
通過Context.getSystemService(Context.WINDOW_SERVICE)可以獲得?WindowManager對象。
每一個WindowManager對象都和一個特定的?Display綁定。
想要獲取一個不同的display的WindowManager，可以用?createDisplayContext(Display)來獲取那個display的?Context，之后再使用：
Context.getSystemService(Context.WINDOW_SERVICE)來獲取WindowManager。
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使用WindowManager可以在其他應用最上層，甚至手機桌面最上層顯示窗口。
調用的是WindowManager繼承自基類的addView方法和removeView方法來顯示和隱藏窗口。具體見后面的實例。
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另：API 17推出了Presentation，它將自動獲取display的Context和WindowManager，可以方便地在另一個display上顯示窗口。
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WindowManager實現懸浮窗例子
聲明權限
首先在manifest中添加如下權限：
<!-- 顯示頂層浮窗 --> <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
注意：在MIUI上需要在設置中打開本應用的”顯示懸浮窗”開關，并且重啟應用，否則懸浮窗只能顯示在本應用界面內，不能顯示在手機桌面上。
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服務獲取和基本參數設置
// 獲取應用的ContextmContext = context.getApplicationContext();// 獲取WindowManagermWindowManager = (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE);參數設置：
final WindowManager.LayoutParams params = new WindowManager.LayoutParams();// 類型params.type = WindowManager.LayoutParams.TYPE_SYSTEM_ALERT;// WindowManager.LayoutParams.TYPE_SYSTEM_ALERT// 設置flagint flags = WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM;// | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;// 如果設置了WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE，彈出的View收不到Back鍵的事件params.flags = flags;// 不設置這個彈出框的透明遮罩顯示為黑色params.format = PixelFormat.TRANSLUCENT;// FLAG_NOT_TOUCH_MODAL不阻塞事件傳遞到后面的窗口// 設置 FLAG_NOT_FOCUSABLE 懸浮窗口較小時，后面的應用圖標由不可長按變為可長按// 不設置這個flag的話，home頁的劃屏會有問題 params.width = LayoutParams.MATCH_PARENT;params.height = LayoutParams.MATCH_PARENT;params.gravity = Gravity.CENTER;?
點擊和按鍵事件
除了View中的各個控件的點擊事件之外，彈窗View的消失控制需要一些處理。
點擊彈窗外部可隱藏彈窗的效果，首先，懸浮窗是全屏的，只不過最外層的是透明或者半透明的：
布局如下：
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:layout_gravity="center"android:background="@color/darken_background"android:gravity="center"android:orientation="vertical" ><RelativeLayoutandroid:id="@+id/popup_window"android:layout_width="@dimen/dialog_window_width"android:layout_height="@dimen/dialog_window_height"android:background="@color/white"android:orientation="vertical" ><TextViewandroid:id="@+id/title"android:layout_width="match_parent"android:layout_height="@dimen/dialog_title_height"android:gravity="center"android:text="@string/default_title"android:textColor="@color/dialog_title_text_color"android:textSize="@dimen/dialog_title_text_size" /><Viewandroid:id="@+id/title_divider"android:layout_width="match_parent"android:layout_height="2dp"android:layout_below="@id/title"android:background="@drawable/dialog_title_divider" /><TextViewandroid:id="@+id/content"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_below="@id/title_divider"android:gravity="center"android:padding="@dimen/dialog_content_padding_side"android:text="@string/default_content"android:textColor="@color/dialog_content_text_color"android:textSize="@dimen/dialog_content_text_size" /><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:layout_alignParentBottom="true"android:orientation="horizontal"android:paddingBottom="@dimen/dialog_content_padding_bottom"android:paddingLeft="@dimen/dialog_content_padding_side"android:paddingRight="@dimen/dialog_content_padding_side" ><Buttonandroid:id="@+id/negativeBtn"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_weight="1"android:background="@drawable/promote_window_negative_btn_selector"android:focusable="true"android:padding="@dimen/dialog_button_padding"android:text="@string/default_btn_cancel"android:textColor="@color/dialog_negative_btn_text_color"android:textSize="@dimen/dialog_button_text_size" /><Buttonandroid:id="@+id/positiveBtn"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_marginLeft="18dp"android:layout_weight="1"android:background="@drawable/promote_window_positive_btn_selector"android:focusable="true"android:padding="@dimen/dialog_button_padding"android:text="@string/default_btn_ok"android:textColor="@color/dialog_positive_btn_text_color"android:textSize="@dimen/dialog_button_text_size" /></LinearLayout></RelativeLayout></LinearLayout>?
點擊外部可消除設置：
// 點擊窗口外部區域可消除// 這點的實現主要將懸浮窗設置為全屏大小，外層有個透明背景，中間一部分視為內容區域// 所以點擊內容區域外部視為點擊懸浮窗外部final View popupWindowView = view.findViewById(R.id.popup_window);// 非透明的內容區域 view.setOnTouchListener(new OnTouchListener() {@Overridepublic boolean onTouch(View v, MotionEvent event) {LogUtil.i(LOG_TAG, "onTouch");int x = (int) event.getX();int y = (int) event.getY();Rect rect = new Rect();popupWindowView.getGlobalVisibleRect(rect);if (!rect.contains(x, y)) {WindowUtils.hidePopupWindow();}LogUtil.i(LOG_TAG, "onTouch : " + x + ", " + y + ", rect: "+ rect);return false;}});?
點擊Back鍵可隱藏彈窗：
注意Flag不能設置WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE。
// 點擊back鍵可消除view.setOnKeyListener(new OnKeyListener() {@Overridepublic boolean onKey(View v, int keyCode, KeyEvent event) {switch (keyCode) {case KeyEvent.KEYCODE_BACK:WindowUtils.hidePopupWindow();return true;default:return false;}}});?
完整效果
完整代碼：
package com.example.hellowindow;import android.app.Activity; import android.os.Bundle; import android.os.Handler; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button;public class MainActivity extends Activity {private Handler mHandler = null;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);mHandler = new Handler();Button button = (Button) findViewById(R.id.button);button.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {mHandler.postDelayed(new Runnable() {@Overridepublic void run() {WindowUtils.showPopupWindow(MainActivity.this);}}, 1000 * 3);}});} } package com.example.hellowindow;import android.content.Context; import android.graphics.PixelFormat; import android.graphics.Rect; import android.view.Gravity; import android.view.KeyEvent; import android.view.LayoutInflater; import android.view.MotionEvent; import android.view.View; import android.view.View.OnKeyListener; import android.view.View.OnTouchListener; import android.view.WindowManager; import android.view.View.OnClickListener; import android.view.WindowManager.LayoutParams; import android.widget.Button;/*** 彈窗輔助類** @ClassName WindowUtils***/ public class WindowUtils {private static final String LOG_TAG = "WindowUtils";private static View mView = null;private static WindowManager mWindowManager = null;private static Context mContext = null;public static Boolean isShown = false;/*** 顯示彈出框** @param context* @param view*/public static void showPopupWindow(final Context context) {if (isShown) {LogUtil.i(LOG_TAG, "return cause already shown");return;}isShown = true;LogUtil.i(LOG_TAG, "showPopupWindow");// 獲取應用的ContextmContext = context.getApplicationContext();// 獲取WindowManagermWindowManager = (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE);mView = setUpView(context);final WindowManager.LayoutParams params = new WindowManager.LayoutParams();// 類型params.type = WindowManager.LayoutParams.TYPE_SYSTEM_ALERT;// WindowManager.LayoutParams.TYPE_SYSTEM_ALERT// 設置flagint flags = WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM;// | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;// 如果設置了WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE，彈出的View收不到Back鍵的事件params.flags = flags;// 不設置這個彈出框的透明遮罩顯示為黑色params.format = PixelFormat.TRANSLUCENT;// FLAG_NOT_TOUCH_MODAL不阻塞事件傳遞到后面的窗口// 設置 FLAG_NOT_FOCUSABLE 懸浮窗口較小時，后面的應用圖標由不可長按變為可長按// 不設置這個flag的話，home頁的劃屏會有問題 params.width = LayoutParams.MATCH_PARENT;params.height = LayoutParams.MATCH_PARENT;params.gravity = Gravity.CENTER;mWindowManager.addView(mView, params);LogUtil.i(LOG_TAG, "add view");}/*** 隱藏彈出框*/public static void hidePopupWindow() {LogUtil.i(LOG_TAG, "hide " + isShown + ", " + mView);if (isShown && null != mView) {LogUtil.i(LOG_TAG, "hidePopupWindow");mWindowManager.removeView(mView);isShown = false;}}private static View setUpView(final Context context) {LogUtil.i(LOG_TAG, "setUp view");View view = LayoutInflater.from(context).inflate(R.layout.popupwindow,null);Button positiveBtn = (Button) view.findViewById(R.id.positiveBtn);positiveBtn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {LogUtil.i(LOG_TAG, "ok on click");// 打開安裝包// 隱藏彈窗 WindowUtils.hidePopupWindow();}});Button negativeBtn = (Button) view.findViewById(R.id.negativeBtn);negativeBtn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {LogUtil.i(LOG_TAG, "cancel on click");WindowUtils.hidePopupWindow();}});// 點擊窗口外部區域可消除// 這點的實現主要將懸浮窗設置為全屏大小，外層有個透明背景，中間一部分視為內容區域// 所以點擊內容區域外部視為點擊懸浮窗外部final View popupWindowView = view.findViewById(R.id.popup_window);// 非透明的內容區域 view.setOnTouchListener(new OnTouchListener() {@Overridepublic boolean onTouch(View v, MotionEvent event) {LogUtil.i(LOG_TAG, "onTouch");int x = (int) event.getX();int y = (int) event.getY();Rect rect = new Rect();popupWindowView.getGlobalVisibleRect(rect);if (!rect.contains(x, y)) {WindowUtils.hidePopupWindow();}LogUtil.i(LOG_TAG, "onTouch : " + x + ", " + y + ", rect: "+ rect);return false;}});// 點擊back鍵可消除view.setOnKeyListener(new OnKeyListener() {@Overridepublic boolean onKey(View v, int keyCode, KeyEvent event) {switch (keyCode) {case KeyEvent.KEYCODE_BACK:WindowUtils.hidePopupWindow();return true;default:return false;}}});return view;} }?
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總結
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