分析windowManager中添加一个悬浮框的方式
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WindowManager.LayoutParams
params
=
new
LayoutParams();
params
.width = width;
params
.height = height;
params
.format = PixelFormat.TRANSLUCENT;
params
.type = WindowManager.LayoutParams.TYPE_APPLICATION_ATTACHED_DIALOG;
params
.flags = WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL;
//后面窗口仍然可以处理点设备事件
params
.setTitle(
"Toast"
);
params
.gravity = gravity;
params
.windowAnimations = styleAnimations;
WindowManager windowManager = (WindowManager)context.getSystemService(Context.WINDOW_SERVICE);
TextView
float
=
new
TextView(context);
float
.settext(
"this is a float window "
);
windowManager.addView(view,
this
.mLayoutParams)
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type 的取值：
应用程序窗口。
public
static
final
int
FIRST_APPLICATION_WINDOW = 1;
所有程序窗口的“基地”窗口，其他应用程序窗口都显示在它上面。
public
static
final
int
TYPE_BASE_APPLICATION =1;
普通应用功能程序窗口。token必须设置为Activity的token，以指出该窗口属谁。
public
static
final
int
TYPE_APPLICATION = 2;
用于应用程序启动时所显示的窗口。应用本身不要使用这种类型。
它用于让系统显示些信息，直到应用程序可以开启自己的窗口。
public
static
final
int
TYPE_APPLICATION_STARTING = 3;
应用程序窗口结束。
public
static
final
int
LAST_APPLICATION_WINDOW = 99;
子窗口。子窗口的Z序和坐标空间都依赖于他们的宿主窗口。
public
static
final
int
FIRST_SUB_WINDOW = 1000;
面板窗口，显示于宿主窗口上层。
public
static
final
int
TYPE_APPLICATION_PANEL = FIRST_SUB_WINDOW;
媒体窗口，例如视频。显示于宿主窗口下层。
public
static
final
int
TYPE_APPLICATION_MEDIA = FIRST_SUB_WINDOW+1;
应用程序窗口的子面板。显示于所有面板窗口的上层。（GUI的一般规律，越“子”越靠上）
public
static
final
int
TYPE_APPLICATION_SUB_PANEL = FIRST_SUB_WINDOW +2;
对话框。类似于面板窗口，绘制类似于顶层窗口，而不是宿主的子窗口。
public
static
final
int
TYPE_APPLICATION_ATTACHED_DIALOG = FIRST_SUB_WINDOW +3;
媒体信息。显示在媒体层和程序窗口之间，需要实现透明（半透明）效果。（例如显示字幕）
public
static
final
int
TYPE_APPLICATION_MEDIA_OVERLAY = FIRST_SUB_WINDOW +4;
子窗口结束。（ End of types of sub-windows ）
public
static
final
int
LAST_SUB_WINDOW = 1999;
系统窗口。非应用程序创建。
public
static
final
int
FIRST_SYSTEM_WINDOW = 2000;
状态栏。只能有一个状态栏；它位于屏幕顶端，其他窗口都位于它下方。
public
static
final
int
TYPE_STATUS_BAR = FIRST_SYSTEM_WINDOW;
搜索栏。只能有一个搜索栏；它位于屏幕上方。
public
static
final
int
TYPE_SEARCH_BAR = FIRST_SYSTEM_WINDOW+1;
电话窗口。它用于电话交互（特别是呼入）。它置于所有应用程序之上，状态栏之下。
public
static
final
int
TYPE_PHONE = FIRST_SYSTEM_WINDOW+2;
系统提示。它总是出现在应用程序窗口之上。
public
static
final
int
TYPE_SYSTEM_ALERT = FIRST_SYSTEM_WINDOW +3;
锁屏窗口。
public
static
final
int
TYPE_KEYGUARD = FIRST_SYSTEM_WINDOW +4;
信息窗口。用于显示toast。
public
static
final
int
TYPE_TOAST = FIRST_SYSTEM_WINDOW +5;
系统顶层窗口。显示在其他一切内容之上。此窗口不能获得输入焦点，否则影响锁屏。
public
static
final
int
TYPE_SYSTEM_OVERLAY = FIRST_SYSTEM_WINDOW +6;
电话优先，当锁屏时显示。此窗口不能获得输入焦点，否则影响锁屏。
public
static
final
int
TYPE_PRIORITY_PHONE = FIRST_SYSTEM_WINDOW +7;
系统对话框。（例如音量调节框）。
public
static
final
int
TYPE_SYSTEM_DIALOG = FIRST_SYSTEM_WINDOW +8;
锁屏时显示的对话框。
public
static
final
int
TYPE_KEYGUARD_DIALOG = FIRST_SYSTEM_WINDOW +9;
系统内部错误提示，显示于所有内容之上。
public
static
final
int
TYPE_SYSTEM_ERROR = FIRST_SYSTEM_WINDOW +10;
内部输入法窗口，显示于普通UI之上。应用程序可重新布局以免被此窗口覆盖。
public
static
final
int
TYPE_INPUT_METHOD = FIRST_SYSTEM_WINDOW +11;
内部输入法对话框，显示于当前输入法窗口之上。
public
static
final
int
TYPE_INPUT_METHOD_DIALOG= FIRST_SYSTEM_WINDOW +12;
墙纸窗口。
public
static
final
int
TYPE_WALLPAPER = FIRST_SYSTEM_WINDOW +13;
状态栏的滑动面板。
public
static
final
int
TYPE_STATUS_BAR_PANEL = FIRST_SYSTEM_WINDOW +14;
系统窗口结束。
public
static
final
int
LAST_SYSTEM_WINDOW = 2999;
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这里需要注意的地方是：
对于需要依附于activity的选择2000以下的，独立于activity，使用2002
2.对于flag，这里详细的说明
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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_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_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.
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3.对于windowAnimation
很多人说为什么我设置了windowAnimation，但是没有动画效果呢？
这里一定要注意，这里需要使用style，在style中添加如下：
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然后将style的resourceId赋给params.windowAnimation,如果是将动画的resourceId赋值给params.windowAnimation，死也看得不到动画效果滴。