WindowManager.LayoutParams（2）

系列主要用于设置window的brightness(screenBrightness/buttonBrightness)。我们可以通过WindowManager.LayoutParams的screenBrightness/buttonBrightness变量直接进行设置。
其中screenBrightness表示屏幕的brightness,而buttonBrightness表示一般按键和键盘按键的brightness
float BRIGHTNESS_OVERRIDE_FULLValue 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)设置到最高值。
float BRIGHTNESS_OVERRIDE_NONEDefault value for screenBrightness and buttonBrightness indicating that the brightness value is not overridden for this window and normal brightness policy should be used.
不对brightness(screenBrightness/buttonBrightness)重新进行设置，采用默认的普通值。
float BRIGHTNESS_OVERRIDE_OFFValue 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)设置到最低值。
changed系列
该系列主要用于 int copyFrom (WindowManager.LayoutParams o)函数中。
在函数中，首先将用参数中传入的WindowManager.LayoutParams的信息复制到本WindowManager.LayoutParams中，然后返回一个整数，以bite形式表示调用该函数后WindowManager.LayoutParams的哪些信息发送了变化
int ALPHA_CHANGED用于表示成员变量alpha是否被改变
int ANIMATION_CHANGED用于表示成员变量windowAnimations是否被改变
int DIM_AMOUNT_CHANGED用于表示成员变量dimAmount是否被改变
int FLAGS_CHANGED用于表示成员变量flags是否被改变
int LAYOUT_CHANGED用于表示layout是否被改变.这里的layout是指以下变量所包含的信息：
width，height,x,y, verticalMargin，verticalWeight,horizontalMargin，horizontalWeight
int SCREEN_BRIGHTNESS_CHANGED用于表示brightness是否被改变.
这里的brightness是指以下变量对应的信息：screenBrightness，buttonBrightness
int SCREEN_ORIENTATION_CHANGED用于表示成员变量screenOrientation是否被改变
int SOFT_INPUT_MODE_CHANGED用于表示成员变量softInputMode是否被改变
int TITLE_CHANGED用于表示成员变量title是否被改变
int TYPE_CHANGED用于表示成员变量type是否被改变
int FORMAT_CHANGEDConstant Value: 8 (0x00000008)
用于表示成员变量format是否被改变
成员变量
继承于ViewGroup.LayoutParams的成员变量
public int heightInformation about how tall the view wants to be.
public LayoutAnimationController.AnimationParameterslayoutAnimationParameters Used to animate layouts.
public int widthInformation about how wide the view wants to be.
自身的成员变量
public static final Creator<<A style="COLOR: rgb(0,102,153); TEXT-DECORATION: none" href="http://developer.android.com/reference/android/view/WindowManager.LayoutParams.html" rel=nofollow>WindowManager.LayoutParams>CREATOR
public float alphaAn alpha value to apply to this entire window.
public float buttonBrightnessThis can be used to override the standard behavior of the button and keyboard backlights.
public float dimAmountWhen FLAG_DIM_BEHIND is set, this is the amount of dimming to apply.
public int flagsVarious behavioral options/flags.
public int formatThe desired bitmap format.
public int gravityPlacement of window within the screen as per Gravity.
public float horizontalMarginThe horizontal margin, as a percentage of the container's width, between the container and the widget.
public float horizontalWeightIndicates how much of the extra space will be allocated horizontally to the view associated with these LayoutParams.
public int memoryTypeThis field is deprecated. this is ignored
public String packageNameName of the package owning this window.
public float screenBrightnessThis can be used to override the user's preferred brightness of the screen.
public int screenOrientationSpecific orientation value for a window.
public int softInputModeDesired operating mode for any soft input area.
public int systemUiVisibilityControl the visibility of the status bar.
public IBinder tokenIdentifier for this window.
public int typeThe general type of window.
public float verticalMarginThe vertical margin, as a percentage of the container's height, between the container and the widget.
public float verticalWeightIndicates how much of the extra space will be allocated vertically to the view associated with these LayoutParams.
public int windowAnimationsA 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.
成员函数
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.