悬浮View，可拖动，放手后自动吸附到屏幕边上。

int anim abc_fade_in 0x0 int anim abc_fade_out 0x0 int anim abc_grow_fade_in_from_bottom 0x0 int anim abc_popup_enter 0x0 int anim abc_popup_exit 0x0 int anim abc_shrink_fade_out_from_bottom 0x0 int anim abc_slide_in_bottom 0x0 int anim abc_slide_in_top 0x0 int anim abc_slide_out_bottom 0x0 int anim abc_slide_out_top 0x0 int anim abc_tooltip_enter 0x0 int anim abc_tooltip_exit 0x0 int attr actionBarDivider 0x0 int attr actionBarItemBackground 0x0 int attr actionBarPopupTheme 0x0 int attr actionBarSize 0x0 int attr actionBarSplitStyle 0x0 int attr actionBarStyle 0x0 int attr actionBarTabBarStyle 0x0 int attr actionBarTabStyle 0x0 int attr actionBarTabTextStyle 0x0 int attr actionBarTheme 0x0 int attr actionBarWidgetTheme 0x0 int attr actionButtonStyle 0x0 int attr actionDropDownStyle 0x0 int attr actionLayout 0x0 int attr actionMenuTextAppearance 0x0 int attr actionMenuTextColor 0x0 int attr actionModeBackground 0x0 int attr actionModeCloseButtonStyle 0x0 int attr actionModeCloseDrawable 0x0 int attr actionModeCopyDrawable 0x0 int attr actionModeCutDrawable 0x0 int attr actionModeFindDrawable 0x0 int attr actionModePasteDrawable 0x0 int attr actionModePopupWindowStyle 0x0 int attr actionModeSelectAllDrawable 0x0 int attr actionModeShareDrawable 0x0 int attr actionModeSplitBackground 0x0 int attr actionModeStyle 0x0 int attr actionModeWebSearchDrawable 0x0 int attr actionOverflowButtonStyle 0x0 int attr actionOverflowMenuStyle 0x0 int attr actionProviderClass 0x0 int attr actionViewClass 0x0 int attr activityChooserViewStyle 0x0 int attr alertDialogButtonGroupStyle 0x0 int attr alertDialogCenterButtons 0x0 int attr alertDialogStyle 0x0 int attr alertDialogTheme 0x0 int attr allowStacking 0x0 int attr alpha 0x0 int attr alphabeticModifiers 0x0 int attr arrowHeadLength 0x0 int attr arrowShaftLength 0x0 int attr autoCompleteTextViewStyle 0x0 int attr autoSizeMaxTextSize 0x0 int attr autoSizeMinTextSize 0x0 int attr autoSizePresetSizes 0x0 int attr autoSizeStepGranularity 0x0 int attr autoSizeTextType 0x0 int attr background 0x0 int attr backgroundSplit 0x0 int attr backgroundStacked 0x0 int attr backgroundTint 0x0 int attr backgroundTintMode 0x0 int attr barLength 0x0 int attr borderlessButtonStyle 0x0 int attr buttonBarButtonStyle 0x0 int attr buttonBarNegativeButtonStyle 0x0 int attr buttonBarNeutralButtonStyle 0x0 int attr buttonBarPositiveButtonStyle 0x0 int attr buttonBarStyle 0x0 int attr buttonGravity 0x0 int attr buttonIconDimen 0x0 int attr buttonPanelSideLayout 0x0 int attr buttonStyle 0x0 int attr buttonStyleSmall 0x0 int attr buttonTint 0x0 int attr buttonTintMode 0x0 int attr checkboxStyle 0x0 int attr checkedTextViewStyle 0x0 int attr closeIcon 0x0 int attr closeItemLayout 0x0 int attr collapseContentDescription 0x0 int attr collapseIcon 0x0 int attr color 0x0 int attr colorAccent 0x0 int attr colorBackgroundFloating 0x0 int attr colorButtonNormal 0x0 int attr colorControlActivated 0x0 int attr colorControlHighlight 0x0 int attr colorControlNormal 0x0 int attr colorError 0x0 int attr colorPrimary 0x0 int attr colorPrimaryDark 0x0 int attr colorSwitchThumbNormal 0x0 int attr commitIcon 0x0 int attr contentDescription 0x0 int attr contentInsetEnd 0x0 int attr contentInsetEndWithActions 0x0 int attr contentInsetLeft 0x0 int attr contentInsetRight 0x0 int attr contentInsetStart 0x0 int attr contentInsetStartWithNavigation 0x0 int attr controlBackground 0x0 int attr coordinatorLayoutStyle 0x0 int attr customNavigationLayout 0x0 int attr defaultQueryHint 0x0 int attr dialogCornerRadius 0x0 int attr dialogPreferredPadding 0x0 int attr dialogTheme 0x0 int attr displayOptions 0x0 int attr divider 0x0 int attr dividerHorizontal 0x0 int attr dividerPadding 0x0 int attr dividerVertical 0x0 int attr drawableSize 0x0 int attr drawerArrowStyle 0x0 int attr dropDownListViewStyle 0x0 int attr dropdownListPreferredItemHeight 0x0 int attr editTextBackground 0x0 int attr editTextColor 0x0 int attr editTextStyle 0x0 int attr elevation 0x0 int attr expandActivityOverflowButtonDrawable 0x0 int attr firstBaselineToTopHeight 0x0 int attr font 0x0 int attr fontFamily 0x0 int attr fontProviderAuthority 0x0 int attr fontProviderCerts 0x0 int attr fontProviderFetchStrategy 0x0 int attr fontProviderFetchTimeout 0x0 int attr fontProviderPackage 0x0 int attr fontProviderQuery 0x0 int attr fontStyle 0x0 int attr fontVariationSettings 0x0 int attr fontWeight 0x0 int attr gapBetweenBars 0x0 int attr goIcon 0x0 int attr height 0x0 int attr hideOnContentScroll 0x0 int attr homeAsUpIndicator 0x0 int attr homeLayout 0x0 int attr icon 0x0 int attr iconTint 0x0 int attr iconTintMode 0x0 int attr iconifiedByDefault 0x0 int attr imageButtonStyle 0x0 int attr indeterminateProgressStyle 0x0 int attr initialActivityCount 0x0 int attr isLightTheme 0x0 int attr itemPadding 0x0 int attr keylines 0x0 int attr lastBaselineToBottomHeight 0x0 int attr layout 0x0 int attr layout_anchor 0x0 int attr layout_anchorGravity 0x0 int attr layout_behavior 0x0 int attr layout_dodgeInsetEdges 0x0 int attr layout_insetEdge 0x0 int attr layout_keyline 0x0 int attr lineHeight 0x0 int attr listChoiceBackgroundIndicator 0x0 int attr listDividerAlertDialog 0x0 int attr listItemLayout 0x0 int attr listLayout 0x0 int attr listMenuViewStyle 0x0 int attr listPopupWindowStyle 0x0 int attr listPreferredItemHeight 0x0 int attr listPreferredItemHeightLarge 0x0 int attr listPreferredItemHeightSmall 0x0 int attr listPreferredItemPaddingLeft 0x0 int attr listPreferredItemPaddingRight 0x0 int attr logo 0x0 int attr logoDescription 0x0 int attr maxButtonHeight 0x0 int attr measureWithLargestChild 0x0 int attr multiChoiceItemLayout 0x0 int attr navigationContentDescription 0x0 int attr navigationIcon 0x0 int attr navigationMode 0x0 int attr numericModifiers 0x0 int attr overlapAnchor 0x0 int attr paddingBottomNoButtons 0x0 int attr paddingEnd 0x0 int attr paddingStart 0x0 int attr paddingTopNoTitle 0x0 int attr panelBackground 0x0 int attr panelMenuListTheme 0x0 int attr panelMenuListWidth 0x0 int attr popupMenuStyle 0x0 int attr popupTheme 0x0 int attr popupWindowStyle 0x0 int attr preserveIconSpacing 0x0 int attr progressBarPadding 0x0 int attr progressBarStyle 0x0 int attr queryBackground 0x0 int attr queryHint 0x0 int attr radioButtonStyle 0x0 int attr ratingBarStyle 0x0 int attr ratingBarStyleIndicator 0x0 int attr ratingBarStyleSmall 0x0 int attr searchHintIcon 0x0 int attr searchIcon 0x0 int attr searchViewStyle 0x0 int attr seekBarStyle 0x0 int attr selectableItemBackground 0x0 int attr selectableItemBackgroundBorderless 0x0 int attr showAsAction 0x0 int attr showDividers 0x0 int attr showText 0x0 int attr showTitle 0x0 int attr singleChoiceItemLayout 0x0 int attr spinBars 0x0 int attr spinnerDropDownItemStyle 0x0 int attr spinnerStyle 0x0 int attr splitTrack 0x0 int attr srcCompat 0x0 int attr state_above_anchor 0x0 int attr statusBarBackground 0x0 int attr subMenuArrow 0x0 int attr submitBackground 0x0 int attr subtitle 0x0 int attr subtitleTextAppearance 0x0 int attr subtitleTextColor 0x0 int attr subtitleTextStyle 0x0 int attr suggestionRowLayout 0x0 int attr switchMinWidth 0x0 int attr switchPadding 0x0 int attr switchStyle 0x0 int attr switchTextAppearance 0x0 int attr textAllCaps 0x0 int attr textAppearanceLargePopupMenu 0x0 int attr textAppearanceListItem 0x0 int attr textAppearanceListItemSecondary 0x0 int attr textAppearanceListItemSmall 0x0 int attr textAppearancePopupMenuHeader 0x0 int attr textAppearanceSearchResultSubtitle 0x0 int attr textAppearanceSearchResultTitle 0x0 int attr textAppearanceSmallPopupMenu 0x0 int attr textColorAlertDialogListItem 0x0 int attr textColorSearchUrl 0x0 int attr theme 0x0 int attr thickness 0x0 int attr thumbTextPadding 0x0 int attr thumbTint 0x0 int attr thumbTintMode 0x0 int attr tickMark 0x0 int attr tickMarkTint 0x0 int attr tickMarkTintMode 0x0 int attr tint 0x0 int attr tintMode 0x0 int attr title 0x0 int attr titleMargin 0x0 int attr titleMarginBottom 0x0 int att