"Android" Scrollview related issues summary

Remove ScrollView sliding boundary gradient color

The scroll bar is removed and the boundary does not turn gray when sliding

< Horizontalscrollview      Android:overscrollmode = "Never"     android:background= "@null"    android:scrollbars= "None"     Android:fadingedge= "None"/>

ScrollView Initialize the position of the anchor scroll bar
Call Mhandler.post (Mscrollview) where needed;

Private New Runnable () {      @Override      publicvoid  run () {            Scrollview.scrollto (10 , 30); // change the position  of the scroll bar     }    };  

Scroll Bar Properties Detailed

Tag:android scroll bar disappears

Property name	Describe
Android:background	Sets the background color / background picture. You can set the background to transparent in the following two ways:"@android: color/transparent" and "@ Null". Note that TextView is transparent by default and does not have to write this property, but buttom/imagebutton/imageview If you want to be transparent, you have to write this attribute.
Android:clickable	Whether to respond to click events.
Android:contentdescription	Set The Note description for the view as an accessibility feature that provides instructions for some view without a text description , such as ImageButton. There is no effect on the interface, you control the program, you can temporarily put a bit of string data.
Android:drawingcachequality	Sets the translucent quality when drawing. The following values can be set:auto(by default, as determined by the framework)/high(high quality, use higher color depth, consumes more memory)/low (Low quality, use a lower color depth, but with less memory).
Android:duplicateparentstate	If this property is set, the drawing state is obtained directly from the parent container (cursor, press inferior). See the Code section below, note that according to the current test situation is just to get the drawing state, and not get the event, that is, you click on the linearlayout Button has clicked effect, but do not perform the Click event.
Android:fadingedge	Sets the direction in which the border gradient is placed when the scrollbar is drawn. None (The border color does not change), Horizontal (The horizontal direction color is dimmed), Vertical (the color in the vertical direction is dimmed). Refer to the fadingedgelength
Android:fadingedgelength	Sets the length of the border gradient.
Android:fitssystemwindows	Whether to consider system windows (such as status bar) when setting layout adjustments
Android:focusable	Sets whether to get focus. If a requestfocus () is called, the latter is treated preferentially. Note In the form that you want to set a certain one, such as EditText get focus, light setting this is not possible, need to put this EditText front Focusable are set to false . to get focus in Touch mode, set focusableintouchmode to true.
Android:focusableintouchmode	Sets whether View can get focus in Touch mode .
Android:hapticfeedbackenabled	Sets whether to accept other touch feedback events on a regular basis. Here the simulator has no effect, is it a multi-touch? Can not find information to find performhapticfeedback or hapticfeedback This keyword information to see.
Android:id	sets a unique number in the current layout.xml for the current View , either by calling View.findviewbyid () or Activity.findviewbyid () finds the corresponding View according to this number . There is no conflict between different Layout.xml that define the same ID . Format such as "@+id/btnname"
Android:isscrollcontainer	Sets the current View as a scrolling container. There is no test effect here,Listview/gridview/scrollview does not have to set this property at all, and edidtext settings the android:scrollbars can also be scrolled.
Android:keepscreenon	whether the View remains awake in the visible case. This property is often used in linearlayout , but the emulator has no effect here.
Android:longclickable	Sets whether to respond to long press events .
Android:minheight	Set the view minimum height
Android:minwidth	Set the minimum width of a view
Android:nextfocusdown	Set below Specifies that the view gets the next focus. Focus movement is based on an algorithm that looks for the nearest neighbor in a given direction. If the specified view does not exist, the run-time error is reported when the focus is moved. You can set imeoptions= actiondoneso that you skip to the next focus when you finish typing.
Android:nextfocusleft	Set left Specifies that the view gets the next focus.
Android:nextfocusright	Set Right Specifies that the view gets the next focus.
Android:nextfocusup	Set above Specifies that the view gets the next focus.
Android:onclick	Invokes the specified method from the context when clicked. Here you specify a method name, typically in Activity that defines a function that conforms to the following parameters and return values and assigns the method name string to that value: public void OnClickButton (view view) android:onclick=" onclickbutton"
Android:padding	Sets the margin around the top and bottom, padding the blanks in pixels.
Android:paddingbottom	Sets the bottom margin, in pixels, to fill in the blanks.
Android:paddingleft	Sets the left margin, in pixels, to fill in the blanks.
Android:paddingright	Sets the right margin, in pixels, to fill in the blanks. .
Android:paddingtop	Sets the top margin, in pixels, to fill in the blanks.
Android:saveenabled	Sets whether to save the View 's data when the window freezes (such as rotating the screen), by default, but only if you need to set the ID to save automatically, see here .
Android:scrollx	Sets the offset value of the horizontal scrolling in pixels, which is the effect that can be seen in the GridView.
Android:scrolly	Sets the offset value for vertical scrolling in pixels
Android:scrollbaralwaysdrawhorizontaltrack	Sets whether the horizontal scroll bar is always displayed. Here with ScrollView,theListView test has no effect.
Android:scrollbaralwaysdrawverticaltrack	Sets whether the vertical scroll bar is always displayed. Here with ScrollView,theListView test has no effect.
Android:scrollbardefaultdelaybeforefade	Sets the N milliseconds after which to begin the fade, in milliseconds.
Android:scrollbarfadeduration	Sets the time, in milliseconds, that the scrollbar fade out effect (from having to slowly fade to vanishing). Android2.2 the scroll bar will disappear after scrolling, and then the scroll will come out, 1.5 , 1.6 The version will always be displayed.
Android:scrollbarsize	Sets the width of the scroll bar.
Android:scrollbarstyle	Sets the style and position of the scroll bar. Setting values:insideoverlay,insideinset,outsideoverlay, Outsideinset. There are not too many effects, the following is outsideoverlay and outsideinset effect comparison:
Android:scrollbarthumbhorizontal	Sets the drawable(such as color) of the horizontal scroll bar.
Android:scrollbarthumbvertical	Sets the drawable(such as color)of the vertical scroll bar.
Android:scrollbartrackhorizontal	Sets the color drawable(such as color) of the horizontal scroll bar background (track)
android:scrollbartrackvertical	set vertical scroll bar background (trajectory) drawable Note Setting the color values directly such as " android:color/white " will result in a very difficult effect, even if you do not understand this property, Here you can see apidemos res/drawable/ scrollbar_vertical_thumb.xml and Scrollbar_vertical_track.xml , the setting code is: android:scrollbartrackvertical = "@drawable/scrollbar_vertical_track"
Android:scrollbars	Sets the scroll bar display. None (hidden), Horizontal (horizontal), Vertical (vertical). See the following code to demonstrate using this property to have a scrollbar inside the EditText. However, other containers such as LinearLayout are set but have no effect.
Android:soundeffectsenabled	Set whether you have sound effects when tapping or touching
Android:tag	Sets a text label. The View that contains the tag string can be retrieved by View.gettag () or for with View.findviewwithtag () . However , it is generally better to query the Viewby ID because it is faster and allows compile-time type checking.
Android:visibility	Sets whether the viewis displayed. Set Value:visible(default value