Android :: How To Implement Scrollbar With Thumb For Fast Scrolling?
Jun 2, 2010
I need to implement a screen having around 1000 thumbnails. This screen should support gesture based scrolling as well as fast scrolling using a scrollbar with thumb. So if user want to move from page 1 to page 100 he can just drag the thumb and reach there. But there is no such control in Android. There is seek bar but its look and feel is not similar to what I want. I also want to flick and swipe functionality which can be inherited using horizontalscrollbar. So i want to add functionality of horizontal scroolbar as well as of seekbar in my application.
View 1 Replies
May 3, 2010
How can I set custom thumb for fast scroll in listview.
View 2 Replies
View Related
Nov 1, 2010
I want to hide a listview's scrollbar when the listview isn't scrolling and show it when scrolling. I know this can be done very easy by setting "android:fadeScrollbars" as an application style if the API is 5 or newer. But I want the feature to be available on all android devices. So I've implemented the "setOnScrollListener" method, and switched the scrollbar visibility using the setVerticalScrollBarEnabled method. This works great on G2. The problem is that on Motorola Milestone the SCROLL_STATE_IDLE event isn't received when the scrolling stops, and so the scrollbar remains visible.
View 2 Replies
View Related
Aug 21, 2010
However I have got one major problem which is that since getting it I have developed a really painful wrist (no schoolboy humour please). I hold the phone in my right hand and tend to use my right thumb for scrolling, selecting on the screen and pushing the buttons at the bottom. I have developed a persistent stabbing pain over the nobly bit on the right side of my wrist which gets worse after I have been using the phone for a while. Has anyone else had this problem or is it just me getting old?
View 8 Replies
View Related
May 13, 2009
I'm having a little problem with a ListView scrollbar. The scrollbar appears at the side as expected, but how do I get the scrollbar to expand and become controllable in the same way it behaves in the Contact list? Ideally I'd like all the Contacts list functionality for my app - i.e. to allow me to control the scrollbar directly with a finger and to show the first letter of the list elements you're currently scrolled to.
View 6 Replies
View Related
Jan 29, 2009
What is the best way to implement scrolling text (with behavior similar to that of HTML tag 'marquee')??
I've been trying to do this using TextViews + Animations but I'm having troubles primarily because of sizing issues. If my text is long enough that it exceeds the screen width, it won't be drawn completely (it's size will be chopped at screen width). Thus, when I animate it from right to left, only a part of the text will be displayed. This happens if I allow a maximum of 1 line in my TextView, because otherwise it makes the TextView have multiple lines. If I make it horizontally scrollable, the same 'chopped-off' behavior is seen.
I think this happens because the TextView's parent imposes some restrictions on its size. Is there a way to bypass these restrictions so that the TextView is 'drawn' even if parts of it will be off- screen?
If that's not possible, what's an alternative way of implementing this behavior?
View 11 Replies
View Related
Jul 10, 2009
How to implement scrolling animation? I'm ok with setting a simple AlphaAnimation that triggers at scrollTo(...) but what kind of animation is required for one screen to replace another in a sophisticated manner?
View 1 Replies
View Related
Sep 2, 2010
I am new to android, and ended up (have to) ask a question here. Let's make it simple, I simply want to make my own TextView-like (MyView extends View), This is my code:
public class MyView extends View { private Paint mPaint;
private String mText; private Bitmap mBitmap1; private Bitmap mBitmap2;
public MyView(Context context) { super(context); initView(); }
public MyView(Context context, AttributeSet attrs) { super(context, attrs);
initView(); } private final void initView() { mPaint = new Paint(); }
public void setText(String text) { mText = text; }
@Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int measuredWidth = measureWidth(widthMeasureSpec);
if (mBitmap1 == null) initBitmap1(measuredWidth);
int measuredHeight = measureHeight(heightMeasureSpec);
setMeasuredDimension(measuredWidth, measuredHeight);
}
private void initBitmap1(int measuredWidth) {
mBitmap1 = Bitmap.createBitmap(measuredWidth, Fonts.getHeight(), Bitmap.Config.ARGB_4444);
Canvas canvas = new Canvas(mBitmap1 ); canvas.drawText(mText, 0, 0, mPaint);
} private void initBitmap2() {
mBitmap2 = Bitmap.createBitmap(30, Fonts.getHeight(), Bitmap.Config.ARGB_4444);
Canvas canvas = new Canvas(mBitmap2); canvas.drawText(mText, 0, 0, mPaint);
} private int measureWidth(int widthMeasureSpec) {
int measuredWidth = 0; int specWidthMode = MeasureSpec.getMode(widthMeasureSpec);
int specWidthSize = MeasureSpec.getSize(widthMeasureSpec);
if (specWidthMode == MeasureSpec.EXACTLY) { measuredWidth = specWidthSize;
} else { measuredWidth = getWidth(); if (specWidthMode == MeasureSpec.AT_MOST) {
measuredWidth = Math.min(measuredWidth, specWidthSize);
} } return measuredWidth; }
private int measureHeight(int heightMeasureSpec) {
int measuredHeight = 0; int specHeightMode = MeasureSpec.getMode(heightMeasureSpec);
int specHeightSize = MeasureSpec.getSize(heightMeasureSpec);
if (specHeightMode == MeasureSpec.EXACTLY) { measuredHeight = specHeightSize;
} else { measuredHeight = 80; if (specHeightMode == MeasureSpec.AT_MOST) {
measuredHeight = Math.min(measuredHeight, specHeightSize);
} } return measuredHeight;
} @Override protected void onDraw(Canvas canvas) {
super.onDraw(canvas); canvas.drawBitmap(mBitmap1, getLeft(), 0, mPaint);
initBitmap2(); canvas.drawBitmap(mBitmap2, getLeft(), 30, mPaint);
} }
In my code, I populate some numbers of MyView (let's say 20) in a ListActivity. My question is why mBitmap1's order changes randomly while i scroll (up-down) fastly (if I scroll slowly, this problem not occur)? mBitmap2 stays where those should be.
View 1 Replies
View Related
Sep 7, 2010
Ever since I upgraded to 2.2 with Flash 10.1 I have been unable to jump ahead in flash videos on the web. Whenever I click the scrollbar for the video, it just pauses the playback. Even when I fullscreen it and play it without anything else on the screen, I have the same problem. It seems to treat the entire flash player as one object rather than different objects within the player. Anyone else having issues fast forwarding flash video? It worked no problem with Flash-lite on 2.1.
View 7 Replies
View Related
Sep 5, 2010
Do I need to implement a custom thumb Drawable?
View 1 Replies
View Related
Jun 11, 2010
I have set negative paddings on my custom seekbar so that the round thumb image can go outside the bar, but the thumb isn't rendered out there, is there anyway to force the thumb to be drawn outside those bounds Sorry guys, I'm new to Android development, and have been tasked with fixing an existing application. The problem is that we have a custom rounded looking track bar, which consists of two rounded 'end cap' images and a 1 px background that is tiled to create the seekbar. As far as I can tell there was never one image that could be set as the background of a normal SeekBar, which is why a custom one was created. The thumb is a circle and needs to 'fit' into the end caps - the three pieces of the bar are in a relative layout. Right now I'm kind of unclear as to how the 1 px background png gets stretched as the seekbar bg, otherwise I would try to tack on the two endcaps onto that drawable some how?
View 1 Replies
View Related
Oct 16, 2010
I am trying to create a gradient drawable to depict a ratio of something. As a general example, lets say you were looking at a listview containing a fleet of cars. The background could be a fuel gauge - I don't want a smooth, wide transition. I want a very tight transition, and I want to be able to set where that transition takes place.
Here's what I'm staring with, but I'm not getting very far.
CODE:......................
View 1 Replies
View Related
Aug 18, 2010
How to change the rectangular thumb to round thumb in android seek bar?
View 4 Replies
View Related
Feb 24, 2010
Can the application customize the scroll bar colors like the thumb color/image or the background color image.
View 6 Replies
View Related
Apr 3, 2010
I'm creating custom View that shows when necessary scrollbars. already figured out that i need to call initializeScrollbars(TypedArray) method but have no idea how to specify thumb Drawable when my custom View is created at runtime (not from xml layout).
View 4 Replies
View Related
Apr 20, 2010
I'd like to port my iPhone app to Android. The interface is constructed with artwork designed for 320x480 resolution. What steps do I need to take when I'm constructing the XML interface for the Android so that my GUI will be compatible with the different screen sizes (or at least the most popular ones...)?
View 1 Replies
View Related
Nov 5, 2010
I go back and forth about how to name activity classes.Activity seems to imply a verb, like EditContact, for example.But that seems more like what one would call the Intent that triggers EditContact.Should the activity be named ContactEditor instead?
View 2 Replies
View Related
Jul 9, 2010
I am using seek bar to control volume of the device. I am able to change the volume of the device using thumb of the seek bar just by dragging it on touch pad. But when user presses volume(side) keys I need to set seek bar thumb position accordingly.
View 1 Replies
View Related
Aug 4, 2010
How can I connect my USB thumb drive to EVO? Want it to transfer files and extra storage. Is there a wire that enable this connection (mini USB and full USB?)
View 3 Replies
View Related
Jan 24, 2010
is there a way (through javascript/jquery/css) to hide the scrollbar in android's web browser? Can't seem to find any valid info online and things that work for Google Chrome (webkit engine, as well) don't seem to work for the Android's browser.
View 1 Replies
View Related
Aug 24, 2010
The problem appears in Android 2.2. It seems cool because it can auto-hide.But I don't like it quite much because the bar is an indicator for "Whether there is more content not present on the widget". Hiding it maybe neat, but may get the users wrong sometimes. In ListView, I find it a fatal bug at all. When there is more content to show, no scrollbar present, AND when wipe the screen down-wards, no scroolbar appears. Only when use the traceball or Dpad to move focus, there appears the scrollbar. BUT THERE IS WORSE: when you wipe down-wards to move the scrollbar down, nothing happens! The touch feature is almost disabled here.
View 1 Replies
View Related
Oct 29, 2010
I have lot of items on the screen, and I need to use Scrollbar so the user can go down, But the scroll is not visible, How is possible to add scrollbar to a liniearlayout?
View 3 Replies
View Related
Jan 6, 2010
Can anyone help with album covers? I have one album that shows up with its cover in the default music player. I assume that is because it is included in one of the tags information, I added covers to other albums tag info using windows media player and the advanced tagging option (method found in other forum for other lg phone) but the covers still don't show up when I put the albums back on my phone. Does anyone know which tag the music player is reading? There is also a folder (albumthumbs) that showed up on my sd card once I copied the album thats artwork does work to my phone, and in it is a file without an extension (this is obviously the cover for the one working album). Can I add jpgs to that folder or something and how does the album thumb naming convention work?
View 5 Replies
View Related
Mar 11, 2010
i have a custom view, when i want to add a scrollbar to it, i have a problem, i have learn the code of GridViewSpecial(which belong to Gallery) to my code, i found that my app can't resolve android.R.styleable, i search this question in groups, i know it was removed from SDK. so i write a styleable same as SDK in my app's attr.xml, but it wasn't work,i get a nullpointer when my view draw scrollbar.So someone can help me ?how can I add a scrollbar in my custom view ? (I don't want use ScrollView in my APP
View 2 Replies
View Related
Oct 7, 2010
I tried replacing scrollbar image with another drawable,setting scrollbar to a listview,but scrollbar image is appearing very weird,it is stretched vertically. I am setting to list view as android:scrollbarThumbVertical="@drawable/scrollbar" android:scrollbarTrackVertical="@drawable/scrollbar"
Is there any other attribute i need to set to make image appear properly.
View 2 Replies
View Related
May 23, 2010
I made a small webpage with a scrollable div. When I load it in a browser, it works fine. But when I load it in a webview inside Android, it doesn't let me scroll the div. Is there a workaround for this or do I have to use a different design? I am talking about websites like this.
View 1 Replies
View Related
Dec 22, 2009
I want to create the following layout:
Section '1' is linear layout contains imageview and textview
Section '2' is listview with customze items list
I want to place both components under single verticle scrollbar, means i do not want scrollbar only for listview, currently i am achieving following layout through placing things in tableview but i want functionality like listview items..
View 2 Replies
View Related
Nov 16, 2009
How can I autohide scrollbar in ListView? I thought there would be an autohide attribute for ListView but there isn't. What I want to do is scrollbar is hidden at first when I touch the listview, scrollbar appears 2~3 seconds after the touch off, scrollbar disappears again.
View 3 Replies
View Related
Jul 27, 2010
I have a transparent listview with a image as background. Now, i want the scrollbar as transparent too, i.e I must be able to see the background image through this scrollbar too.
View 2 Replies
View Related
Oct 6, 2010
Threre is a unique resquirement for my project.
I need to create a custom scrollbar for a listview.
I can do this task by setting drawable for scrolllbar.But that does not fulfill my requirement.
There are arrows in scrollbar drawable image and when clicked on them,particular list item should get selected.
So I need to use custom scrollbar for this requirement.
View 16 Replies
View Related
