Hi, I'm trying to get a vertical seekbar going with the emulator, but I'm sort of stuck. I can get the seekbar to display the way I want it to, and I can get the progress to do what I want, and I can modify the onTouchEvent to get the thumb to go vertically instead of horizontally. What I can't do is get the thumb to move outside of the default 29 horizontal pixels without using setThumbOffset(). This in itself isn't a problem. The problem is coming from the fact that I don't understand the thumbOffset at all -- I guess.I suspect I'm just not familar enough with developing UIs. I think I could resize the widget, which I am pretty sure I'm not doing right. Or maybe I could just use the thumbOffset if I could figure it out. Since I can calculate the progress correctly I thought I would just use a linear function of progress * (getTop() - getBottom()) of the widget but that doesn't seem to do it. But I can't figure out what the offset is centered around.
As a somewhat aside, I am really unsure if what I am doing in onSizeChanged() is sane or if it's going to bite me in the ass later one. Here's the main.xml layout and the class (ignore the debugging junk): <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/ android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" > <com.mobilsemantic.mobipoll.SlideBar android:id="@+id/slide" android:layout_width="wrap_content" android:layout_height="fill_parent" android:max="100" android:progress="0" android:secondaryProgress="25" /> <Button android:id="@+id/button" android:layout_width="fill_parent" android:layout_height="fill_parent" android:text="Hello, I am a Button" /> <TextView android:id="@+id/tracking" android:layout_width="fill_parent" android:layout_height="wrap_content" /> </LinearLayout> import android.content.Context; import android.graphics.Canvas; import android.util.AttributeSet; import android.util.Log; import android.view.MotionEvent; import android.view.View; import android.widget.SeekBar; public class SlideBar extends SeekBar { private int oHeight = 320, oWidth = 29; private int oProgress = -1, oOffset = -1;; private float xPos = -1, yPos = -1; private int top = -1, bottom = -1, left = -1, right = -1; public SlideBar(Context context) { super(context); } public SlideBar(Context context, AttributeSet attrs) { super(context, attrs); oOffset = this.getThumbOffset(); oProgress = this.getProgress(); } public SlideBar(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); } protected synchronized void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { int height = View.MeasureSpec.getSize(heightMeasureSpec); oHeight = height; this.setMeasuredDimension(oWidth, oHeight); } protected void onSizeChanged(int w, int h, int oldw, int oldh) { super.onSizeChanged(h, w, oldw, oldh); } protected void onLayout(boolean changed, int l, int t, int r, int b) { super.onLayout(changed, l, t, r, b); left = l; right = r; top = t; bottom = b; } protected void onDraw(Canvas c) { c.rotate(90); c.translate(0,-29); super.onDraw(c); } public boolean onTouchEvent(MotionEvent event) { xPos = event.getX(); yPos = event.getY(); float progress = (yPos-this.getTop())/(this.getBottom()-this.getTop ()); oOffset = this.getThumbOffset(); oProgress = this.getProgress(); Log.d("offset" + System.nanoTime(), new Integer(oOffset).toString ()); Log.d("progress" + System.nanoTime(), new Integer(oProgress).toString ()); float offset; offset = progress * (this.getBottom()-this.getTop()); this.setThumbOffset((int)offset); Log.d("offset_postsetprogress" + System.nanoTime(), new Integer (oOffset).toString()); Log.d("progress_postsetprogress" + System.nanoTime(), new Integer (oProgress).toString()); this.setProgress((int)(100*event.getY()/this.getBottom())); return true; } } If anybody could give me a hand or give me a few pointers towards getting this vertical seekbar going better, I'd be eternally grateful. Neil On Feb 11, 6:38 pm, Dianne Hackborn <[email protected]> wrote: > Probably copying the seek bar code and modifying it to work how you want. > > On Wed, Feb 11, 2009 at 2:37 PM, Jared <[email protected]> wrote: > > > I am still interested in solving this. Does anyone have an idea on how > > to accomplish this? > > > On Feb 8, 2:00 pm, Jared <[email protected]> wrote: > > > Is it possible to have a vertical SeekBar? I would want this for a > > > tilt control slider. > > -- > Dianne Hackborn > Android framework engineer > [email protected] > > Note: please don't send private questions to me, as I don't have time to > provide private support. All such questions should be posted on public > forums, where I and others can see and answer them. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
