[英]VerticalSeekbar not working smoothly in horizontal scroll-view
I am trying to implement a vertical seekbar in a horizontal scroll-view, 我正在尝试在水平滚动视图中实现垂直搜索栏,
but the seekbar is not working smoothly in it. 但是搜索栏无法在其中顺利运行。
This is my class for vertical sekkbar .....Source from stackoverflow only . 这是我的垂直sekkbar类..... Source仅来自stackoverflow。
public class VerticalSeekBar extends SeekBar {
public VerticalSeekBar(Context context) {
super(context);
}
public VerticalSeekBar(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
public VerticalSeekBar(Context context, AttributeSet attrs) {
super(context, attrs);
}
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(h, w, oldh, oldw);
}
@Override
protected synchronized void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(heightMeasureSpec, widthMeasureSpec);
setMeasuredDimension(getMeasuredHeight(), getMeasuredWidth());
}
protected void onDraw(Canvas c) {
c.rotate(-90);
c.translate(-getHeight(), 0);
super.onDraw(c);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
if (!isEnabled()) {
return false;
}
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
case MotionEvent.ACTION_MOVE:
case MotionEvent.ACTION_UP:
setProgress(getMax() - (int) (getMax() * event.getY() / getHeight()));
onSizeChanged(getWidth(), getHeight(), 0, 0);
break;
case MotionEvent.ACTION_CANCEL:
break;
}
return true;
}
}
This is the way i am implementing seekbar . 这就是我实现seekbar的方式。
seekbar3.setMax(5000);
seekbar3.setProgress(mEqualizer.getBandLevel(band));
seekbar3.setFocusable(false);
seekbar3.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
horizontalscroll.setOnTouchListener(null);
horizontalscroll.setEnabled(false);
mHandler.removeCallbacks(mUpdateTimeTask);
seekbar3.setProgress(mEqualizer.getBandLevel(band));
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
//horizontalscroll.setEnabled(false);
/*horizontalscroll.setOnTouchListener(new View.OnTouchListener(){
@Override
public boolean onTouch(View v, MotionEvent event) {
return true;
}
});*/
ObjectAnimator animator=ObjectAnimator.ofInt(horizontalscroll, "scrollX",8,8 );
animator.setDuration(2000);
animator.start();
// seekbar3.setProgress(mEqualizer.getBandLevel(band));
mHandler.removeCallbacks(mUpdateTimeTask);
// Enable Scrolling by removing the OnTouchListner
// horizontalscroll.setOnTouchListener(null);
}
@Override
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser) {
mEqualizer.setBandLevel(band, (short)(progress+min));
seekbar3top.setText((progress+min)+"mB");
seekbar3.setProgress(progress);
// seekbar3.onDraw(c)
/* horizontalscroll.setOnTouchListener(new View.OnTouchListener(){
@Override
public boolean onTouch(View v, MotionEvent event) {
return true;
}});*/
}
});
}
Can anyone suggest me how to do in a simple way. 谁能建议我用简单的方法做。 My verticalseekbar doesnt move smoothly like it should move. 我的Verticalseekbar不能平稳移动。 Thanx in advance :) 提前感谢:)
Finally i solved this problem i changed my vertical seekbar class to this 最后,我解决了这个问题,我将垂直搜索栏类更改为
import android.content.Context;
import android.graphics.Canvas;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.widget.SeekBar;
public class VerticalSeekBar extends SeekBar {
private boolean mIsMovingThumb = false;
static private float THUMB_SLOP = 25;
public VerticalSeekBar(Context context) {
super(context);
}
public VerticalSeekBar(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
public VerticalSeekBar(Context context, AttributeSet attrs) {
super(context, attrs);
}
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(h, w, oldh, oldw);
}
@Override
protected synchronized void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(heightMeasureSpec, widthMeasureSpec);
setMeasuredDimension(getMeasuredHeight(), getMeasuredWidth());
}
protected void onDraw(Canvas c) {
c.rotate(-90);
c.translate(-getHeight(), 0);
super.onDraw(c);
}
private boolean isWithinThumb(MotionEvent event) {
final float progress = getProgress();
final float density = this.getResources().getDisplayMetrics().density;
final float height = getHeight();
final float y = event.getY();
final float max = getMax();
if (progress >= max - (int)(max * (y + THUMB_SLOP * density) / height)
&& progress <= max - (int)(max * (y - THUMB_SLOP * density) / height))
return true;
else
return false;
}
@Override
public boolean onTouchEvent(MotionEvent event) {
if (!isEnabled()) {
return false;
}
boolean handled=false;
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
if (isWithinThumb(event)) {
getParent().requestDisallowInterceptTouchEvent(true);
mIsMovingThumb = true;
handled = true;
}
break;
case MotionEvent.ACTION_MOVE:
case MotionEvent.ACTION_UP:
setProgress(getMax() - (int) (getMax() * event.getY() / getHeight()));
onSizeChanged(getWidth(), getHeight(), 0, 0);
if (mIsMovingThumb) {
setProgress(getMax() - (int) (getMax() * event.getY() / getHeight()));
onSizeChanged(getWidth(), getHeight(), 0, 0);
handled = true;
}
break;
case MotionEvent.ACTION_CANCEL:
getParent().requestDisallowInterceptTouchEvent(false);
mIsMovingThumb = false;
handled = true;
break;
}
return true;
}
}
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