我正在使用android seekBar
作爲相機變焦控制器。我可以使用setProgress以編程方式更改搜索欄:
拖動時,查找欄的作用就像一個魅力,但我想添加一個zoomIn和zoomOut按鈕來增加進度。問題是雙重的。
當我按一下按鈕我有進步其實之前增加
它沒有更新進度條
btn_zoomIn.setOnClickListener(new View.OnClickListener() { public void onClick(View view) { try { zoomCtrl.setProgress(zoomCtrl.getProgress()+1); onProgressChanged(zoomCtrl, zoomCtrl.getProgress(), true); } catch(Exception ex) { } } }); btn_zoomOut.setOnClickListener(new View.OnClickListener() { public void onClick(View view) { try { zoomCtrl.setProgress(zoomCtrl.getProgress()-1); } catch(Exception ex){ } } });
上拖動拇指點擊4次任何人都可以幫忙嗎?
此外:
這是我使用的,而不是搜索欄的verticalSeekBar類:
public class VerticalSeekBar extends SeekBar {
/**
* Instantiates a new vertical seek bar.
*
* @param context the context
*/
public VerticalSeekBar(Context context) {
super(context);
}
/**
* Instantiates a new vertical seek bar.
*
* @param context the context
* @param attrs the attrs
* @param defStyle the def style
*/
public VerticalSeekBar(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
/**
* Instantiates a new vertical seek bar.
*
* @param context the context
* @param attrs the attrs
*/
public VerticalSeekBar(Context context, AttributeSet attrs) {
super(context, attrs);
}
/* (non-Javadoc)
* @see android.widget.AbsSeekBar#onSizeChanged(int, int, int, int)
*/
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(h, w, oldh, oldw);
}
/* (non-Javadoc)
* @see android.widget.AbsSeekBar#onMeasure(int, int)
*/
@Override
protected synchronized void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(heightMeasureSpec, widthMeasureSpec);
setMeasuredDimension(getMeasuredHeight(), getMeasuredWidth());
}
/* (non-Javadoc)
* @see android.widget.AbsSeekBar#onDraw(android.graphics.Canvas)
*/
protected void onDraw(Canvas c) {
c.rotate(-90);
c.translate(-getHeight(), 0);
super.onDraw(c);
}
/* (non-Javadoc)
* @see android.widget.AbsSeekBar#onTouchEvent(android.view.MotionEvent)
*/
@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;
}
}
,我將它添加到我的活動,像這樣:
zoomCtrl = new VerticalSeekBar(this);
zoomCtrl.setLayoutParams(zCtrl);
zoomCtrl.setProgressDrawable(getResources().getDrawable(R.drawable.zoombar_progress_bg));
zoomCtrl.setThumb(getResources().getDrawable(R.drawable.imagebtn_zoom_thumb));
zoomCtrl.setBackgroundDrawable(getResources().getDrawable(R.drawable.zoom_track));
zoomCtrl.setPadding(25, 0, 25, 0);
zoomCtrl.setOnSeekBarChangeListener(this);
rel.addView(zoomCtrl);
seekbar.setProgress(seekbar.getProgress()+ 5) 和seekbar.setOffsetThumb(INT偏移)或seekbar.setThumb(繪製) – Tobrun
setThumb()?它已經設置.. setThumbOffset()?我如何確定偏移量int? – erik
其實我不想重置偏移..多數民衆贊成不太好 – erik