我正试图为我的Seekbar做一个“贴上标签”的拇指。 目标是每次Seekbar位置更改时自定义拇指上方的文本。
我这样做:
...
seekBar = (SeekBar) findViewById(R.id.bet_seek_bar);
seekBar.setMax(10);
setSeekBarLabel("0");
seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onStopTrackingTouch(SeekBar seekBar)
{
}
@Override
public void onStartTrackingTouch(SeekBar seekBar)
{
}
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser)
{
setSeekBarLabel(String.valueOf(progress));
}
});
}
private void setSeekBarLabel(String text)
{
BitmapDrawable thumb = Utils.writeOnBitmap(thumbBmp, text, 0, 0, thumbLablePaint);
seekBar.setThumb(thumb);
}
跑完之后,触摸吧,我明白了:
我现在不关心任何文字问题(不写一个,门廊等)。
我要关注相对于酒吧进度的拇指位置。
拇指位置应该是绿色条结束的位置。我错过了什么?
问候。
答案 0 :(得分:16)
我最终从SeekBar扩展,并覆盖了onMeasure()和onDraw方法(),这是我发现的唯一方法,所以标签/拇指的工作。
将其发布给其他人:
...
@Override
protected synchronized void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
{
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
if (labelBackground != null)
{
viewWidth = getMeasuredWidth();
barHeight = getMeasuredHeight();// returns only the bar height (without the label);
setMeasuredDimension(viewWidth, barHeight + labelBackground.getHeight());
}
}
@Override
protected synchronized void onDraw(Canvas canvas)
{
if (labelBackground != null)
{
barBounds.left = getPaddingLeft();
barBounds.top = labelBackground.getHeight() + getPaddingTop();
barBounds.right = barBounds.left + viewWidth - getPaddingRight() - getPaddingLeft();
barBounds.bottom = barBounds.top + barHeight - getPaddingBottom() - getPaddingTop();
progressPosX = barBounds.left + ((float) this.getProgress() / (float) this.getMax()) * barBounds.width();
labelPos.x = (int) progressPosX - labelOffset;
labelPos.y = getPaddingTop();
progressDrawable = getProgressDrawable();
progressDrawable.setBounds(barBounds.left, barBounds.top, barBounds.right, barBounds.bottom);
progressDrawable.draw(canvas);
labelTextPaint.getTextBounds(labelText, 0, labelText.length(), labelTextRect);
canvas.drawBitmap(labelBackground, labelPos.x, labelPos.y, labelBackgroundPaint);
canvas.drawText(labelText, labelPos.x + labelBackground.getWidth() / 2 - labelTextRect.width() / 2, labelPos.y + labelBackground.getHeight() / 2 + labelTextRect.height() / 2, labelTextPaint);
thumbX = (int) progressPosX - getThumbOffset();
thumbDrawable.setBounds(thumbX, barBounds.top, thumbX + thumbDrawable.getIntrinsicWidth(), barBounds.top + thumbDrawable.getIntrinsicHeight());
thumbDrawable.draw(canvas);
} else
{
super.onDraw(canvas);
}
}
结果:
答案 1 :(得分:0)
将int progress传递给您将drawable设置为seekBar并使用setProgress()方法的方法:
private void setSeekBarLabel(String text, int progress)
{
BitmapDrawable thumb = Utils.writeOnBitmap(thumbBmp, text, 0, 0, thumbLablePaint);
seekBar.setThumb(thumb);
seekBar.setProgress(progress);
}
并将第二个参数添加到调用方法:
setSeekBarLabel(String.valueOf(progress), progress);