Android Seekbar拇指在像素中的位置

Question

如何获取SeekBar像素的当前位置？

目前我正试图在计算的基础上获得这个位置.

屏幕宽度,搜索条宽度,当前搜索进度等等.但我无法从中获得确切的位置.

有人有任何想法吗？

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编码相同如下.

我想在SeekBar拇指上投下一个组件.

translation = calculateTranslation(this.deviceScreenWidth, seekBarWidth, seekBar1T.getMax(), Integer.valueOf(ConstantData.seekbar_fifth.toString()), topComponentWidth, 0);
        if (currentapiVersion < android.os.Build.VERSION_CODES.HONEYCOMB){
            TranslateAnimation anim = new TranslateAnimation(translation - 1,
                    translation, 0, 0);
            anim.setFillAfter(true);
            anim.setDuration(0);
            edtTextRodUpDown.startAnimation(anim);  
        }else{
            edtTextRodUpDown.setTranslationX(translation);
        }

并计算翻译

    private float calculateTranslation(int screenWidth, int seekBarWidth, int seekMaxProgress, int currentProgress, int componentWidth, int extraDifference){
    double calculatedPosition = 0f;
    calculatedPosition = (double)((double)(seekBarWidth-((screenWidth-seekBarWidth))) / (double)seekMaxProgress) * (double)currentProgress;
    calculatedPosition = calculatedPosition - (double)(componentWidth/2);
    calculatedPosition = calculatedPosition + extraDifference;
    Double d = new Double(calculatedPosition);
    if(d < 0){
        return 0.0f;
    }else if(d + componentWidth > screenWidth){
        return screenWidth-componentWidth;
    }else{
        return d.floatValue();
    }
}

Answer 1

我这样做了:

int width = seekBar.getWidth()
            - seekBar.getPaddingLeft()
            - seekBar.getPaddingRight();
int thumbPos = seekBar.getPaddingLeft()
            + width
            * seekBar.getProgress()
            / seekBar.getMax();

Answer 2

您可以使用getBounds()来获取此信息..

例如，下面的示例代码将 aTextView与seekbar拇指位置对齐。

TextView sliderIndicator= ... Rect bounds = seekBar.getThumb().getBounds(); sliderIndicator.setTranslationX(seekBar.getLeft() + bounds.left);