为什么动态创建SeekBar不是我的颜色？

Question

我必须在运行时创建具有主要和次要进度的SeekBar。查看tileify function我应该如何处理LayerDrawable，progress_horizontal_holo_dark.xml查看正确的ID，我想出了以下内容：

    // parent view
    LinearLayout parent = (LinearLayout) findViewById(R.id.parent);

    // create widget
    LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
            RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.WRAP_CONTENT);

    SeekBar seekBar = new SeekBar(this);
    seekBar.setLayoutParams(params);

    // set bg resources
    Drawable background = getResources().getDrawable(R.drawable.scrubber_track_holo_light);
    ScaleDrawable primary = new ScaleDrawable(getResources().getDrawable(R.drawable.scrubber_primary_holo), 0x10|0x03, 100.0f, 100);

    ScaleDrawable secondary = new ScaleDrawable(getResources().getDrawable(R.drawable.scrubber_secondary_holo), 0x100x03, 100.0f, 85);

    LayerDrawable layerDrawable = new LayerDrawable(new Drawable[] { background, secondary, primary});
    layerDrawable.setId(0, android.R.id.background);
    layerDrawable.setId(1, android.R.id.secondaryProgress);
    layerDrawable.setId(2, android.R.id.progress);

    seekBar.setBackgroundDrawable(layerDrawable);
    seekBar.setThumb(getResources().getDrawable(R.drawable.seekbar_btn));

    // set values
    seekBar.setMax(50);
    seekBar.setSecondaryProgress(25);
    seekBar.setProgress(15);
    parent.addView(seekBar);  

这就是SeekBar的样子：

这是我的资源档案：

- scrubber_primary_holo.9.png
- scrubber_secondary_holo.9.png

问题：

• setProgressDrawable（layerDrawable）没有按预期工作。我在XML代码中使用此函数，但如果我在运行时使用它，我会得到resultult，如下图所示。

有什么想法吗？

Answer 1

如果其他人遇到同样的问题，我找到了解决方案。有两个问题。第一个是虽然在XML中使用的ScaleBitmap不能从代码中工作。我不得不使用ClipDrawable。第二个问题是显示主要和次要进展 - 它们是在第一次进展变化后显示的。通过首先将seekBar添加到父视图然后设置主要和次要进度来解决此问题。您可以在下面看到源代码。干杯！

    // CREATE WIDGET
    LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
            RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.WRAP_CONTENT);

    SeekBar seekBar = new SeekBar(this, null, android.R.attr.seekBarStyle);
    seekBar.setLayoutParams(params);
    parent.addView(seekBar);

    seekBar.setMax(50);
    seekBar.setProgress(15);
    seekBar.setSecondaryProgress(25);


    // CREATE PROGRESS BAR
    LayerDrawable layerDrawable = (LayerDrawable) seekBar.getProgressDrawable();
    seekBar.setThumb(getResources().getDrawable(R.drawable.seekbar_btn));

    Drawable progress = (Drawable) layerDrawable.findDrawableByLayerId(android.R.id.progress);
    Bitmap progressBmp = BitmapFactory.decodeResource(getResources(), R.drawable.scrubber_secondary_holo);
    progress = new ClipDrawable(new BitmapDrawable(getResources(), progressBmp), Gravity.AXIS_PULL_BEFORE, ClipDrawable.HORIZONTAL);
    layerDrawable.setDrawableByLayerId(android.R.id.progress, progress);

    Drawable secondary = (Drawable) layerDrawable.findDrawableByLayerId(android.R.id.secondaryProgress);
    Bitmap secondaryBmp = BitmapFactory.decodeResource(getResources(), R.drawable.scrubber_primary_holo);
    secondary = new ClipDrawable(new BitmapDrawable(getResources(), secondaryBmp), Gravity.AXIS_PULL_BEFORE, ClipDrawable.HORIZONTAL);
    layerDrawable.setDrawableByLayerId(android.R.id.secondaryProgress, secondary);

    Drawable background = (Drawable) layerDrawable.findDrawableByLayerId(android.R.id.background);
    Bitmap backgroundBmp = BitmapFactory.decodeResource(getResources(), R.drawable.scrubber_track_holo_light);
    background = new BitmapDrawable(getResources(), backgroundBmp);
    layerDrawable.setDrawableByLayerId(android.R.id.background, background);