在 Android 中通过 CODE ONLY 更改进度条颜色

问题描述

我有一个使用 ProgressBar 类的 progressBar.

I have a progressBar using the ProgressBar class.

就这样做:

progressBar = new ProgressBar(this, null, android.R.attr.progressBarStyleHorizontal);

我需要更改那个颜色，使用输入值，如下所示:

I need to change the color of that one, using input value like so:

int color = "red in RGB value".progressBar.setColor(color)

或者类似的东西...

我无法使用 XML 布局，因为可以为用户自定义进度条.

I can't use an XML layout because the progress bar is customizable for users.

推荐答案

由于我在此处找到了有关某个主题的帮助但不记得链接，因此我将发布非常适合我的需求的完整解决方案:

As I found help on a topic here but can't remember the link, I'm posting my full solution which works great for my needs:

    // Draw a simple progressBar from xml
    progressBar = new ProgressBar(this, null, android.R.attr.progressBarStyleHorizontal);

    // Convert the color (Decimal value) to HEX value: (e.g: #4b96a0)
    String color = colorDecToHex(75, 150, 160);

    // Define a shape with rounded corners
    final float[] roundedCorners = new float[] { 5, 5, 5, 5, 5, 5, 5, 5 };
    ShapeDrawable pgDrawable = new ShapeDrawable(new RoundRectShape(roundedCorners,     null, null));

    // Sets the progressBar color
    pgDrawable.getPaint().setColor(Color.parseColor(color));

    // Adds the drawable to your progressBar
    ClipDrawable progress = new ClipDrawable(pgDrawable, Gravity.LEFT, ClipDrawable.HORIZONTAL);
    progressBar.setProgressDrawable(progress);

    // Sets a background to have the 3D effect
    progressBar.setBackgroundDrawable(Utils.getActivity().getResources()
            .getDrawable(android.R.drawable.progress_horizontal));

    // Adds your progressBar to your layout
    contentLayout.addView(progressBar);

这里是将 DECIMAL 颜色值转换为 HEXADECIMAL 的代码:

And here is the code to convert DECIMAL color values to HEXADECIMAL:

public static String colorDecToHex(int p_red, int p_green, int p_blue)
{
    String red = Integer.toHexString(p_red);
    String green = Integer.toHexString(p_green);
    String blue = Integer.toHexString(p_blue);

    if (red.length() == 1)
    {
        red = "0" + red;
    }
    if (green.length() == 1)
    {
        green = "0" + green;
    }
    if (blue.length() == 1)
    {
        blue = "0" + blue;
    }

    String colorHex = "#" + red + green + blue;
    return colorHex;
}

我认为最后一种方法不是那么干净，但效果很好.

I think the last method is not that clean but it works well.

希望这对你有帮助，在这个进度条上浪费了太多时间.

Hope this well help, too much time wasted on this progressbar.

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