使用名称中的变量(R.color.name +变量)从values/colors.xml中检索颜色 [英] Retrieve a color from values/colors.xml using a variable in name (R.color.name + variable)

问题描述

我的colors.xml中有一个颜色列表，所有颜色名称的格式均为tColor1，tColor2，tColor3等.名字.所以我有

I have a list of colors in my colors.xml that all have names in the format tColor1, tColor2, tColor3, etc. and I want to retrieve them in a for-to-do loop using the looping integer as part of the name. So I have

for (int i = 0; i < numTrails; i++) {
    newColors[i] = R.color.tColor + i;
}

现在，我知道我不能像这样使用R类，但是我可以使用什么其他方法来获得颜色?

Now I understand that I can't use the R class like that, but what other method can I use to get the colors?

推荐答案

您可以执行以下操作，假设您的newColors数组是具有资源ID的int数组?

You can do something like this, assuming your newColors Array is an int Array with the resource ids?

String colorId = "tColor";
Resources resources = getResources();
for (int i = 0; i < numTrails; i++) {
    newColors[i] = resources.getIdentifier(colorId+i, "color", getPackageName());    
}

如果它是您的颜色数组，请在该结果上使用getResources().getColor(...):

If it is an array of your colors use getResources().getColor(...) on that result instead:

String colorId = "tColor";
Resources resources = getResources();
for (int i = 0; i < numTrails; i++) {
    int resId = resources.getIdentifier(colorId+i, "color", getPackageName());
    newColors[i] = resources.getColor(resId);
}

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