R.attr.colorPrimary的color类型的预期资源

问题描述

我只想以编程方式设置contentScrim.所以我尝试了

I just want to set contentScrim programmatically. So I tried

int color = ContextCompat.getColor(getActivity(), R.attr.colorPrimary);
collapsingToolbarLayout.setContentScrimColor(color);

然后我尝试了

collapsingToolbarLayout.setContentScrimColor(
        getResources().getColor(R.attr.colorPrimary));

但是我不断收到有关 R.attr.colorPrimary 的投诉.有什么帮助吗?

But I keep getting complaints about R.attr.colorPrimary. Any help with this?

有人似乎问了这个问题Android-应该在此处传递解析后的颜色而不是资源ID:`getResources().getColor(R.attr.colorPrimary)`.但是我尝试的正是他们建议我尝试的方法.我的目标是minSDK 16.

Someone seems to have ask this question Android - Should pass resolved color instead of resource id here: `getResources().getColor(R.attr.colorPrimary)`. But what I tried is exactly what they suggested I should try. I am targeting minSDK 16.

顺便说一句，我不能使用 R.color.colorPrimary ，因为我希望动态设置的主题不是某种硬编码/默认颜色.

BTW I cannot use R.color.colorPrimary because I want the dynamically set theme not some hardcoded/default color.

推荐答案

public int getColor(Context context, int colorResId) {

    //return ContextCompat.getColor(context, colorResId); // Doesn't seem to work for R.attr.colorPrimary

    TypedValue typedValue = new TypedValue();
    TypedArray typedArray = context.obtainStyledAttributes(typedValue.data, new int[] {colorResId});
    int color = typedArray.getColor(0, 0);
    typedArray.recycle();
    return color;

}

用法:

int actualPrimaryColor = getColor(context，R.attr.colorPrimary);

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