android - 如何在代码中设置TextView的文本颜色？(How to set the text color of TextView in code?)

Question

In XML, we can set a text color by the textColor attribute, like android:textColor="#FF0000" .

(在XML中，我们可以通过textColor属性设置文本颜色，例如android:textColor="#FF0000" 。)

But how do I change it by coding?

(但是，如何通过编码进行更改？)

I tried something like:

(我尝试了类似的东西：)

holder.text.setTextColor(R.color.Red);

Where holder is just a class and text is of type TextView .

(其中holder是一个类， text是TextView类型。)

Red is an RGB value (#FF0000) set in strings.

(红色是在字符串中设置的RGB值（＃FF0000）。)

But it shows a different color rather than red.

(但是它显示出不同的颜色，而不是红色。)

What kind of parameter can we pass in setTextColor()?

(我们可以在setTextColor（）中传递什么样的参数？)

In documentation, it says int , but is it a resource reference value or anything else?

(在文档中，它表示为int ，但这是资源参考值还是其他值？)

  ask by Vikas translate from so

Answer 1

You should use:

(您应该使用：)

holder.text.setTextColor(Color.RED);

For a sanity check, I just tried it, because I had a project open anyway, and yes, it's nice and red ;D

(对于完整性检查，我只是尝试了一下，因为无论如何我都有一个打开的项目，是的，它很好看而且很红； D)

---

You can use various functions from the Color class to get the same effect of course.

(您可以使用Color类中的各种功能来获得相同的效果。)

• Color.parseColor (Manual) (like LEX uses)

  (Color.parseColor （手动） （例如LEX使用）)

   text.setTextColor(Color.parseColor("#FFFFFF")); 

• Color.rgb and Color.argb ( Manual rgb ) ( Manual argb ) (like Ganapathy uses)

  (Color.rgb和Color.argb （ 手动rgb ）（ 手动argb ）（像Ganapathy一样）)

   holder.text.setTextColor(Color.rgb(200,0,0)); holder.text.setTextColor(Color.argb(0,200,0,0)); 

• And of course, if you want to define your color in an XML file, you can do this:

  (当然，如果要在XML文件中定义颜色，则可以执行以下操作：)

   <color name="errorColor">#f00</color> 

  because the getColor() function is deprecated ¹ , you need to use it like so:

  (因为不建议使用getColor()函数¹ ，所以您需要像这样使用它：)

   ContextCompat.getColor(context, R.color.your_color); 

• You can also insert plain HEX, like so:

  (您还可以插入普通十六进制，如下所示：)

   myTextView.setTextColor(0xAARRGGBB); 

  Where you have an alpha-channel first, then the color value.

  (首先有一个Alpha通道的地方，然后是颜色值。)

Check out the complete manual of course, public class Color extends Object .

(当然要查看完整的手册， 公共类Color扩展Object 。)

---

¹ This code used to be in here as well:

(¹此代码也曾经在这里：)

textView.setTextColor(getResources().getColor(R.color.errorColor));

This method is now deprecated in Android M. You can however use it from the contextCompat in the support library , as the example now shows.

(现在已在Android M中弃用了该方法。但是，您可以从支持库的contextCompat中使用它，如示例所示。)